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Role of organics and Indigenous components against Spodoptera litura (Fab.) in Groundnut and Soybean

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Title Role of organics and Indigenous components against Spodoptera litura (Fab.) in Groundnut and Soybean
 
Creator S.M.Bharath
 
Contributor R.K.Patil
 
Subject Agricultural Entamology
 
Description Role of organics and indigenous components for the management of Spodoptera litura
(F.) in groundnut and soybean ecosystem were studied during 2003-04 at Main Agriculture
Research Station, UAS, Dharwad. In groundnut ecosystem, organic treatment recorded
significantly less number of aphids (8.55/cm twig), thrips (3.57/leaflet), leaf hoppers
(1.72/sweep) and S. litura (2.40 / m.row) compared to integrated nutrient management and
inorganic treatment. Similarly in soybean ecosystem also significantly less number of thrips
(4.40/leaflet), leaf hoppers (2.90/sweep), S. litura (3.12/m.row) and T. orchalcea (1.88/m.row)
were observed in organic treatment compared to INM and RPP. Organically treated groundnut
spared the predators by recording significantly higher number of coccinellid beetles
(3.71/plant) followed by INM (2.61/plant) and RPP (1.50/plant). Syrphids population
(1.11 maggot / m.row) and N. rileyi incidence (1.09 mycosed/ m. row) was found significantly
higher in organic treatment. Whereas, statistically at par in INM and RPP.
Biodynamic pesticides involving combination of cow urine + NSKE (89.83%) and cow
urine + C. gigentia (69.33%) caused higher mortality of third instar larvae than the individual
treatment of NSKE (76.33%) and C. gigentia (12.67%) in in vitro. Cow urine alone recorded
no mortality even at 72 hr of treatment. The treatments cow urine + NSKE (35.27%), cow
urine + V. negundo (46.25%) and cow urine + A. mexicana (50.30%) exhibited higher
antifeedant property than their individual application. Panchagavya + NSKE (80.17 %),
panchagavya + V. negundo (70.17%) and panchagavya + A. vasica (50.30%) recorded
higher mortality of third instar larvae than the individual application of NSKE (60.17%), V.
negundo (50.17%) and A. vasica (40.18%). Sole treatment of panchagavya recorded only
10.67% mortality at 72 hr of treatment. Among different combinations, panchagavya + NSKE
(30.14%) and panchagavya + V. negundo (41.54%) recorded higher antifeedant property at
48 hr of treatment than sole application of NSKE (36.67%) and V. negundo (44.56%).
Field performance of panchagavya, cow urine alone and in combination with plant
products against S. litura in groundnut and soybean ecosystem vividly showed that, the
treatment panchagavya + NSKE is no way inferior to quinalphos (0.05%) spray which
recorded significantly less number of larvae (3.14 and 5.87/m row) in groundnut and soybean,
respectively and ultimately registered highest yield in groundnut (27.59q/ha) as well as in
soybean (17.69 q/ha).
 
Date 2016-09-14T09:24:03Z
2016-09-14T09:24:03Z
2005
 
Identifier http://krishikosh.egranth.ac.in/handle/1/76514
 
Format application/pdf
 
Publisher UAS, Dharwad