| Abstrakt: |
The experiment on insecticide evaluation against the Rice Gundhi bug was laid out at Heera Puri research field, Deen Dayal Upadhyaya Gorakhpur University, Gorakhpur, Uttar Pradesh, India in randomized Block Design with three replications and seven treatments including different newer insecticides and phytoextracts viz., imidacloprid 17.8% SL @ 300 ml/ha, NSKE 5% @ 25 l/ha, acetamiprid 20% SP @ 200 g/ha, Neem oil 2% @ 5 l/ha, Metarhizium anisopliae 1 x 109 cfu/ml @ 3 l/ha, thiamethoxam 25% WG @ 200 g/ha, and Untreated plot (Water). The number of bugs after 10 days of the second spray was significantly lower than the untreated plot. However, imidacloprid 17.8 SL @ 300 ml/ha was found superior to the rest of the insecticide treatments, as the lowest number of bugs was recorded by this treatment. The next best treatment was thiamethoxam 25% WG @ 200 g/ha, followed by acetamiprid 20% SP @ 200 g/ha. Neem oil 2% @ 5 l/ha was the least effective treatment. The benefit-cost ratio results revealed that the most cost-effective treatment was imidacloprid 17.8% SL @ 300 ml/ha, whereas the least economical treatment was NSKE 5% @ 25 l/ha. Imidacloprid 17.8 SL @ 300 ml/ha treatment recorded the highest B: C ratio and highest yield as compared to other treatments. [ABSTRACT FROM AUTHOR] |
