Effect of K2SO4and KNO3foliar application on wheat growth

A field experiment was conducted to investigate the effect of different concentrations of k2so4 and kno3 foliar application (2 and 4%) on the growth of wheat (cv. watan) at soil salinity research institute (ssri) farm,pindi bhattian,punjab,pakistan during rabi season,2007. treatments were: soil application k2so4,kno3,2 and 4% k2so4,2% kno3 + 2% k2so4,4% kno3 +2% k2so4,2% kno3 + 4% k2so4,4% kno3+4% k2so4. treatments were assigned using randomised complete block design with three replications. the crop was harvested at maturity,data on tillering,plant height,spike length,number of grains/spike,1000-grain weight,straw and wheat yields were recorded. tillering,number of grains/spike,1000-grain weight and wheat yield significantly (p < 0.05) increased by different levels of doses. 2% k2so4 and 4% k2so4 improved the tillering capacity of wheat compared with the control. the combination of 2% kno3 + 4% k2so4 attained the highest grain yield (2825 kg/ha) which was statistically at par with 2% k2so4 (2795 kg/ha). the lowest grain yield (2129 kg/ha) was received by the control (soil applied k2so4). grain yield after spraying was up to 31% higher than in the control.