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 Impact of intercropping on predators of insect pests of pigeonpea in rainy and post rainy season.

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Title  Impact of intercropping on predators of insect pests of pigeonpea in rainy and post rainy season.
 Impact of intercropping on predators of insect pests of pigeonpea in rainy and post rainy season.
 
Creator ICAR_CRIDA
 
Subject cultural practices, ecosystem diversity, natural enemies, agronomical evaluation, gross margin
 
Description Not Available
Castor (Ricinus communis L.) (Malpighiales: Euphorbiaceae) is an important non—edible oilseed cash
crop grown across many parts of arid and semi—arid regions in India. Castor is grown for its beans,
which yield non—edible oil mainly used in the manufacturing of paints, lubricants, soaps, hydraulic brake
fluids, polymers, and perfumery products, among others; there are several derivatives of castor oil that
are used in a variety of industries. Fluctuations in productivity levels of castor are experienced for two
main reasons: first, it is grown as a rain—fed crop, and as a long—duration crop is subject to the vagaries
of the monsoon; second, it attracts a large number of pests including the semilooper, Achaea janata L.
(Noctuidae: Lepidoptera), and the shoot and capsule borer, Conogethes punctiferalis Guenee
(Crambidae: Lepidoptera). Achaea janata and C. punctiferalis occur during early and late stages of crop
growth, respectively (Singh 1987). Incidence of A. janata is generally noticed from vegetative to early
reproductive phase of the crop (Tahiliani 1985; Basappa and Lingappa 2001). A peak level of infestation
of A. janata causes excessive defoliation affecting photosynthesis. Later, the larvae eat away the tender
capsules of primary and secondary spikes. It is estimated that castor yields are reduced by 30–50% due
to A. janata alone. Incidence of C. punctiferalis is commonly noticed in the later stage of crop growth,
especially secondary and tertiary spike orders. Larvae web the tender capsules, bore into them, and eat
away the kernel. The borer attacks various plant parts such as the shoots, inflorescences, and capsules,
causing considerable yield losses (Singh et al. 1992).
Not Available
 
Date 2020-02-25T09:21:42Z
2020-02-25T09:21:42Z
2003
 
Type Technical Report
 
Identifier Not Available
Not Available
http://krishi.icar.gov.in/jspui/handle/123456789/32943
 
Language English
 
Relation Not Available;
 
Publisher Srinivasa Rao, M., Dharma Reddy, K. and Singh, T.V.K.