The aim of the present study was to evaluate the ability of integration of
salicylic acid, vermicompost and bioagent for effective management of
chickpea wilt disease.
Methodology: The effectiveness of salicylic acid and ZnSO4
unaided and in combination with Plant growth-promoting rhizobacteria (PGPR)
and vermicompost were evaluated against Fusarium wilt of chickpea
under natural condition. Three sets of experiment with nine treatments were
conducted in earthen pots in completely randomized design. Ten seeds of wilt
susceptible chickpea variety JG 62 were sown. Twenty-days-old plants were
sprayed with salicylic acid (Set I), ZnSO4 (Set II) and distilled
H2O (Set III). After 24 hr of foliar spray, the whole set of
treatment was inoculated with Fusarium oxysporum f. sp. ciceri
inoculums, except uninoculated control. The number of wilted seedlings in
each pot for each treatment were recorded at 10, 20 and 30 days
post-inoculation (dpi) and compared with uninoculated pots.
The combined effect of vermicompost amendment @15% and pre-inoculation
treatment of salicylic acid showed 0.00, 6.67 and 6.67% wilt incidence
whereas treatments having ZnSO4 as pre-inoculation foliar spray
resulted in 0.00, 13.33 and 13.33% wilt incidence at 10, 20 and 30 dpi,
respectively. Further, the combined treatment of 15% vermicompost along with
seed bacterization and pre-inoculation foliar spray of salicylic acid showed
complete protection against F. oxysporum f. sp. ciceri. The beneficial
effect of vermicompost and PGPR isolate on root and shoot length, and fresh
and dry weight of chickpea plants were also observed.
Interpretation: High potential for integrating
vermicompost, bioagent and foliar application of salicylic acid to surrogate
chemical fungicides for eco-friendly and sustainable management of wilt
disease in chickpea.
Chickpea wilt, Pseudomonad, Salicylic acid, Vermicompost