Identification and biological control of tobacco target spot disease （Rhizoctonia solani Kühn） in Sichuan tobacco planting areas

doi:10.14088/j.cnki.issn0439-8114.2021.08.016

Abstract

Abstract: Isolation, identification, pathogenicity and mycelial fusion group determination of pathogenic bacteria collected from tobacco area of Luzhou, Sichuan province were carried out, and several biological pesticides were selected for field control experiments. The results showed that the pathogen was identified as Thanatephorus cucumeris （Frank） Donk, and its anamorph was Rhizoctonia solani Kühn. Observation for the mycelium fusion showed that all the isolates belonged to the anastomosis group 3 （AG-3）. The control effect of Jinggang mycin 10% AS, Bacillus marinus WP and 10.5 billion CFU/g of mixture for Paenibacillus polymyxa and Bacillus subtilis WP were 77.08%, 69.40% and 63.75%,respectively.

Key words: tobacco target spot disease, pathogen identification, biological control

CLC Number:

XU Chuan-tao, ZHANG Chong, ZHANG Ming-jin, XIE Qiang, PENG Yong, ZHANG Yong-hui, XIA Jian-hua, XIA Chun, XIA Bo, GU Yong, WU Yuan-hua. Identification and biological control of tobacco target spot disease （Rhizoctonia solani Kühn） in Sichuan tobacco planting areas[J]. HUBEI AGRICULTURAL SCIENCES, 2021, 60(8): 87-90.

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