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 |
Tomato (Solanum lycopersicum L.) is one of the most widely grown vegetable crops in the world. ‘Lycopene’ produced only by tomato is a natural antioxidant that works effectively to slow the growth of the cancerous cells. Tomato plant is susceptible to various diseases caused by different agents such as Bacteria, Viruses, Nematode, Fungi and Abiotic factors. Among the fungal diseases, wilt caused by Fusarium oxysporum f. sp. lycopersici causes economic loss of tomato production worldwide. PGPR playing a vital role and capable to colonize the plants root system and improve the growth and yield. In this present study biocontrol agents viz, Bacillus subtilis and Pseudomonas fluorescens have been tested against the tomato wilt pathogen Fusarium oxysporum f. sp. lycopersici. In the present study the from among the Pseudomonas isolates collected , the isolate Pf5` collected from Puthur showed the maximum inhibition and significantly inhibited the growth of F. oxysporum f. sp. lycopersici (37.12mm), which was 58.75 per cent reduction on the growth of the pathogen. In the poisson food technique the maximum reduction in the growth of mycelium is noticed in the isolate Pf5 with 45.89 mm, 28.45mm, 16.78mm and 8.46mm 10, 20, 30 and 40 percent respectively. And among the Bacillus isolate collected the isolate Bs6 collected from Arasur` showed the maximum inhibition and significantly inhibited the growth of F. oxysporum f. sp. lycopersici (32.63 mm), which was 63.74 per cent reduction on the growth of the pathogen when compared to control. In poison food technique the maximum reduction in the growth of mycelium is noticed in the isolate Bs6 with 40.48mm, 31.23mm, 15.78mm and 3.23mm at 10, 20, 30 and 40 percent respectively.
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