Abstract
The studies pertaining to the effect of different lfvels of nitrogerl viz. 0,50,75 and 100 kg ha on the growth and yield behaviour of three wheat genotypes, Lu-26s, Kohinoor-83 and Faisalabad-83, were conducted on a sandy clay loam soil under Faisalabad condition. The results led to the conclusion that nitrogen affected the growth and yield parameters significantly over control. Howevr, application beyond the level of 75 kg N ha did not help in increasing grain yield to a significant extent. All the three varieties under study exhibited almost similar growth behaviour and did not differ significantly in yield performance from one another. •
INTRODUCTION:
. Wheat (Triticum aestivum L.) is grown in Pakistan on an area of 7.26 m.ha with the annual ?reduction of 11.70 m.tonnes,the average yield is 1612 kg ha (Anonymous 1985). This per hectare yield is far below the inherent potential of the existing recommended promising varieties. Among the various yield determining factors, soil fertility status is of prime importance. The role of mineral fertilizers to make up nurent deficiency in sail is well recognized because these are easy to handle and produce quick results. The researchers like Lal aid B1-argava (1982), Masud and 3hatti (1983), and Sherin (1985) from their experiments on wheat conducted at different-1 lncations under varying level of nitrogen (0-120 kg 'FLA .) cornrlud-4 that increasing level
