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Author Dhanik L. Mandal |
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Refine your searchEvaluation of Insecticides Against Plutella Xylostella L., Pieris Brassicae L. and Brevicoryne Brassicae L. on March-May Cauliflower in Ars, Pakhribas. / Ajaya S. R. Bajracharya ; Sharmila Piya ; RN Chaudhary ; Dhanik L. Mandal
in Proceedigs of the Eighth National Horticulture Seminar on Horticulture Development Towards the Pace of National Economic Growth, Khumaltar, Lalitpur and Kirtipur, Kathmandu, 18-20 March 2013 (5-7 Chaitra 2069) / Nepal Horticulture Society
Title : Evaluation of Insecticides Against Plutella Xylostella L., Pieris Brassicae L. and Brevicoryne Brassicae L. on March-May Cauliflower in Ars, Pakhribas. Material Type: printed text Authors: Ajaya S. R. Bajracharya, Author ; Sharmila Piya, Author ; RN Chaudhary, Author ; Dhanik L. Mandal, Author Pagination: 31-34 p. Languages : English (eng) Keywords: DBM, Cabbage butterfly, aphid Abstract: Effectiveness of four botanicals and four chemical insecticides for the control of Diamond back moth
(Plutella xylostella L.), Cabbage butterfly (Pieris brassicae L.) and Cabbage aphid (Brevicoryne
brassicae) on March-May cauliflower w~s evaluated at ARS, Pakhribas (1750 masl) during 2011 and
2012. Plants of" Snow Crown" variety of cauliflower were sprayed twice fortnightly after 20 days of
planting in the main field with Commercial azadirachtin formulation (0.003 %), Aqueous Melia
azedarach leaf extract, Aqueous tobacco extract + soap, Aqueous solution of Acorus calamus rhizome
powder, Cypermethrin 0.025%, Malathion 0.05%, Endosulfan 0.15% and Dichlorvos 0.075%. Each
treatment was replicated four times along with control. Pest. scoring was done twice after spraying.
Endosulfan 0.15%, Malathion 0.05% and Aqueous tobacco extract + soap were found superior among
all the insecticides to control the Diamond back moth. All four chemical insecticides including
Commercial azadirachtin formulation (0.003 %) and Aqueous tobacco extract + soap were equally
effective in controlling Cabbage butterfly. Aqueous Melia azedarach leaf extract was found ineffective
to control both Diamond back moth and Cabbage butterfly during both years. All the botanicals as well
as chemical insecticides were significantly effective in reducing Cabbage aphid population; however,
Endosulfan 0.15% and Aqueous tobacco extract+ soap were superior. Endosulfan treated plots yielded
the highest biomass of more than 22.25 kg in both the years.Link for e-copy: http://elibrary.narc.gov.np/?r=1558 Evaluation of Insecticides Against Plutella Xylostella L., Pieris Brassicae L. and Brevicoryne Brassicae L. on March-May Cauliflower in Ars, Pakhribas. [printed text] / Ajaya S. R. Bajracharya, Author ; Sharmila Piya, Author ; RN Chaudhary, Author ; Dhanik L. Mandal, Author . - [s.d.] . - 31-34 p.
in Proceedigs of the Eighth National Horticulture Seminar on Horticulture Development Towards the Pace of National Economic Growth, Khumaltar, Lalitpur and Kirtipur, Kathmandu, 18-20 March 2013 (5-7 Chaitra 2069) / Nepal Horticulture Society
Languages : English (eng)
Keywords: DBM, Cabbage butterfly, aphid Abstract: Effectiveness of four botanicals and four chemical insecticides for the control of Diamond back moth
(Plutella xylostella L.), Cabbage butterfly (Pieris brassicae L.) and Cabbage aphid (Brevicoryne
brassicae) on March-May cauliflower w~s evaluated at ARS, Pakhribas (1750 masl) during 2011 and
2012. Plants of" Snow Crown" variety of cauliflower were sprayed twice fortnightly after 20 days of
planting in the main field with Commercial azadirachtin formulation (0.003 %), Aqueous Melia
azedarach leaf extract, Aqueous tobacco extract + soap, Aqueous solution of Acorus calamus rhizome
powder, Cypermethrin 0.025%, Malathion 0.05%, Endosulfan 0.15% and Dichlorvos 0.075%. Each
treatment was replicated four times along with control. Pest. scoring was done twice after spraying.
Endosulfan 0.15%, Malathion 0.05% and Aqueous tobacco extract + soap were found superior among
all the insecticides to control the Diamond back moth. All four chemical insecticides including
Commercial azadirachtin formulation (0.003 %) and Aqueous tobacco extract + soap were equally
effective in controlling Cabbage butterfly. Aqueous Melia azedarach leaf extract was found ineffective
to control both Diamond back moth and Cabbage butterfly during both years. All the botanicals as well
as chemical insecticides were significantly effective in reducing Cabbage aphid population; however,
Endosulfan 0.15% and Aqueous tobacco extract+ soap were superior. Endosulfan treated plots yielded
the highest biomass of more than 22.25 kg in both the years.Link for e-copy: http://elibrary.narc.gov.np/?r=1558 E-copies
http://nkcs.org.np/narc/dl/?r=1558URL
in Advancing horticultural research for development. Proceedings of the 7th National Horticulture Seminar , Khumaltar, Lalitpur, 12-14 June 2011 (Jestha 29-31, 2068) / Paudyal, K.P.
Title : Study on Efficacy of v Arlo Us Insecticides and Botanicals Against Insect Pests (Plutel/A Xylostel/A L., Pieris B!'Assicae L. and Brevicoryne Brassicae L.) of Off-Season Cabbage Production in the Eastern Hills of Nepal Material Type: printed text Authors: Ajaya S. R. Bajracharya, Author ; Sharmila Piya, Author ; Keshab Ghimire, Author ; Dhanik L. Mandal, Author ; Shiva N. Mehta, Author Pagination: 131-135 p. Languages : English (eng) Keywords: DBM. Cabbage butterfly, aphid Abstract: Farmers of the eastern hills grow cabbage during off-season (April-October) period to the plains
for higher market prices but production during this period is risky with the potential losses to
insect pests: cabbage butterfly (Pieris brassicae L.), diamond back moths (Piutella xylostella L.)
and aphid (Brevicoryne brassicae L.). Considering this fact, an experiment in RCBD with three
replications was conducted to identify suitable chemical and botanical insecticides against cabbage
pests: diamond back moth (Piutella xylostella L.). cabbage butterfly (Pieris brassicae L.) and aphid
(Brevicoryne brassicae L.) at ARS, Pakhribas (1750 mas/) during 2008 and 2009 March-May
production with variety, "Green Coronet". Treatments included were Commercial azadirachtin
formulation (0.003 ·%}, Aqueous Melia azedarach leaf extract, Aqueous tobacco extract + soap,
Aqueous solution Acorus calamus rhizome powder/Deltamethrin 0.003%, Cypermethrin 0.025%,
Malathion 0.05%, Endosulfan 0.15%, Dichlorvos 0.075%, combination of botanicals and control.
The result showed that diamond back moth had developed resistance to Cypermethrin 0.025% due
to its use since a long time in vegetable cultivation. Melia azedarach leaf extract and Acarus
calamus rhizome extract are ineffective in controlling insect pests of cabbage. Application of either
of commercial azadirachtinformu/ation (0.003 %), Aqueous tobacco extract+ soap, Deltamethrin
0.003%, Malathion 0.05%, Endosulfan 0./5% and Dichlorvos 0.075% twice fortnightly: two
weeks after transplanting cabbage seedling provide sufficient protection from diamond back moth,
cabbage butterfly and aphid Alternate use of botanicals (Azadirachtin and tobacco) with chemical
pesticides (Deltamethrin, Endosulfan, Malathion and Dichlorovos) could be a better option to
reduce selection pressure on DBM larvae.Link for e-copy: http://elibrary.narc.gov.np/?r=1654 Study on Efficacy of v Arlo Us Insecticides and Botanicals Against Insect Pests (Plutel/A Xylostel/A L., Pieris B!'Assicae L. and Brevicoryne Brassicae L.) of Off-Season Cabbage Production in the Eastern Hills of Nepal [printed text] / Ajaya S. R. Bajracharya, Author ; Sharmila Piya, Author ; Keshab Ghimire, Author ; Dhanik L. Mandal, Author ; Shiva N. Mehta, Author . - [s.d.] . - 131-135 p.
in Advancing horticultural research for development. Proceedings of the 7th National Horticulture Seminar , Khumaltar, Lalitpur, 12-14 June 2011 (Jestha 29-31, 2068) / Paudyal, K.P.
Languages : English (eng)
Keywords: DBM. Cabbage butterfly, aphid Abstract: Farmers of the eastern hills grow cabbage during off-season (April-October) period to the plains
for higher market prices but production during this period is risky with the potential losses to
insect pests: cabbage butterfly (Pieris brassicae L.), diamond back moths (Piutella xylostella L.)
and aphid (Brevicoryne brassicae L.). Considering this fact, an experiment in RCBD with three
replications was conducted to identify suitable chemical and botanical insecticides against cabbage
pests: diamond back moth (Piutella xylostella L.). cabbage butterfly (Pieris brassicae L.) and aphid
(Brevicoryne brassicae L.) at ARS, Pakhribas (1750 mas/) during 2008 and 2009 March-May
production with variety, "Green Coronet". Treatments included were Commercial azadirachtin
formulation (0.003 ·%}, Aqueous Melia azedarach leaf extract, Aqueous tobacco extract + soap,
Aqueous solution Acorus calamus rhizome powder/Deltamethrin 0.003%, Cypermethrin 0.025%,
Malathion 0.05%, Endosulfan 0.15%, Dichlorvos 0.075%, combination of botanicals and control.
The result showed that diamond back moth had developed resistance to Cypermethrin 0.025% due
to its use since a long time in vegetable cultivation. Melia azedarach leaf extract and Acarus
calamus rhizome extract are ineffective in controlling insect pests of cabbage. Application of either
of commercial azadirachtinformu/ation (0.003 %), Aqueous tobacco extract+ soap, Deltamethrin
0.003%, Malathion 0.05%, Endosulfan 0./5% and Dichlorvos 0.075% twice fortnightly: two
weeks after transplanting cabbage seedling provide sufficient protection from diamond back moth,
cabbage butterfly and aphid Alternate use of botanicals (Azadirachtin and tobacco) with chemical
pesticides (Deltamethrin, Endosulfan, Malathion and Dichlorovos) could be a better option to
reduce selection pressure on DBM larvae.Link for e-copy: http://elibrary.narc.gov.np/?r=1654 E-copies
http://nkcs.org.np/narc/dl/?r=1654URL
