BIO-EFFICACY AND ECONOMIC ANALYSIS OF INSECTICIDES FOR THE MANAGEMENT OF POD BUGS IN MUNG BEAN (VIGNA RADIATA (L.) WILCZEK)
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Keywords:
Benefit- cost ratio, Mung bean, Pod bugs, Pulses, SpinosadAbstract
The present study evaluates the bio-efficacy and economics of different insecticides used
against pod bugs and was conducted at the Agricultural Research Station, Bapatla during rabi
2024–25. Insecticides were assessed for their effect on egg masses and nymph/adult populations
and their effect on pod and seed damage and cost and economics were worked out. Results
indicated that Commercial azadirachtin 10000 ppm achieved the highest reduction in egg masses
(67.3% and 80.7% at 3 and 7 DAS, respectively). Spinosad 45 SC (175 ml/ha) proved most
effective against nymphs and adults (59.4% and 72.1% reduction at 3 and 7 DAS, respectively),
and also recorded the lowest pod damage (4.53%) and seed damage (6.47%). Spinosad resulted
in the highest grain yield (1563 kg/ha), while chlorantraniliprole 18.5 SC (150 ml/ha) and neem
seed kernel extract (NSKE) 5% also produced yields exceeding 1300 kg/ha. Among the treatments,
chlorantraniliprole recorded the highest benefit–cost ratio (3.1). These findings highlight Spinosad
and chlorantraniliprole as promising options for pod bug management in mung bean along with
NSKE under Krishna delta region.
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