International Journal of Pure & Applied Bioscience (IJPAB)
Year : 2018, Volume : 6, Issue : 2
First page : (884) Last page : (890)
Article doi: : http://dx.doi.org/10.18782/2320-7051.6010
Efficacy of Different Fungicides for the Management of Downy Mildew of Cucumber Grown Under Low Plastic Tunnel
Javid Ahmad Bhat1*, Rizwan Rashid2, Waseem Ali Dar3 and R. A. Bhat4
1Department of Plant Pathology, Punjab Agricultural University, Ludhiana
2,3,4KVK-Zanaskar Sher-e-Kashmir University of Agriculture Science and Technology (K) –Srinagar, India
*Corresponding Author E-mail: javidrashid635@gmail.com
Received: 20.11.2017 | Revised: 29.12.2017 | Accepted: 4.01.2018
ABSTRACT
Downy mildew caused by Pseudoperonospora cubensis (Berk. and Curt.) Rostow has become a serious problem in successful cultivation of cucumber grown under low plastic tunnel in Punjab. Study on effect of sowing dates on development of cucumber downy mildew during 2008-09 and 2009-10 crop season revealed that mean disease severity of 48.70 per cent was recorded on cucumber cultivar Poinsett when the crop was sown on 15th December. The disease severity increased with delay in date of sowing and it was recorded as 73.30 per cent when sown on 30th January. Relative rate of disease progress ( r) and area under disease progress curve (AUDPC) were also observed at these sowing dates. Eleven different fungicides were used for the management of cucumber downy mildew. Minimum disease severity was recorded by spraying metalaxyl + mancozeb (9.59 %), metalaxyl M + mancozeb (11.02 %), azoxystrobin (13.37 %) , Curzate M-8 (cymoxanil + mancozeb) (18.99 %), dimethomorph) (20.66 %), mancozeb (24.85 %), fluopicolide + propamocarb (24.88 %), Mandipropamid (26.21 %), propineb) (26.48 %), metiram (28.05 %), copper hydroxide (29.86 %). Fruit yield was significantly higher in treated plots with fungides Ridomil MZ and Ridomil Gold as compared to other fungicides and untreated control.
Key words: Cucumber, Downy mildew, Fungicides, Plastic low tunnel, Yield
Full Text : PDF; Journal doi : http://dx.doi.org/10.18782
Cite this article: Bhat, J.A., Rashid, R., Dar, W.A. and Bhat, R.A., Efficacy of different fungicides for the management of downy mildew of cucumber grown under low plastic tunnel, Int. J. Pure App. Biosci.6(2): 884-890 (2018). doi: http://dx.doi.org/10.18782/2320-7051.6010
