The effects of different level of nitrogenous and phosphorus doses on herbage yield and yield components of silage maize as the second crop under the ecological conditions of Tokat

Abstract

Nitrogen and phosphorus play a pivotal role in the crop growth and yield. This research was conducted to determine the effects of different nitrogenous (0, 60, 120, 180, 240 kg N ha-1) and phosphorus doses (0, 60, 120 kg P2O5 ha-1) on a plant length, leaf number, herbage yield, dry matter yield, harvest index, leaf nitrogen content, stalk nitrogen content, cob nitrogen content, leaf phosphorus content, stalk phosphorus content, cob phosphorus content, leaf crude protein content, stalk crude protein content, cob crude protein content in silage maize cultivar (MF-714 FAO 500) as the second crop in the experimental field of the Agricultural Faculty of Gaziosmanpa a University in Tokat Conditions during the years of 2003-04. It was shown that nitrogen dose of 240 kg ha-1 and phosphorus dose of 120 kg ha-1 were a suitable combination for maximum herbage yield according to regression analysis.