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 |
Insect-pests with biotic and abiotic factors play a major role in low production and productivity of black gram in India. The insect-pests like white fly, Bemisia tabaci (Genn.), jassid, Empoasca kerri Pruthi, bihar hairy caterpillar, Spilosoma obliqua Walker and tobacco caterpillar, Spodoptera litura (F.) were recorded as major pests. The high population of 18.50white flies/cage/plant, 36.80jassid/cage/plant, 12.60bihar hairy caterpillar/plant and 10.40tabacco caterpillar/plant were observed during 39th standard week. Temperature (maximum & minimum) and rainfall showed non-significant positive correlation and relative humidity showed non- significant negative with the population of white fly, jassids and bihar hairy caterpillar. The highest population of cocccinellids 2.00Coccinella septempunctata L. adult/plant and 1.20 Cheilomenes sexmaculata (F.) adult/plant were observed during 41th & 39th standard week respectively. The maximum temperature showed non-significant positive correlation where as minimum temperature and rainfall had non-significant negative correlation while relative humidity had significant negative correlation with the population of coccinellids.
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