Compatibility of Trichoderma, Bradyrhizobium sp. and Bacillus subtilis with insecticides and biopolymers
COMPATIBILITY OF TRICHODERMA, BRADYRHIZOBIUM SP. AND BACILLUS SUBTILIS
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Authors
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S LAKSHMI PRASANNA
ICAR-Indian Institute of Oilseeds Research, Rajendranagar, Hyderabad-500 030, Telangana
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R D PRASAD
ICAR-Indian Institute of Oilseeds Research, Rajendranagar, Hyderabad-500 030, Telangana
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K S V P CHANDRIKA
ICAR-Indian Institute of Oilseeds Research, Rajendranagar, Hyderabad-500 030, Telangana
Keywords:
Bacillus subtilis, Bradyrhizobium, Imidacloprid, Thiamethoxam, TrichodermaAbstract
Compatibility of three different strains of Trichoderma, Trichoderma harzianum Th4d, Th, Trichoderma asperellum TaDOR7316, two isolates of Rhizobium (Bradyrhizobium sp.) isolated from root nodules of soybean, groundnut and Bacillus subtilis with two insecticides, (thiamethoxam and imidacloprid) and two biopolymers (chitosan and cellulose) at different concentrations was tested in vitro. Bradyrhizobium isolates (soybean and groundnut) and Bacillus subtilis were found compatible with insecticides and biopolymers. All the three Trichoderma strains Trichoderma harzianum Th4d, Trichoderma harzianum Th, and Trichoderma asperellum TaDOR7316 were compatible with biopolymers. Imidacloprid showed inhibition ranging from 3.7% to 16.2% of Trichoderma @1000ppm. Thiamethoxam showed 7.5 to 10% inhibition of Trichoderma harzianum, Th4d @1000ppm. Trichoderma is compatible with Bacillus subtilis and Bradyrhizobium isolates of soybean and groundnut.
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