ISSN: 0973-7510

E-ISSN: 2581-690X

Open Access
Mehi Lal1 , Saurabh Yadav2 and B.P. Singh2
1ICAR-Central Potato Research Institute Campus, Modipuram – 250 110, Uttar Pradesh, India.
2ICAR-Central Potato Research Institute, Shimla – 171 001, Himachal Pradesh, India.
J Pure Appl Microbiol. 2017;11(1):599-603
https://doi.org/10.22207/JPAM.11.1.78 | © The Author(s). 2017
Received: 29/01/2017 | Accepted: 05/03/2017 | Published: 31/03/2017
Abstract

The field efficacy of metiram 55%+pyraclostrobin 5% WG, iprovaliadacarb 5.5%+propineb 61.25% WP, dimethmorph 50% WP, dimethmorph 50% WP+ mancozeb 75%, WP, famoxadone16.6+cymoxanil22.1%  SC along with existing standard fungicides  were evaluated for management of late blight during 2012-15. The results revealed that treatment mancozeb 75% WP (0.2%- before appearance) followed by two more spray with mancozeb 75% WP (0.2%) +dimethomorph 50% WP (0.2%) at 7-10 days intervals  showed less terminal disease severity (24.55%) with highest disease controlled (74.45%), which was at statistically par with  treatment  mancozeb75% WP (0.2%, before appearance) followed by cymoxanil 8+mancozeb 64 % WP (0.3%) with two more spray at 7-10 days intervals, with 27.56% terminal disease severity along with disease controlled 71.29%. The highest tuber yield (28.74t/ha) was observed with mancozeb75% WP (0.2% before appearance) followed by two more spray with dimethomorph 50% WP (0.2) at 7-10 days intervals with followed by 28.12 t/ha with mancozeb 75% WP (0.2%- before appearance) followed by two more spray with mancozeb 75% WP (0.2%) +dimethomorph 50% WP (0.2%) at 7-10 days intervals. One spray of mancozeb (contact fungicides: before appearance) and latter two sprays of translaminar/systemic+contact fungicides at 7-10 days interval give better results for management of late blight of potato.

Keywords

Late blight, Potato, Fungicides, Phytophthora infestans.

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