Nitrogen Status of the Soil in the Captain Elechi Amadi Polytechnic Demonstration Farm

Abstract

This study evaluates the nitrogen status of soil in the Captain Elechi Amadi Polytechnic demonstration farm, aiming to determine nitrogen levels, identify causes of nitrogen depletion, and propose remediation strategies. Soil samples were collected from five geo-referenced points and analyzed using the Kjeldahl method. Results indicated a mean total nitrogen content of 0.036% (360 ppm), exceeding optimal levels for most crops. Excessive nitrogen can suppress flowering and negatively impact crop yield and quality. Recommendations include planting nitrogen-demanding crops, reducing nitrogen-rich fertilizer application, and using agricultural lime to balance soil nutrients.