Studies on Niveum fusarium Wilt Forma Specialis and Its Control

doi:10.3321/j.issn:1000-7091.1992.04.021

Abstract

Abstract: Sixty collections of watermelon plant parts affected by wilt diseases were obtained from ten provinces (cities),i. c. Heilong Jiang, Beijing, etc. The isolations and cultures showed that these specimens belonged to species of Fusar him oxysponm Schlecht, F. solani (Mart. ) Sacc. and F, equiseti (Corda) Sacc. Pathogenicity tests were carried out by inoculating these species separately to seedlings of watermelon, varieties. The results showed that F. oxysporum could cause severe infection to the sec-dings, while the other two could cause no infection. Cross inoculation, tests using the F. oxysporum isolated from cucumber, muskmelon and watermelon were conducted on the seedlings.lt is concluded that the watermelon isolate belongs to F. oxysporum f. sp. niveum (E.F.Smith) Snyder et Hans. During 1989-1990, integrated control of watermelon wilt was carried out. The effects were significant(90.91%- 92.70%) with high yield increases (58.93%-64.93%)

Key words: Niveum fusarium Wilt, Fusctrium oxysporum f, sp, Integrated control.

Huang Zhongsheng, Yang Yuru, Zhu Xiaodan, Wang Zhiqing, Geng Bencong. Studies on Niveum fusarium Wilt Forma Specialis and Its Control[J]. ACTA AGRICULTURAE BOREALI-SINICA, 1992, 7(4): 117-122. doi: 10.3321/j.issn:1000-7091.1992.04.021.

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