Pub Date : 2022-10-10DOI: 10.15406/freij.2022.05.00104
Gómez Fabian, Kees Sebastian, Vera Lucas, Cowper Coles Roberto, P. Juan
The progressive reduction of the forest surface to enable land destined for other productive activities and its subsequent abandonment, allowed the appearance of fragments of secondary forests, frequently dominated by carob trees. Prosopis alba that have been identified as a strategic biological resource of the Chaco Park, due to its characteristic of multipurpose tree, which gives it a high value for the management of secondary forests in areas abandoned by agriculture and livestock, offering at the same time an alternative productive. A fundamental aspect in the management of secondary forests of this species is the need to concentrate growth on the dominant trees, since the achievement of large-sized individuals is essential for supplying the wood industry. Within the framework of a project aimed at designing management tools that make it possible to make high forest production compatible with livestock. To this effect, preliminary results of the response of the forest mass as well as of the remaining individuals are presented against three intensities of selective thinning. The objective of the work is to have basic information that allows establishing sustainable management guidelines in secondary forests, in its initial stages for the provision of quality wood for forestry-industry with forestry-livestock production schemes.
{"title":"Evaluation of different felling intensities in management of secondary carob forests under silvopastoral use in the Humid Chaco","authors":"Gómez Fabian, Kees Sebastian, Vera Lucas, Cowper Coles Roberto, P. Juan","doi":"10.15406/freij.2022.05.00104","DOIUrl":"https://doi.org/10.15406/freij.2022.05.00104","url":null,"abstract":"The progressive reduction of the forest surface to enable land destined for other productive activities and its subsequent abandonment, allowed the appearance of fragments of secondary forests, frequently dominated by carob trees. Prosopis alba that have been identified as a strategic biological resource of the Chaco Park, due to its characteristic of multipurpose tree, which gives it a high value for the management of secondary forests in areas abandoned by agriculture and livestock, offering at the same time an alternative productive. A fundamental aspect in the management of secondary forests of this species is the need to concentrate growth on the dominant trees, since the achievement of large-sized individuals is essential for supplying the wood industry. Within the framework of a project aimed at designing management tools that make it possible to make high forest production compatible with livestock. To this effect, preliminary results of the response of the forest mass as well as of the remaining individuals are presented against three intensities of selective thinning. The objective of the work is to have basic information that allows establishing sustainable management guidelines in secondary forests, in its initial stages for the provision of quality wood for forestry-industry with forestry-livestock production schemes.","PeriodicalId":176249,"journal":{"name":"Forestry Research and Engineering: International Journal","volume":"3 1","pages":"0"},"PeriodicalIF":0.0,"publicationDate":"2022-10-10","publicationTypes":"Journal Article","fieldsOfStudy":null,"isOpenAccess":false,"openAccessPdf":"","citationCount":null,"resultStr":null,"platform":"Semanticscholar","paperid":"128633707","PeriodicalName":null,"FirstCategoryId":null,"ListUrlMain":null,"RegionNum":0,"RegionCategory":"","ArticlePicture":[],"TitleCN":null,"AbstractTextCN":null,"PMCID":"","EPubDate":null,"PubModel":null,"JCR":null,"JCRName":null,"Score":null,"Total":0}
Pub Date : 2020-03-18DOI: 10.15406/freij.2020.04.00099
Joachim Hjr Makoi
Despite the growing interest in irrigated agriculture in Malinyi District in Morogoro Region, its practice in Kilosa kwa Mpepo traditional irrigation scheme remains low in production and productivity compared with medium to modern irrigated agriculture. Since construction of medium to modern irrigated agriculture is expensive, matching crop requirement with resources available through land suitability evaluation is necessary to improve production and productivity in the area. Such important study however,ha.s not been undertaken in Kilosa kwa Mpepo traditional irrigation scheme proposed for modernization. This study, evaluates the land suitability of Kilosa kwa Mpepo traditional irrigation scheme for rice (Oryza sativa L.) and maize (Zea mays L.) cropping systems using FAO maximum limitation method. After matching land qualities with land use requirements, results indicated that soil wetness, soil physical characteristics, and soil fertility status were the major limiting factors affecting land quality within the proposed irrigation scheme. Results also showed that of the total area surveyed (i.e. 1,117 Ha) 25% was rated as highly suitable (S1), 37% as moderately suitable (S2) and 37% as marginally suitable (S3) for irrigated rice based cropping systems. However, after controlling floods the highly suitable (S1) to marginally suitable (S3) land observed was to a large extent related to soil physical property, leading to inadequate capacity to retain nutrients. Similarly, results of land suitability for irrigated maize based cropping systems indicated that of the total study area, 37% was rated as highly suitable (S1) and 63% as moderately suitable (S2). The moderately suitable land in the surveyed area was related to soil physical property and poor soil fertility status (i.e. texture and low pH). Taken together, these data suggest that well-designed irrigation infrastructures along with flood protection band and drainage structures may control and or reduce the incidence of floods and waterlogging conditions in the study area. Long-term fertility management requires consideration of use of organic materials such as manure and compost. Such programs need to maximize use efficiency and minimize environmental losses. Implementation of the proposed approach to optimizing land management will reverse the suitability of land from marginally suitable to highly suitable land thus delivering a range of socio-economic and agro-environmental benefits to the farmers in Kilosa kwa Mpepo village in Malinyi District
尽管莫罗戈罗地区的 Malinyi 县对灌溉农业的兴趣日益浓厚，但与中型和现代灌溉农业相比，Kilosa kwa Mpepo 传统灌溉计划的产量和生产率仍然较低。由于建设中型现代灌溉农业成本高昂，因此有必要通过土地适宜性评估使作物需求与可用资源相匹配，以提高该地区的产量和生产率。然而，在拟进行现代化改造的 Kilosa kwa Mpepo 传统灌溉计划中，尚未开展过此类重要研究。本研究采用粮农组织最大限制法，对基洛萨-克瓦-姆佩波（Kilosa kwa Mpepo）传统灌溉系统的水稻（Oryza sativa L.）和玉米（Zea mays L.）种植系统的土地适宜性进行了评估。在将土地质量与土地利用要求相匹配后，结果表明，土壤湿度、土壤物理特征和土壤肥力状况是影响拟议灌溉计划中土地质量的主要限制因素。结果还显示，在调查的总面积（即 1,117 公顷）中，25% 的土地被评为非常适合（S1），37% 的土地被评为中等适合（S2），37% 的土地被评为非常不适合（S3），这些土地都适合灌溉水稻种植系统。然而，在控制洪水后，观察到的高度适宜（S1）至轻度适宜（S3）的土地在很大程度上与土壤物理特性有关，导致养分保持能力不足。同样，玉米灌溉种植系统的土地适宜性结果表明，在整个研究区域中，37% 的土地被评为高度适宜（S1），63% 的土地被评为中度适宜（S2）。调查区域的中度适宜土地与土壤物理特性和贫瘠的土壤肥力状况（即质地和低 pH 值）有关。综合来看，这些数据表明，设计合理的灌溉基础设施以及防洪带和排水结构可控制或减少研究区域的洪水和内涝情况。长期肥力管理需要考虑使用粪肥和堆肥等有机材料。此类计划需要最大限度地提高使用效率，减少环境损失。实施建议的优化土地管理方法将使土地的适宜性从勉强适宜转变为高度适宜，从而为马林伊区基洛萨克瓦姆佩波村的农民带来一系列社会经济和农业环境效益。
{"title":"Land suitability evaluation for rice and maize based cropping systems using FAO maximum limitation approach","authors":"Joachim Hjr Makoi","doi":"10.15406/freij.2020.04.00099","DOIUrl":"https://doi.org/10.15406/freij.2020.04.00099","url":null,"abstract":"Despite the growing interest in irrigated agriculture in Malinyi District in Morogoro Region, its practice in Kilosa kwa Mpepo traditional irrigation scheme remains low in production and productivity compared with medium to modern irrigated agriculture. Since construction of medium to modern irrigated agriculture is expensive, matching crop requirement with resources available through land suitability evaluation is necessary to improve production and productivity in the area. Such important study however,ha.s not been undertaken in Kilosa kwa Mpepo traditional irrigation scheme proposed for modernization. This study, evaluates the land suitability of Kilosa kwa Mpepo traditional irrigation scheme for rice (Oryza sativa L.) and maize (Zea mays L.) cropping systems using FAO maximum limitation method. After matching land qualities with land use requirements, results indicated that soil wetness, soil physical characteristics, and soil fertility status were the major limiting factors affecting land quality within the proposed irrigation scheme. Results also showed that of the total area surveyed (i.e. 1,117 Ha) 25% was rated as highly suitable (S1), 37% as moderately suitable (S2) and 37% as marginally suitable (S3) for irrigated rice based cropping systems. However, after controlling floods the highly suitable (S1) to marginally suitable (S3) land observed was to a large extent related to soil physical property, leading to inadequate capacity to retain nutrients. Similarly, results of land suitability for irrigated maize based cropping systems indicated that of the total study area, 37% was rated as highly suitable (S1) and 63% as moderately suitable (S2). The moderately suitable land in the surveyed area was related to soil physical property and poor soil fertility status (i.e. texture and low pH). Taken together, these data suggest that well-designed irrigation infrastructures along with flood protection band and drainage structures may control and or reduce the incidence of floods and waterlogging conditions in the study area. Long-term fertility management requires consideration of use of organic materials such as manure and compost. Such programs need to maximize use efficiency and minimize environmental losses. Implementation of the proposed approach to optimizing land management will reverse the suitability of land from marginally suitable to highly suitable land thus delivering a range of socio-economic and agro-environmental benefits to the farmers in Kilosa kwa Mpepo village in Malinyi District","PeriodicalId":176249,"journal":{"name":"Forestry Research and Engineering: International Journal","volume":" 12","pages":""},"PeriodicalIF":0.0,"publicationDate":"2020-03-18","publicationTypes":"Journal Article","fieldsOfStudy":null,"isOpenAccess":false,"openAccessPdf":"","citationCount":null,"resultStr":null,"platform":"Semanticscholar","paperid":"141222044","PeriodicalName":null,"FirstCategoryId":null,"ListUrlMain":null,"RegionNum":0,"RegionCategory":"","ArticlePicture":[],"TitleCN":null,"AbstractTextCN":null,"PMCID":"","EPubDate":null,"PubModel":null,"JCR":null,"JCRName":null,"Score":null,"Total":0}
Pub Date : 2018-11-16DOI: 10.15406/freij.2018.02.00064
S. Sk
Agroforestry is a land–use management system where trees or shrubs are grown around or among crops or in pasture lands. It combines agricultural and forestry technologies to create more diverse, productive, profitable, healthy, and sustainable land use systems. Agroforestry as a land use system is as old as agriculture. In a country like India with varied agro climatic zones, various combinations of trees with arable crops, fruits and animal husbandry exist.1 Growing field crops like pearl millet, legumes and oil seeds in a field predominant by Khejri (Prosopis cineraria) and Bordi (Zizyphus nummularia) are examples of traditional agroforestry of Rajasthan, Punjab, Haryana and Gujarat States. Growing tree species, such as Eucalyptus spp, Dalbergia sissoo, Azadirachta indica, Acacia nilotica, Grewia optiva, Morus alba and Ficus spp., on the borders of fields to meet local demands for timber, fodder and fuel is a common practice throughout the country.2
{"title":"Clonal plantations play a key role to increaseagroforestry production enriching farm communities: Indian experiences","authors":"S. Sk","doi":"10.15406/freij.2018.02.00064","DOIUrl":"https://doi.org/10.15406/freij.2018.02.00064","url":null,"abstract":"Agroforestry is a land–use management system where trees or shrubs are grown around or among crops or in pasture lands. It combines agricultural and forestry technologies to create more diverse, productive, profitable, healthy, and sustainable land use systems. Agroforestry as a land use system is as old as agriculture. In a country like India with varied agro climatic zones, various combinations of trees with arable crops, fruits and animal husbandry exist.1 Growing field crops like pearl millet, legumes and oil seeds in a field predominant by Khejri (Prosopis cineraria) and Bordi (Zizyphus nummularia) are examples of traditional agroforestry of Rajasthan, Punjab, Haryana and Gujarat States. Growing tree species, such as Eucalyptus spp, Dalbergia sissoo, Azadirachta indica, Acacia nilotica, Grewia optiva, Morus alba and Ficus spp., on the borders of fields to meet local demands for timber, fodder and fuel is a common practice throughout the country.2","PeriodicalId":176249,"journal":{"name":"Forestry Research and Engineering: International Journal","volume":"18 1","pages":"0"},"PeriodicalIF":0.0,"publicationDate":"2018-11-16","publicationTypes":"Journal Article","fieldsOfStudy":null,"isOpenAccess":false,"openAccessPdf":"","citationCount":null,"resultStr":null,"platform":"Semanticscholar","paperid":"122009393","PeriodicalName":null,"FirstCategoryId":null,"ListUrlMain":null,"RegionNum":0,"RegionCategory":"","ArticlePicture":[],"TitleCN":null,"AbstractTextCN":null,"PMCID":"","EPubDate":null,"PubModel":null,"JCR":null,"JCRName":null,"Score":null,"Total":0}
Pub Date : 2018-11-09DOI: 10.15406/freij.2018.02.00062
Yishak Yiferu, G. Taddese, Tesfaye Mebrate
Soil erosion is a great worldwide factor for land degradation that leads to loss of soil properties and reducing soil productivity leading to food insufficiency.1 In the Ethiopian highlands, an annual soil loss reaches 200–300 tons/ha/yr from farm land.2,3 Unfavorable soil physical conditions resulting from erosion can reduce infiltration, encourage crusting, loss of soil fertility, deterioration of soil particle aggregation, degrade soil structure and reduce the effectiveness of root zone thereby reducing soil productivity.4 Soil erosion has a great effect on the change of soil physical properties due to the removal of the top fertile and organic matter–rich soil and the deterioration of soil structure or aggregation.5 Several studies in Ethiopia have revealed that soil erosion has become an alarming problem and the major factor affecting the sustainability of agricultural production.6 Over the last three decades, several types of soil and water conservation (SWC) practices have been experienced on different parts of Ethiopia including Amhara Region and particularly Basonawerana district. On the other hand, the absence of soil conservation practice can lead to accelerating soil erosion and affect the components of physical soil conditions significantly.7 Soil and water conservation practices have the ability to overcome the problem of soil erosion followed by improvement in soil physical properties. Wise use of soil conservation practices that are the decisive tool to maintain the productive potential of the soil help to decreasing the exposure of soil to erosion. Conservation practices can address both the processes of soil erosion and possible solutions to conserve the soil in a sustainable way. The improvement is in soil organic matter content, soil structure and its aggregate stability, water holding capacity, soil bulk density, soil porosity, and its workability.8 Similarly, low soil porosity, gravimetric soil moisture content, clay and silt proportion was revealed in the cultivated land without soil bund as compared with non–conserved land and reversely highest soil bulk density and sand fraction.9 Soil erosion has a great negative effect on the change of soil physical properties including soil structure, soil texture, soil moisture content, and soil bulk density in a long period of time.
{"title":"Influence of soil erosion and conservation practices on soil physical properties in Ginaberet, Ethiopia","authors":"Yishak Yiferu, G. Taddese, Tesfaye Mebrate","doi":"10.15406/freij.2018.02.00062","DOIUrl":"https://doi.org/10.15406/freij.2018.02.00062","url":null,"abstract":"Soil erosion is a great worldwide factor for land degradation that leads to loss of soil properties and reducing soil productivity leading to food insufficiency.1 In the Ethiopian highlands, an annual soil loss reaches 200–300 tons/ha/yr from farm land.2,3 Unfavorable soil physical conditions resulting from erosion can reduce infiltration, encourage crusting, loss of soil fertility, deterioration of soil particle aggregation, degrade soil structure and reduce the effectiveness of root zone thereby reducing soil productivity.4 Soil erosion has a great effect on the change of soil physical properties due to the removal of the top fertile and organic matter–rich soil and the deterioration of soil structure or aggregation.5 Several studies in Ethiopia have revealed that soil erosion has become an alarming problem and the major factor affecting the sustainability of agricultural production.6 Over the last three decades, several types of soil and water conservation (SWC) practices have been experienced on different parts of Ethiopia including Amhara Region and particularly Basonawerana district. On the other hand, the absence of soil conservation practice can lead to accelerating soil erosion and affect the components of physical soil conditions significantly.7 Soil and water conservation practices have the ability to overcome the problem of soil erosion followed by improvement in soil physical properties. Wise use of soil conservation practices that are the decisive tool to maintain the productive potential of the soil help to decreasing the exposure of soil to erosion. Conservation practices can address both the processes of soil erosion and possible solutions to conserve the soil in a sustainable way. The improvement is in soil organic matter content, soil structure and its aggregate stability, water holding capacity, soil bulk density, soil porosity, and its workability.8 Similarly, low soil porosity, gravimetric soil moisture content, clay and silt proportion was revealed in the cultivated land without soil bund as compared with non–conserved land and reversely highest soil bulk density and sand fraction.9 Soil erosion has a great negative effect on the change of soil physical properties including soil structure, soil texture, soil moisture content, and soil bulk density in a long period of time.","PeriodicalId":176249,"journal":{"name":"Forestry Research and Engineering: International Journal","volume":"20 1","pages":"0"},"PeriodicalIF":0.0,"publicationDate":"2018-11-09","publicationTypes":"Journal Article","fieldsOfStudy":null,"isOpenAccess":false,"openAccessPdf":"","citationCount":null,"resultStr":null,"platform":"Semanticscholar","paperid":"126052348","PeriodicalName":null,"FirstCategoryId":null,"ListUrlMain":null,"RegionNum":0,"RegionCategory":"","ArticlePicture":[],"TitleCN":null,"AbstractTextCN":null,"PMCID":"","EPubDate":null,"PubModel":null,"JCR":null,"JCRName":null,"Score":null,"Total":0}
Pub Date : 2018-08-20DOI: 10.15406/FREIJ.2018.2.00055
Joshua Vilkas, Pik Hoi Lam, N. Jacobsen, Yuan Xue, Xianghao Zuo, Tae Jin Kim, M. Rafailovich
The characterization and investigation of different properties of tree leaves are the important consideration in various scientific fields. Knowing the mechanism by which leaves burn is also critical in considering when working with leaves on varying types of shrubbery. These properties are especially important when engineering new methods to mitigate wildfires, as the physical and chemical properties of the leaf are the main promoters of burning and wildfire spread.1–4
{"title":"Dynamics of water evaporation and flammability from the common “dogwood” (Cornus kousa) leaf","authors":"Joshua Vilkas, Pik Hoi Lam, N. Jacobsen, Yuan Xue, Xianghao Zuo, Tae Jin Kim, M. Rafailovich","doi":"10.15406/FREIJ.2018.2.00055","DOIUrl":"https://doi.org/10.15406/FREIJ.2018.2.00055","url":null,"abstract":"The characterization and investigation of different properties of tree leaves are the important consideration in various scientific fields. Knowing the mechanism by which leaves burn is also critical in considering when working with leaves on varying types of shrubbery. These properties are especially important when engineering new methods to mitigate wildfires, as the physical and chemical properties of the leaf are the main promoters of burning and wildfire spread.1–4","PeriodicalId":176249,"journal":{"name":"Forestry Research and Engineering: International Journal","volume":"7 1","pages":"0"},"PeriodicalIF":0.0,"publicationDate":"2018-08-20","publicationTypes":"Journal Article","fieldsOfStudy":null,"isOpenAccess":false,"openAccessPdf":"","citationCount":null,"resultStr":null,"platform":"Semanticscholar","paperid":"121722014","PeriodicalName":null,"FirstCategoryId":null,"ListUrlMain":null,"RegionNum":0,"RegionCategory":"","ArticlePicture":[],"TitleCN":null,"AbstractTextCN":null,"PMCID":"","EPubDate":null,"PubModel":null,"JCR":null,"JCRName":null,"Score":null,"Total":0}
Pub Date : 2018-08-09DOI: 10.15406/FREIJ.2017.02.00054
H. D. Lightfoot, O. Mamer
{"title":"Does a math problem in IPCC report climate change 2007: The physical science basis (AR4) compromise the science?","authors":"H. D. Lightfoot, O. Mamer","doi":"10.15406/FREIJ.2017.02.00054","DOIUrl":"https://doi.org/10.15406/FREIJ.2017.02.00054","url":null,"abstract":"","PeriodicalId":176249,"journal":{"name":"Forestry Research and Engineering: International Journal","volume":"19 1","pages":"0"},"PeriodicalIF":0.0,"publicationDate":"2018-08-09","publicationTypes":"Journal Article","fieldsOfStudy":null,"isOpenAccess":false,"openAccessPdf":"","citationCount":null,"resultStr":null,"platform":"Semanticscholar","paperid":"124980020","PeriodicalName":null,"FirstCategoryId":null,"ListUrlMain":null,"RegionNum":0,"RegionCategory":"","ArticlePicture":[],"TitleCN":null,"AbstractTextCN":null,"PMCID":"","EPubDate":null,"PubModel":null,"JCR":null,"JCRName":null,"Score":null,"Total":0}
Pub Date : 2018-08-09DOI: 10.15406/freij.2018.02.00053
N. Thanh, Dang Thanh Le, L. Hens
industrial cities (pollution, urban degradation, consumptive resource use) into opportunities. They focus on a sound environment in which accessible green is a main component, next to carbon neutrality, sustainable mobility and outstanding environmental management (including among others zero waste, clear air and high quality piped drinking water) and services.2 Green cities pay a lot of attention to health and well–being. This concern dovetails in the historical link with the healthy city concept. This latter was launched by the World Health Organization in the 1970ies and combined aspects of physical with mental health.
{"title":"Forests for green cities","authors":"N. Thanh, Dang Thanh Le, L. Hens","doi":"10.15406/freij.2018.02.00053","DOIUrl":"https://doi.org/10.15406/freij.2018.02.00053","url":null,"abstract":"industrial cities (pollution, urban degradation, consumptive resource use) into opportunities. They focus on a sound environment in which accessible green is a main component, next to carbon neutrality, sustainable mobility and outstanding environmental management (including among others zero waste, clear air and high quality piped drinking water) and services.2 Green cities pay a lot of attention to health and well–being. This concern dovetails in the historical link with the healthy city concept. This latter was launched by the World Health Organization in the 1970ies and combined aspects of physical with mental health.","PeriodicalId":176249,"journal":{"name":"Forestry Research and Engineering: International Journal","volume":"22 1","pages":"0"},"PeriodicalIF":0.0,"publicationDate":"2018-08-09","publicationTypes":"Journal Article","fieldsOfStudy":null,"isOpenAccess":false,"openAccessPdf":"","citationCount":null,"resultStr":null,"platform":"Semanticscholar","paperid":"125678016","PeriodicalName":null,"FirstCategoryId":null,"ListUrlMain":null,"RegionNum":0,"RegionCategory":"","ArticlePicture":[],"TitleCN":null,"AbstractTextCN":null,"PMCID":"","EPubDate":null,"PubModel":null,"JCR":null,"JCRName":null,"Score":null,"Total":0}
Pub Date : 2018-08-09DOI: 10.15406/freij.2017.02.00052
Z. Cano-Santana
{"title":"A sample of the current variety of approaches in forestry sciences","authors":"Z. Cano-Santana","doi":"10.15406/freij.2017.02.00052","DOIUrl":"https://doi.org/10.15406/freij.2017.02.00052","url":null,"abstract":"","PeriodicalId":176249,"journal":{"name":"Forestry Research and Engineering: International Journal","volume":"1 1","pages":"0"},"PeriodicalIF":0.0,"publicationDate":"2018-08-09","publicationTypes":"Journal Article","fieldsOfStudy":null,"isOpenAccess":false,"openAccessPdf":"","citationCount":null,"resultStr":null,"platform":"Semanticscholar","paperid":"129440632","PeriodicalName":null,"FirstCategoryId":null,"ListUrlMain":null,"RegionNum":0,"RegionCategory":"","ArticlePicture":[],"TitleCN":null,"AbstractTextCN":null,"PMCID":"","EPubDate":null,"PubModel":null,"JCR":null,"JCRName":null,"Score":null,"Total":0}
Pub Date : 2018-07-27DOI: 10.15406/FREIJ.2018.02.00051
C. Broderick, N. Appleton
The tropical rain forest that is the climax vegetation of Liberia is in need of modern and preferential scientific management practices. Contemporary evaluations say that Liberia’s forest is dwindling, but Liberia still has one of the largest remnants of pristine forests in the world. The Amazon region in Brazil, South America, and the Congo Basin in Central Africa, can boast of larger forests, but the Liberian forest is large and a real economic resource for both agriculture and forestry. Response to the demand for timber, non–timber forest products, mining, and agricultural products is deforestation and land clearing, both of which are taking a negative toll on forest and agricultural lands. Land clearing, including the complete removal of large and otherwise robust trees, is typically imperative. A major focus of small farmers consequently involves tree felling, land clearing, and debris removal by burning. Moreover, improper extraction of forest trees, with other misuse of agriculture and forestry lands, is having very negative effects, including increasing erosion, poor drainage, low soil fertility, and the resultant poor land productivity.1
{"title":"A case study for Liberian agroforestry: science and the implementation of a co–management prospectus for agriculture and forestry","authors":"C. Broderick, N. Appleton","doi":"10.15406/FREIJ.2018.02.00051","DOIUrl":"https://doi.org/10.15406/FREIJ.2018.02.00051","url":null,"abstract":"The tropical rain forest that is the climax vegetation of Liberia is in need of modern and preferential scientific management practices. Contemporary evaluations say that Liberia’s forest is dwindling, but Liberia still has one of the largest remnants of pristine forests in the world. The Amazon region in Brazil, South America, and the Congo Basin in Central Africa, can boast of larger forests, but the Liberian forest is large and a real economic resource for both agriculture and forestry. Response to the demand for timber, non–timber forest products, mining, and agricultural products is deforestation and land clearing, both of which are taking a negative toll on forest and agricultural lands. Land clearing, including the complete removal of large and otherwise robust trees, is typically imperative. A major focus of small farmers consequently involves tree felling, land clearing, and debris removal by burning. Moreover, improper extraction of forest trees, with other misuse of agriculture and forestry lands, is having very negative effects, including increasing erosion, poor drainage, low soil fertility, and the resultant poor land productivity.1","PeriodicalId":176249,"journal":{"name":"Forestry Research and Engineering: International Journal","volume":"24 1","pages":"0"},"PeriodicalIF":0.0,"publicationDate":"2018-07-27","publicationTypes":"Journal Article","fieldsOfStudy":null,"isOpenAccess":false,"openAccessPdf":"","citationCount":null,"resultStr":null,"platform":"Semanticscholar","paperid":"133123180","PeriodicalName":null,"FirstCategoryId":null,"ListUrlMain":null,"RegionNum":0,"RegionCategory":"","ArticlePicture":[],"TitleCN":null,"AbstractTextCN":null,"PMCID":"","EPubDate":null,"PubModel":null,"JCR":null,"JCRName":null,"Score":null,"Total":0}
Pub Date : 2018-07-24DOI: 10.15406/freij.2018.02.00050
ramohanan Kt, N. Narayanan
Individual organisms can alter their development, physiology and life history depending on environmental conditions. These environmental responses are both trait and resource specific, and represent evolved characteristics that vary among genotypes, populations and species.1 The capacity of genotype to express different phenotypes in different environments, phenotypic plasticity and for any crop improvement it depends on magnitude of genetic variability present in base population.2 Environmental effects influence the total observable variations of quantitative traits. Therefore, partitioning of overall variance due to genetic and non–genetic causes becomes necessary for effective breeding programme. The genotypic coefficient of variation estimates the heritable variability, whereas phenotypic component measures the role of environment on the genotype. High phenotypic coefficient of variation and low genotypic coefficient of variation for a character indicated high influence of environment in its expression. The phenomenon of transmission of characters from parents to offspring is usually measured in terms of heritability. Therefore the estimates of heritability and genetic advance would help to formulate a sound breeding programme. The heritability, genetic advance and variability of the medicinally important plant Scoparia dulcis L. of the family Plantaginaceae was studied presently.
{"title":"Study of heritability, genetic advance and variability in scoparia dulcis L.","authors":"ramohanan Kt, N. Narayanan","doi":"10.15406/freij.2018.02.00050","DOIUrl":"https://doi.org/10.15406/freij.2018.02.00050","url":null,"abstract":"Individual organisms can alter their development, physiology and life history depending on environmental conditions. These environmental responses are both trait and resource specific, and represent evolved characteristics that vary among genotypes, populations and species.1 The capacity of genotype to express different phenotypes in different environments, phenotypic plasticity and for any crop improvement it depends on magnitude of genetic variability present in base population.2 Environmental effects influence the total observable variations of quantitative traits. Therefore, partitioning of overall variance due to genetic and non–genetic causes becomes necessary for effective breeding programme. The genotypic coefficient of variation estimates the heritable variability, whereas phenotypic component measures the role of environment on the genotype. High phenotypic coefficient of variation and low genotypic coefficient of variation for a character indicated high influence of environment in its expression. The phenomenon of transmission of characters from parents to offspring is usually measured in terms of heritability. Therefore the estimates of heritability and genetic advance would help to formulate a sound breeding programme. The heritability, genetic advance and variability of the medicinally important plant Scoparia dulcis L. of the family Plantaginaceae was studied presently.","PeriodicalId":176249,"journal":{"name":"Forestry Research and Engineering: International Journal","volume":"62 1","pages":"0"},"PeriodicalIF":0.0,"publicationDate":"2018-07-24","publicationTypes":"Journal Article","fieldsOfStudy":null,"isOpenAccess":false,"openAccessPdf":"","citationCount":null,"resultStr":null,"platform":"Semanticscholar","paperid":"114811474","PeriodicalName":null,"FirstCategoryId":null,"ListUrlMain":null,"RegionNum":0,"RegionCategory":"","ArticlePicture":[],"TitleCN":null,"AbstractTextCN":null,"PMCID":"","EPubDate":null,"PubModel":null,"JCR":null,"JCRName":null,"Score":null,"Total":0}
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