weather conditions greatly affect the performance of new wheat cultivars for
yield and resource use efficiency. In order to know the effect of irrigation
schedules based on growth stage (the most vital criterion in the region) on
growth, yield and radiation use efficiency of wheat cultivars in Faisalabad
conditions, a study was planned at Agronomic Research Area, University of
Agriculture, Faisalabad during 2009-2010. Split plot design with irrigation levels in
main plots and cultivars in sub-plots was implied. Irrigation levels were: IT = irrigation
at tillering stage, ITS = irrigation at tillering and stem elongation stage,
ISB = irrigation at stem elongation and booting stage and ITSBG = irrigation at
tillering, stem elongation, booting and grain filling stage. Cultivars selected
were: Faisalabad-2008, Lasani-2008, Miraj-2008, Shafaq-2006 and Chakwal-97.
Irrigation treatment ITSBG gave higher grain yield (4.23 t·ha-1) followed by ISB
however ITSBG was statistically similar to ISB in radiation use efficiency
(RUE) for grain yield (RUEGY). Similarly the two treatments were
statistically at par in maximum leaf area index, total dry matter (TDM)
accumulation, cumulative photosynthetically active radiation (PAR), and RUETDM.
Hence where less numbers of irrigations are available, irrigation at stem
elongation and booting stage is suitable for achieving economic yield.
Lasani-2008 produced maximum grain yield (4.37 t·ha-