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Kaizzi, K.C., Mohammed, B.M. and Maman, N. (2017) Fertilizer Use Optimization: Principles and Approach. In: Wortmann, C.S. and Keith, S., Eds., Fertilizer Use Optimization in Sub-Saharan Africa, CABI, Nairobi, 9-17.

has been cited by the following article:

• TITLE: Optimizing Nutrient Use Efficiency and Returns from Soybean Production under Smallholders in Three Agro-Ecologies of Malawi

  AUTHORS: Moses Munthali, Patson Nalivata, Wilkson Makumba, Emmanuel Mbewe, Hastings Manase, George Oduor, Martin Macharia, Kaizzi Kayuki

  KEYWORDS: Soybean, Net Returns, Economically Optimum Rates, Agronomic Use Efficiency of Phosphorous and Potassium, Nutrient Combination, Value Cost Ratio

  JOURNAL NAME: Agricultural Sciences, Vol.8 No.8, August 18, 2017

  ABSTRACT: Field trials were conducted to determine the economically optimum fertilizer rates for soybean production and for optimizing net profits in Dedza, Lilongwe and Salima Districts of Malawi. The effects of PK fertilizer rates on rain use efficiency (RUE), harvest index, agronomic use efficiency of phosphorous (AEP) and potassium (AEK), and value cost ratio (VCR) were evaluated. The applied diagnostic PK fertilizer rates significantly improved soybean grain yields, harvest index, rainwater use efficiency, AEP, AEK and returns to fertilizer use expressed as value cost ratio (VCR). However, the results differed significantly (P