EVALUATION OF ACIDITY TOLERANT PHOSPHATE SOLUBILIZING BACTERIAL ISOLATES ON MOONG (Vigna radiata) CROP IN FIELD CONDITIONS OF KORBA DISTRICT (CHHATTISGARH).

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Date
2016
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Indira Gandhi Krishi Vishwavidyalaya, Raipur
Abstract
A field experiment was conducted during the year 2015-16 at the Farm, Krishi Vigyyan Kendra, Lakhanpur village, Katghora block, Korba district (C.G.) in order to evaluate ten phosphate solubilizing bacterial isolates on growth performance and yield of moong crop (Vigna radiata) in acidic soil conditions. The experiment was laid out in RBD comprising 12 treatments (10 acidity tolerant PSB isolates, one standard and one un-inoculated control) to find out effective PSB isolate to be given as suitable biofertilizer for enhancement of yield of moong under P-deficient acid soils condition. The soil was highly acidic in reaction and low in available macronutrients. PSB isolates present in culture deposits of Agricultural Microbiology Department, College of Agriculture, Raipur revived for preparation of biofertilizer for seed treatment purpose. Colonies of all the isolates were found to be round and yellowish in colour on Pikovskaya media. PSB isolates were found for phosphate solubilization ability under stress conditions C). Effect of these 10 local PSB isolates were evaluated with PSB national check (IARI; H-27) xii as dual inoculation along with Rhizobium on the growth performances of moong in field experiment under acidic soil condition in Korba District of Chhattishgarh. Data revealed that significant increase in plant height (28.40 to 38.84 cm), shoot biomass (0.92 to 2.88g/plant) and P accumulation (2.55 to 11.05 mg P/ plant) was observed in inoculation of PSB-K-196 over un-inoculated control at 40 DAS. Nodulation (nodule no./plant and dry weight of nodules mg plant-1 ) was found significantly maximum (31.48 and 46 respectively) in inoculation of PSB-K-196 followed by PSB-K-69 against other isolates while at control it was found minimum (18.24 and 21 respectively) at 40 DAS. Significant increase in grain yield (5.81 to 9.71 qha-1) was found with treatment T12 (PSB-K-196) followed by T5 (PSB-K-69) over uninoculated. P uptake by Moong significantly increased from 2.07 kg ha-1 at control to 4.32 kg ha-1 and 4.08 kg ha-1 with inoculation of PSB-K-196 and PSB-K-69 respectively in grain. Isolates PSB-K-196 and PSB-K-69 can be used to formulate location specific potential phosphate solubilizing biofertilizer for moong crop in order to enhance productivity under acidic soil condition.
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106 p.
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