Studies on host plant resistance to evaluate the tolerance/ susceptibility against cotton pests

Studies were carried out to determine natural resistance of cotton varieties against insect pests. Population of thrips reached above threshold levels from 1st week to 3rd week of July in all the strains/varieties (CRIS-120, CRIS126, CRIS-133, CRIS-134, CRIS-9 and NIAB- 78) and needs to be sprayed t...

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Veröffentlicht in:	Pakistan journal of biological sciences 2001-11, Vol.4 (12), p.1506-1508
Hauptverfasser:	Leghari, M.A, Kalroo, A.M, Leghari, A.B. (Central Cotton Research Inst., Sakrand (Pakistan))
Format:	Artikel
Sprache:	eng
Schlagworte:	AMRASCA DEVASTANS BEMISIA TABACI EARIAS INSULANA GOSSYPIUM HIRSUTUM HELICOVERPA ARMIGERA INSECTE NUISIBLE INSECTOS DANINOS PECTINOPHORA GOSSYPIELLA PEST INSECTS PEST RESISTANCE RESISTANCE AUX ORGANISMES NUISIBLES RESISTENCIA A LAS PLAGAS TETRANYCHUS URTICAE THRIPS TABACI VARIEDADES VARIETE VARIETIES
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Beschreibung
Zusammenfassung:	Studies were carried out to determine natural resistance of cotton varieties against insect pests. Population of thrips reached above threshold levels from 1st week to 3rd week of July in all the strains/varieties (CRIS-120, CRIS126, CRIS-133, CRIS-134, CRIS-9 and NIAB- 78) and needs to be sprayed to protect the crop from economic loss. CRIS- 134 showed more tolerance against bollworm damage followed by CRIS-133. Maximum seed cotton yield was obtained from CRIS-120, followed by NIAB-78 and CRIS-126 respectively. Regular pest scouting should be carried out in the field and when pest populations reach at threshold levels, the crop should be sprayed with appropriate pesticides accordingly.
ISSN:	1028-8880
DOI:	10.3923/pjbs.2001.1506.1508