5 research outputs found
Characterization and agronomic potential of Tilemsi (Mali) rock phosphate
No full textDue to the character of the original source materials and the nature of batch digitization, quality control issues may be present in this document. Please report any quality issues you encounter to [email protected], referencing the URI of the item.Includes bibliographical references.Not availabl
SUBSIDIZED FERTILIZER IN THE SAHEL: THAT IS THE QUESTION
No full textNutrient depletion concerns researchers and policy makers in the Sahel. A village-level programming model determines the size of fertilizer subsidy necessary to encourage farmers to apply the recommended dosage to their millet fields. Results indicate that subsidies would be extremely costly and less than half the expenditures accrue to the farm-household.Agricultural and Food Policy, Land Economics/Use,
SUBSIDIZED FERTILIZER IN THE SAHEL: THAT IS THE QUESTION
No full textNutrient depletion concerns researchers and policy makers in the Sahel. A village-level programming model determines the size of fertilizer subsidy necessary to encourage farmers to apply the recommended dosage to their millet fields. Results indicate that subsidies would be extremely costly and less than half the expenditures accrue to the farm-household
Alley Cropped Gliricidia sepium (Jacq.) Kunth ex. Walp. Enhance Soil Fertility and Yields of Cotton, Maize and Sorghum in Mali
No full textMineral fertilizers are effective in boosting crop yields in most parts of the world. Under tropical conditions and especially in rain-fed arid ecosystems they are not effective, because the limitations of system productivity are stronger at the level of the climatic situation and soil quality. The positive effect of Glirici-dia sepium (G. sepium) for: erosion control, shade, hydraulic lift, N-fixation, resource of fodder and soil input convinced the participating farmers to provide part of their land for this study. G. sepium was tested in association with cotton, maize and sorghum in order to develop best practices at two research stations and on fields of 30 farmers in the Sudanese and Sudano-Guinean zones of Mali. In addition to the introduction of G. sepium, the effects of organic and mineral ferti-lizers we tested at recommended and half rate. On-station experiments design was a split-plot with four replicates. The pH, soil organic carbon and nitrogen in soil samples were analyzed from 0-20 cm depth taken in 2016 at the beginning of the experiment and in 2018. The average yields of cotton, maize and sorghum associated with G. sepium were 812, 1,457 and 1,377 kg ha-1 respectively, whe-reas they were significantly lower without G. sepium reaching only 623, 1,014, and 807 kg ha-1 respectively. In the third year after planting G. sepium, organic carbon contents and total soil nitrogen increased by 5% in soils between the al-leys. Association of G. sepium with cotton, maize, and sorghum showed the im-provement of crop yields and soil nitrogen content in addition to other advantag-es not considered for testing here. This finding may serve to improve small-scale farmer’s livelihoods status through the improvement of soil fertility in Mali and the whole Sahel region
Evaluation de la fertilité des sols et les rendements de cotonnier, maïs et sorgho à >Gliricidia sepium (Jacq.) Kunth ex. Walp
No full textDe nos jours, la carence en fertilité des sols est un problème très répandu dans la plupart des pays subsahariens. G. sepium a été testé en association avec le cotonnier, le maïs et le sorgho afin de développer les meilleures pratiques dans deux stations de recherche et en milieu paysan dans les zones soudaniennes et soudano-guinéenne du Mali. L'objectif de cette étude était de développer, avec les producteurs participants, une technologie agro-forestière basée sur le Gliricidia sepium dans le système de culture en couloir. Le dispositif expérimental utilisé a été le Split plot à quatre répétitions. Le pH, le carbone organique du sol et l'azote ont été analysé dans des échantillons de sol de 0 à 20 cm de profondeur prélevés en 2016 au début de l'expérience et en 2018. Les rendements grains moyens de coton, de maïs et de sorgho associés au G. sepium étaient respectivement de 812, 1457 et 1377 kg.ha-1, alors qu'ils étaient significativement plus faibles sans G. sepium, avec 623, 1014 et 807 kg.ha-1 respectivement. Pendant la troisième année suivant la plantation de G. sepium, la teneur en carbone organique et en azote total du sol a augmenté de 5% dans les sols situés entre les allées. Le G. sepium en association avec les cultures a le potentiel d'améliorer leurs rendements et le sol.Mots clés : Carbone organique, azote, rendements, zones soudanienne et soudano-guinéenne, Mali
English Title: Evaluation of Gliricidia sepium (Jacq.) Kunth ex. Walp effect on soil fertility, yields of cotton, maize and sorghum
Nowdays, soil fertility deficiency is a widespread issue in most Sub-Saharian countries specially where the application of less input is the common agricultural practices. Thus the legume plant, G. sepium was established with cotton, maize and sorghum to develop best practices for increasing crop yield and soil fertility at two research stations and farming environment in the Sudanian and Sudano-Guinean zones of Mali. The objective of this study was to develop an agroforestry technology with farmers based on Gliricidia sepium in alley cropping system. The experimental design was Split plot with four replications. Soil pH, soil organic carbon and nitrogen were analyzed from 0-20 cm deep soil samples taken in 2016 at the beginning of the experiment and in 2018. Mean grain yields of cotton, maize and sorghum associated with G. sepium were 812, 1457 and 1377 kg.ha-1, respectively, while they were significantly lower without G. sepium with 623, 1014 and 807 kg.ha-1 as respectively cotton, maize and sorghum yield. In the third year after planting G. sepium, the soil organic carbon and total nitrogen content increased by 5% between the alleys. G. sepium in association with crops has the potential to improve crop yields and soil fertility.Keywords: Gliricidia sepium, organic carbon, nitrogen, yields, Mali
