Pub Date : 2022-10-13DOI: 10.1017/S1742170522000242
N. Banaeian, M. Zangeneh, P. Golińska-Dawson
Abstract This paper presents a novel approach to multi-criteria sustainability performance assessment of horticultural crops. The crops are ranked by the decision-making method ELECTRE IV with environmental, energy and technological criteria. In total eight indicators are taken into consideration and calculated based on primary data collected from over 260 farms in northern Iran. Additionally, Data Envelopment Analysis is used to calculate the technical efficiency and potential for energy saving by different management of the production units. The novel contribution of this study is the comparison of several horticultural products (oranges, kiwis, persimmons and tangerines), when most of the previous studies have focused on one product. Moreover, novel calculations of the carbon footprint are presented for oranges, tangerines and persimmons. This paper also includes the first study on the environmental impact of persimmon fruit's production. The obtained results show that energy efficiency for orange, tangerine, kiwi and persimmon products: 1.1, 0.84, 0.53 and 1.22, respectively. In each hectare of kiwi orchards, the amount of CO2 emissions of 1219 kg and the ecological footprint of 3.21 hectares have been calculated, which is statistically significant compared to orange, tangerine and persimmon. The chemical and fuel inputs have the greatest potential for reducing energy consumption in the studied products. Results of ELECTRE IV showed that kiwi is the most sustainable selection for the studied region followed by orange, persimmon and tangerine, respectively. Kiwi has also relatively low technical efficiency. This means that this product has the greatest potential for a reduction of energy consumption, while maintaining the same amount of crop. It is recommended to include the development of kiwi orchards in the policies of Guilan, but with more careful management of the production inputs.
{"title":"Multi-criteria sustainability performance assessment of horticultural crops using DEA and ELECTRE IV methods","authors":"N. Banaeian, M. Zangeneh, P. Golińska-Dawson","doi":"10.1017/S1742170522000242","DOIUrl":"https://doi.org/10.1017/S1742170522000242","url":null,"abstract":"Abstract This paper presents a novel approach to multi-criteria sustainability performance assessment of horticultural crops. The crops are ranked by the decision-making method ELECTRE IV with environmental, energy and technological criteria. In total eight indicators are taken into consideration and calculated based on primary data collected from over 260 farms in northern Iran. Additionally, Data Envelopment Analysis is used to calculate the technical efficiency and potential for energy saving by different management of the production units. The novel contribution of this study is the comparison of several horticultural products (oranges, kiwis, persimmons and tangerines), when most of the previous studies have focused on one product. Moreover, novel calculations of the carbon footprint are presented for oranges, tangerines and persimmons. This paper also includes the first study on the environmental impact of persimmon fruit's production. The obtained results show that energy efficiency for orange, tangerine, kiwi and persimmon products: 1.1, 0.84, 0.53 and 1.22, respectively. In each hectare of kiwi orchards, the amount of CO2 emissions of 1219 kg and the ecological footprint of 3.21 hectares have been calculated, which is statistically significant compared to orange, tangerine and persimmon. The chemical and fuel inputs have the greatest potential for reducing energy consumption in the studied products. Results of ELECTRE IV showed that kiwi is the most sustainable selection for the studied region followed by orange, persimmon and tangerine, respectively. Kiwi has also relatively low technical efficiency. This means that this product has the greatest potential for a reduction of energy consumption, while maintaining the same amount of crop. It is recommended to include the development of kiwi orchards in the policies of Guilan, but with more careful management of the production inputs.","PeriodicalId":54495,"journal":{"name":"Renewable Agriculture and Food Systems","volume":"37 1","pages":"649 - 659"},"PeriodicalIF":2.7,"publicationDate":"2022-10-13","publicationTypes":"Journal Article","fieldsOfStudy":null,"isOpenAccess":false,"openAccessPdf":"","citationCount":null,"resultStr":null,"platform":"Semanticscholar","paperid":"41554412","PeriodicalName":null,"FirstCategoryId":null,"ListUrlMain":null,"RegionNum":3,"RegionCategory":"农林科学","ArticlePicture":[],"TitleCN":null,"AbstractTextCN":null,"PMCID":"","EPubDate":null,"PubModel":null,"JCR":null,"JCRName":null,"Score":null,"Total":0}
Pub Date : 2022-10-03DOI: 10.1017/s1742170522000266
S. Figueroa
Abstract This article offers a window onto the experience of three researchers who influenced the direction of organic agriculture research from the 1980s through today. Kathleen Delate, Catherine Greene and Deborah Stinner have all contributed important work in the field, from organizing and executing research projects to analyzing the collecting hard data that provided insight into the numerous environmental and economic benefits of organic agriculture. Their stories share many similar biographical markers, from the importance of food and nature in childhood memories to trailblazing projects in the early 2000s.
{"title":"Oral histories of three pioneers in organic agriculture research","authors":"S. Figueroa","doi":"10.1017/s1742170522000266","DOIUrl":"https://doi.org/10.1017/s1742170522000266","url":null,"abstract":"Abstract This article offers a window onto the experience of three researchers who influenced the direction of organic agriculture research from the 1980s through today. Kathleen Delate, Catherine Greene and Deborah Stinner have all contributed important work in the field, from organizing and executing research projects to analyzing the collecting hard data that provided insight into the numerous environmental and economic benefits of organic agriculture. Their stories share many similar biographical markers, from the importance of food and nature in childhood memories to trailblazing projects in the early 2000s.","PeriodicalId":54495,"journal":{"name":"Renewable Agriculture and Food Systems","volume":"37 1","pages":"581 - 587"},"PeriodicalIF":2.7,"publicationDate":"2022-10-03","publicationTypes":"Journal Article","fieldsOfStudy":null,"isOpenAccess":false,"openAccessPdf":"","citationCount":null,"resultStr":null,"platform":"Semanticscholar","paperid":"42610512","PeriodicalName":null,"FirstCategoryId":null,"ListUrlMain":null,"RegionNum":3,"RegionCategory":"农林科学","ArticlePicture":[],"TitleCN":null,"AbstractTextCN":null,"PMCID":"","EPubDate":null,"PubModel":null,"JCR":null,"JCRName":null,"Score":null,"Total":0}
Pub Date : 2022-09-13DOI: 10.1017/S1742170522000096
R. Malone, P. O’Brien, S. Herbstritt, Bryan D. Emmett, D. Karlen, T. Kaspar, K. Kohler, A. Radke, S. Lence, Huaiqing Wu, T. Richard
Abstract Double-cropping winter rye cover crops (CC) with soybean in the North Central US could help with the global effort to sustainably intensify agriculture. Studies addressing the management of these systems are limited. Therefore, a field study was conducted from 2017 to 2019 in Central Iowa, US to evaluate winter rye CC biomass production, aboveground N accumulation, estimated economics, estimated within-field energy balance and estimated greenhouse gas (GHG) emissions under three N application rates (0, 60, 120 kg N ha−1) and three planting methods (pre- and post-harvest broadcast and post-harvest drilling). Averaged over N rates, all planting methods resulted in >5.0 Mg ha−1 year−1 rye aboveground biomass dry matter. Averaged over the 2-year study and compared with unfertilized treatments, applying 60 kg N ha−1 produced 1.1 Mg ha−1 more aboveground biomass (6.1 vs 5.0 Mg ha−1), accumulated 30 kg ha−1 more N in aboveground biomass (88 vs 58 kg N ha−1), and led to 20 GJ ha−1 more net energy. Biomass production was not significantly higher with 120 kg N ha−1 compared with the 60 kg N ha−1 rate. Even when accounting for an estimated 0.75 Mg ha−1 of above ground rye biomass left in the field after harvesting, more N was removed than applied at the 60 kg N ha−1 rate. The minimum rye prices over the 2-year study needed for double-cropping winter rye CC to be profitable (breakeven prices) averaged $117 and $104 Mg−1 for the 0 and 60 kg N ha−1 rates, which factors in estimated soybean yield reductions in 2019 compared with local averages but not off-site transportation. GHG emissions were estimated to increase approximately threefold between the unfertilized and 60 kg N ha−1 rates without considering bioenergy offsets. While environmental tradeoffs need further study, results suggest harvesting fertilized rye CC biomass before planting soybean is a promising practice for the North Central US to maximize total crop and net energy production.
摘要：在美国中北部种植大豆双季冬黑麦覆盖作物（CC）有助于全球可持续加强农业。关于这些系统管理的研究是有限的。因此，2017年至2019年在美国爱荷华州中部进行了一项实地研究，以评估冬黑麦CC的生物量生产、地上氮积累、估计经济性，在三种氮施用率（0、60、120 kg N ha−1）和三种种植方法（收获前和收获后广播和收获后钻探）下，估计的田间能量平衡和估计的温室气体排放量。所有种植方法的平均施氮量均大于5.0 Mg ha−1年−1黑麦地上生物量干物质。在2年的研究中，与未施肥处理相比，施用60 kg N ha−1可多产生1.1 Mg ha−1的地上生物量（6.1 vs 5.0 Mg ha−），积累30 kg ha−1多的地上生物质氮（88 vs 58 kg N ha–1），并可多产生20 GJ ha−1净能量。与60 kg N ha−1相比，120 kg N ha–1的生物量产量没有显著提高。即使考虑到收割后留在田里的地上黑麦生物量估计为0.75 Mg ha−1，去除的氮也比60 kg N ha−1的施用量多。在为期2年的研究中，双季冬黑麦CC盈利所需的最低黑麦价格（盈亏平衡价格）在0和60 kg N ha−1的条件下平均为117美元和104美元Mg−1，这是2019年大豆产量与当地平均水平相比预计下降的因素，但不包括场外运输。在不考虑生物能源补偿的情况下，未施肥和60 kg N ha−1之间的温室气体排放量估计增加了约三倍。虽然环境权衡需要进一步研究，但研究结果表明，在种植大豆之前收获施肥的黑麦CC生物量是美国中北部最大限度地提高作物总产量和净能源产量的一种很有前途的做法。
{"title":"Rye-soybean double-crop: planting method and N fertilization effects in the North Central US","authors":"R. Malone, P. O’Brien, S. Herbstritt, Bryan D. Emmett, D. Karlen, T. Kaspar, K. Kohler, A. Radke, S. Lence, Huaiqing Wu, T. Richard","doi":"10.1017/S1742170522000096","DOIUrl":"https://doi.org/10.1017/S1742170522000096","url":null,"abstract":"Abstract Double-cropping winter rye cover crops (CC) with soybean in the North Central US could help with the global effort to sustainably intensify agriculture. Studies addressing the management of these systems are limited. Therefore, a field study was conducted from 2017 to 2019 in Central Iowa, US to evaluate winter rye CC biomass production, aboveground N accumulation, estimated economics, estimated within-field energy balance and estimated greenhouse gas (GHG) emissions under three N application rates (0, 60, 120 kg N ha−1) and three planting methods (pre- and post-harvest broadcast and post-harvest drilling). Averaged over N rates, all planting methods resulted in >5.0 Mg ha−1 year−1 rye aboveground biomass dry matter. Averaged over the 2-year study and compared with unfertilized treatments, applying 60 kg N ha−1 produced 1.1 Mg ha−1 more aboveground biomass (6.1 vs 5.0 Mg ha−1), accumulated 30 kg ha−1 more N in aboveground biomass (88 vs 58 kg N ha−1), and led to 20 GJ ha−1 more net energy. Biomass production was not significantly higher with 120 kg N ha−1 compared with the 60 kg N ha−1 rate. Even when accounting for an estimated 0.75 Mg ha−1 of above ground rye biomass left in the field after harvesting, more N was removed than applied at the 60 kg N ha−1 rate. The minimum rye prices over the 2-year study needed for double-cropping winter rye CC to be profitable (breakeven prices) averaged $117 and $104 Mg−1 for the 0 and 60 kg N ha−1 rates, which factors in estimated soybean yield reductions in 2019 compared with local averages but not off-site transportation. GHG emissions were estimated to increase approximately threefold between the unfertilized and 60 kg N ha−1 rates without considering bioenergy offsets. While environmental tradeoffs need further study, results suggest harvesting fertilized rye CC biomass before planting soybean is a promising practice for the North Central US to maximize total crop and net energy production.","PeriodicalId":54495,"journal":{"name":"Renewable Agriculture and Food Systems","volume":"37 1","pages":"445 - 456"},"PeriodicalIF":2.7,"publicationDate":"2022-09-13","publicationTypes":"Journal Article","fieldsOfStudy":null,"isOpenAccess":false,"openAccessPdf":"","citationCount":null,"resultStr":null,"platform":"Semanticscholar","paperid":"43952307","PeriodicalName":null,"FirstCategoryId":null,"ListUrlMain":null,"RegionNum":3,"RegionCategory":"农林科学","ArticlePicture":[],"TitleCN":null,"AbstractTextCN":null,"PMCID":"","EPubDate":null,"PubModel":null,"JCR":null,"JCRName":null,"Score":null,"Total":0}
Pub Date : 2022-09-01DOI: 10.1017/S1742170522000229
Ilke Geladi, P. Henry, Paulina M. Couenberg, R. Welsh, B. Fessl
Abstract Conservation practices in agricultural landscapes can greatly mitigate biodiversity loss. However, agricultural landscapes are embedded in complex, social-ecological systems and therefore require a strong social-ecological approach for effective conservation measures. The Galapagos Islands are globally recognized for their high levels of biodiversity. Nevertheless, in recent years, Galapagos landbirds have suffered rapid declines, specifically in the agricultural zone. Our study is the first to examine the farmers’ perception of landbirds in the agricultural zone of Santa Cruz, Galapagos Islands. We conducted semi-structured interviews with 38 farmers to characterize the relationship between farmers and landbirds including how landbirds affect farmers and farmers’ perceptions of landbirds. The interviewed farmers managed a diverse array of farm types including coffee in agroforestry settings (23.7%), small-scale fruit and vegetable (60.5%) and livestock production (15.8%). We found that 86.9% of farmers had a positive or neutral perception of birds despite 52.6% of farmers finding finches bothersome. The most common techniques farmers employed to deter birds were putting out food and water, using nets to protect seedbeds and crops and using protective tubes around young plants. Our results suggest a positive potential for future conservation work targeted on farmland biodiversity. Future conservation projects should also address disservices and the mitigation of crop raiding by landbirds, the uninformed use of pesticides and other pest issues such as ants and rats.
{"title":"What are farmers' perceptions about farmland landbirds? A Galapagos Islands perspective","authors":"Ilke Geladi, P. Henry, Paulina M. Couenberg, R. Welsh, B. Fessl","doi":"10.1017/S1742170522000229","DOIUrl":"https://doi.org/10.1017/S1742170522000229","url":null,"abstract":"Abstract Conservation practices in agricultural landscapes can greatly mitigate biodiversity loss. However, agricultural landscapes are embedded in complex, social-ecological systems and therefore require a strong social-ecological approach for effective conservation measures. The Galapagos Islands are globally recognized for their high levels of biodiversity. Nevertheless, in recent years, Galapagos landbirds have suffered rapid declines, specifically in the agricultural zone. Our study is the first to examine the farmers’ perception of landbirds in the agricultural zone of Santa Cruz, Galapagos Islands. We conducted semi-structured interviews with 38 farmers to characterize the relationship between farmers and landbirds including how landbirds affect farmers and farmers’ perceptions of landbirds. The interviewed farmers managed a diverse array of farm types including coffee in agroforestry settings (23.7%), small-scale fruit and vegetable (60.5%) and livestock production (15.8%). We found that 86.9% of farmers had a positive or neutral perception of birds despite 52.6% of farmers finding finches bothersome. The most common techniques farmers employed to deter birds were putting out food and water, using nets to protect seedbeds and crops and using protective tubes around young plants. Our results suggest a positive potential for future conservation work targeted on farmland biodiversity. Future conservation projects should also address disservices and the mitigation of crop raiding by landbirds, the uninformed use of pesticides and other pest issues such as ants and rats.","PeriodicalId":54495,"journal":{"name":"Renewable Agriculture and Food Systems","volume":"37 1","pages":"504 - 515"},"PeriodicalIF":2.7,"publicationDate":"2022-09-01","publicationTypes":"Journal Article","fieldsOfStudy":null,"isOpenAccess":false,"openAccessPdf":"","citationCount":null,"resultStr":null,"platform":"Semanticscholar","paperid":"42316321","PeriodicalName":null,"FirstCategoryId":null,"ListUrlMain":null,"RegionNum":3,"RegionCategory":"农林科学","ArticlePicture":[],"TitleCN":null,"AbstractTextCN":null,"PMCID":"","EPubDate":null,"PubModel":null,"JCR":null,"JCRName":null,"Score":null,"Total":0}
Pub Date : 2022-09-01DOI: 10.1017/S1742170522000230
Birhanu Bayeh, G. Alemayehu, T. Tadesse, Melkamu Alemayehu
Abstract Food production on ever-dwindling agricultural land is a severe problem in Ethiopia, necessitating the adoption of more efficient and sustainable land-use strategies to feed the country's growing population. The benefits of intercropping are known to be limited by a variety of factors such as companion crop sowing date and variety. The present study was therefore initiated to evaluate the effect of varieties and planting dates of lupines in bread wheat-lupine under an additive design intercropping system in Northwest Ethiopia. Field experiments were conducted for two years in Adet and Debre Tabor experimental sites. The treatments consisted of four planting dates of lupines and two varieties of lupine. Moreover, the sole crop of bread wheat (Triticum aestivume L.), local lupine (Lupinus albus L.) and sweet lupine (Lupinus angustiflolius L.) were also included. The experiments were laid out in factorial randomized complete block design (RCBD) with three replications. The results showed that at the Adet experimental site, the highest land equivalent ratio (LER) was recorded in the simultaneous planting of sweet lupine and bread wheat (1.3), followed by the planting of sweet lupine two weeks after bread wheat (1.23). While at Debre Tabor experimental site, the highest LER was recorded in planting sweet lupine two weeks after bread wheat (1.67). A greater area time equivalent ratio (ATER) was reported in the simultaneous planting of sweet lupine and bread wheat (1.29), followed by the planting of sweet lupine after bread wheat (1.22) at the Adet experimental site. A greater ATER was also recorded in the planting of sweet lupine after bread wheat (1.53) had the highest ATER in Debre Tabor, followed by simultaneous planting of sweet lupine after bread wheat (1.39) intercropping. This revealed that sole cropping would necessitate 29 and 53% more area, respectively, to attain the same yield as intercropping. In Adet, the simultaneous planting of sweet lupine and bread wheat intercropping, while in Debre Tabor, planting of sweet lupine two weeks after bread wheat boosted productivity, and production efficiency and is a viable option for increasing household food security.
{"title":"Effect of varieties and planting dates of bread wheat-lupine intercropping system under additive design in Northwest Ethiopia","authors":"Birhanu Bayeh, G. Alemayehu, T. Tadesse, Melkamu Alemayehu","doi":"10.1017/S1742170522000230","DOIUrl":"https://doi.org/10.1017/S1742170522000230","url":null,"abstract":"Abstract Food production on ever-dwindling agricultural land is a severe problem in Ethiopia, necessitating the adoption of more efficient and sustainable land-use strategies to feed the country's growing population. The benefits of intercropping are known to be limited by a variety of factors such as companion crop sowing date and variety. The present study was therefore initiated to evaluate the effect of varieties and planting dates of lupines in bread wheat-lupine under an additive design intercropping system in Northwest Ethiopia. Field experiments were conducted for two years in Adet and Debre Tabor experimental sites. The treatments consisted of four planting dates of lupines and two varieties of lupine. Moreover, the sole crop of bread wheat (Triticum aestivume L.), local lupine (Lupinus albus L.) and sweet lupine (Lupinus angustiflolius L.) were also included. The experiments were laid out in factorial randomized complete block design (RCBD) with three replications. The results showed that at the Adet experimental site, the highest land equivalent ratio (LER) was recorded in the simultaneous planting of sweet lupine and bread wheat (1.3), followed by the planting of sweet lupine two weeks after bread wheat (1.23). While at Debre Tabor experimental site, the highest LER was recorded in planting sweet lupine two weeks after bread wheat (1.67). A greater area time equivalent ratio (ATER) was reported in the simultaneous planting of sweet lupine and bread wheat (1.29), followed by the planting of sweet lupine after bread wheat (1.22) at the Adet experimental site. A greater ATER was also recorded in the planting of sweet lupine after bread wheat (1.53) had the highest ATER in Debre Tabor, followed by simultaneous planting of sweet lupine after bread wheat (1.39) intercropping. This revealed that sole cropping would necessitate 29 and 53% more area, respectively, to attain the same yield as intercropping. In Adet, the simultaneous planting of sweet lupine and bread wheat intercropping, while in Debre Tabor, planting of sweet lupine two weeks after bread wheat boosted productivity, and production efficiency and is a viable option for increasing household food security.","PeriodicalId":54495,"journal":{"name":"Renewable Agriculture and Food Systems","volume":"37 1","pages":"516 - 526"},"PeriodicalIF":2.7,"publicationDate":"2022-09-01","publicationTypes":"Journal Article","fieldsOfStudy":null,"isOpenAccess":false,"openAccessPdf":"","citationCount":null,"resultStr":null,"platform":"Semanticscholar","paperid":"46808896","PeriodicalName":null,"FirstCategoryId":null,"ListUrlMain":null,"RegionNum":3,"RegionCategory":"农林科学","ArticlePicture":[],"TitleCN":null,"AbstractTextCN":null,"PMCID":"","EPubDate":null,"PubModel":null,"JCR":null,"JCRName":null,"Score":null,"Total":0}
Pub Date : 2022-08-12DOI: 10.1017/S1742170522000163
Kathryn A. Boys, Siqi Zhang, N. Hooker
Abstract International markets are an important destination and source of U.S. organic agri-food products. This paper offers new insights concerning the current status and trends of U.S. organic imports and exports U.S. policies relevant to the international trade of U.S. organic agri-food products are described, characterizing specific products and partners. In addition, the impact of organic equivalency agreements (OEAs), which the U.S. has signed with Canada, the EU, Japan, South Korea and Switzerland, are examined to determine the extent to which they facilitate trade. Using highly disaggregated international trade data (HS-10) from the U.S. International Trade Commission and Statistics Canada, this analysis finds that fresh agricultural products dominate both U.S. exports and imports. Between 2017 and 2019, apples grapes, strawberries and spinach were the predominant fresh exports, while tomato sauces, vinegar and roasted coffee are the most exported processed food products. A significant majority of these exports are destined for Canada and Mexico. The most imported organic agri-food products include unroasted coffee, bananas, olive oil and soybeans. There is much more diversity in the country of origin of these imports with Mexico, Peru, Brazil, Spain and Argentina among the major organic food suppliers to the U.S. OEAs allow for mutual recognition of national organic standards between countries. This analysis finds that, while, in aggregate, OEAs were not found to impact U.S. organic imports or exports, results evaluating individual agreements do suggest that they can be effective trade policy instruments. In particular, the U.S.–Canada and the U.S.–Switzerland OEAs were found to be effective in facilitating U.S. exports. Taken together these findings offer important insights into current trade patterns, and U.S. international market and organic policy opportunities.
{"title":"The international trade of U.S. organic agri-food products: export opportunities, import competition and policy impacts","authors":"Kathryn A. Boys, Siqi Zhang, N. Hooker","doi":"10.1017/S1742170522000163","DOIUrl":"https://doi.org/10.1017/S1742170522000163","url":null,"abstract":"Abstract International markets are an important destination and source of U.S. organic agri-food products. This paper offers new insights concerning the current status and trends of U.S. organic imports and exports U.S. policies relevant to the international trade of U.S. organic agri-food products are described, characterizing specific products and partners. In addition, the impact of organic equivalency agreements (OEAs), which the U.S. has signed with Canada, the EU, Japan, South Korea and Switzerland, are examined to determine the extent to which they facilitate trade. Using highly disaggregated international trade data (HS-10) from the U.S. International Trade Commission and Statistics Canada, this analysis finds that fresh agricultural products dominate both U.S. exports and imports. Between 2017 and 2019, apples grapes, strawberries and spinach were the predominant fresh exports, while tomato sauces, vinegar and roasted coffee are the most exported processed food products. A significant majority of these exports are destined for Canada and Mexico. The most imported organic agri-food products include unroasted coffee, bananas, olive oil and soybeans. There is much more diversity in the country of origin of these imports with Mexico, Peru, Brazil, Spain and Argentina among the major organic food suppliers to the U.S. OEAs allow for mutual recognition of national organic standards between countries. This analysis finds that, while, in aggregate, OEAs were not found to impact U.S. organic imports or exports, results evaluating individual agreements do suggest that they can be effective trade policy instruments. In particular, the U.S.–Canada and the U.S.–Switzerland OEAs were found to be effective in facilitating U.S. exports. Taken together these findings offer important insights into current trade patterns, and U.S. international market and organic policy opportunities.","PeriodicalId":54495,"journal":{"name":"Renewable Agriculture and Food Systems","volume":"37 1","pages":"603 - 617"},"PeriodicalIF":2.7,"publicationDate":"2022-08-12","publicationTypes":"Journal Article","fieldsOfStudy":null,"isOpenAccess":false,"openAccessPdf":"","citationCount":null,"resultStr":null,"platform":"Semanticscholar","paperid":"43371725","PeriodicalName":null,"FirstCategoryId":null,"ListUrlMain":null,"RegionNum":3,"RegionCategory":"农林科学","ArticlePicture":[],"TitleCN":null,"AbstractTextCN":null,"PMCID":"","EPubDate":null,"PubModel":null,"JCR":null,"JCRName":null,"Score":null,"Total":0}
Pub Date : 2022-08-09DOI: 10.1017/S1742170522000187
Qian Li, Xiaoyang Wang, Jingjing Wang, Yubin Wang
Abstract Two prevailing trends in livestock production include increasing farm sizes and higher recycling rates of manure. Using beef cattle farms in China as a case study, we examine the impact of farm size on farmers' choice of manure disposal modes. Three forms of manure disposal modes are identified: (1) selling to neighboring farmers, (2) giving away to neighboring farmers and (3) self-use. Based on primary data from a field survey of beef cattle farmers in China, we estimate the choice of the above-mentioned three disposal modes using the constrained singular Seemingly Unrelated Regression (SUR) model. We find a significant and nonlinear impact of farm size on farmers' choice of manure disposal modes. Specifically, there is a significant and inversed U-shaped relationship between farm size and manure giving away, and a significant U-shaped relationship between farm size and manure selling or self-use. We additionally find several other factors that affect farmers' choice of manure disposal: the educational level of a farmer has a positive impact on manure selling; the better a farmer's physical health condition, the more likely the farmer self uses manure and less likely gives it away; land acquisition, as well as engagement in crop farming, increases manure self-use and reduces manure giving away and selling; the availability of manure treatment facilities reduces manure self-use; and the willingness of nearby crop growers to accept manure significantly decreases manure self-use and increases manure selling and giving away. Policy implications are also discussed.
{"title":"The impact of livestock farm size on manure disposal modes: sell, give away or self-use","authors":"Qian Li, Xiaoyang Wang, Jingjing Wang, Yubin Wang","doi":"10.1017/S1742170522000187","DOIUrl":"https://doi.org/10.1017/S1742170522000187","url":null,"abstract":"Abstract Two prevailing trends in livestock production include increasing farm sizes and higher recycling rates of manure. Using beef cattle farms in China as a case study, we examine the impact of farm size on farmers' choice of manure disposal modes. Three forms of manure disposal modes are identified: (1) selling to neighboring farmers, (2) giving away to neighboring farmers and (3) self-use. Based on primary data from a field survey of beef cattle farmers in China, we estimate the choice of the above-mentioned three disposal modes using the constrained singular Seemingly Unrelated Regression (SUR) model. We find a significant and nonlinear impact of farm size on farmers' choice of manure disposal modes. Specifically, there is a significant and inversed U-shaped relationship between farm size and manure giving away, and a significant U-shaped relationship between farm size and manure selling or self-use. We additionally find several other factors that affect farmers' choice of manure disposal: the educational level of a farmer has a positive impact on manure selling; the better a farmer's physical health condition, the more likely the farmer self uses manure and less likely gives it away; land acquisition, as well as engagement in crop farming, increases manure self-use and reduces manure giving away and selling; the availability of manure treatment facilities reduces manure self-use; and the willingness of nearby crop growers to accept manure significantly decreases manure self-use and increases manure selling and giving away. Policy implications are also discussed.","PeriodicalId":54495,"journal":{"name":"Renewable Agriculture and Food Systems","volume":"37 1","pages":"468 - 478"},"PeriodicalIF":2.7,"publicationDate":"2022-08-09","publicationTypes":"Journal Article","fieldsOfStudy":null,"isOpenAccess":false,"openAccessPdf":"","citationCount":null,"resultStr":null,"platform":"Semanticscholar","paperid":"41650588","PeriodicalName":null,"FirstCategoryId":null,"ListUrlMain":null,"RegionNum":3,"RegionCategory":"农林科学","ArticlePicture":[],"TitleCN":null,"AbstractTextCN":null,"PMCID":"","EPubDate":null,"PubModel":null,"JCR":null,"JCRName":null,"Score":null,"Total":0}
Pub Date : 2022-08-01DOI: 10.1017/S1742170522000205
Yang Gao, Xue Yao, Chen Chen, Ziheng Niu
Abstract Determining an effective approach to replacing chemical fertilizer with organic fertilizer is a difficult challenge for the Chinese government. This paper constructs a dynamic analysis framework with broader application than previous statistical and case studies by theoretically deriving the impact of farmers' participation in contract farming on their organic fertilizer application behavior. The framework analyzes farmers' intertemporal organic fertilizer application behavior under the two scenarios of participation and nonparticipation in contract farming. Participation in contract farming positively impacts organic fertilizer application behavior in both the short and long terms. Survey data from 473 vegetable farmers in Shandong province of China were used to conduct an empirical analysis, and the endogenous switching probit model was used to solve the endogeneity problem of farmers' participation in contract farming. The empirical analysis supports the above results: farmers' participation in contract farming increases their probability of applying organic fertilizer by 50.7%. Robustness tests conducted using the recursive bivariate probit model and replacing the dependent variable (the intensity with which farmers replace chemical fertilizer with organic fertilizer) confirm the research results. Further heterogeneity analysis shows that farmers' participation in contract farming has a more obvious promoting effect on organic fertilizer application behavior in the older group, the group with an education level of primary school or below and the small-scale farming group. Therefore, the government should promote participation in contract farming, especially among elderly, low-education and small-scale farmers, to improve the adoption level of organic fertilizer in China.
{"title":"Can farmers' participation in contract farming promote the application of organic fertilizer? Empirical evidence from a sample of vegetable farmers in Shandong province of China","authors":"Yang Gao, Xue Yao, Chen Chen, Ziheng Niu","doi":"10.1017/S1742170522000205","DOIUrl":"https://doi.org/10.1017/S1742170522000205","url":null,"abstract":"Abstract Determining an effective approach to replacing chemical fertilizer with organic fertilizer is a difficult challenge for the Chinese government. This paper constructs a dynamic analysis framework with broader application than previous statistical and case studies by theoretically deriving the impact of farmers' participation in contract farming on their organic fertilizer application behavior. The framework analyzes farmers' intertemporal organic fertilizer application behavior under the two scenarios of participation and nonparticipation in contract farming. Participation in contract farming positively impacts organic fertilizer application behavior in both the short and long terms. Survey data from 473 vegetable farmers in Shandong province of China were used to conduct an empirical analysis, and the endogenous switching probit model was used to solve the endogeneity problem of farmers' participation in contract farming. The empirical analysis supports the above results: farmers' participation in contract farming increases their probability of applying organic fertilizer by 50.7%. Robustness tests conducted using the recursive bivariate probit model and replacing the dependent variable (the intensity with which farmers replace chemical fertilizer with organic fertilizer) confirm the research results. Further heterogeneity analysis shows that farmers' participation in contract farming has a more obvious promoting effect on organic fertilizer application behavior in the older group, the group with an education level of primary school or below and the small-scale farming group. Therefore, the government should promote participation in contract farming, especially among elderly, low-education and small-scale farmers, to improve the adoption level of organic fertilizer in China.","PeriodicalId":54495,"journal":{"name":"Renewable Agriculture and Food Systems","volume":"37 1","pages":"479 - 489"},"PeriodicalIF":2.7,"publicationDate":"2022-08-01","publicationTypes":"Journal Article","fieldsOfStudy":null,"isOpenAccess":false,"openAccessPdf":"","citationCount":null,"resultStr":null,"platform":"Semanticscholar","paperid":"48892225","PeriodicalName":null,"FirstCategoryId":null,"ListUrlMain":null,"RegionNum":3,"RegionCategory":"农林科学","ArticlePicture":[],"TitleCN":null,"AbstractTextCN":null,"PMCID":"","EPubDate":null,"PubModel":null,"JCR":null,"JCRName":null,"Score":null,"Total":0}
Pub Date : 2022-07-28DOI: 10.1017/S1742170522000217
E. Reid, M. B. Samuelson, H. Blanco‐Canqui, R. Drijber, I. Kadoma, S. Wortman
Abstract Biodegradable and biobased mulch films and fabrics (BDMs) are potentially sustainable alternatives to polyethylene plastic mulch film (PE) in vegetable production because BDMs can be incorporated into the soil by tillage at the end of the growing season for decomposition. However, grower adoption has been limited in part by concerns about slow degradation rates and possible adverse effects on soil health and productivity. The objective of this study was to measure the effects of soil incorporated residues from two BDMs and compost on soil chemical and physical properties and vegetable crop yield across two diverse locations [Lincoln (LNK) and Scottsbluff (SBF), NE, USA] during a 2-yr study. The BDMs, including a polylactic acid biofabric with embedded wood particles (PLA; 1.14 mm thick and 298 g m−2), and a starch-polyester bioplastic mulch film (STP; 0.015 mm thick and 20 g m−2), were applied in May 2017 for vegetable production. Mulches were incorporated in soil by tillage in September 2017 in half of the experimental plots and removed in the other half as a control. Compost was applied in fall 2017 and 2018 at rates between 42 and 60 Mg ha−1 to establish high and low (no compost) fertility soil environments within each location. Sweet corn (Zea mays) was grown in 2018 and cabbage (Brassica oleraceae) in 2019, and yield data were collected. The soil was sampled at ~6 month intervals for two years. The BDM residues had little effect on soil pH, organic matter or physical properties, but the incorporation of PLA in the soil at SBF reduced soil nitrate 6 months after the incorporation of residues. Nitrogen immobilization likely contributed to the 16% ± 5% reduction in sweet corn yield observed at SBF in plots without compost where BDM residues were incorporated compared to removed. No additional yield differences were detected in sweet corn (2018) or cabbage (2019) across locations or treatments, which suggests that BDM residues are less likely to immobilize nitrogen and reduce yield in high fertility soil environments. Given the potential environmental benefits of BDMs as an alternative to PE, future research should seek to mitigate the negative effects of BDM residues on crop yield, particularly in lower fertility soils.
摘要可生物降解和生物基地膜和织物（BDMs）是蔬菜生产中聚乙烯塑料地膜（PE）的潜在可持续替代品，因为BDMs可以在生长季节结束时通过耕作融入土壤中进行分解。然而，种植者的采用在一定程度上受到了限制，因为他们担心缓慢的退化速度以及可能对土壤健康和生产力产生的不利影响。本研究的目的是在一项为期2年的研究中，测量两种BDM和堆肥中掺入土壤的残留物对两个不同地区[Lincoln（LNK）和Scottsbluff（SBF），NE，USA]土壤化学和物理性质以及蔬菜产量的影响。BDM，包括嵌入木材颗粒的聚乳酸生物纤维（PLA；1.14 mm厚，298 g m−2）和淀粉聚酯生物塑料地膜（STP；0.015 mm厚，20 g m−1），于2017年5月应用于蔬菜生产。2017年9月，一半的试验地块通过耕作将地膜纳入土壤，另一半则作为对照移除。2017年秋季和2018年秋季，堆肥施用量在42至60 Mg ha−1之间，以在每个地点建立高肥力和低肥力（无堆肥）的土壤环境。甜玉米（玉米）于2018年种植，卷心菜（甘蓝科）于2019年种植，并收集了产量数据。土壤取样间隔约6个月，为期两年。BDM残留物对土壤pH、有机质或物理性质影响不大，但在SBF条件下，PLA在土壤中的掺入降低了残留物掺入后6个月的土壤硝酸盐含量。在没有堆肥的地块中，与去除BDM残留物相比，氮固定可能导致SBF下甜玉米产量下降16%±5%。甜玉米（2018）或卷心菜（2019）在不同地点或处理中没有发现额外的产量差异，这表明BDM残留物在高肥力土壤环境中不太可能固定氮并降低产量。鉴于BDM作为PE的替代品具有潜在的环境效益，未来的研究应寻求减轻BDM残留物对作物产量的负面影响，特别是在肥力较低的土壤中。
{"title":"Biodegradable and biobased mulch residues had limited impacts on soil properties but reduced yield of the following crop in a low fertility soil","authors":"E. Reid, M. B. Samuelson, H. Blanco‐Canqui, R. Drijber, I. Kadoma, S. Wortman","doi":"10.1017/S1742170522000217","DOIUrl":"https://doi.org/10.1017/S1742170522000217","url":null,"abstract":"Abstract Biodegradable and biobased mulch films and fabrics (BDMs) are potentially sustainable alternatives to polyethylene plastic mulch film (PE) in vegetable production because BDMs can be incorporated into the soil by tillage at the end of the growing season for decomposition. However, grower adoption has been limited in part by concerns about slow degradation rates and possible adverse effects on soil health and productivity. The objective of this study was to measure the effects of soil incorporated residues from two BDMs and compost on soil chemical and physical properties and vegetable crop yield across two diverse locations [Lincoln (LNK) and Scottsbluff (SBF), NE, USA] during a 2-yr study. The BDMs, including a polylactic acid biofabric with embedded wood particles (PLA; 1.14 mm thick and 298 g m−2), and a starch-polyester bioplastic mulch film (STP; 0.015 mm thick and 20 g m−2), were applied in May 2017 for vegetable production. Mulches were incorporated in soil by tillage in September 2017 in half of the experimental plots and removed in the other half as a control. Compost was applied in fall 2017 and 2018 at rates between 42 and 60 Mg ha−1 to establish high and low (no compost) fertility soil environments within each location. Sweet corn (Zea mays) was grown in 2018 and cabbage (Brassica oleraceae) in 2019, and yield data were collected. The soil was sampled at ~6 month intervals for two years. The BDM residues had little effect on soil pH, organic matter or physical properties, but the incorporation of PLA in the soil at SBF reduced soil nitrate 6 months after the incorporation of residues. Nitrogen immobilization likely contributed to the 16% ± 5% reduction in sweet corn yield observed at SBF in plots without compost where BDM residues were incorporated compared to removed. No additional yield differences were detected in sweet corn (2018) or cabbage (2019) across locations or treatments, which suggests that BDM residues are less likely to immobilize nitrogen and reduce yield in high fertility soil environments. Given the potential environmental benefits of BDMs as an alternative to PE, future research should seek to mitigate the negative effects of BDM residues on crop yield, particularly in lower fertility soils.","PeriodicalId":54495,"journal":{"name":"Renewable Agriculture and Food Systems","volume":"37 1","pages":"490 - 503"},"PeriodicalIF":2.7,"publicationDate":"2022-07-28","publicationTypes":"Journal Article","fieldsOfStudy":null,"isOpenAccess":false,"openAccessPdf":"","citationCount":null,"resultStr":null,"platform":"Semanticscholar","paperid":"43265227","PeriodicalName":null,"FirstCategoryId":null,"ListUrlMain":null,"RegionNum":3,"RegionCategory":"农林科学","ArticlePicture":[],"TitleCN":null,"AbstractTextCN":null,"PMCID":"","EPubDate":null,"PubModel":null,"JCR":null,"JCRName":null,"Score":null,"Total":0}
Pub Date : 2022-07-11DOI: 10.1017/S1742170522000199
Monika H. Egerer
Abstract The diversity and distribution of wild bees are dramatically changing due to habitat fragmentation, agricultural intensification and climate change. In cities, urban gardens are proposed ‘island’ habitats for bees offering floral and nesting resources. Yet, it is largely unclear how gardens play a role in changes in species diversity and distribution. This paper reports on the discovery of a bee species to our knowledge previously undocumented in the region of Berlin, Germany. We discovered Lasioglossum limbellum in a community garden created on concrete slabs of annual and perennial vegetation. As a cavity nester in soft rock cliffs—a natural habitat functionally not existent in urban areas—the life history of this species makes this discovery particularly interesting, and an opportunity to explore the role of urban gardens in biodiversity change. This report aims to spur future research, reporting and discussion on the changes in diversity and distribution of wild bees specifically in urban areas.
{"title":"Bee discovery suggests the importance of urban gardens in a changing world","authors":"Monika H. Egerer","doi":"10.1017/S1742170522000199","DOIUrl":"https://doi.org/10.1017/S1742170522000199","url":null,"abstract":"Abstract The diversity and distribution of wild bees are dramatically changing due to habitat fragmentation, agricultural intensification and climate change. In cities, urban gardens are proposed ‘island’ habitats for bees offering floral and nesting resources. Yet, it is largely unclear how gardens play a role in changes in species diversity and distribution. This paper reports on the discovery of a bee species to our knowledge previously undocumented in the region of Berlin, Germany. We discovered Lasioglossum limbellum in a community garden created on concrete slabs of annual and perennial vegetation. As a cavity nester in soft rock cliffs—a natural habitat functionally not existent in urban areas—the life history of this species makes this discovery particularly interesting, and an opportunity to explore the role of urban gardens in biodiversity change. This report aims to spur future research, reporting and discussion on the changes in diversity and distribution of wild bees specifically in urban areas.","PeriodicalId":54495,"journal":{"name":"Renewable Agriculture and Food Systems","volume":"37 1","pages":"371 - 374"},"PeriodicalIF":2.7,"publicationDate":"2022-07-11","publicationTypes":"Journal Article","fieldsOfStudy":null,"isOpenAccess":false,"openAccessPdf":"","citationCount":null,"resultStr":null,"platform":"Semanticscholar","paperid":"49431634","PeriodicalName":null,"FirstCategoryId":null,"ListUrlMain":null,"RegionNum":3,"RegionCategory":"农林科学","ArticlePicture":[],"TitleCN":null,"AbstractTextCN":null,"PMCID":"","EPubDate":null,"PubModel":null,"JCR":null,"JCRName":null,"Score":null,"Total":0}
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