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 |
Cabbage (Brassica oleracea L. var capitata) is one of the most important cruciferous green leaf vegetables grown extensively in tropical and temperate regions of the world. Cabbage crop is attacked by a number of insect pests. Of these, diamond back moth, Plutella xylostella has become serious pest from sowing to harvest. To mitigate the losses, farmers use large quantities of pesticides. Indiscriminate use of pesticides has led to many problems like insecticide resistance, resurgence and residues. Keeping this in view, investigations were undertaken to test the commercially available six ecofriendly pesticides against P. xylostella. The pooled mean results of these sprays are presented as follows. Among the different eco-friendly insecticides evaluated against P. xylostella, the Refresh @750 ml/ha and Signature @750 ml/ha closely performed well with the least leaf damage percentage of 6.9 and 8.4 percentage, respectively which is followed by Dichlorvos 76 SL @500 ml/ha with 10.53 percentage leaf damage. The three insecticides (Refresh, Signature, Dichlorvos) were statistically on par. Bio Dose Magnum @ 750 ml/ha proved the least effective one among eco-friendly insecticides recording the mean leaf damage percentage of 13.59. However all the eco-friendly insecticides tested exhibited statistically better than the untreated control (34.55% LD). The highest yield of 24.07 t/ha obtained from the Refresh treated plots followed by Signature (23.53 t/ha). The cost-benefit ratios varied from 1:5.8 to 1:24.4 in different insecticidal treatments. Dichlorvos gave the maximum monetary benefit with highest cost-benefit ratio (1:24.4) followed by Refresh with a recorded monetary cost-benefit ratio of 1:18.5, respectively.
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