Mohammad Reza Mahmoodabadi - MSc of soil science and expert of Agri bank, Birjand, Iran
Abdol-Majid Ronaghi - Department of Soil Science, College of Agriculture, Shiraz University, Shiraz, Iran

Organic materials have many positive effects on physical, chemical, and biological characteristics of soils. So they have an important function in improving the soil fertility. The main purpose of this greenhouse study was to evaluate the impact of cattle feedlot manure and soil texture on growth, nutrient concentration of soybean plants and some physico-chemical properties of soil. Treatments consisted of three levels of manure (0, 2 and 4% based on dry weight) with three different soil textures (sandy clay loam (SCL), clay loam (CL) and clay (C)). Results indicated that application of cattle feedlot manure led to increment of shoot dry weight. Maximum weight of soybean dry weigh obtained from SCL2 treatment. Application of manure was led to significant increment of solubility of nutrient elements for plant absorption. The results of this experiment demonstrated that soil texture and manure content of soils have an important compact on soybean growth and development.

Cattle Feedlot Manurem, Growth, Soil Texture, Soybean