Gram pod borer (Helicoverpa armigera) is the most serious pest responsible for higher yield losses in chickpea, cotton and red gram in India. Helicoverpa armigera is the major pest of many crops and considered as the main pest of chickpea. No plant seems to be strong enough to avoid attack of Helicoverpa armigera in affected field. Larvae of Helicoverpa armigera (Hubner) were collected from the nearby fields of chickpea. Present study was conducted to determine the susceptibility of Helicoverpa armigera (Hubner) for indigenous products and insecticide at various treatment. Seven treatments and five replication in indigenous products along with four treatment and five replication were taken up for the experiments. The data collected was analyzed using CRD design. Mortality of third instar Helicoverpa armigera (Hubner) was evalatued using tobacco leaf extract 10 per cent, Neem seed kernel extract 10 per cent, Neem leaf extract 10 per cent, cow urine 10 per cent, cow dung 10per cent and cow urine + cow dung 5 per cent and plain water as control. The result revealed that T 1 = tobacco leaf extract 10 per cent gave minimum mortality (7.37%) and T 6 = Cow urine + cow dung 5 per cent gave maximum mortality (26.32%) third instar larvae Helicoverpa armigera (Hubner) and Mortality of third instar of Helicoverpa armigera was evaluated using Quinolphos 0.01 per cent, Cypermethrin 0.01 per cent and Chlorpyrifos 0.01 per cent and plain water as control. The results revealed that T 2 = Cypermethrin gave minimum mortality (48.91%) and T 3 = Chlorpyrifos gave maximum mortality (77.66) third instar larvae of Helicoverpa armigera. How to view point the article : Danish, Mohd., Simon, Sobita and Khan, Hadi Husain (2016). Effect of ecofriendly indigenous products with chemical insecticides on mortality percentage of 3 rd instar larvae of Helicoverpa armigera (Hubner).
An attempts has been made to study the effects of insecticides i.e. 0.05 per cent aqueous solution of dimethoate and Neemarin, on the biology of Pieris brassicae (Linn.) at 25±1ºC and 70±10 per cent relative humidity through life table methods. Survivorship and Expectancy of the life was greatest in the beginning of the age and decreased gradually with the advancement of the age in the all treatment including control. The number of eggs was found less in deltamethrin (192 eggs/female/generation) as compared to neemarin (207 eggs/female/generation), and dimethoate (214 eggs/ female/generation) while it was found 281 eggs/female/generation in the control. The net reproductive rate (Ro) was also reduced with the treatment of the insecticide. Kvalues of P. brassicae was lowest on Neemarin treatment. The peak of k-value was found on Pre-pupal stage followed by Ist instar stage. It showed that Pre-pupal stage was the most susceptible stage on all treatments and non treated control .How to view point the article : Khan, Hadi Husain, Ansari, M. Shafiq, Hasan, Wajid, Chauhan, Sumit Kumar and Danish, Mohd. (2016). Effects of dimethoate and neemarin insecticides on the biology of Pieris brassicae (Linn.) on cabbage. Internat. J. Plant Protec., 9(1) : 283-291.
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