Evaluation Of Biointensive Pest Management Module Against Insect Pest Complex Of Rice

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G.V. SUNEEL KUMAR* AND O. SARADA

Agricultural Research Station, Darsi, Prakasam District – 523 247, A.P., India

ABSTRACT

Experiments were conducted at Krishi Vigyan Kendra farm, Undi and its adopted villages viz. Matsyapuri, Adavikolanu, Mogallu, Kakaraparru and Guttulavaripalem, West Godavari district, Andhra Pradesh in the farmer‘s field during kharif and rabi seasons of 2008-09, 2009-10 and 2010-11 to assess the performance of Bio Intensive Pest Management (BIPM) module against major insect pests of rice (var. Swarna) in comparison to the farmers practice of recommended insecticidal control schedule (non-BIPM module). Analysis of three year results showed that BIPM treated plots recorded significantly lesser dead hearts (1.4 to 6.4 %), white ears (2.1 to 8.0 %) and leaf folder damage (2.6 to 8.2%) compared to the plots grown using farmers’ practices. Similarly significantly lower incidence of brown plant hopper (4.6 to 9.6 / 10 hills), white backed plant hopper (2.8 to 11.7 / 10 hills) and green leaf hopper (2.8 to 9.3 / 10 hills) was noticed in BIPM plots as compared to non-BIPM plots (10.2 to 21.1 BPH / 10 hills, 5.4 to 17.1 WBPH / 10 hills and 6.7 to 15.6 GLH / 10 hills). BIPM plots also recorded significantly higher numbers of predatory population of spiders, coccinellid beetles and mirid bugs. Grain yield in biocontrol field (5996 Kg ha-1) was significantly better as compared to 5626 Kg ha-1 in farmer‘s practice. The average net returns in biocontrol package were

` 30312 ha-1 as compared to ` 22951 ha-1 in farmers’ practice with cost benefit ratio of 1: 2.04 and 1: 1.71, respectively. Therefore, the BIPM technology used was not only directly environment friendly but also more sustainable with a vide increase in biodiversity.

KEY WORDS:

Bio intensive pest management, rice, major insect pests, predators
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