Influence of vermicomposting on crop protection and yield of Tomato cultivation threatened by pests
Sujatha D, Padmalatha C
Bacterial spot disease, Pests ,Tomato, Vermicompost
The use of chemicals for disease management in tomato cultivar may leave antimicrobial’s in the fruits which may lead to drug resistance bacterial strain. Also the use of pesticides to control pest in the fruit plant tomato may leave harmful residues . The important causative agent for the bacterial disease in tomato cultivar is Xanthomonas compestris and the most threatening pest is aphids[mealy bugs]. In order to prevent and reduce this bacterial disease and aphid infestation vermicompost prepared using different vermibed with leaf litters containing leaves of Azadirachta indica, Lantana camara , Ficus religiosa and assorted leaf litter and applied in tomato cultivars so as to minimize the use of chemical biocides. In the vermicompost prepared using neem leaves (T4) the inhibition effect on Xanthomonas compestris was28.36 0.97 and it was maximum (P<0.05). But it was less in vermicompost prepared using assorted leaf litter (22.49 1.06), vermicomposted ficus (17.46 1.23) and Lantana vermicompost (10.63 0.87). In the experiments it was observed that the vermicomposted neem leaf was very effective in preventing the damage caused by Xanthomonas compestris pathogen. Among all the treatments treatment neem based vermicompost showed the highest yield (16.34 4.04t/ha followed by treatment with Ficus compost (14.24 2.36 t/ha). From the results it was observed that the vermicompost extracts were very effective in preventing the damage caused by aphids to tomato plants. The number of aphids were suppressed significantly (P0.05) by all three vermicomposts solution concentration with high suppression by 20% vermiwash than 10% extract and 5% extract. A dose dependent increment was observed in the mean dry weight of shoot and leaf area of tomato plants infested with mealy bugs and aphids when they were treated with different concentrations of vermicompost extract .
Article Details
Unique Paper ID: 152320

Publication Volume & Issue: Volume 8, Issue 2

Page(s): 907 - 911
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