Effect of Bio and Phosphate Fertilization on Growth and Yield Traits of Two Soybean Varieties [Glycine max (L.) Merrill]

Abstract

This study was conducted to investigate the physiological effect of Biofertilization EM1, phosphate fertilization on yield and quality traits of two Soybean Varieties [Glycine max (L.) Merrill] , The study was included field experiments of two concentration of Biofertilization EM1 (zero , 1.5ml/Liter), four levels of phosphate fertilization (0, 40, 80, 120 kg p2o5/ ha) and two Soybean Varieties (Lee-74 , Senaia-2) conducted in two locations for the Summer Season 2011. The first in Reasreches station of Field Crops Department-College of Agriculture and Forestry-Mosul University in Mosul City, while the second was in Tuzkhurmatu City about 105 km North East Tikrit City. The Randomized Complete Block Design (R. C. B. D.) with Factorial experiments system with three replications was used in this experiment. The results obtained can be summarized in the following: Biofertilization EM1 with concentration (1.5 ml/Liter) caused a significant increase in traits No. of pods/plant, seed weight/pod, pod weight, seed partition % , seed yield, protein and oil yield in both locations, protein percentage in Tuzkhurmatu location while caused significant decrease in Shrinkage seed percentage in Tuzkhurmatu location . Phosphate fertilization level (80 kg p2o5/ ha) in Mosul location and (40 kg p2o5/ ha) in Tuzkhurmatu location was significantly Superior in traits No. of pods/plant, seed weight/pod, pod weight, and seed yield while (80 kg p2o5/ ha) gave highest rate in trait seed partition % in Tuzkhurmatu location . Phosphate fertilization level (80 kg p2o5/ ha) caused significant increase in Trait protein yield in both locations, oil yield in Mosul location, protein percentage in Tuzkhurmatu location, while (40 kg p2o5/ ha) significantly Superior in trait oil yield in Tuzkhurmatu location . Senaia-2 variety Significantly Superior in Trait seed weight/pod, pod weight, and seed yield in both locations, No. of pods /plant, Shrinkage seeds percentage , protein percentage and protein yield in Tuzkhurmatu location and oil yield in Mosul location .