volume 28 issue 3 (september 2008) : 210 - 212
CHEMICAL CONTROL OF LINSEED GALL MIDGE (DASYNEURA LINI BARNES) IN LINSEED (LINUM USITATISSIMUM L.)
1Punjab Agricultural University,
Regional Reserch Station, Gurdaspur - 143521, India.
ABSTRACT
Five insecticides viz., Chlorpyriphos 20 EC, Fenvalerate 20 EC, Monocrotophos 36 SL and Endosulfan 35 EC @ were evaluated against gall midge Dasyneeura lini Barnes on linseed cv 2023, during rabi 1998-99 and 1999-2000. Fenvalerate was highly effective for the control of gall midge, with highest grain yeild and maximum cost: benefit. Its half dose also recorded lower incidence with comparatively higher grain yeild and cost : benefit which was on par with Monocroptophos, Chlorpyriphos and Endosulfan 0.45, 0.25, 0.35 kg. a.i./ha respectively. The above treatments resulted in significant reduction of gall midge incidence (7.58 to 28.50%) as compared to 47.48% in untreated plots
KEYWORDS
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