عنوان مقاله [English]
نویسندگان [English]چکیده [English]
Due to high adaptation of forage sorghum to extreme environmental conditions, it has considerable importance for forage production in the semiarid regions. Therefore, in order to evaluate effects of solitary and integrated application of urea fertilizer, cattle and poultry manures on growth and yield of this crop, a field experiment was conducted in a randomized complete block design with four replications in 2010 on the research farm in Shahrekord University,. Treatments included control, urea fertilizer (UF), cattle manure (CM), poultry manure (PM), CM-UF, PM-UF, CM-PM. The results showed that the application of poultry manure significantly increased height of main stem, leaf area index, leaf dry weight, stem dry weight and panicle dry weight as compared with control treatment and the greatest forage yield (11.16 Mg/ha-1) was obtained in poultry manure treatment, however it didn’t have significant differences with that of UF, PM-UF, and CM-PM treatments. The lowest dry matter yield (5.97 Mg/ha-1) was produced in control treatment. Generally, the application of poultry manure and or combination of urea fertilizer with animal manures were suitable for forage sorghum production in the similar conditions.