Which of soil microbes is in positive correlation to yields of maize (Zea mays L.)?

Abstract

Soil microorganisms are critical to maintain soil function, enhance plant health and increase crop yields. This study investigated the effects of organic matter on soil microbial community and assessed which of soil microbes were in positive correlation to maize yields. The results showed that different fertilizer treatments shaped specific microbial communities in the same soils. The most abundant beneficial soil microbes were found in treatments with organic fertilizer produced from cattle manure, return of wheat straw and 70% NPK admixture fertilizers treatment. The correlation analysis revealed that maize yields were in no correlation both to the shifts of soil microbial community structure and to the number of sequences or operational taxonomic units (OTUs) in soil microbes. However, maize yields were in positive correlation to microbial community structure shifts at the species level. 35 bacteria OTUs from 19 orders in 14 classes in 9 phyla were in positive correlation to yields of maize, while in fungi only one OTU<sub>25</sub> belonging to Sordariales was in positive correlation. Our results indicate that the long-term application of organic and inorganic amendments could enrich the soil bacterial and fungal community and promote its diversity.

Soil productivity and structure of bacterial and fungal communities in unfertilized arable soil

“…Actinomycetales is reported to confer beneficial functions, including plant disease suppression and plant growth promotion, to host plants [ 51 ]. Rhizobiales contributes to nutrient cycling, production of phytohormones, and plant growth promotion [ 52 , 53 ]. On the other hand, maize root enriched the fungal orders Pleosporales and Hypocreales .…”

Effects of Long-Term Straw Management and Potassium Fertilization on Crop Yield, Soil Properties, and Microbial Community in a Rice–Oilseed Rape Rotation

“…In addition, crop straw contains abundant organic ingredients, and has been widely applied in fields to promote soil C sequestration [17,18]. Soil microorganisms, such as bacteria and fungi, are the basis of soil fertility and have a great influence on plant health and growth [19,20]. Previous studies have documented the positive and significant impact of straw utilization on soil bacterial and fungal community structure under short-term or long-term straw returning [18,21,22].…”