Evaluation of new insecticides against rice brown plant hopper

Autor:	V. Ravindera Naik, G. Sivaprasad, M. Parimal Kumar, R. Balamuralidhar Naik, Muthukonda Venkatakrishnan Shankar, D. Bhadru, K. Sumalini
Rok vydání:	2018
Předmět:	education.field_of_study Ecology Kharif crop Population Randomized block design Biology Toxicology chemistry.chemical_compound chemistry Etofenprox Imidacloprid Insect Science Grain yield Monocrotophos education Agronomy and Crop Science Ecology Evolution Behavior and Systematics Acephate
Zdroj:	Indian Journal of Entomology. 80:1300
ISSN:	0974-8172 0367-8288
Popis:	Evaluation of six insecticides viz., ethiprole 40 + imidacloprid 40 WG, etofenprox 10 EC, buprofezin 25 SC, pymetrozine 50 WG, acephate 75 SP and monocrotophos 36 SL were evaluated against rice brown plant hopper BPH. The BPH population was counted on 20 randomly selected hills before spray at 1, 3, 7 and 10 days after spray. The experiment was conducted during kharif 2014 and 2015 at the Agricultural Research Station, Kampasagar, laid out in Randomized Block Design with three replications. All the insecticides significantly reduced the BPH. The BPH population varied from 114.0 to 156.6 and 133.4 to 176.6/20 hills during kharif 2014 and 2015 at one day prior to spray. The population was significantly lower with pymetrozine 50 WG @ 250 g/ha, followed by ethiprole 40 + imidacloprid 40 W.G @ 125 g/ha, etofenprox 10 EC @ 750 ml/ha, acephate 75 SP @ 667g/ha, monocrotophos 36 SL @ 1390 ml/ha and buprofezin 25 SC @ 825 ml/ha at all the counting days of after spray in both 2014 and 2015. The maximum reduction of population was found with pymetrozine 50 WG. The highest grain yield was obtained with pymetrozine 50 WG @ 250 g/ha in kharif 2014 and 2015.
Databáze:	OpenAIRE
Externí odkaz:	https://explore.openaire.eu/search/publication?articleId=doi_________::6292d20c9c329bf81dc2ce3098101307 https://doi.org/10.5958/0974-8172.2018.00309.7 Zobrazit plný text záznamu