Effect of phosphate and sulfur solubilizating microorganisms and zinc foliar on yield and yield components of Soybean (Glycine max L.)

In order to determine the effect of biofertilizer (Thiobacillus thiooxidanc and Pseudomonas putida) and zinc foliar application (Zinc sulfate) on yield، yield components، oil and protein percentage of soybean cultivar (TMS) in summer cultivation in 2010 at Aleshtar، Lorestan، Iran. The experiment was carried out in farm condition، using completely randomized factorial design with 8 treatments and 3 replications. The treatments included Zinc sulfate at two rates، 0% (Zn0)، 10% (Zn1)، inoculation with Thiobacillus thiooxidanc (T1) and without inoculation (T0) and inoculation with Pseudomonas putida (P1) and without inoculation (P0). The results indicate that zinc foliar application significantly increased، plant height number of pods per plant، 1000-seed weight، grain yield and percent of seed protein (p<0. 05). Biofertilizer Thiobacillus thiooxidanc significantly increased plant height and percent of seed protein. Maximum shoot percent of seed protein was achieved by treatment P1T1 (4109 kg/ha) and maximum shoot percent of seed protein was achieved by treatment Zn1T1 by 31. 67%. Positive and significant correlation between seed yield، with seed protein and number of pod per plant with one thousand seed weight were observed.