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International Journal of
Agriculture and Plant Science
ARCHIVES
VOL. 1, ISSUE 4 (2019)
Efficacy of new chemical PII 122 4% g (Thiocyclam hydrogen oxalate 4g) in managing rice pests
Authors
D Sudha Rani, M Praveen Kumar
Abstract
The major production constraint of rice in enhancing productivity is due to attack by pests. Rice stem borer and leaf folder are considered as economic pests and influence the yield if proper timely management practices are not adopted. In case of severe pest incidences the usage of insecticides is inevitable. A single insecticide application may control various pest species and usually forms a persistent residue that continues to kill insects for more days after application. Many farmers are adopting combination chemicals in order to manage the various pests attack at one instance. But, regular usage of chemicals with same mode of action and in compatible insecticidal combinations may lead to pest resistance, resurgence and residual effect. Granular formulations do not blow or drift and are considered relatively safe from the standpoint of accidental human exposure. Hence, alternate chemicals in form of granular formulations which can target major pests with no phtyotoxicity on crops are required. Hence, studies on efficacy pertaining to PII 122 4% G at different concentrations along with check chemicals viz., cartap hydrochloride 4 G, fipronil 0.3 G and untreated control were evaluate at Agricultural Research Station, Garikapadu during rabi 2017-18 to assess the efficacy of various test chemicals against stem borer and leaf folder infesting rice. The experimental trial was laid out with eight treatments that were replicated thrice and two spraying were imposed during the entire crop period at tillering at panicle initiation stage. The data on per cent leaf folder damaged leaves before and at 7, 14, 21 and 28 days after application and % Dead hearts before and at 10, 20, 30 and 40 days after application and % White ears before harvest were recorded. The data was pooled and were analysed using SPSS statistical package. The results revealed that, the treatment T7 (university standard) and T3 (PII 122 4% G @ 500g a.i./ha) was found effective in suppressing the leaf folder and stem borer in terms of dead hearts and white ears. T5 was also found effective in suppressing the stemborer infestation and is found on par with the efficacy of test chemical T7 and T3. Hence, it can be concluded that PII 122 4% G @ 500g a.i./ha is effective against stem borer and leaf folder with no phytotoxicity on rice crop.
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Pages:35-40
How to cite this article:
D Sudha Rani, M Praveen Kumar "Efficacy of new chemical PII 122 4% g (Thiocyclam hydrogen oxalate 4g) in managing rice pests". International Journal of Agriculture and Plant Science, Vol 1, Issue 4, 2019, Pages 35-40
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