The Effect of Adding Rice Husk and Zeolite on Some of the Soil Properties at Different Times

Document Type : Research Paper


1 M.S. Student, Department of Soil Science, College of Agriculture and Natural Resources-, Lorestan University-Khoramabad- Iran

2 Department, of Soil Science-College of Agriculture and Natural Resources Lorestan University, Khoramabad, Iran


In order to study the effect of two types of organic matter and mineral modifiers on some of the properties soil, in 2020 an experiment was conducted in the greenhouse faculty of the agriculture, lorestan university. Test treatments include: 1- organic modifiers with three level (1, 3, 5 wool weight) and mineral modifiers with three level (3, 5, 10 wool weight) and control treatment 2- three different incubation time(30(control), 60, 90 days). Before the three of these times, an incubation monthly applied to the balance of corrective and soil material was also applied. The result showed that, the use of both modifiers increased average weight of the aggregate diameter, porosity, weight moisture, electrical conductivity, total nitrogen, acidity, carbon ratio to nitrogen and microbial respiration compared to control, the average weight of the diameter of aggregate increased by 26.7% compared to the control. But the effect of the decreased in the bulk density and the hydrophobicity of the samples were compared to the control treatment. 10% weight of zeolite and 3% of the weight of rice shell treatment fell by about 37.8% compared to the control. Over time, amount bulk density, porosity, electrical conductivity, organic carbon, total nitrogen and microbial respiration the trend was declared. But the time on soil acidity and carbon ratio to nitrogen had an incremental effect. The carbon ratio to nitrogen during the incubation period of 60 and 90 days, had significantly increased by 7.04 and 17.32% compared to the control. The result of data analysis showed that the effect of time on hydrophobic and average weight of the aggregate diameter and weight moisture was not significant.


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