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 |
An experiment was conducted to assess the bio-efficacy of Carbofuran 3% CG against whitefly, Bemisia tabaci (Gennadius) on tomato during late kharif season of 2013-14 at Agricultural Research Station, Hagari near Ballari in Karnataka. The treatments were imposed at three different test doses along with market standard (Carbofuran 3%G), standard check (Thiamethoxam 25% WG) and untreated control. Phyto-toxicity evaluation was also done for the new chemical formulation. The results showed that, 3 days after treatment imposition, Carbofuran 3% CG at all the three doses found superior by recording lower whitefly population (2.58 to 2.80 per three leaves per plant). Market standard (Carbofuran 3% G) and standard check (Thiamethoxam 25% WG) recorded higher whitefly population (3.25 and 3.03 per three leaves per plant respectively) when compared to all the test doses. Similar trend were observed during seven and ten days after imposition of treatments. Correspondingly, Carbfouran 3% CG @ 50 kgs/ha recorded higher yield of 68.3 q/ha and its lower dosages at 40 kg/ha and 30 kg/ha recorded 67.7 q/ha and 63.4 q/ha respectively. Observations revealed that, there was no significant difference in natural enemy population between any of the treatments. There was no record of any phyto-toxicity symptoms on tomato plants with various dosages of Carbofuran 3% CG. From the experiment, it was confirmed that Carbofuran 3 % CG is effective in the management of whitefly in tomato without hindering natural enemy population and causing phyto-toxicity effect.
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