The effect of farmyard manure on the continued and discontinued use of inorganic fertilizer in Ethiopia: An ordered probit analysis

In this paper, we analyze whether the continued and discontinued use of inorganic fertilizer is related to the use/non-use of farmyard manure (a sustainable land management practice) among farm households in Ethiopia. Random effects generalized order Probit and IV-ordered Probit regression results based on a panel plot level data suggest that the discontinued use of the inorganic fertilizer is related to the non-use of farmyard manure. Further, we find that black/brown soil type, flatter slope, shorter extension centers, and access to water are negatively correlated with discontinued use of the green revolution agricultural technology. Our results strengthen previous findings of complementarity between green revolution technologies and sustainable land management practices by showing that the latter can reduce the likelihood of discontinued use of green revolution inputs.