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Binam J.N.,World Agroforestry Center | Place F.,International Food Policy Research Institute | Kalinganire A.,World Agroforestry Center | Hamade S.,Institute Of Lenvironnement Et Of Recherches Agricoles Inera | And 9 more authors.
Environmental Economics and Policy Studies | Year: 2015

This paper used a multivalued treatment framework to assess the effects of farmer managed natural regeneration (FMNR) on selected outcomes among 1080 rural household farmers in the Sahelian and Sudano-Sahelian ecozone of West Africa Sahel. The results indicate that keeping, protecting and managing trees in the farmland have significant effects on the livelihoods of the rural poor in the Sahelian countries. If 1000 households in a community decide to practice the FMNR continuously, it results in an increase in the gross income by US$ 72,000 per year. Noticeable changes are also observed on the value of tree products, with an observed significant increase in the value of the products harvested from tree by about 34–38 % among those actively practicing FMNR as compared to their counterparts. The results also lend support to the household resilience hypothesis of FMNR in that it leads to a significant increase of the dietary diversity by about 12–14 %. However, it also appeared that several factors impeded the regeneration of trees on farms. To foster the widespread dissemination and enhance the capacity of farmers to increase, diversify and sustain tree-based production systems, an enabling institutional, technical and policy environment needs to be promoted. © 2015 Society for Environmental Economics and Policy Studies and Springer Japan

Bagayoko M.,Institute DEconomie Rural IER | Maman N.,Institute National Of Recherches Agronomique Du Niger Inran | Pale S.,Institute Of Lenvironnement Et Of Recherches Agricoles Inera | Sirifi S.,Institute National Of Recherches Agronomique Du Niger Inran | And 3 more authors.
African Journal of Agricultural Research | Year: 2011

The objective of this study was to determine the grain and stover yield response of pearl millet to microdose fertilizer application alone, and microdose combined with N and P fertilizer application rates across years and locations in West Africa. Microdose fertilizer application increased pearl millet grain yields by 240 to 300 kg ha-1 on sandy soils across a broad range of climatic and soil conditions in West Africa, while increasing pearl millet grain yields by 400 kg ha-1 on silty clay soils in Mali. Stover yield increases of pearl millet were 250 to 400 kg ha-1 on sandy soils and 500 to 2500 kg ha-1 on silty clay soils in Mali. Application of 20 kg ha-1 P2O5 and 30 kg ha-1 N in addition to microdose commonly increased grain yields by 140 to 180 kg ha-1 and stover yields by 600 to 1500 kg ha-1 over that of microdose application only. These results indicate that micodose in combination with 20 kg ha-1 P2O5 and 30 kg ha-1 N fertilizer application is required to optimize both grain and stover yield of pearl millet in West Africa to meet food, fuel and soil improvement needs of farmers. ©2011 Academic Journals.

Kountche B.A.,University Abdou Moumouni | Kountche B.A.,International Crops Research Institute for the Semi Arid Tropics ICRISAT | Kountche B.A.,IRD Montpellier | Kountche B.A.,Montpellier SupAgro | And 11 more authors.
Field Crops Research | Year: 2013

Striga hermonthica (Del.) Benth. is a persistent threat to pearl millet [Cenchrus americanus (L.) Morrone, comb. nov.] production, especially in West Africa. This study aimed at evaluating the response of a diversified pearl millet genepool to five cycles of recurrent selection targeting Striga resistance and panicle yield, and to a lesser extent downy mildew [Sclerospora graminicola (Sacc.) J. Schroet.] resistance. Two-hundred full-sib families (FS) representing the C5 selection cycle were evaluated together with the genepool parental landraces, experimental varieties derived from previous cycles and local checks in Striga-infested fields at Sadoré (Niger) and Cinzana (Mali). Substantial and mostly significant selection progress could be documented. The accumulated percentage gain from selection amounted to 51%/1% lower Striga infestation (measured by area under Striga number progress curve, ASNPC), 46%/62% lower downy mildew incidence, and 49%/31% higher panicle yield of the C5-FS compared to the mean of the genepool parents at Sadoré/Cinzana, respectively. Experimental varieties selected from previous cycles also revealed lower ASNPC and mostly higher yield compared to genepool parents at their selection sites. Significant genetic variation among the C5-FS and operative heritabilities of 76% (Cinzana), 84% (Sadoré) and 34% (combined across locations) for ASNPC will enable continued selection gain for Striga resistance. High genotype×environment interaction variances for all target traits suggest that different experimental varieties need to be extracted from the genepool for different sites. The genepool-derived varieties will be further validated on-farm and are expected to contribute to integrated Striga control in pearl millet in West Africa. © 2013 The Authors.

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