Residual Effect of Phosphorus on Grain Yield of Maize in Pawe District of North Western Ethiopia

Abstract

Phosphorus is an important nutrient element in crop productivity. Maize is one of the common stable food cereal crop grown in different parts of Ethiopia and mostly affected by phosphorous nutrient. An experiment was conducted to evaluate the effects of different levels of residual P for three consecutive years (0, 20, 40, and 80 kg ha^-1) in Pawe agricultural research center. At the fourth year by applying 0, 10, 20, and 30 kg ha^-1 of P final experiment was conducted. the highest grain yield 8359 kg/ha was recorded from the interaction R12P3 which means a residual of 0, 40, 20, 20 kg P/ha for four consecutive years and 20 kg/ha at the experimental year. Over application of P from the previous seasons significantly affects the yield of maize in the experiment year regardless of the current dosage. So the experiment indicates that over accumulation of P affects the growth and yield of maize.

DOI: 10.7176/JBAH/12-9-03

Publication date:May 31^st 2022