International Journal of Horticulture, 2017, Vol.7, No.28, 250-261
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At 10 days after third spray, flubendiamide 480 SC @ 60 g a.i./ha with 3.1 per cent fruit damage was highly
effective against fruit borer and was significantly superior over rest of the insecticidal treatments except
indoxacarb 14.5 SL @ 21.75 g a.i./ha with 3.4 per cent fruit damage. The next best treatments included
flubendiamide 480 SC @ 48 g a.i./ha (5.4%) and flubendiamide 480 SC @ 36 g a.i./ha (6.7%) and were on par
with each other. The least effective treatments were flubendiamide 480 SC @ 24 g a.i./ha (8.3%) and lambda
cyhalothrin 5 EC @ 18.75 g a.i./ha (8.4%) which recorded highest fruit damage and were significantly superior
over untreated check (Table 3).
Overall efficacy and effect on fruit yield
Three sprays of flubendiamide 480 SC @ 60 g a.i./ha afforded highest protection against fruit borer with 91.3 per
cent followed by indoxacarb 14.5 SL @ 21.75 g a.i./ha and flubendiamide 480 SC @ 48 g a.i./ha with 90.5 and
84.9 per cent, respectively over untreated check (Table 3).
All the insecticides recorded significantly higher marketable fruit yield than untreated check. Three sprays of
flubendiamide 480 SC @ 60 g a.i./ha produced significantly higher marketable fruit yield of 10.45 t/ha followed
by indoxacarb 14.5 SL @ 21.75 g a.i./ha (10.24 t/ha) and were significantly superior over rest of the insecticidal
treatments (Table 3).
3.2.2 Second season
Efficacy
At one day before second spray (
i.e.
10 days after first spray), flubendiamide 480 SC @ 60 g a.i./ha recorded
lowest fruit damage (18.5%) and was significantly superior over rest of the treatments except indoxacarb 14.5 SL
@ 21.75 g a.i./ha (19.1%) (Table 4).
At 5 and 10 days after second spray, flubendiamide 480 SC @ 60 g a.i./ha with 12.2 and 11.3 per cent fruit
damage, respectively was highly effective against fruit borer and was significantly superior over rest of the
insecticidal treatments except indoxacarb 14.5 SL @ 21.75 g a.i./ha with 13.5 and 12.4 per cent fruit damage,
respectively.
At 5 days after third spray also, flubendiamide 480 SC @ 60 g a.i./ha with 8.7 per cent fruit damage was highly
effective against fruit borer and was significantly superior over rest of the insecticidal treatments except
indoxacarb 14.5 SL @ 21.75 g a.i./ha with 9.2 per cent fruit damage. The next best treatments included
flubendiamide 480 SC @ 48 g a.i./ha with 10.4 per cent fruit damage and was significantly superior to
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 (Table 4).
At 10 days after third spray, flubendiamide 480 SC @ 60 g a.i./ha with 4.0 per cent fruit damage was highly
effective against fruit borer and was significantly superior over rest of the insecticidal treatments except
indoxacarb 14.5 SL @ 21.75 g a.i./ha with 4.8 per cent fruit damage. The next effective treatments included
flubendiamide 480 SC @ 48 g a.i./ha (6.2%) and flubendiamide 480 SC @ 36 g a.i./ha (7.3%) and were on par
with each other. The least effective treatments were flubendiamide 480 SC @ 24 g a.i./ha (9.5%) and lambda
cyhalothrin 5 EC @ 18.75 g a.i./ha (9.2%) which recorded highest fruit damage but were significantly superior
over untreated check (36.8%) (Table 4).
Overall efficacy and effect on fruit yield
Three sprays of flubendiamide 480 SC @ 60 g a.i./ha afforded highest protection against fruit borer with 89.1 per
cent followed by indoxacarb 14.5 SL @ 21.75 g a.i./ha and flubendiamide 480 SC @ 48 g a.i./ha with 87.3 and
83.2 per cent, respectively over untreated check (Table 4).
