Show simple item record

Using innovation platforms to scale out soil acidity-ameliorating technologies in Dedza district in central Malawi

Author: Kabambe, V.H.
Author: Chilimba, A.D.C.
Author: Ngwira, A.
Author: Mbawe, M.
Author: Kambauwa, G.
Author: Mapfumo, P.
Year: 2012
ISSN: 1684-5315
URI: http://hdl.handle.net/10883/1569
Abstract: Soil acidity is a serious constraint in crop production in some parts of Malawi, particularly in high rainfall and high altitude areas. A learning platform was established in Bembeke Extension Planning Area (EPA) (14¡ã 21¡ä E and 34¡ã 21¡ä S, 1650 masl, normal annual rainfall of 1300 to 1500 mm) in Dedza District to scale out lime applications as amendments to low pH soils. In 2006/2007 and 2007/2008 seasons, 36 and 150 two-plot trials, respectively were established to serve as learning centers for the comparison of application of 2 t/ha of dolomitic lime to no application in maize (Zea mays L.) crop fertilized at 69:21:0+4S. In 2007/2008 season, a similar study compared application of compost manures. Application of lime increased (P < 0.05) maize yields from 3.58 to 4.68 t/ha in 2006/2007 and 3.35 to 4.2 t/ha in 2007/2008. In 2007/2008, the residual effects of lime increased (P < 0.05) yields of maize and beans (Phaseolus vulgaris). An innovation platform comprising of farmers, government and NGO extension and researchers organized exchange tours and end of season review meetings. The number of farmers hosting the learning centers grew from 36 to 150 due to the IP interactions. At the end of the project support in 2008, the participating farmers were willing to invest in the technology and raised funds for purchase of lime, assisted by government extension. The IP was unable to effectively engage any agri-input dealer to follow up on the demand on lime expressed by farmers. Application of compost manure increased maize yields from 4.25 to 5.84 t/ha, compared to 2.31 t/ha as practiced by farmers.
Format: PDF
Language: English
Publisher: Academic Journals
Copyright: CIMMYT manages Intellectual Assets as International Public Goods. The user is free to download, print, store and share this work. In case you want to translate or create any other derivative work and share or distribute such translation/derivative work, please contact CIMMYT-Knowledge-Center@cgiar.org indicating the work you want to use and the kind of use you intend; CIMMYT will contact you with the suitable license for that purpose.
Type: Article
Country focus: Malawi
Region: Southern Africa
Pages: 561-569
Issue: 3
Volume: 11
DOI: 10.5897/AJB10.2227
Publisher URI: https://academicjournals.org/journal/AJB/article-abstract/114918C29895
Agrovoc: DOLOMITIC LIME (AMENDMENT)
Agrovoc: INNOVATION PLATFORMS
Agrovoc: COMPOSTING
Agrovoc: ACID SOILS
Journal: African Journal of Biotechnology


Files in this item

Thumbnail

This item appears in the following Collection(s)

  • Sustainable Intensification
    Sustainable intensification agriculture including topics on cropping systems, agronomy, soil, mechanization, precision agriculture, etc.

Show simple item record