Investigation of the effect of application of natural zeolite and zinc sulfate on agronomic traits and wheat yield (Triticum aestivum) of mahdavi cultivar

In order to evaluate the effect of application of natural zeolite and zinc sulfate on wheat yield, an experiment was conducted as a split plot in a randomized complete block design with four replications as a field in Jalilabad village of Pishva in Varamin region during 2019-2020 experimental year. Main factor included the treatment of natural zeolite (clinoptilolite) at three levels of zero, 10 and 20 ton/ha and the second factor included the treatment of zinc sulfate (36% zinc) at three levels of zero, 30 and 60 kg/ha. The results showed that the effect of natural zeolite and zinc sulfate alone and their interaction at the level of one percent on most of the studied traits were significant. In comparing the mean interaction of natural zeolite and zinc sulfate, maximum plant height, spike length, peduncle length, flag leaf length, number of seeds per spike, number of fertile spikes per square meter, grain yield, biological yield and protein percentage were obtained in the treatment of 20 ton/ha of natural zeolite with 60 kg/ha of zinc sulfate. The highest harvest index was obtained in the treatment of 30 kg/ha of zinc sulfate. None of the mentioned treatments had a significant effect on 1000/grain weight. Combined use of natural zeolite and zinc sulfate increased the yield of wheat by 67.1% compared to control.