National Academy of Agricultural Sciences (NAAS)
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PRINT ISSN : 2319-7692
Online ISSN : 2319-7706 Issues : 12 per year Publisher : Excellent Publishers Email : editorijcmas@gmail.com / submit@ijcmas.com Editor-in-chief: Dr.M.Prakash Index Copernicus ICV 2018: 95.39 NAAS RATING 2020: 5.38 |
An field experiment was conducted in two consecutive year (Spring 2015 and 2016) at NawabGanj Farm of C. S. Azad University of Agriculture and Technology, Kanpur 208002 (U.P.). The Shoot fly (egg/plants) on maize appeared in both year (Spring 2015 and 2016) from 7th to 13th standard week and the highest egg laying was found in 11th S.W. (2.83egg/plant) in above years. Stem borer, Chilo partellus (Swinhoe) dead heart was observed from 8th to 16th standard week after this period there was no newly dead heart was found till the crop harvested. Three species of coccinellids viz., Coccinella septempunctata (Linnaeus), Cheilomenes sexmaculata (Fab.), Coccinella tranversalis (Fab.) and Brumoides suturalis (Fab.) were found commonly associated with sucking pests of maize crop. The population was recorded from 7th to 19th S.W. Spiders are the predominant generalised predators found feeding on variety of sucking as well as lepidopteron pests in maize ecosystem. It was observed that the spiders were abundant between 8th to 20th S.W., its peak population observed during 15th and 16th standard week that coincided to follow with high prey population i.e. stem borer and aphids.
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