International Journal of Horticulture, 2017, Vol.7, No.28, 250-261
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maintained their effectiveness against fruit borer and were significantly superior over rest of the insecticidal
treatments.
At 5 days after third spray flubendiamide 480 SC @ 60 g a.i./ha (1.2 larvae/ meter row length) and indoxacarb
14.5 SL @ 21.75 g a.i./ha (1.3 larvae/ meter row length) were equally effective against fruit borer and were
significantly superior over rest of the insecticidal treatments. The next best treatments included flubendiamide 480
SC @ 48 g a.i./ha, lambda cyhalothrin 5 EC @ 18.75 g a.i./ha, flubendiamide 480 SC @ 36 g a.i./ha and
flubendiamide 480 SC @ 24 g a.i./ha with 3.5, 3.7, 4.3 and 5.4 larvae per meter row length, respectively and were
on par with each other (Table 1).
At 10 days after third spray also flubendiamide 480 SC @ 60 g a.i./ha (0.4 larvae/ meter row length) and
indoxacarb 14.5 SL @ 21.75 g a.i./ha (0.5 larvae/ meter row length) were equally effective against fruit borer and
were significantly superior over rest of the insecticidal treatments. The next best treatment included flubendiamide
480 SC @ 48 g a.i./ha (1.2 larvae/ meter row) which was significantly superior over flubendiamide 480 SC @ 36
g a.i./ha, flubendiamide 480 SC @ 24 g a.i./ha and lambda cyhalothrin 5 EC @ 18.75 g a.i./ha with 2.1, 3.4 and
3.5 larvae per meter row length, respectively (Table 1).
3.1.2 Second season
The number of gherkin fruit borer larvae varied from 13.2 to 15.2 per meter row length among the various
insecticides tested without any significant differences at one day before imposition of treatments (Table 2).
At 5 days after first spray lowest number of larvae (5.3 / meter row length) was recorded in flubendiamide 480 SC
@ 60 g a.i./ha which was on par with indoxacarb 14.5 SL @ 21.75 g a.i./ha (5.5 larvae/ meter row length) and
these two treatments were significantly superior over rest of the insecticidal treatments. The next best treatments
in this respect included flubendiamide 480 SC @ 48 g a.i./ha, flubendiamide 480 SC @ 36 g a.i./ha and lambda
cyhalothrin 5 EC @ 18.75 g a.i./ha which recorded 7.8, 9.4 and 9.7 larvae per meter row length, respectively and
were equally effective. Flubendiamide 480 SC @ 24 g a.i./ha which recorded highest number of larvae (10.3/
meter row length) was least effective treatment and was significantly superior over untreated check (15.1 larvae/
meter row length).
There was a slight increase the larval population at 10 days after first spray. However, the efficacy trend remained
same as above. The lowest number of larvae was noticed in flubendiamide 480 SC @ 60 g a.i./ha (7.1/ meter row
length) which was significantly superior over rest of the insecticidal treatments except indoxacarb 14.5 SL @
21.75 g a.i./ha (7.5 larvae/ meter row length). The next best treatments included flubendiamide 480 SC @ 48 g
a.i./ha and flubendiamide 480 SC @ 36 g a.i./ha (9.3 and 11.4 larvae/ meter row length, respectively) and were on
par with each other. The least effective treatments were flubendiamide 480 SC @ 24 g a.i./ha and lambda
cyhalothrin 5 EC @ 18.75 g a.i./ha which recorded highest number of larvae (12.2 and 11.6/ meter row length,
respectively) but were significantly superior over untreated check (15.8/ meter row length).
At 5 and 10 days after second spray also flubendiamide 480 SC @ 60 g a.i./ha (3.8 and 4.9 larvae/ meter row
length, respectively) and indoxacarb 14.5 SL @ 21.75 g a.i./ha (3.9 and 5.0 larvae/ meter row length, respectively)
maintained their effectiveness against fruit borer and were significantly superior over rest of the insecticidal
treatments.
At 5 days after third spray flubendiamide 480 SC @ 60 g a.i./ha (1.7 larvae/ meter row length) and indoxacarb
14.5 SL @ 21.75 g a.i./ha (1.8 larvae/ meter row length) were equally effective against fruit borer and were
significantly superior over rest of the insecticidal treatments. The next best treatments was flubendiamide 480 SC
@ 48 g a.i./ha with 3.4 larvae per meter row length (Table 2).
