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ARS Home » Southeast Area » Stoneville, Mississippi » Crop Genetics Research » Research » Publications at this Location » Publication #300972
Title: Developing suppressive soil for root diseases of soybean with continuous long-term cropping of soybean in black soil of northeast China

Author
item WEI, WEI - Chinese Academy Of Sciences
item XU, YANLI - Chinese Academy Of Sciences
item Li, Shuxian
item ZHU, LIN - Northeast Forestry University
item SONG, JIE - Chinese Academy Of Sciences

Submitted to: Acta Agriculture Scandinavica Section B – Soil & Plant Science
Publication Type: Peer Reviewed Journal
Publication Acceptance Date: 11/24/2014
Publication Date: 4/1/2015
Citation: Wei, W., Xu, Y., Li, S., Zhu, L., Song, J. 2015. Developing suppressive soil for root diseases of soybean with continuous long-term cropping of soybean in black soil of northeast China. Acta Agriculture Scandinavica Section B – Soil & Plant Science. 65 (3): 279-285.

Interpretive Summary: Continuous cropping of soybean has been very popular in Heilongjiang province, the main soybean production area in northeast China. However, this field practices could lead to low commercial quality and yield in soybean production, but there were reports about the reduction of disease severity after a monoculture of one crop for several years. In this study, field experiments were set up in the northeast China in 1991 to test if soil suppressive to soybean root diseases could be developed with continuous long-term soybean cropping. Based on the field observation in 2007, 2009, and 2011, soybean root growth was promoted and the severities of root disease were reduced in a field with continuous long-term soybean cropping treatment from 1991 to 2011. Population densities of the soybean root pathogens in the long-term soybean cropping field were significantly lower than that of cropping treatments in the fields with rotation of soybean and wheat or corn. Higher levels of biological control agents were also found in the long-term soybean cropping field. Therefore, continuous long-term cropping of soybean could develop soil suppressive to soybean root diseases, and is recommended for use in the black soil field in northeast China.

Technical Abstract: Field experiments were set up in northeast China in 1991 to test if suppressive soil to soybean root diseases could be developed with continuous long-term soybean cropping. Based on the field observation in 2007, 2009, and 2011, soybean root growth was promoted and the severities of root disease were reduced in a field with continuous long-term soybean cropping treatment from 1991 to 2011. Population densities of the pathogens (Fusarium spp. and Heterodera glycines) in the long-term soybean cropping field were significantly (p<0.05) lower than that of cropping treatments in the fields with rotation of soybean and wheat or corn. Higher levels of biological control agents, such as Trichoderma harzianum, Pseudomonas fluorescens, Pochonia chlamydosporia and Paecilomyces lilacinus, also were commonly found in the long-term soybean cropping field. Therefore, continuous long-term cropping of soybean could develop suppressive soil to soybean root diseases, and is recommended for use in the black soil field in northeast China.