Effect of Potassium Sulphate on Growth Parameters and Yield in Various Quantities of Seed Analysis Six-row Barley

This experiment was conducted based on split plot expriment with completely randomized block design with 3 replications during 2013-2014 in the research and experimental field of Islamic Azad University. This experimental factors were including 4 potassium sulfate amounts (0, 50, 100 and 150 Kg.ha) and seed rate (200, 300, 400 and 500 seed.m2). The results showed increese levels of potassium sulfate amounts to 150 kg.ha increased leaf area index (LAI), crop growth rate (CGR) and relative growth rate (RGR) was highest seed rate of 400 seed.m2 of leaf area index (LAI) and crop growth rate (CGR), and the density of 200 seed.m2 in terms of relative growth rate (RGR) was also superior. The difference between The amount of potassium in terms of Seed weight, number of grains per spike and grain yield were significant at the 1% level. The highest crop yield was obtained from 150 Kg potassium sulfate and 400 seed.m2 (4098.22 Kg.ha), and the minimum yield crop was obtained from 0 Kg potassium sulfate 200 seed.m2 (2540.12 Kg.ha).