Strengthening researcher-extension-farmer participation in soil fertility restoration for sustainable crop production in western Kenya

Abstract: 
Food insecurity in sub-Saharan Africa (SSA) results mainly from common and prolonged droughts, fertility depleted soils, poor economies and insignificant researcher-extension-farmer contacts to demonstrate technologies. The soils are predominantly deficient in N and P nutrients, soil organic matter and are generally acidic. In these soils nutrient additions have raised maize (staple) yields in western Kenya from 0.5 to 3-5 t/ ha/season, when 75 kg N, 26 kg P and 2 t/ha agricultural lime are applied. Farmers always indicate the unaffordable costs of these materials. To mitigate these problems, cooperation among international institutions has been launched in the region to diversify fertilizer and lime applications, to reach 50,000 farmers by 2012. Use of low cost materials such as phosphate rocks, lime and manures is emphasized. This paper highlights some of these efforts.
L’insécurité alimentaire en Afrique sub-saharienne (ASS) résulte principalement des sécheresses prolongées et fréquentes, des sols dépourvus de fertilité, des économies pauvres et du contact chercheur-developpement-fermier insignifiant pour démontrer des technologies. Les sols sont principalement pauvres en nutriments N et P, en matière organique et sont généralement acides. La supplémentation de ces sols en nutriments a relevé les rendements de maïs (qui est un aliment de base) de 0.5 à 3-5 t/ha/saison au Kenya occidental quand 75 kg N, 26 kgP et 2 t/ha d’engrais calcique sont utilisés. Les fermiers affirment d’habitude que ces matériaux ont des coûts exorbitants. Pour atténuer ces problèmes, la coopération entre les institutions internationales a été lancée dans la région pour diversifier les usages d’engrais et de chaux, pour atteindre 50.000 fermiers d’ici 2012. L’utilisation des produits à prix réduit tels que les phosphates naturels, la chaux et les engrais est soulignée. Cet article met en évidence certains de ces efforts.
Language: 
Date of publication: 
2010
Country: 
Region Focus: 
East Africa
University/affiliation: 
Collection: 
RUFORUM Conferences and Workshops
Licence conditions: 
Open Access
Access restriction: 
Form: 
Printed resource
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ISSN: 
E_ISSN: 
Edition: 
Extent: 
671-677
Notes: 

About the RUFORUM 2010 Biennal Conference
"The 2010 RUFORUM Biennial Conference was the second in the series. The main objective of the Biennial conferences is to provide a platform for agricultural research for development stakeholders in Africa and beyond to actively exchange findings and experiences, while at the same time learning lessons towards improving performance of the agricultural sector and ultimately people’s livelihoods. The biennial conference is RUFORUM’s most comprehensive meeting for the diversity of stakeholders in agriculture. It is especially dedicated to graduate students and their supervisors, grantees in RUFORUM member universities and alumni. It is a platform for peer review, quality control, mentorship, networking and shared learning. This record contains an extended abstract accepted under the theme of Natural Resource Management"