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Nutrient sources and their application in cassava cultivation

Code: 9781838797270
Reinhardt Howeler, CIAT Emeritus - formerly CIAT, Thailand

Chapter synopsis: This chapter discusses various sources of nutrients to be applied to prevent soil nutrient depletion, as well as the optimum rates, times and methods of their application. It also describes how computer models can predict site-specific nutrient requirements and balanced fertilizer rates to maximize nutrient use efficiency, increase farmers’ profits and prevent waste and potential pollution of the environment. It ends by considering the variation among cassava genetic resources in nutrient use efficiency in order to breed new varieties with greater tolerance to low soil fertility.

DOI: 10.19103/AS.2016.0014.35
Table of contents 1 Introduction 2 Organic and inorganic nutrient sources 3 When and where to apply chemical fertilizers, manures and soil amendments 4 Determination of fertilizer rates and nitrogen, phosphorus and potassium (NPK) balance 5 Site-specific nutrient management 6 Fertilizer requirements for balanced nutrition 7 Genetic variation in nutrient use effi ciency (NUE) and tolerance to low soil fertility 8 Conclusions 9 References

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