Development, Characterization and Field Assessment of Multiple Insecticides ... 331
Tomato
First Year Field trial was conducted for the
evaluation of MIHTTS of T. chilonis against H.
armigera at Malur, Karnataka in collaboration
with University of Agricultural Sciences (UAS),
Bengaluru during 2007. Tomato was raised dur-
ing summer 2007. The varieties sown were
Shaktiman and Abhinava in 8.0 acre. Compara-
tive evaluation was done in susceptible strain re-
leased plots (1 acre), farmer practice (1 acre), and
in untreated control (200 m). Each treatment was
separated by 200 m of barren land at all the loca-
tions. In tolerant strain plots confidor, neem oil,
and lambda-cyhalothrin were sprayed during the
season, in susceptible strain released plots imi-
dacloprid, monocrotophos + cypermethrin, fen-
valerate, lambda-cyhalothrin (two sprays), and
neem oil was sprayed, in farmers’ practice plot
insecticides sprayed were imidacloprid, mono-
crotophos + cypermethrin, fenvalerate, lambda-
cyhalothrin (two sprays), endosulfan and neem
oil were sprayed once in a week.
Second Year Field trial was conducted for the
evaluation of MIHTTS of T. chilonis against
H. armigera at Malur, Karnataka during Kharif
- Tomato was raised during winter 2008–
- The variety sown was 618—improved in
1.0 acre. Comparative evaluation was done in
susceptible strain released plots, farmer practice
and in untreated control (200 m). Each treat-
ment was separated by 200 m of barren land at
all the locations. In tolerant strain plots Dhanush,
quinolphos (2 sprays), M—45 (3 sprays), copper
oxychloride (2 sprays), Acrobat (2 sprays), Sectin
(1 spray), Blue cop (1 spray) were sprayed dur-
ing the season, in susceptible strain released plots
Dimethomorph, Metacid, quinolphos, M—45,
copper oxychloride, Fenamidome, 10 % manco-
zeb, Blue cop were sprayed, in farmers’ practice
plot monocrotophos, acephate, Rimon, Dash,
acetamiprid, Combident Bloom, and Charm were
sprayed once in a week.
T. chilonis (new insecticides tolerant strain
and susceptible strain) was released in treatments
T 1 and T 2 @ 50,000/ha/release in the form of
parasitized eggs to cover the egg laying period
of H. armigera. The release of parasitoids com-
menced with moth capture in pheromone traps
in all the four areas. Eight days old parasitized
cards were released at weekly interval from April
to June, 2007. The harvesting continued till mid
July 2007.
The eggs parasitism was recorded at each
treatment in 10 subplots. Twenty plants in each
subplot at each location were observed for the
eggs, number of larvae and number of fruits
bored. Thus, 200 plants were observed each time
per treatment. The yield data were recorded at the
end of trial. Field evaluation data on egg para-
sitism, number of larvae/plant and percent fruits
bored and yield data were subjected to one-way
ANOVA, and means were separated by CD val-
ues at 5 %, wherever ANOVA was significant.Cabbage
First Year Field trial was conducted for the evalu-
ation of MIHTTS of T. chilonis against diamond
back moth (DBM) Plutella xylostella (L.) at Malur,
Karnataka in collaboration with UAS. The cab-
bage var. Shristi was raised during summer season
of 2007 in 4 acre. The comparison was made with
susceptible strain in 0.5 acre and farmers’ practice
1.0 acre and 200 m for untreated control. Each
treatment was separated by 200 m of barren land at
all the locations. In tolerant strain plots methomyl,
thiodicarb, emamectin benzoate, and acephate
were sprayed twice the season, in susceptible
strain released plots methomyl, thiodicarb, ema-
mectin benzoate, malathion, acephate acetamiprid
and imidacloprid were sprayed twice, in farmers’
practice plot methomyl, thiodicarb, emamectin
benzoate, malathion, acephate and acetamiprid,
and imidacloprid were sprayed in a week.Second Year Field trial was conducted for the
evaluation of MIHTTS of T. chilonis against
DBM at Malur during Kharif 2008. The cabbage
(variety—Maharani) was raised during winter
season of 2008–2009 in 2 acre. The comparison
was made with susceptible strain, farmers’ prac-
tice and 200 m for untreated control. Each treat-
ment was separated by 200 m of barren land at
all the locations. In tolerant strain plots Takuni