International Journal of Plant Protection

K. Swathi Yadav ¹, H. V. Pandya ¹, S. M. Patel ¹, S. D. Patel ¹, M. M. Saiyad ¹

Affiliations
1 Department of Entomology, ASPEE College of Horticulture and Forestry, Navsari Agricultural University, NAVSARI (GUJARAT), IN

Abstract

Investigations were carried out on population dynamics of major insect pests that attack cowpea [Vigna ungiculata (L.) Walp.] at Regional Horticultural Research Station, Navsari Agricultural University, Navsari during 2012-13. The results revealed that aphid and jassid population started from 3^rd week of October, reached a peak of 3.4 aphid index and 3.8 jassids/ leaf by 1^st week of December whereas whitefly population started from 3^rd week of October and reached to a peak level of 3.7 whiteflies per leaf in 4^th week of November. Cowpea pod borer population started in 2^nd week of November and reached to a peak level (2.8 larvae/plant) in 1^st week of December and thereafter, decreased gradually. Spotted pod borer population started from 1^st week of November coinciding with the flower initiation and reached to a peak of 2.8 larvae per leaf in 1st week of December. Among various weather parameters, evening relative humidity showed a significantly negative influence on population of almost all pests and minimum temperature showed a significantly negative correlation with aphid, cowpea pod borer and ladybird beetle population.

Keywords

Cowpea, Population Dynamics, Aphid, jassid, Whitefly, Pod Borer.

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S. G. Parmar ¹, M. M. Naik ¹, H. V. Pandya ², N. K. Rathod ¹, S. D. Patel ¹, P. P. Dave ¹, M. M. Saiyad ¹

Affiliations
1 Department of Entomology, N.M. College of Agriculture, Navsari Agricultural University, NAVSARI (GUJARAT), IN
2 Department of Entomology, ASPEE College of Horticulture and Forestry, Navsari Agricultural University, NAVSARI (GUJARAT), IN

Abstract

An investigation was carried out on bio-efficacy of newer insecticides against pest complex of blackgram [Vigna mungo (L.)] at Navsari Agricultural University, Navsari, Gujarat during Kharif season. Among the tested eleven insecticide, the higher effectiveness was observed with the application of clothianidin 50 per cent WDG (0.003%) against whitefly, jassid and aphid. While, spinosad 2.5 SC (0.002%) was the most effective against gram pod borer and spotted pod borer.

Keywords

Bio Efficacy, Insecticides, Blackgram, Whitefly, Jassid, Aphid, Gram Pod Borer, Spotted Pod Borer.

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