Effects of <i>Bacillus amyloliquefaciens</i> B1619 on Growth and Fusarium Wilt of Continuous Cropping Watermelon

WANG Xia-wen; MENG Jia-li; LIU Yong-feng; CHEN Zhi-yi; ZHANG Zhi-hui; Yu Xiang

doi:10.19303/j.issn.1008-0384.2019.11.010

Volume 34 Issue 11

Nov. 2019

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Article Navigation > Fujian Journal of Agricultural Sciences > 2019 > 34(11): 1302-1308

WANG X W, MENG J L, LIU Y F, et al. Effects of Bacillus amyloliquefaciens B1619 on Growth and Fusarium Wilt of Continuous Cropping Watermelon [J]. Fujian Journal of Agricultural Sciences，2019，34（11）：1302−1308. doi: 10.19303/j.issn.1008-0384.2019.11.010

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WANG X W, MENG J L, LIU Y F, et al. Effects of Bacillus amyloliquefaciens B1619 on Growth and Fusarium Wilt of Continuous Cropping Watermelon [J]. Fujian Journal of Agricultural Sciences，2019，34（11）：1302−1308. doi: 10.19303/j.issn.1008-0384.2019.11.010

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Effects of Bacillus amyloliquefaciens B1619 on Growth and Fusarium Wilt of Continuous Cropping Watermelon

doi: 10.19303/j.issn.1008-0384.2019.11.010

1.
Suqian Institute of Agricultural Sciences, Jiangsu Academy of Agricultural Sciences, Suqian, Jiangsu　223800, China
2.
Institute of Plant Protection, Jiangsu Academy of Agricultural Sciences, Nanjing, Jiangsu　210014, China

Received Date: 2019-07-24
Rev Recd Date: 2019-10-08
Publish Date: 2019-11-01

Abstract

Abstract

Objective Efficacy and optimum application of Bacillus amyloliquefaciens B1619 to control Fusarium wilt on continuous cropping watermelons were investigated. Methods A field experiment with a random block design was conducted for 4 consecutive years to examine the effects of the microbial agent applied by different means and dosages on the growth and disease occurrence of the watermelon and the major microflora in the rhizosphere soil. Results At a rate of (18+9) g B1619 to fill each hole dug into the ground around the plants was the selected method to deliver a 43.20% increase on watermelon yield for the study. The sugar contents in the center and peripheral by the rind of watermelon and marketability of the harvested melons increased significantly with the application. The application also changed the rhizosphere microflora community where the continuous cropping of watermelon was practiced. The bacteria count in the rhizosphere soil was 1.93 times of control at flowering stage and 1.27 times at maturing stage, while the number of pathogens, Fusarium oxysporum, reduced to 33.38% of control at flowering stage and 37.19% at maturing stage. Conclusion The “hole-digging” method of applying B1619 at (18+9) g/hole rendered a high yield, supreme fruit quality, and the much reduced incidence of Fusarium wilt on the watermelons.
- Bacillus amyloliquefaciens,
- watermelon wilt,
- application method,
- biocontrol effect

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References(28)

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