Control of Apple Replant Disease Using Mixed Cropping with Brassica juncea or Allium fistulosum

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Abstract

Evidence indicates that Allium and Brassica species which release bioactive compounds are widely used in bio‐fumigation to suppress soil‐borne diseases. However, the active molecules of such plant residues are easily volatilized. In this study, we conducted mixed cropping of the apple tree with Allium fistulosum or Brassica juncea; the results demonstrated that such mixed cropping significantly improved the growth of the grafted apple seedlings and alleviated apple replant disease (ARD) for two years. The terminal‐restriction fragment length polymorphism profile results showed that the soil fungal community demonstrated distinct variation and diversity in terms of composition. A. fistulosum and B. juncea significantly improved the Margalef, Pielou, and Shannon indices. In addition, the analyses of clone libraries showed that A. fistulosum and B. juncea promoted the proliferation of antagonistic fungi such as Mortierella, Trichoderma, and Penicillium, and inhibited the proliferation of pathogens such as Fusarium. Fusarium. Proliferatum (F. proliferatum) was abun-dant in replanted soil and proved to be an aggressive pathogen of apple seedlings. Our findings thus indicate that apple tree mixed cropping with A. fistulosum and B. juncea was an effective long-term method for modifying the resident fungal community and alleviating ARD.

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APA

Zhao, L., Wang, G., Liu, X., Chen, X., Shen, X., Yin, C., & Mao, Z. (2022). Control of Apple Replant Disease Using Mixed Cropping with Brassica juncea or Allium fistulosum. Agriculture (Switzerland), 12(1). https://doi.org/10.3390/agriculture12010068

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