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Author: Abhilasha C.R. × Start date: 2010 × Thesis Type: Ph.D ×
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    ThesisItemOpen Access
    Studies on the Pest Complex and Integrated Management of Pod Borer Complex in Pea (Pisum sativum L.)
    (University of Agricultural Science, Dharwad, 2016-06) Abhilasha C.R.; Shekharappa
    Studies on the population dynamics of pea pests in different dates of sowing, estimation of crop loss due to the incidence of sucking pests and pod borer complex, screening of varieties against key pests and management of sucking pests and pod borers were undertaken during kharif 2014 and 2015 at the Main Agricultural Research Station (MARS), University of Agricultural Sciences, Dharwad in randomized complete block design (RCBD). The crop sown during Is fortnight of June recorded least incidence of all insect pests including pod borers. The least flower (22.66 %), pod (33.86 %) and seed damage (35.15 %) were recorded on the crop sown during Ist fortnight of June. The highest avoidable loss (59.07 %), pod yield (39.82 q/ha) and per cent increase in yield over control was (144.58 %) recorded in fully protected plots treated with flubendiamide 480 SC @ 0.5 ml/l and carbofuran 3 G @ 12 kg/acre. The avoidable loss due to the sucking pest was 27.18 per cent. From among 15 varieties least thrips population was observed on Arka Sampoorna (1.10/ three leaves) followed by Arka Ajit (1.13 thrips/ three leaves). Against leaf miner, Arka Sampoorna, Arka Karthika, Arka Ajit and GS-10 were found to be moderately resistant with infestation index of 0.36, 0.39, 0.45 and 0.47, respectively. Arka Sampoorna and Arka Ajit were found to be resistant to pod borers with least per cent pod damage of 16.56 per cent and 17.08 per cent, respectively. Studies on management of sucking pest revealed that acetamprid 20 SP 1 g/l and NSKE 5 % was effective against thrips, leaf hopper and leaf miner. Flubendiamide 480 SC @ 0.5 ml/l and among biopesticides NSKE 5 % was effective against pod borer complex viz., Helicoverpa armigera, Cydia nigricana, Lampodies bioeticus and Spodoptera exigua in pea.