Effect of nitrogen levels and scheduling on yield attributes and yield of quality protein maize (Zea mays L.)

A field experiment was conducted during two successive years (2010 and 2011) under partially irrigated condition to study the effect of nitrogen levels and their scheduling on productivity of quality protein maize (Zea mays L.) with and without sulphur application. Maximum yield attributes and grain yield were recorded under application of 175 kg N/ha along with four split applications of recommended dose of nitrogen in ratio of 25: 25 : 25 : 25 as basal, 4-6 leaf emergence, knee high and 50% tasseling stages, respectively, over recommended staggering of nitrogen in three splits (33.3 : 33.3 : 33.3) at sowing, knee high and 50% tasseling stages.