Abstract
A chemical fertiliser-adaptive variant, Bacillus subtilis BSK17, showed induction in growth at 0.32 M of Urea, 0.05 M of DAP, 0.04 M of MoP and 0.08 of gypsum. In addition, B. subtilis BSK17 produced various plant growth-promoting substances and showed higher colony growth inhibition of Fusarium oxysporum that increased with increase in incubation time and reached the maximum by 78% at 120 h. In field, antibiotic-resistant marker strains of B. subtilis BSK17ery+ and B. subtilis BSK17tet+ showed more improvement in seed yield (90% than the control and 24% than full dose of chemical fertilisers) of Cicer arietinum when applied with half dose of chemical fertilisers (N5+5P15+15K15S10+10+10). Root length, shoot length, fresh and dry weight of root and shoot of plants were enhanced after 120 days in comparison to control; all values were significant at 1% CD. The strain significantly colonised the rhizosphere of C. arietinum by 6.64 log cfu after 120 days.
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