Response of Peanut (Arachis Hypogaea L.) to Nitrogen, Minor Elements and Phosphorus Fertilization on a Newly Terraced Ultisol in Jamaica

Abstract

Studies were conducted to determine the response of peanuts to nitrogen at levels of 10, 50 and 100 kg/ha respectively and minor elements (M.E.) on a newly terraced Ultisol. Two other trials tested residual effects of applied fertilizers (Trial 2) and response of peanuts to phosphorus (Trial 3) at levels of 0, 75, 150, 225 and 300 kg/ha P205 respectively. Whole kernel yields ranged from 2.12 t/ha for 50 kg/ha N and M.E. treated plots to 4.20 t/ha for 10 kg/ha N plots. In Trial 2 whole kernel yields declined significantly and range from 1.13 t/ha for 10 kg/ha N plots to 1.50 t/ha for 10 kg/ha N + M.E. treated plots. Control plots receiving no fertilizer produced 0.5 t/ha or 12% of highest yields. Yields declined further in Trial 3 to 0.82 t/ha for 75 kg/ha P2O5 treated plots and 1.01 t/ha for 150 kg/ha P2O5 plots.