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Evaluation of a New Strobilurin Group of Fungicide for the Management of Blast Disease of Paddy

D. Pramesh, K. Nataraj, G. S. Guruprasad, K. Mahantashivayogayya, B. G. M. Reddy

Journal of Experimental Agriculture International · pp. 1–6 · Published 17 Aug 2016

10.9734/AJEA/2016/27992

Abstract

A new strobilurin group of fungicide, pyraclostrobin 100 g/l CS (Seltima 100 g/l CS) was evaluated for its bio-efficacy against rice leaf blast disease under field condition during Kharif 2013 and 2014 at Agricultural research station, Gangavathi, Karnataka, India. The test fungicide, pyraclostrobin 100 g/l CS was found effective against leaf blast disease which recorded least percent disease index (PDI) of 14.20 and 16.48 @ 75 g a.i./h and @ 100 g a.i./h, respectively. Other fungicides such as tricyclazole 75 WP (300 g/h), Carbendazim 50 WP (500g/h) and Isoprothiolane 40 EC (750 ml/h) recorded significantly more PDI than pyraclostrobin 100 g/l CS. Due to difference in the PDI of leaf blast disease, different treatments recorded statistically significant yield differences. The highest yield (67.78 q/h) was recorded in the treatment of pyraclostrobin 100 g/l CS @ 75 g a.i./h followed by the same chemical @ 100 g a.i./h (66.87 q/h). Therefore, pyraclostrobin 100 g/l CS (Seltima 100 g/l CS) @ 75-100 g a.i/h can be used for effective management of leaf blast disease.

Leaf blast pyraclostrobin 100 g/l CS; PDI tricyclazole 75 WP

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