abas Khashei Siuki - Irrigation and drainage department, Agriculture faculty of Tarbiat Modares university of tehran
mahdi Kouchakzadeh - irrigation and drainage department, Tarbiat Modarres University of Tehran of Iran
hosein riahi - Water structures department, agriculture faculty of Tarbiat Modarres university
zahra zanganeh sirdari - Agricultural Irrigation and Drainage Engineering, University of Tehran (UT)

In order to study the effect of consumption of different quantities of natural zeolite and soil moisture depletion on natural trend of corn growth (Zea mays L.) single grass 704, a factorial pot experiment was conducted with 12 treatments and three replications and totally in 36 pots in the investigative field of Agriculture Faculty of Tarbiat Modares University. In this experiment zeolite quantities were taken in four levels (0, 2, 4, 8 gr/kg soil) and moisture depletion percent in three levels (45, 65, 85 % of soil water) during growing season. Then were measured the leaf area, height, and diameter of the stem. The obtained results showed that consumption of 2 grams zeolite in 1 kg soil had important effects on the leaf area and the diameter of maize, in comparison with control treatment it could affect on the yield.

Zeolite, Growth trend, Maize, Management allowed depletion