Maize Response to Cowdung, Nitrogen and Sulphur in Nigeria Savanna

Extensive studies have been conducted in the Nigerian savannas on nitrogen and phosphorus considered as most limiting nutrients for crop production, but not much on S nutrition, especially when in combination with organic manures. Organic manure is a good contributor of N in soils, though the amount of N contained in manure varies with source, quality of the substrate, age, management and ease of mineralization, therefore its co-application with readily soluble inorganic N and S becomes necessary and offers a realistic approach towards sustainable soil productivity, while at the same time improving the soil physical conditions for nutrient retention and uptake by plants.