BIONOMICS OF SORGHUM EARHEAD BUG, CALOCORIS ANGUSTATUS LETHIERRY

N. NATARAJAN AND P. C. SUNDARABABU

doi:https://doi.org/10.29321/MAJ.10.A02166

Madras Agricultural Journal

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BIONOMICS OF SORGHUM EARHEAD BUG, CALOCORIS ANGUSTATUS LETHIERRY

Author: N. NATARAJAN AND P. C. SUNDARABABU,

p-ISSN: 0024-9602, e-ISSN:2582-5321, Vol: 74, Issue: apr-may,

DOI:https://doi.org/10.29321/MAJ.10.A02166

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Abstract

iology of earhead bug Calocoris angustatus Lethierry was studied during July to August 1984 and April to May 1985. The preoviposition period, oviposition period, day of highest egg laying, total number of eggs laid, egg period. Total lite Period an sex ratio during the first and second seasons being 2.70, 11, 7th day, 129, 10, 6.63, 33.06. 1,275 and 3.17. 6. 5th day 99.09 5,57, 24.37, 1: 1.50 respectively. The females lived longer than males irrespective of the rearing seasons.

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