National Academy of Agricultural Sciences (NAAS)
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PRINT ISSN : 2319-7692 Online ISSN : 2319-7706 Issues : 12 per year Publisher : Excellent Publishers Email : editorijcmas@gmail.com / submit@ijcmas.com Editor-in-chief: Dr.M.Prakash Index Copernicus ICV 2018: 95.39 NAAS RATING 2020: 5.38 |
Shisham plantations and natural forests throughout sub Himalayas region, Indogangetic plains and Indian plateau region are facing large scale mortality. Seedling health is key to success of any tree plantation programme. Plant growth promoting rhizobacteria intimately interact with the plant roots and consequently influence soil microbial activity and seedling vigor. In present study, pot culture experiment was carried out under glass house conditions with two Dalbergia sissoo cultivars PS90 and PS52. The experiment was set in a completely randomized block design (CRD) and consisted of six treatments including controls with three replications in each treatment. During experiment seven day old seedlings of D. sissoo cultivars germinated from freshly collected seeds and subsequently treated with Pseudomonas koreensis AS15 strain by root dip method were planted in 1kg capacity plastic pots. Artificial inoculation of P. koreensis AS15 enhanced the plant vigour parameters in both D. sissoo cultivars PS90 and PS52; PS 90 cultivar exhibiting higher shoot fresh weight (5.8gm at 60 DAP) and shoot length (45.6cm at 60 DAP) than PS 52, shoot fresh weight (2.5gm at 60 DAP), and shoot length (40 cm at 60 DAP) in two factor analysis of variance. There was variation in soil enzyme activities with respect to cultivars. The soil planted with PS90 cultivar exhibited higher alkaline phosphatase (AP) and fluorescein di acetate hydrolysis (FDA) activities as compared to those with PS52 cultivar seedlings. The enhanced plant vigor parameters and soil enzyme activities indicated that interaction of PS90 cultivar with inoculant strain was robust. The results indicated that response of P. koreensis AS15 inoculation is cultivar specific and can be used to raise disease resistant D. sissoo seedling that also sustain transplantation shock.
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