Control of continuous potato monoculture barrier via biological soil disinfestation method in Yellow River irrigation areas of central Gansu Province, Northwest China

• Published in: Ying yong sheng tai xue bao Vol. 26; no. 4; p. 1205
• Main Authors: Zhang, Shu-le, Liu, Guo-feng, Qiu, Hui-zhen, Wang, Di, Zhang, Jun-lian, Shen, Qi-rong
• Format: Journal Article
• Language: Chinese
• Published: China 01.04.2015
• Subjects: Agricultural Irrigation; Agriculture - methods; Bacteria; Biomass; China; Floods; Fungi; Plant Diseases - prevention & control; Plant Roots; Plant Stems; Soil; Soil Microbiology; Solanum tuberosum - growth & development
• ISSN: 1001-9332

The potential of biological soil disinfestation (BSD) in control of continuous potato monoculture barrier was investigated in present study. BSD involves the induction of soil reduction conditions through incorporation of easily decomposed organic materials into soil, flooding the soil by irrigation, and covering the soil surface with plastic film. Control (CK) was left without cover and organic amendment as well as flooding. Field experiment was conducted for testing the effect of BSD approach on the control of continuous potato monoculture barrier, especially on tube yield, plant growth and development, suppression of soil-borne pathogen, and soil microbial community and enzyme activities. Compared with CK, BSD treatment significantly increased tuber yield by 16.1% and plant biomass by 30.8%, respectively. Meanwhile, the incidence of diseased plant and the ratio of diseased tuber in BSD treatment also significantly decreased by 68.0% and 46.7% as compared to those in CK, respectively. BSD treatment signific