Abstract
A field study pertaining to the effect of different levels of irrigation on yield and yield components of wheat cultivars was conducted during 2005-2006 growing season at Agronomic Research Area, University of Agriculture, Faisalabad (31o .25N, 73o .09E). Treatments were three cultivars (AS-2002, SH-2002, Aqab-2000), and five irrigation levels I1 (irrigation at crown root stage), I2 (irrigation at crown root + tillering), I3 (irrigation at crown root + tillering + booting), I4 (irrigation at crown root + tillering + booting + anthesis), and I5 (irrigation at crown root + tillering + booting + anthesis + milking). Wheat cultivar AS-2002 recorded highest grain yield (4821.5 kg ha-1) which was significantly higher than the other two cultivars. Wheat crop supplied with five irrigations at crown root + tillering + booting + earing + milking recorded the highest grain yield (5696.8 kg ha-1) which was significantly higher than all the other irrigation levels. At highest irrigation level I5, cultivars AS-2002 and SH-2002 produced grain yield at par but significantly higher than Aqab-2000. At all the other irrigation levels, cultivar AS2002 recorded significantly higher grain yield than the other two cultivars.

Naeem Sarwar, M. Maqsood, K. Mubeen, M. Shehzad, M.S. Bhullar, R. Qamar, N. Akbar. (2010) Effect of different levels of irrigation on yield and yield components of wheat cultivars, , Volume-47, Issue-4.
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