Management Of Major Pests Research Articles

Influence of farming systems on management of major pests and disease of groundnut

A field experiment was conducted during the summer 2019 to manage significant pests and diseases of groundnut. Four farming methods were evaluated against Aphis craccivora, Scirtothrips dorsalis, Spodoptera litura andearly leaf spot (Cercospora arachidicola). Among the different farming methods, Natural farming (NF) (neemastra @ 625 lit/ha) significantly reduced the Aphis craccivora (3.92 aphids /plant) and Scirtothrips dorsalis (11.80%) at one week after spray followed by organic farming (OF) and a package of practice (POP). Similarly, S. litura (0.44 % leaf damage) infestation was significantly lower at two weeks after spray compared to other treatments. Botanical decoctions were found safer to Coccinella transversalis in natural farming plot. The experiment also evaluated the effective farming methods against early leaf spot of groundnut and among the different methods, the minimum per cent disease index (6.26) was recorded in POP (hexaconazole 5EC @ 500ml/ha) followed by OF (azadirachtin 10000 ppm @ 600ml/ha) (7.02) and NF (fermented buttermilk @ 12.50 lit/ha) (7.19). All the farming methods were statistically at par in recording pod yield however, the highest pod yield was recorded in POP (20.07 q/ha) followed by organic farming (19.50 q/ha). The present investigation has found natural farming to be an effective system against the management of pests and disease in groundnut.

Biorational management of major pests of brinjal

Field experiments were carried out in brinjal during summer and kharif, 2013 to evaluate the efficacy of Metarhizium anisopliae and Beauveria bassiana (talc formulation @ 5 gm/L), M. anisopliae and B. bassiana (potato dextrose broth @107 spores/ml), Bt formulation @ 1 ml/L, spinosad 45 SC @ 0.4 ml/L, Azadirachtin 1% @ 2 ml/L and Malathion 50 EC @ 2 ml/L against Leucinodes orbonalis, Epilachna vigintioctopunctata, Antoba olivacea and Selepa docilis. Spinosad 45 SC was found to be effective in reducing shoot and fruit infestation by L. orbonalis. Azadirachtin 1% was found to be most effective in controlling leaf infestation by E. vigintioctopunctata. Bt formulation was highly effective for early larval instars of A. olivacea. However, for later instars, malathion 50 EC was found to be effective. Azadirachtin 1% was found to be highly effective against S. docilis during summer and kharif.