Field experiments were conducted during December to .May in the years 2005 and
2006 at ARS, Malapatan, Pokhara to compare soma commercial products of bio- .
pesticides like Neem (Margosom),Bacillus thuringiensis (Bt.) and Nuclear Polyhedrosis
Virus (NPVj with a commonly us,ed chemical insecticide, dichloNos (Nuvan) against
the diamondback moth (DBM), Plutella xy/ostalla L., in lata season cauliflower variety, ·
Kibogiant. Experiments war~ "laid out· in randomized complete block design with eight
treatments and three replications. The pre and post-treatment results ware recorded on
number of DBM laNa a and holes made by it, pupae per plant, . infested and marketao/e
curd .weight per plot. Two years maim results revealed that significantly '(p< 0.01)
minimum number of laNaa (0.~3) and pupae(0.50) par curd were found in the plots
alternately treated with Bt.( Bio'-lep) @ 2.-5gllitar·ot water and NPV-spodo 100LE @
1. o. mVIitar of water for three times at 15 days int~Nal resulting in minimum· damage of
'(5.28%) and maximum marketable curd yield (23.32 t/ha) in ~au/if/ower followed by
dichloN~s (Nuvan)@ 1 mV/itar of water applied for 10 times at. weakly intaNal where
number ·of laNI!J.e, pupae pa_r curd, damage per cant and.marketabla curd yield ware
1.0, 0.57, 8.37% and 21.61 t/ha, respectively compared to maximum number ·of
laNaa, pupae and higher par cant damage and minimum yield with 4.17, 3.89,46.04%
and11.69 t/ha in un'traatad control. Over all re~u/ts indicate that the usa of Bt. and NPV
in_ alternate way can be promoted as an alternative to dichloNos (Nuvan) for the
management of diamond back riioth in cauliflower that ultimately minimizes health risk
to the consumers.

Field experiments were conducted during December to .May in the years 2005 and
2006 at ARS, Malapatan, Pokhara to compare soma commercial products of bio- .
pesticides like Neem (Margosom),Bacillus thuringiensis (Bt.) and Nuclear Polyhedrosis
Virus (NPVj with a commonly us,ed chemical insecticide, dichloNos (Nuvan) against
the diamondback moth (DBM), Plutella xy/ostalla L., in lata season cauliflower variety, ·
Kibogiant. Experiments war~ "laid out· in randomized complete block design with eight
treatments and three replications. The pre and post-treatment results ware recorded on
number of DBM laNa a and holes made by it, pupae per plant, . infested and marketao/e
curd .weight per plot. Two years maim results revealed that significantly '(p< 0.01)
minimum number of laNaa (0.~3) and pupae(0.50) par curd were found in the plots
alternately treated with Bt.( Bio'-lep) @ 2.-5gllitar·ot water and NPV-spodo 100LE @
1. o. mVIitar of water for three times at 15 days int~Nal resulting in minimum· damage of
'(5.28%) and maximum marketable curd yield (23.32 t/ha) in ~au/if/ower followed by
dichloN~s (Nuvan)@ 1 mV/itar of water applied for 10 times at. weakly intaNal where
number ·of laNI!J.e, pupae pa_r curd, damage per cant and.marketabla curd yield ware
1.0, 0.57, 8.37% and 21.61 t/ha, respectively compared to maximum number ·of
laNaa, pupae and higher par cant damage and minimum yield with 4.17, 3.89,46.04%
and11.69 t/ha in un'traatad control. Over all re~u/ts indicate that the usa of Bt. and NPV
in_ alternate way can be promoted as an alternative to dichloNos (Nuvan) for the
management of diamond back riioth in cauliflower that ultimately minimizes health risk
to the consumers.