.png){kind=icon}
.png){kind=icon}
Return
Different green manures showed inconsistent effects on soil properties, fungal communities and crop yield
.png){kind=icon}
PRE
AI
C
Z
Y
B
Z
G
L
项
J
DOI：10.1007/s11368-026-04508-1.png)
.png){kind=icon}
Original request for help.png){kind=icon}
Share.png){kind=icon}
Save
Abstract
En 中文
Continuous-cropping constraints of sweet potato (Ipomoea batatas (L.) Lam.) with mineral fertilizers could decrease yield due to soil degradation and the accumulation of soil-borne pathogens. Green manure was a sustainable strategy for improving soil health and microbial activity. This study aimed to evaluate the effects of different green manure species on the agroecosystem and identify the optimal green manure species for sustainable development of sweet potato production. The soils were collected from a field experiment station of sweet potato–green manure rotation system, including five treatments: winter fallow (CK), sweet potato in rotation with ryegrass (RG), radish (RD), hairy vetch (HV) and rapeseed (RP). The fungal community structure was analyzed using high-throughput sequencing technology. Application of green manures, especially cruciferous green manures (radish and rapeseed), increased the contents of soil organic carbon (SOC) and total phosphorus (TP). The cruciferous green manures enhanced the activities of cellobiohydrolase (CB), leucine aminopeptidase (LAP) and acid phosphatase (ACP). The RD and RP significantly increased crop yield by 23% and 14% relative to the CK, respectively. All green manure applications altered fungal community composition and decreased fungal network complexity. The cruciferous green manures enriched saprotrophic fungal taxa and decreased fungal Simpson evenness and niche width, suggesting soil fungal succession towards organic matter degradation. Application of green manures showed little effect on plant pathogen OTU richness, but hairy vetch significantly increased the relative abundance of plant pathogens by 54% relative to the CK. The findings highlighted that the cruciferous green manures, especially radish, improved soil health and crop yield by enhancing soil enzyme activity and enriching saprotrophic fungal taxa. This study might provide a theoretical basis for the optimal green manure rotation with sweet potato, contributing to the sustainable development of the agricultural ecosystem.
Keywords:
Green manure
Fungal community
Soil health
Sweet potato
Soil fungal ecology
Journal
IF:
3
Papers:
548
Citations:
1.1W
Organization
Cited Papers