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Effect of Streptomyces Sp on Growth Promotion and Grain Yield in Black Gram Fields (Vigna Mungo)

Alapati Krishna Satya *, Kunchala Rajyalakashmi, Syed Shabana, Qasim Turki Kadhim, Ch. Padmavathi, Merakanapalli Kishore Babu

Six streptomyces sp ESS-4 (Streptomyces fradiae), DVS-11 (Streptomyces olivoviridis), KZSS-6 (Streptomyces koyangensis) NVS-10 (Streptomyces flavofuscus), TSS-3 (Streptomyces griseorubens), and TVS-2 (Streptomyces lunaelactis) were previously reported to antagonistic activity in fungal pathogens, PGP traits, green and field conditions in black gram. These isolates were characterized for their antibacterial activity for streak plate method, antibiotic resistances, and optimization of pH, salinity, temperature, carbon sources, and heavy metals. These streptomyces sp show inhibition to 11 antibiotics they produce the halo-zone produces 14 to 19 cm. This streptomyces sp grow in pH 3 to 13, salinity up to 0% to 12%, temperature up to 20-50, carbon sources for glucose, fructose, sucrose, and starch, and heavy metals tolerances. Out of six sp, KZSS-6 was better results. So KZSS-6 strain was further evaluated on the greenhouse and black gram field conditions. This streptomyces greenhouse condition they enhance the root length, yields enhanced when compared to the control. In greenhouse conditions black gram plant height 8 to 14 cm, root length 1 to 6 cm, the seeds 2 to 5cm, total plant weight is 0.20 to 0.60 mg, and total dry weight for plant 7 to 14 mg. In the field experiment, root height and weight (10 to 13 cm, 0.25 to 0.50 mg), shoot length and weight (3.10 to 3.50 cm), stem height and stem weight (22 to 32 cm, 4.0 to 4.25 gm), plant weight (5.50 to 7.50 gm), number of fruits weight (10, 100, and 1000) (0.4 to 0.50, 2.50 to 5.0 and 22 to 45 gm), and finally yield (11.5 to 29.50 tons)