Inorganic fertilizer use and its association with rice yield gaps in sub-Saharan Africa.

ABSTRACT: Where and which countries should receive higher priority for improving inorganic fertilizer use in rice fields in sub-Saharan Africa (SSA)? This study addressed this question by assessing the spatial variation in fertilizer use and its association with rice yield and yield gap in 24 SSA countries through a systematic literature review of peer-reviewed papers, theses, and grey literature published between 1995 and 2021. The results showed a large variation in N, P, and K fertilizer application rates and rice yield and an opportunity for narrowing the yield gap by increasing N and P rates, especially in irrigated rice systems. We identified clusters of sites/countries based on nutrient input and yield and suggested research and development strategies for improving yields and optimizing nutri

SUBMITTER: Johnson JM 

PROVIDER: S-EPMC10518462 | biostudies-literature | 2023 Sep

REPOSITORIES: biostudies-literature