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Titlebook: Alleviating Soil Fertility Constraints to Increased Crop Production in West Africa; A. Uzo Mokwunye Book 1991 Springer Science+Business Me

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发表于 2025-3-21 17:31:15 | 显示全部楼层 |阅读模式
期刊全称Alleviating Soil Fertility Constraints to Increased Crop Production in West Africa
影响因子2023A. Uzo Mokwunye
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学科分类Developments in Plant and Soil Sciences
图书封面Titlebook: Alleviating Soil Fertility Constraints to Increased Crop Production in West Africa; A. Uzo Mokwunye Book 1991 Springer Science+Business Me
影响因子Tropical Africa escaped from the glaciers that covered the temperate parts of the world during the Ice Age. The legacy is that most of the parent materials of the soils of tropical Africa are old, highly weathered and devoid of bases and phosphate-bearing minerals. Traditional farming systems which were relatively stable and sustainable relied on long fallow periods after one to two years of cropping to maintain the productive capacity of the soils. In recent times and especially in densely populated areas, a sizeable class of ‘landless‘ farmers have begun to cultivate marginal lands or to invade the ‘forest reserves‘ thereby exacerbating the problems of land and environ­ mental degradation. of soil fertility that will facilitate the production of adequate quantities of the principle Maintaining a level staples has become a major challenge to agricultural scientists in tropical Africa. To increase the nutrient­ supplying power of soils requires the inputs of fertilizers. These can be organic or inorganic. The efficiency with which these externally supplied inputs can increase agricultural production and reduce soil and environmental deterioration is dependent on the ability of scie
Pindex Book 1991
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978-94-010-5421-8Springer Science+Business Media Dordrecht 1991
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Awning
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BAIL
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pessimism
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Electrical Circuits and Simulation Results,such as N rate, mode of N fertilizer application and choice of N sources for different agroecological zones of West Africa are discussed in relation to crop yield response. The interactive effects of cropping density and rainfall on N efficiency and yield are examined with particular emphasis on pro
外科医生
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Electrical Circuits and Simulation Results,ials currently available in the region will lead to increased incidence of sulfur (S) deficiency. In order to determine the S fertilizer requirements of major cereal crops, and compare the fate and efficiency of alternative S sources, experiments were conducted at six sites in semiarid and subhumid
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M. Jeroen Fonderie,Johan H. Huijsinge systems such as bush fallow rotations, grass fallow systems (which are in many cases combined with trees) and planted fallow systems have proved to be very effective and can be modified in the context of today’s needs and circumstances to reduce nutrient losses, prevent nutrient imbalance, restitu
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M. Jeroen Fonderie,Johan H. Huijsingng efficient use of fertilizers. Although several constraints limit the usefulness of fertilizers, progress has been made through careful experimentation in identifying and removing these constraints. In West Africa, sustainable agriculture is impossible in the absence of fertilizers because of the
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