Seasonal incidence of major insect pests and their correlation with weather parameters in cotton

Bhujade, D.R.; Zanwar, P. R.; Bokan, S.C.; Dahe, M.M.

doi:10.5958/0974-4576.2019.00015.x

Cited by 1 publication

(1 citation statement)

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“…Reported that both the lady bird beetle (Coccinella septempunctata) and the cabbage aphid (Brevicoryne brassicae) were visible from the 49 th SMW to the 8 th SMW, with the peak incidence occurring in the 5 th SMW (41.0 larva/plant) and 4 th SMW (1.0 larva/plant), respectively. As per Bhede (2018) [12] , syrphid populations peaked in the first SMW (5.75 /plant) and 52 nd SMW (3.55 /plant) in the years 2015-16 and 2016-17, respectively. Syrphids and lowest temperature had a strong inverse relationship during the first season and a substantial inverse relationship with aphids was seen during both seasons.…”

Section: Discussionmentioning

confidence: 68%

Incidence of major insect pests and its natural enemies of Cabbage (Brassica oleracea var. capitata) under Polyhouse conditions

SM,

Sridevi

et al. 2024

J. Entomol. Zool. Stud.

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The major insect pests of cabbage crop during rabi, 2021-22 were aphids, leaf webber, diamondback moth and tobacco caterpillar. Although the incidence of semilooper, painted bugs were noticed, it was low. The peak infestation of aphids was seen in last week of November (48 th SMW) while that of the lepidopteran pests (leaf webber, DBM and tobacco caterpillar) occurred in January (4 th , 4 th 2 nd SMW, respectively). The mean population of Coccinellids, syrphids and spiders were 0.45, 1.10 and 0.69 respectively under polyhouse conditions. Correlation studies revealed that aphids alone showed significant negative correlation with morning temperature and significant positive correlation with evening temperature while all the lepidopteran pests showed non-significant negative and positive correlations, respectively. All the three natural enemies (coccinellids, syrphids and spiders) showed significant negative correlation with morning temperature and significant positive correlation with evening temperature.

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Section: Discussionmentioning

confidence: 68%