Abstract

In order to study the effects of zeolite application on growth, yield and yield components of corn grown under conditions of different density, an experiment was conducted in research field of Islamic Azad University, Varamin Branch during 2014 growing season. The experimental design was carried out in a randomized complete block with a factorial arrangement of treatments in three replications. Main plots included four different levels of density (6, 8, 10 and. 12” plants per meter) and sub-factors included zeolite application (0, 10, 20 and 30 t/h). The obtained results showed that the effect of compression at a rate of stem diameter, number of rows per corn, number of seeds per row, 1000-seed weight, biological yield, electrical conduction and the extinction coefficient at the level of 5% on plant height and seed yield was significant. In addition, the results showed that effect of zeolite on biological yield, chlorophyll b and total chlorophyll at the level of 1% and on the number of seeds per row, 1000-seed weight and extinction coefficient at the level of 5% was significant. Comparison of the results suggests that the use of zeolite with different densities of 20 t/ha with a density of 8 plants per square meter would be the highest yield and yield components.