Effects of lime and phosphorus fertilizer on maize performance in acid soils of western Kenya

Abstract: 
Western Kenya continues to experience food insecurity due to increasing soil acidity and consequent phosphorus deficiencies with 0.9 million hectares of land having pH < 5.5. Liming is one of the interventions recommended to ameliorate such soils. Field trials were conducted in Siaya and North Kakamega districts to evaluate and compare direct and residual effects of agricultural lime and Mavuno fertilizers on soil properties and maize performance. Lime was obtained from two Kenyan sources, Homa Hills and Athi River mining companies and Tanzania (Minjingu Phosphate Rock). Preliminary results show that the highest plant height was obtained from Mavuno fertilizer followed closely by agricultural lime from Homa Hills. There is need to determine the properties of the lime from the different sources in order to recommend that with highest potential of improving maize yield in the region.
Le Kenya occidental continue à vivre l’insécurité alimentaire due à l’acidité croissante du sol et aux insuffisances conséquentes de phosphore avec 0.9 million d’hectares de terre ayant un pH < 5.5. L’application de la chaux est l’une des interventions recommandées pour améliorer de tels sols. Des essais pratiques ont été conduits dans les districts de Siaya et du nord de Kakamega pour évaluer et comparer des effets directs et résiduels sur les propriétés du sol et la performance du maïs due à l’usage de l’engrais calcique et des engrais de Mavuno. La chaux a été obtenue à partir de deux sources Kenyanes à savoir les collines de Homa et les compagnies d’exploitation minières du fleuve d’Athi et aussi à partir de la Tanzanie (phosphate naturel de Minjingu). Les résultats préliminaires prouvent que la taille la plus élevée des plantes a été obtenue à partir de l’engrais de Mavuno suivi de près par l’engrais calcique des collines de Homa. Il y a le besoin de déterminer les propriétés de la chaux des différentes sources afin de recommander son usage pour un potentiel le plus élevé d’amélioration du rendement de maïs dans la région.
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
Publisher: 
ISSN: 
E_ISSN: 
Edition: 
Extent: 
703-707
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"