Pub Date : 2023-08-01DOI: 10.4067/s0718-58392023000400444
A. D. Sánchez-Reinoso, C. Zuluaga-Domínguez, L. Lombardini, H. Restrepo-Díaz
The use of biochar (BC) seems to be a promising alternative for efficient and environmentally friendly waste management that could help to promote cleaner agricultural production. The objective of this research was to evaluate the aromatic profile of coffee ( Coffea arabica L.) beans and cup quality parameters in response to the application of four different doses of biochar (0, 4, 8, and 16 t ha -1 ) obtained from coffee pulp, and four levels of chemical fertilization (CF) (0%, 33%, 66% and 100% of nutritional requirements). An electronic nose was used to analyze volatile compounds and their relationship with coffee quality parameters: Soluble solids (TSS), pH, titratable acidity. Applications of 8 and 16 t ha -1 BC and 66% and 100% CF registered greater sensitivity to the aromatic compounds of roasted coffee beans in sensors W1C, W3C, and W5C. The BC amendments between 8 and 16 t ha -1 and CF 66% and 100% increased the TSS content (CF 66%: 1.32 °Brix and CF 100%: 1.38 °Brix), reduced the pH (CF 66%: 4.95 and CF 100%: 4.88) and increased titratable acidity (CF 66%: 697.88 mg CaCO 3 L -1 and CF 100%: 662.56 mg CaCO 3 L -1 ) in beverages of ‘Castillo El Tambo’ coffee bean in the year 2020. Finally, the co-application of BC as a complement to CF showed a positive effect on the aromatic profile. This methodology could be an original approach to characterize beans according to the coffee crop’s nutritional status, helping in factors focused on quality and traceability.
生物炭(BC)的使用似乎是有效和环境友好型废物管理的一种有前途的替代方法，可以帮助促进更清洁的农业生产。本研究的目的是评价4种不同剂量的生物炭(0、4、8和16 t / ha -1)和4种不同水平的化肥(CF)(0%、33%、66%和100%营养需要量)对阿拉比卡咖啡(Coffea arabica L.)咖啡豆芳香特征和杯形品质参数的影响。利用电子鼻分析了咖啡挥发性成分及其与咖啡品质参数:可溶性固形物(TSS)、pH、可滴定酸度的关系。在传感器W1C、W3C和W5C中，应用8和16吨-1 BC和66%和100% CF对烘焙咖啡豆的芳香化合物更敏感。BC在8 ~ 16 t ha -1和CF 66%和100%之间的添加增加了2020年“Castillo El Tambo”咖啡豆饮料中的TSS含量(CF 66%: 1.32°Brix和CF 100%: 1.38°Brix)，降低了pH (CF 66%: 4.95和CF 100%: 4.88)，增加了可滴定酸度(CF 66%: 697.88 mg CaCO 3 L -1和CF 100%: 662.56 mg CaCO 3 L -1)。最后，BC作为CF的补体共施对其芳香谱有积极的影响。这种方法可能是一种根据咖啡作物的营养状况来描述咖啡豆的原始方法，有助于关注质量和可追溯性的因素。
{"title":"Evaluation of volatile compounds in coffee (Coffea arabica L.) beans in response to biochar applications using an electronic nose","authors":"A. D. Sánchez-Reinoso, C. Zuluaga-Domínguez, L. Lombardini, H. Restrepo-Díaz","doi":"10.4067/s0718-58392023000400444","DOIUrl":"https://doi.org/10.4067/s0718-58392023000400444","url":null,"abstract":"The use of biochar (BC) seems to be a promising alternative for efficient and environmentally friendly waste management that could help to promote cleaner agricultural production. The objective of this research was to evaluate the aromatic profile of coffee ( Coffea arabica L.) beans and cup quality parameters in response to the application of four different doses of biochar (0, 4, 8, and 16 t ha -1 ) obtained from coffee pulp, and four levels of chemical fertilization (CF) (0%, 33%, 66% and 100% of nutritional requirements). An electronic nose was used to analyze volatile compounds and their relationship with coffee quality parameters: Soluble solids (TSS), pH, titratable acidity. Applications of 8 and 16 t ha -1 BC and 66% and 100% CF registered greater sensitivity to the aromatic compounds of roasted coffee beans in sensors W1C, W3C, and W5C. The BC amendments between 8 and 16 t ha -1 and CF 66% and 100% increased the TSS content (CF 66%: 1.32 °Brix and CF 100%: 1.38 °Brix), reduced the pH (CF 66%: 4.95 and CF 100%: 4.88) and increased titratable acidity (CF 66%: 697.88 mg CaCO 3 L -1 and CF 100%: 662.56 mg CaCO 3 L -1 ) in beverages of ‘Castillo El Tambo’ coffee bean in the year 2020. Finally, the co-application of BC as a complement to CF showed a positive effect on the aromatic profile. This methodology could be an original approach to characterize beans according to the coffee crop’s nutritional status, helping in factors focused on quality and traceability.","PeriodicalId":9851,"journal":{"name":"Chilean Journal of Agricultural Research","volume":" ","pages":""},"PeriodicalIF":1.7,"publicationDate":"2023-08-01","publicationTypes":"Journal Article","fieldsOfStudy":null,"isOpenAccess":false,"openAccessPdf":"","citationCount":null,"resultStr":null,"platform":"Semanticscholar","paperid":"44342707","PeriodicalName":null,"FirstCategoryId":null,"ListUrlMain":null,"RegionNum":4,"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 : 2023-08-01DOI: 10.4067/s0718-58392023000400432
José M. Osuna-Rodríguez, S. Hernández-Verdugo, T. Osuna-Enciso, Antonio Pacheco-Olvera, S. Parra-Terraza, C. E. Romero-Higareda, J. E. Retes-Manjarrez
{"title":"Variations in salinity tolerance in wild pepper (Capsicum annuum L. var. glabriusculum) populations","authors":"José M. Osuna-Rodríguez, S. Hernández-Verdugo, T. Osuna-Enciso, Antonio Pacheco-Olvera, S. Parra-Terraza, C. E. Romero-Higareda, J. E. Retes-Manjarrez","doi":"10.4067/s0718-58392023000400432","DOIUrl":"https://doi.org/10.4067/s0718-58392023000400432","url":null,"abstract":"","PeriodicalId":9851,"journal":{"name":"Chilean Journal of Agricultural Research","volume":" ","pages":""},"PeriodicalIF":1.7,"publicationDate":"2023-08-01","publicationTypes":"Journal Article","fieldsOfStudy":null,"isOpenAccess":false,"openAccessPdf":"","citationCount":null,"resultStr":null,"platform":"Semanticscholar","paperid":"44511565","PeriodicalName":null,"FirstCategoryId":null,"ListUrlMain":null,"RegionNum":4,"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 : 2023-08-01DOI: 10.4067/s0718-58392023000400484
Yessica Salvadores, R. Bastías
Climate change is increasing sweet cherry ( Prunus avium (L.) L.) production under cover systems such as high tunnels, rain covers, and nets. The objective of this review was to provide an overview of the environmental factors and physiological responses involved in cherry production under different types of protective covering systems. The most important environmental factors affected by cover systems are photosynthetically active radiation (PAR), temperature, relative humidity, and wind speed, which in turn affect leaf gas exchange, plant water relations, tree growth, flower development, and fruit quality. The use of covering systems has a positive effect on photosynthesis by increasing the amount of diffused PAR, but a negative effect on the reproductive-vegetative tree balance due to lower total PAR availability. Increases in air temperature by cover systems alter differentially flowering and fruit set, impacting positively the ripening time and cell division of the fruits. Plant water status is improved under cover systems, allowing for greater tolerance to water deficit as well as improved potential fruit cell expansion, with an ensuing positive effect on fruit size, but decreasing fruit firmness due to lower Ca availability fruits. The multiple environmental factors and physiological responses observed in cherry production under cover systems suggest the need to adjust agronomic practices such as pruning, crop load regulation, irrigation, and nutrition according to these specific conditions.
{"title":"Environmental factors and physiological responses of sweet cherry production under protective cover systems: A review","authors":"Yessica Salvadores, R. Bastías","doi":"10.4067/s0718-58392023000400484","DOIUrl":"https://doi.org/10.4067/s0718-58392023000400484","url":null,"abstract":"Climate change is increasing sweet cherry ( Prunus avium (L.) L.) production under cover systems such as high tunnels, rain covers, and nets. The objective of this review was to provide an overview of the environmental factors and physiological responses involved in cherry production under different types of protective covering systems. The most important environmental factors affected by cover systems are photosynthetically active radiation (PAR), temperature, relative humidity, and wind speed, which in turn affect leaf gas exchange, plant water relations, tree growth, flower development, and fruit quality. The use of covering systems has a positive effect on photosynthesis by increasing the amount of diffused PAR, but a negative effect on the reproductive-vegetative tree balance due to lower total PAR availability. Increases in air temperature by cover systems alter differentially flowering and fruit set, impacting positively the ripening time and cell division of the fruits. Plant water status is improved under cover systems, allowing for greater tolerance to water deficit as well as improved potential fruit cell expansion, with an ensuing positive effect on fruit size, but decreasing fruit firmness due to lower Ca availability fruits. The multiple environmental factors and physiological responses observed in cherry production under cover systems suggest the need to adjust agronomic practices such as pruning, crop load regulation, irrigation, and nutrition according to these specific conditions.","PeriodicalId":9851,"journal":{"name":"Chilean Journal of Agricultural Research","volume":" ","pages":""},"PeriodicalIF":1.7,"publicationDate":"2023-08-01","publicationTypes":"Journal Article","fieldsOfStudy":null,"isOpenAccess":false,"openAccessPdf":"","citationCount":null,"resultStr":null,"platform":"Semanticscholar","paperid":"46379055","PeriodicalName":null,"FirstCategoryId":null,"ListUrlMain":null,"RegionNum":4,"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 : 2023-08-01DOI: 10.4067/s0718-58392023000400398
Cloe D. Álvarez-García, C. Arriaga-Jordán, J. Estrada-Flores, F. López-González
The conservation of forage as silage allows its application during the dry season in dairy cattle feeding. The most commonly used forage for this purpose is maize ( Zea mays L.), but due to the possible effects of climate change, the diversification of crops with shorter agronomic cycles as wheat ( Triticum aestivum L.) should be considered. Therefore, the objective was to evaluate the chemical composition of silages, the productive response of dairy cows fed wheat and maize silage, as well as their feeding costs. Three treatments were evaluated with 9.8 kg DM cow -1 d -1 silage plus 4.6 kg DM cow -1 d -1 commercial concentrate each. Treatments were 100% wheat silage (WS), 50% wheat silage-50% maize silage (WMS), and 100% maize silage (MS). Six Holstein cows were used in groups of three randomly assigned to treatment sequence in a 3×3 Latin square design repeated twice. There were significant differences (P < 0.05) between treatments in silage chemical composition, except in NDF and ADF (P > 0.05). There were nonsignificant differences in animal variables (P > 0.05) with mean milk yield of 15.4 kg cow -1 d -1 , 33.7 g kg -1 milkfat, 30.5 g kg -1 milk protein, 481.2 kg live weight and 2.1 body condition score. There were significant differences (P < 0.05) in silage and total DM intake in the third experimental period (three periods, 14 d each one) with 8.1 and 12.7 kg DM cow -1 d -1 , respectively. Although cost for wheat silage were higher than maize silage, all three treatments showed positive margins on feeding costs.
饲料作为青贮饲料的保护使其能够在旱季用于奶牛饲养。为此，最常用的饲料是玉米（Zea mays L.），但由于气候变化的可能影响，应考虑小麦（Triticum aestivum L.）等农艺周期较短的作物的多样化。因此，目的是评估青贮饲料的化学成分、饲喂小麦和玉米青贮饲料的奶牛的生产反应以及它们的饲养成本。对三个处理进行了评估，分别用9.8公斤DM奶牛-1天-1的青贮饲料和4.6公斤DM奶牛-1天-1的商业浓缩物。处理为100%小麦青贮（WS）、50%小麦青贮50%玉米青贮（WMS）和100%玉米青贮（MS）。六头荷斯坦奶牛被随机分为三组，每组三头，按照3×3拉丁方设计的处理顺序重复两次。除NDF和ADF外，不同处理的青贮饲料化学成分差异有显著性（P＜0.05）。15.4kg奶牛-1 d-1、33.7 g kg-1乳脂、30.5 g kg-1乳蛋白、481.2 kg活重和2.1身体状况评分的动物变量差异无显著性（P>0.05）。在第三个实验期（三个阶段，每个阶段14天），8.1和12.7kg DM奶牛的青贮饲料和总DM摄入量分别存在显著差异（P＜0.05）。尽管小麦青贮饲料的成本高于玉米青贮饲料，但三种处理都显示出饲料成本的正利润。
{"title":"Wheat or maize silage in feeding strategies for cows in small-scale dairy systems during the dry season","authors":"Cloe D. Álvarez-García, C. Arriaga-Jordán, J. Estrada-Flores, F. López-González","doi":"10.4067/s0718-58392023000400398","DOIUrl":"https://doi.org/10.4067/s0718-58392023000400398","url":null,"abstract":"The conservation of forage as silage allows its application during the dry season in dairy cattle feeding. The most commonly used forage for this purpose is maize ( Zea mays L.), but due to the possible effects of climate change, the diversification of crops with shorter agronomic cycles as wheat ( Triticum aestivum L.) should be considered. Therefore, the objective was to evaluate the chemical composition of silages, the productive response of dairy cows fed wheat and maize silage, as well as their feeding costs. Three treatments were evaluated with 9.8 kg DM cow -1 d -1 silage plus 4.6 kg DM cow -1 d -1 commercial concentrate each. Treatments were 100% wheat silage (WS), 50% wheat silage-50% maize silage (WMS), and 100% maize silage (MS). Six Holstein cows were used in groups of three randomly assigned to treatment sequence in a 3×3 Latin square design repeated twice. There were significant differences (P < 0.05) between treatments in silage chemical composition, except in NDF and ADF (P > 0.05). There were nonsignificant differences in animal variables (P > 0.05) with mean milk yield of 15.4 kg cow -1 d -1 , 33.7 g kg -1 milkfat, 30.5 g kg -1 milk protein, 481.2 kg live weight and 2.1 body condition score. There were significant differences (P < 0.05) in silage and total DM intake in the third experimental period (three periods, 14 d each one) with 8.1 and 12.7 kg DM cow -1 d -1 , respectively. Although cost for wheat silage were higher than maize silage, all three treatments showed positive margins on feeding costs.","PeriodicalId":9851,"journal":{"name":"Chilean Journal of Agricultural Research","volume":" ","pages":""},"PeriodicalIF":1.7,"publicationDate":"2023-08-01","publicationTypes":"Journal Article","fieldsOfStudy":null,"isOpenAccess":false,"openAccessPdf":"","citationCount":null,"resultStr":null,"platform":"Semanticscholar","paperid":"44843944","PeriodicalName":null,"FirstCategoryId":null,"ListUrlMain":null,"RegionNum":4,"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 : 2023-08-01DOI: 10.4067/s0718-58392023000400418
J. Hirzel, Jorge Retamal-Salgado, C. Balbontín, P. Muñoz-Vega, E. Moya-Elizondo
Legacy and Duke are the main blueberry ( Vaccinium corymbosum L.) cultivars grown in Chile, with 32.8% of the total Chilean cultivated area with this fruit. The market demands fruit firmness, size, weight, and quality attributes, which are improved by some agronomic management practices such as winter pruning. The present study evaluated the effect on blueberry quality attributes and fruit yield of five fruit bud load levels, regulated by winter pruning during two consecutive seasons, on ʻLegacyʼ and ʻDukeʼ. The study was conducted in three commercial orchards under different soil conditions (Inceptisol, Andisol, and Entisol) in south-central Chile. Results indicated that there were differences in fruit load treatments between seasons, orchards, load levels, and week of harvest (first or second). Reducing the fruit bud load by winter pruning improved quality attributes of fruit firmness, size and weight, but negatively affected production per plant. We found in two seasons that pruning 60% of the fruit bud load level had the highest values for fruit firmness, size, and weight in both blueberry cultivars, but the production was 70% and 86% of the potential in ‘Duke’ and ‘Legacy’, respectively.
{"title":"Effect of load regulation by winter pruning on fruit quality attributes of Duke and Legacy blueberry cultivars","authors":"J. Hirzel, Jorge Retamal-Salgado, C. Balbontín, P. Muñoz-Vega, E. Moya-Elizondo","doi":"10.4067/s0718-58392023000400418","DOIUrl":"https://doi.org/10.4067/s0718-58392023000400418","url":null,"abstract":"Legacy and Duke are the main blueberry ( Vaccinium corymbosum L.) cultivars grown in Chile, with 32.8% of the total Chilean cultivated area with this fruit. The market demands fruit firmness, size, weight, and quality attributes, which are improved by some agronomic management practices such as winter pruning. The present study evaluated the effect on blueberry quality attributes and fruit yield of five fruit bud load levels, regulated by winter pruning during two consecutive seasons, on ʻLegacyʼ and ʻDukeʼ. The study was conducted in three commercial orchards under different soil conditions (Inceptisol, Andisol, and Entisol) in south-central Chile. Results indicated that there were differences in fruit load treatments between seasons, orchards, load levels, and week of harvest (first or second). Reducing the fruit bud load by winter pruning improved quality attributes of fruit firmness, size and weight, but negatively affected production per plant. We found in two seasons that pruning 60% of the fruit bud load level had the highest values for fruit firmness, size, and weight in both blueberry cultivars, but the production was 70% and 86% of the potential in ‘Duke’ and ‘Legacy’, respectively.","PeriodicalId":9851,"journal":{"name":"Chilean Journal of Agricultural Research","volume":" ","pages":""},"PeriodicalIF":1.7,"publicationDate":"2023-08-01","publicationTypes":"Journal Article","fieldsOfStudy":null,"isOpenAccess":false,"openAccessPdf":"","citationCount":null,"resultStr":null,"platform":"Semanticscholar","paperid":"46697979","PeriodicalName":null,"FirstCategoryId":null,"ListUrlMain":null,"RegionNum":4,"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 : 2023-08-01DOI: 10.4067/s0718-58392023000400408
Yang Chen, Chang Liu, Feng Zhu, Tongjun Gao, Guoqi Chen
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{"title":"Proliferative capacity in relation to metamifop resistance in Echinochloa glabrescens: A case study","authors":"Yang Chen, Chang Liu, Feng Zhu, Tongjun Gao, Guoqi Chen","doi":"10.4067/s0718-58392023000400408","DOIUrl":"https://doi.org/10.4067/s0718-58392023000400408","url":null,"abstract":".","PeriodicalId":9851,"journal":{"name":"Chilean Journal of Agricultural Research","volume":" ","pages":""},"PeriodicalIF":1.7,"publicationDate":"2023-08-01","publicationTypes":"Journal Article","fieldsOfStudy":null,"isOpenAccess":false,"openAccessPdf":"","citationCount":null,"resultStr":null,"platform":"Semanticscholar","paperid":"48548936","PeriodicalName":null,"FirstCategoryId":null,"ListUrlMain":null,"RegionNum":4,"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 : 2023-06-01DOI: 10.4067/s0718-58392023000300358
S. Altunbaş
{"title":"Heavy metals concentration and availability of serpentine soils in southwestern Turkey","authors":"S. Altunbaş","doi":"10.4067/s0718-58392023000300358","DOIUrl":"https://doi.org/10.4067/s0718-58392023000300358","url":null,"abstract":"","PeriodicalId":9851,"journal":{"name":"Chilean Journal of Agricultural Research","volume":" ","pages":""},"PeriodicalIF":1.7,"publicationDate":"2023-06-01","publicationTypes":"Journal Article","fieldsOfStudy":null,"isOpenAccess":false,"openAccessPdf":"","citationCount":null,"resultStr":null,"platform":"Semanticscholar","paperid":"47236588","PeriodicalName":null,"FirstCategoryId":null,"ListUrlMain":null,"RegionNum":4,"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 : 2023-06-01DOI: 10.4067/s0718-58392023000300347
A. Wihardjaka, Elisabeth Srihayu Harsanti, N. A. Viandari, H. Zu’amah
Rice ( Oryza sativa L.) production in the future aims to increase productivity every year with high input technology, including irrigated rice. However, the practices of irrigated rice fields have a high methane (CH 4 ) production potential. Soil tillage could affect CH 4 emission conditions. Puddling and flooding through soil tillage create reduction conditions that promote CH 4 production by methanogenic bacteria. The objective was to determine the effect of soil tillage and N fertilizer management on CH 4 emissions from rice fields with heavy-textured soil. The field experiment was arranged in a split-plot design in which soil tillage was the main plot and consisted of maximum tillage and no-tillage. Nitrogen fertilizer management was the split plot and consisted of a control without N, prilled urea broadcasting, prilled urea deep placement, ammonium sulfate (AS) broadcasting, AS deep placement, and tablet urea deep placement. No-tillage could reduce CH 4 emissions by 15.58% compared with maximum tillage. However, grain yield for no-tillage was lower than for maximum tillage with 2.73 and 3.68 t ha -1 , respectively. The AS and tablet urea deep placement emitted lower CH 4 and grain yield was higher than with other N management practices. The CH 4 emissions for AS and tablet urea deep placement was 96 and 97 kg CH 4 ha -1 season -1 and grain yield was 3.79 and 4.25 t ha -1 , respectively. The application of fertilizers incorporated into the soil increased rice productivity and mitigated CH 4 emissions from rice fields.
未来的水稻生产旨在通过包括灌溉水稻在内的高投入技术每年提高生产力。然而，灌溉稻田的做法具有很高的甲烷（CH4）生产潜力。土壤耕作可能影响CH4的排放条件。通过土壤耕作进行的施肥和淹水创造了减少甲烷细菌产生CH4的条件。目的是确定土壤耕作和氮肥管理对重质地土壤稻田CH4排放的影响。田间试验采用分块设计，以土壤耕作为主，包括最大限度耕作和免耕。氮肥管理是一个分块区，由不施氮的对照、尿素撒播、尿素深层撒播、硫酸铵（AS）撒播、AS深层撒播和尿素片深层撒播组成。与免耕相比，免耕可减少15.58%的CH4排放。然而，免耕的粮食产量低于免耕，分别为2.73和3.68t ha-1。与其他氮管理措施相比，施用AS和片剂尿素深层处理释放的CH4较低，籽粒产量较高。AS和片剂尿素深埋的CH4排放量分别为96和97 kg CH4 ha-1季1，粮食产量分别为3.79和4.25 t ha-1。在土壤中施用化肥提高了水稻生产力，减少了稻田的CH4排放。
{"title":"Effect of soil tillage and nitrogen fertilizer management on methane emissions from irrigated rice fields in Central Java, Indonesia","authors":"A. Wihardjaka, Elisabeth Srihayu Harsanti, N. A. Viandari, H. Zu’amah","doi":"10.4067/s0718-58392023000300347","DOIUrl":"https://doi.org/10.4067/s0718-58392023000300347","url":null,"abstract":"Rice ( Oryza sativa L.) production in the future aims to increase productivity every year with high input technology, including irrigated rice. However, the practices of irrigated rice fields have a high methane (CH 4 ) production potential. Soil tillage could affect CH 4 emission conditions. Puddling and flooding through soil tillage create reduction conditions that promote CH 4 production by methanogenic bacteria. The objective was to determine the effect of soil tillage and N fertilizer management on CH 4 emissions from rice fields with heavy-textured soil. The field experiment was arranged in a split-plot design in which soil tillage was the main plot and consisted of maximum tillage and no-tillage. Nitrogen fertilizer management was the split plot and consisted of a control without N, prilled urea broadcasting, prilled urea deep placement, ammonium sulfate (AS) broadcasting, AS deep placement, and tablet urea deep placement. No-tillage could reduce CH 4 emissions by 15.58% compared with maximum tillage. However, grain yield for no-tillage was lower than for maximum tillage with 2.73 and 3.68 t ha -1 , respectively. The AS and tablet urea deep placement emitted lower CH 4 and grain yield was higher than with other N management practices. The CH 4 emissions for AS and tablet urea deep placement was 96 and 97 kg CH 4 ha -1 season -1 and grain yield was 3.79 and 4.25 t ha -1 , respectively. The application of fertilizers incorporated into the soil increased rice productivity and mitigated CH 4 emissions from rice fields.","PeriodicalId":9851,"journal":{"name":"Chilean Journal of Agricultural Research","volume":" ","pages":""},"PeriodicalIF":1.7,"publicationDate":"2023-06-01","publicationTypes":"Journal Article","fieldsOfStudy":null,"isOpenAccess":false,"openAccessPdf":"","citationCount":null,"resultStr":null,"platform":"Semanticscholar","paperid":"43237474","PeriodicalName":null,"FirstCategoryId":null,"ListUrlMain":null,"RegionNum":4,"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 : 2023-06-01DOI: 10.4067/s0718-58392023000300293
M. Dinu, R. Soare, C. Babeanu, G. Hoza, M. Botu
{"title":"Effects of organic farming system on some nutritional parameters of tomatoes fruits at different ripening stages","authors":"M. Dinu, R. Soare, C. Babeanu, G. Hoza, M. Botu","doi":"10.4067/s0718-58392023000300293","DOIUrl":"https://doi.org/10.4067/s0718-58392023000300293","url":null,"abstract":"","PeriodicalId":9851,"journal":{"name":"Chilean Journal of Agricultural Research","volume":" ","pages":""},"PeriodicalIF":1.7,"publicationDate":"2023-06-01","publicationTypes":"Journal Article","fieldsOfStudy":null,"isOpenAccess":false,"openAccessPdf":"","citationCount":null,"resultStr":null,"platform":"Semanticscholar","paperid":"47110837","PeriodicalName":null,"FirstCategoryId":null,"ListUrlMain":null,"RegionNum":4,"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 : 2023-04-01DOI: 10.4067/s0718-58392023000200217
Jiaxu Wu, Haiyue Chen, Lihua Wang, G. Geng, G. Fan, Lihua Yu, Yuguang Wang
{"title":"Effects of filter mud applications on growth, physiological characteristics, and nutrient transfer pattern of sugar beet seedlings","authors":"Jiaxu Wu, Haiyue Chen, Lihua Wang, G. Geng, G. Fan, Lihua Yu, Yuguang Wang","doi":"10.4067/s0718-58392023000200217","DOIUrl":"https://doi.org/10.4067/s0718-58392023000200217","url":null,"abstract":"","PeriodicalId":9851,"journal":{"name":"Chilean Journal of Agricultural Research","volume":" ","pages":""},"PeriodicalIF":1.7,"publicationDate":"2023-04-01","publicationTypes":"Journal Article","fieldsOfStudy":null,"isOpenAccess":false,"openAccessPdf":"","citationCount":null,"resultStr":null,"platform":"Semanticscholar","paperid":"45570867","PeriodicalName":null,"FirstCategoryId":null,"ListUrlMain":null,"RegionNum":4,"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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