Investigating the effect of dietary supplements and bacteria (Pseudomonas putida) To improve some quantitative and qualitative traits of button mushrooms (Agaricus bisporus)

To evaluate the increase in quantitative and qualitative yield of Agaricus bisporus button fungus by evaluating the effect of soy flour (SF) and iron chelate (Fe) supplements inoculated with plant growth-promoting bacteria. A factorial experiment with four replications in Dezful Mushroom Company It was done in 1397. Iron at Three levels of zero, 250 and 500 mg / l from source of 6% iron chelate, soy flour at three levels of zero, 1.5 and 3% by weight of dry compost and bacterial inoculation at two levels (no inoculation and inoculation of mycelium with P. putida) was. The results showed that maximum fresh yield (20.77 kg / m2) was obtained from (Pseudomonas Potida + soybean powder + iron chelate) treatment. methionine (29.2 mg/ kg―1 DW) and lysine (4.97 mg/ kg―1 DW) were observed in (Pseudomonas putida + soy flour 3%) treatments. The highest antioxidant capacity was observed in (Soy flour 1.5% + iron chelate 500 mg / l) treatment with 4.19 mmol / kg in non-bacterial inoculation. According to the results, enrichment of cover soil with iron did not have a significant effect on the quantitative and qualitative traits of the fungus, but the application of soy flour at the level of 1.5%, especially with P. putida, had a more effective role. Therefore, to increase the production and improve the quality traits of the fungus, the use of soy flour in the amount of 1.5% with P. putida is recommended.