Response of rice cultivars and insecticides against Rice stem borer (Scirpophaga incertulus) in Pakistan (Swat)
Paper Details
Response of rice cultivars and insecticides against Rice stem borer (Scirpophaga incertulus) in Pakistan (Swat)
Abstract
Rice is amongst the most vital food crops that provide an essential food for approximately half of the world’s population. Rice crops are disposed to both biotic and abiotic stresses. Biotic stresses contain insect pests, fungus and herbicide toxicity. This study was conducted at Agricultural Research Institute (North) Mingora Swat, Khyber Pakhtun Khwa (Pakistan) in 2014 to determine the toxicity of Karate (Lambda Cyhlothrin 2.5g/l), Lorsban (Chlorpyrifos 500g/l), Talstar (Bifentnthrin 100g/l), Lannate (Methomyl 225g/l). Curacron (Profenofos 500g/l) were applied to rice varieties (Oryza sativa), Basmati-385, JP-5, Fakhr-e-Malakand, Swat-1 and Dilrosh against rice stem borer, (Scirpophaga incertulas) and their effect on yield per hectare. In this study, the most resistant rice cultivar and effective insecticide against rice stem borer were investigated. Talstar Super resulted in to highest ranked in their efficacy against rice stem borer; as (3.7%) dead hearts while (7.5%) white hearts was recorded, which is significantly (P < 0.05) lower than control. Talstar with (52.71%) infestation was the most effective insecticide against rice stem borer followed by karate with (44.04%), Lorsbon (42.24%) and Lannate (41.70%). The lowest biological efficacy was recorded for Curacon (10.17%) significantly lower (P < 0.05) than the other tested varieties. The result also displayed the resistance of Swat-1, Basmiti-385 and Dilrosh to rice stem borer. This study made clear the Basmati-385 was the most susceptible variety against rice stem borer with lowest yield, JP-5 with (1688.3kg/ha) ranked first.
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