Effects of Nitrogen and Phosphorous Biofertilizers on Yield and Yield Components of Corn AS71 in Dareh-shahr, Iran
Subject Areas : Journal of Crop EcophysiologyA. Fathi 1 , A. Farnia 2 , A. Maleki 3
1 - Member of Young Researches Club, Ilam Branch, Islamic Azad University, Ilam, Iran
2 - Assistant Prof., Department of Agronomy, Boroujerd Branch, Islamic Azad University, Boroujerd, Iran
3 - Assistant Prof., Department of Agronomy, Ilam Branch, Islamic Azad University, Ilam, Iran
Keywords: corn, Nitroxin, Biophosphore, Nitrokara,
Abstract :
Biofertilizers are inputs that naturally supplement replace chemical fertilizers and they are recommended in sustainable agriculture. To study the effects of biological fertilizers on yield and yield components of corn, a factorial experiment in randomized complete block design with three replications were conducted at Dareh-shahr, Iran in 2010. Biological factors were 4 levels of nitrogen biofertilizers (nitroxin, nitrokara, supernitroplus and control) and 4 levels of phosphorus biofertilizers (biophosphore, phosphate fertilized 2, MC1 and control). Results showed that biological nitrogen and phosphorus fertilizers had significant effects on all traits under study. Interaction of nitrogen biological fertilizer × phosphate biological fertilizer was significant on 100 seed weight (P<0.01) and the number of grains per ear row (P<0.05). Applying super nitroplus increased seed yield up to 9125 kg/ha, which is 47% more than control. Use of biological phosphate fertilizer produced 36% more seed yield 9149 kg/ha compared with control treatment. Generally, the use of biological nitrogen and phosphorus fertilizers improves yield and yield components appreciably in corn.