Acta Scientific Agriculture (ASAG)(ISSN: 2581-365X)

Review Article Volume 4 Issue 12

A Review on Rice False Smut, it’s Distribution, Identification and Management Practices

Bhanu Dangi1*, Saugat Khanal2 and Shubekshya Shah3

1Sahara Multipurpose Agriculture Farm, Tulsipur, Dang, Nepal
2Faculty of Agriculture, Agriculture and Forestry University, Rampur, Chitwan, Nepal
3Institute of Agriculture and Animal Science, Tribhuvan University, Nepal

*Corresponding Author: Bhanu Dangi, Sahara Multipurpose Agriculture Farm, Tulsipur, Dang, Nepal.

Received: October 27, 2020; Published: November 21, 2020

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Abstract

  Rice (Oryza sativa) is the major source of food security for most of the population in the world. False smut is recently emerging as a major Rice disease which was previously considered to have a negligible impact. An ascomycetes fungus, Villosiclava virens is the pathogen that causes the False Smut disease of rice. It is found in two different stages sexual and asexual and both spores can infect the spikelet and lead to the formation of smut ball of rice grain. The disease has been reported from all across the world after being reported for the first time in Tamil Nadu by Cooke in 1878. Rice False Smut has been reported to cause 40% of the yield losses and this disease can be controlled with the proper management practices and the control approaches. The disease is found to have linked with the higher nitrogen usages and the occurrence of heavy rainfall during Reproductive stage. Preventive approaches include crop rotation, optimum nitrogen usages, selection of the resistant variety, scheduling of the crop plantation to avoid raining during sensitive stages and field preparation. While control of the disease could be done with different methods, application of fungicides Triûoxystrobin 25%+ Tebuconazole 50% and Propiconazole 25 EC in vitro and in vivo condition showed 100% inhibition to growth of fungal mycelium being the most effective chemical among other contemporary fungicides. Among the different fungicides tested azoxystrobin (18.2%) SC showed better efficacy at 0.1 per cent and enhanced the paddy yield under field condition. The study done by Raji 2016 shows significant control of the False smut using the extract of garlic, turmeric, lantana and Bael, whereas plant oils of lemon grass and cinnamon have completely inhibited the growth of U. virens. Andargie., et al. (2017) reported Antennariella placitae a bio-control agent to be effective against rice false smut (Ustilaginoidea virens) both in vitro and in vivo condition. This review aims to educate about the disease and its effective management strategies.

Keywords: False Smut; Ustilaginoidea virens; Rice Disease, Fungicides, Disease Management

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Citation

Citation: Bhanu Dangi., et al. “A Review on Rice False Smut, it’s Distribution, Identification and Management Practices". Acta Scientific Agriculture 4.12 (2020): 48-54.




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