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Management of Thrips and Mites in Carnation using Biorationals and New Chemicals

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Title Management of Thrips and Mites in Carnation using Biorationals and New Chemicals
 
Creator Manju N. K.P.
 
Contributor R.S. Giraddi
 
Subject Agricultural Entomology
 
Description The present investigations were carried out under protected cultivation to study the
seasonal incidence of thrips and mites on carnation, screening of carnation varieties against
thrips and mites, to assess the effectiveness of biorationals and new chemicals for the
management of thrips and mites.
Seasonal incidence studies indicated that incidence of the thrips population on leaves
and flowers was at peak during April and lowest during December and July. There was
positive correlation between thrips population v/s temperature and relative humidity.
Among the varieties, Randez Vous, Liberty and Lisa were identified as the best
varieties by recording lowest thrips population, higher total number of flowers, good flowers,
diameter of flowers and number of branches/plant and also recorded lowest malformed,
unopened and discoloured flowers.
Among the biorationals evaluated Lecanicillium lecanii @ 2 g/l was an effective
treatment followed by Beauveria bassiana @ 2 g/l and NSKE @ 5%. With respect to mite, L.
lecanii @ 2 g/l was found to be significantly superior followed by NSKE @ 5% and garlic
chilly kerosene extract @ 0.5% + cow urine @ 5%.
Among the new chemicals, sequential spray of chlorfenapyr 10 SC followed fipronil 5
SC was found to be the best treatment against thrips followed by chlorfenapyr 10 SC ?
thiamethoxam 25 WG and diafenthiuron 25 WP - diafenthiuron 25 WP sprays. Similarly,
abamectin 1.9 EC - abamectin 1.9 EC sprays recorded significantly less number of mites
followed by diafenthiuron 25 WP - diafenthiuron 25 WP and fenazaquin 10 EC -
thiamethoxam 25 WG sprays.
 
Date 2016-11-22T19:16:13Z
2016-11-22T19:16:13Z
2013
 
Type Thesis
 
Identifier http://krishikosh.egranth.ac.in/handle/1/87135
 
Format application/pdf
 
Publisher UAS, Dharwad