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Role of biorationals in the management of diamond black moth, plutella xylostella L. in cabbage ecosystem

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Title Role of biorationals in the management of diamond black moth, plutella xylostella L. in cabbage ecosystem
 
Creator Neelakanth I.Sajjan
 
Contributor R.K.Patil
 
Subject Agricultural Entamology
 
Description Investigations were undertaken to evaluate different botanical sprays,
entomopathogenic fungi, insect growth regulators and new molecules against diamondback
moth in the laboratory as well as in field at Department of Entomology, Agricultural College,
Dharwad.
Among the plant products and panchgavya sprays evaluated under laboratory
condition, panchagavya 5% + NSKE 5% (98.89%), panchagavya 3% + NSKE 5% (95.45%)
and cow urine 10% + NSKE 10% (95.45%) excelled over other combination treatments in
causing higher larval mortality. Under field condition spinosad recorded significantly least
population of 0.33 larvae/plant and yield of 33.22 t /ha of marketable heads. It was followed
by panchagavya 5% + NSKE 5% and cow urine 10% + NSKE 10% treatment recorded least
population of 0.93 and 1.00 larvae /plant with higher marketable heads of 30.55 and 29.63 t
/ha.
Among the entomopathogens under laboratory condition cow urine 10% + NSKE 5%
+ M. anisopliae (OF) and cow urine 10% + NSKE 5% + M. anisopliae (WP) recorded 100
and 98.89 per cent mortality respectively which were on par with each other and also
chemical spinosad @ 0.1 ml/l (100%) after 5 days of treatment than the individual application
of either of the treatments. Evaluation of entomopathogens against diamondback moth in
cabbage ecosystem was carried out under field condition. The combination of cow urine
10% + NSKE 5% + M. anisopliae 2 x108 conidia/ml (OF) (0.27 larvae/plant) and spinosad
@ 0.1 ml/l (0.33 larvae/plant) were found at par with each other and significantly superior
over all other treatments by recording 32.18 and 33.09 t/ha of marketable heads. The next
best treatment proved to be cow urine 10% + NSKE 5% with M. anisopliae 2 x108 conidia/ml
(WP) (0.67 larvae/plant) which recorded 28.36 t/ha marketable heads.
Among the IGRs and new molecules under laboratory condition spinosad is highly
effective in recording cent per cent mortality of larvae at the end of 5 days. It was statistically
on par with novaluron, chlorpyriphos, Econeemplus, Btk, emamectin benzoate, Biotarcel 10
g/l and Larvocel 5 g/l by recording 86.99 to 98.89 per cent mortality. Under field condition
all treatments viz., spinosad, novaluron, emamectin benzoate, Btk, Econeemplus, Larvocel
were found statistically at par with each other by recording significantly less population,
which ranged between 0.13 to 0.47 larvae/plant. However highest marketable heads of 32.53
t/ha was recorded with spinosad followed by novaluron (28.47 t/ha).
 
Date 2016-09-14T10:25:58Z
2016-09-14T10:25:58Z
2006
 
Type Thesis
 
Identifier http://krishikosh.egranth.ac.in/handle/1/76569
 
Format application/pdf
 
Publisher UAS, Dharwad