EFFICACY AND ECONOMICS OF CERTAIN INSECTICIDAL MODULES AGAINST POD BORERS IN PIGEONPEA (Cajanus cajan (L) Millsp.)
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Authors
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M. SREEKANTH, M.S.M. LAKSHMI AND Y. KOTESWARA RAO
Regional Agricultural Research Station, Acharya NG Ranga Agricultural University, Lam, Guntur – 522 034
Abstract
Ravages by lepidopteran pod borers during flowering and pod formation stage and podfly during pod formation
stage is the major bottleneck in attainment of desired productivity levels of pigeonpea. Present study conducted
during Kharif, 2011-12 was framed to device cost effective and farmer friendly module for the management of pod
borer complex in pigeonpea. Evaluation of eight modules along with a control revealed superiority of the module 5
(Flubendiamide 480 SC 2.0 ml/ 10 L at 50% flowering stage - chlorantraniliprole 20 SC 3.0 ml/ 10L at 20 days after
1st spray), followed by module 7 (Spinosad 3.0 ml/10 L at 50% flowering stage -Flubendiamide 2.0 ml/ 10 L at 20 days
after 1st spray) and module 6 (chlorantraniliprole 20 SC 3.0 ml/ 10L at 50% flowering stage – Spinosad @ 3.0 ml/10
L at 20 days after 1st spray), which registered lower pod damage due to different pod borers with highest monetary
returns of Rs.9012, 7192 and 7764 /ha, respectively. However, highest incremental cost- benefit ratio of 1: 2.3 was
obtained with module 5, followed by module 7 (1:1.8) and module 6 (1:1.7).
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