Profitability of Fertilizer Use in Sub-Saharan Africa: Evidence from Malawi

Francis Addeah Darko, Jacob Ricker-Gilbert and Talip Kilic

No 10859, Policy Research Working Paper Series from The World Bank

Abstract: This paper estimates the profitability of inorganic fertilizer use in maize production in Malawi. It employs a two-wave, nationally representative panel of data on smallholder households and plots to estimate household fixed effects, plot fixed effects, and multilevel regressions. The results suggest that inorganic fertilizer use is generally unprofitable at prevailing market prices when, assuming that farmers incur positive transaction costs in the use of fertilizer. The low fertilizer profitability is driven by low nitrogen use efficiency, the kilograms of maize produced per kilogram of nitrogen, which is estimated to range from 9.2 to 12.1. For fertilizer use to be profitable, the nitrogen use efficiency would have to increase by at least 137 percent (from 11.89) if maize output is valued at the farmgate price and by 50 percent (from 11.89) if maize is valued at the lean season market price. For farmers who receive the fertilizer subsidy, it improves the profitability of fertilizer use by increasing the maize-nitrogen price ratio at all rates of subsidy (0 to 100 percent). However, unless farmers can store their produce and sell during the lean season when the output price is relatively higher, they would be better off by at least MKW 66.16 (US$0.18) per kilogram of subsidized nitrogen with the cash equivalent of the subsidy than with subsidized fertilizer. The analysis also finds that, compared to the current rate of nitrogen application, the government recommended rate of application is between 116 and 119 percent more profitable on smallholder fields.

Date: 2024-07-24
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