Abstract
The efficacy of Trichoderma suspension on the recovery of fusarium wilt infected eggplant was studied at Bangladesh Agricultural University Farm during July 2014 to April 2015. Suspension of Trichoderma asperellum CP (IPM 33) (5.8×107 CFU ml-1) was applied to rhizosphere soils of eggplants @ 0, 20 and 40 ml plant-1. Fusarium oxysporum f. sp. melongenae was inoculated to flowering and fruiting stages of healthy plants by soil drenching method 48 hrs before and after application of Trichoderma suspension. Observations were made on the severity and recovering of wilting. The eggplant variety BAU Begun 1 was found resistant to fusarium wilt while other two varieties BAU Begun 2 and Dohazari G showed susceptible reaction. Pre-inoculation application of Trichoderma @ 40 ml plant-1 significantly reduced the severity of the disease. The vulnerability to fusarium wilt was higher at flowering stage of eggplant. Thus, the experimental results have opened up a possibility of using Trichoderma suspension over conventional farming inputs for sustainable and organic production of eggplant.Int. J. Agril. Res. Innov. & Tech. 7 (1): 38-42, June, 2017
Highlights
Among the vegetables grown in Bangladesh, eggplant (Solanum melongena L.) is most important in terms of round the year availability, food value, taste, farmer’s income perspective and as an export item
Whole field was inoculated at the flowering stage and again at the fruiting stage following the application of Trichoderma suspension to 50% of plants plot-1 at first and just 48 hrs after inoculation of F. oxysporum f. sp. melongenae was done by soil drenching method and viceversa
The present study revealed that the application of 40 ml per plant Trichoderma suspension showed the less percent wilting of eggplants as compared to 20 ml, which is supported by the work of Nabi et al (2009) who applied IPM Lab biopesticide in controlling collar rot of eggplant, tomato and Indian spinach
Summary
Among the vegetables grown in Bangladesh, eggplant (Solanum melongena L.) is most important in terms of round the year availability, food value, taste, farmer’s income perspective and as an export item. In a subtropical country like Bangladesh, eggplant is grown all over the country on medium high land to high land in both Rabi and Kharif seasons. It is positioned the 2nd in acreage, production, yield, and in consumption next to potato. The most devastating disruption in sound eggplant production, usually farmers suffer, is the management of fusarium wilt caused by Fusarium oxysporum f. The fungus chokes the vascular system of plant and plant dies from water and nutritional deficiency, the fungus attacks mainly when the plants have grown up (Agrios, 2006)
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