Organic fertilizer activates soil beneficial microorganisms to promote strawberry growth and soil health after fumigation

• Published in: Environmental pollution (1987) Vol. 295; p. 118653
• Main Authors: Li, Qingjie, Zhang, Daqi, Song, Zhaoxin, Ren, Lirui, Jin, Xi, Fang, Wensheng, Yan, Dongdong, Li, Yuan, Wang, Qiuxia, Cao, Aocheng
• Format: Journal Article Web Resource
• Language: English
• Published: England Elsevier Ltd 15.02.2022; Elsevier
• Subjects: Agriculture & agronomie; Agriculture & agronomy; Beneficial microorganisms; Dazomet fumigation; Fertilizers; Fragaria; Fumigation; Life sciences; Organic fertilizer; Sciences du vivant; Soil; Soil health; Soil micro-ecology; Soil Microbiology; Strawberry yield; Beneficial microorganisms; Organic fertilizer; Dazomet fumigation; Strawberry yield; Soil micro-ecology; Soil health
• ISSN: 0269-7491; 1873-6424; 1873-6424
• DOI: 10.1016/j.envpol.2021.118653

Soil fumigants aim to control soil-borne diseases below levels that affect economic crop production, but their use also reduces the abundance of beneficial microorganisms. Previous studies have shown that adding various types of fertilizers to soil after fumigation can reshape the soil microbial community and regulate crop growth. We fumigated soil with dazomet (DZ) that had been cropped continuously for more than 20 years. After fumigation we applied silicon fertilizer, potassium humate organic fertilizer, Bacillus microbial fertilizer or a mixture of the last two. We studied the effects of different fertilizers treatments on the soil's physicochemical properties, enzyme activities, key soil pathogens and beneficial microbes. We found that fertilizers applied after fumigation promoted soil beneficial microorganisms (such as Fimicutes, Chloroflexi, Bacillus and Actinomadura) restoration; increased Fusarium and Phytophthora pathogen mortality, the content of ammonium nitrogen, sucrase enzyme activity; and increased strawberry fruit yield. A significant increase in strawberry yield was positively correlated with increases in beneficial microorganisms such as Gemmatimonadota, Firmicutes, Bacillus and Flavisolibacter. We concluded that organic fertilizer applied after fumigation significantly increased the number of beneficial microorganisms, improved the physicochemical properties of the soil, increased soil enzyme activities, inhibited the growth of soil pathogens to increase strawberry fruit yield. In summary, organic fertilizer activated soil beneficial microorganisms after soil fumigation, promoted soil health, and increased strawberry fruit yield. [Display omitted] •Organic fertilizer promoted beneficial microorganisms restoration after fumigation.•Adding fertilizers after fumigation strengthens the control effect on soil pathogens.•Fertilizers applied after fumigation promoted soil health and strawberry growth.•Fertilizers applied after fumigation improved soil nutrients and enzyme activity.•Silicon fertilizer and potassium humate significantly increased strawberry yield.