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Publicatie

Optimizing productivity of maize in the Northern Nigerian savanna: Influence of nutrient limitations and imbalances

Boek - Dissertatie

Nigeria's annual maize (Zea mays L.) production has increased from 2.4 million metric tons in 1961 to about 10.4 million metric tons in 2013 which placed Nigeria as the 11th largest producer of maize in the world. However, yield levels have remained very low and far below the potential of the crop. Aside water, soil nutrient depletion and poor nutrient management have been reported to be one of the most important abiotic constraints contributing to a stagnant low yield of maize in Nigeria. Therefore, to optimize the productivity of maize in Nigeria, evaluation of site-specific nutrient-related constraints reducing yield and viable ways to counteract such constraints become imperative. A minimum of 90 on-farm nutrient omission trials (NOT) will be conducted in three states of Nigeria falling within the maize belt in the Nigerian Savanna ecological zone. The nutrients content in the soil (prior to the establishment of the NOT) and in the plant tissue will be analyzed. Viz-à-viz agronomic and yield data will also be taken. The data generated will be used for the determination of nutrient limitations and balances using Diagnosis and Recommendation Integrated System (DRIS) and Compositional Nutrient Diagnosis (CND). An algorithm for the determination of nutrient requirement to achieve an optimal yield will be evaluated using Quantitative Evaluation of the Fertility of Tropical Soils (QUEFTS). At the end, as a follow-up, demonstration of adapted fertilizer advices will be installed and evaluated by farmer groups and extension services.
Jaar van publicatie:2019
Toegankelijkheid:Open