Год выпуска: 2013 Автор: Peter Opala Издательство: LAP Lambert Academic Publishing Страниц: 244 ISBN: 9783659465536
Описание
Lime and phosphate fertilizer are used to ameliorate P deficiency and Al toxicity in developed countries but their high cost precludes their use on many farms in Africa. Other cost-effective strategies therefore need to be explored. This book reports results of a study in Kenya where the effect of two organic materials (OMs); farmyard manure (FYM) and Tithonia diversifolia, when applied alone or in combination inorganic P sources, on soil chemical properties and maize yield was investigated. Overcoming P deficiency without reduction of exchangeable Al did not increase maize yield. Similarly, reduction of exchangeable Al without adequate application of P failed to increase the yield. Tithonia when applied alone, or in combination with inorganic P sources, was more effective in increasing maize yields than other treatments at similar P application rates because of its stronger ability to reduce exchangeable Al. Although FYM was more effective than tithonia in increasing the available...
