Cover cropping enhances soil microbial biomass and affects microbial community structure: A meta-analysis

Ihsan, Muhammad; Wang, Jun; Sainju, Upendra M.; Zhang, Shaohong; Zhao, Fazhu; Khan, Amir Zaman

doi:10.1016/j.geoderma.2020.114696

Cited by 157 publications

(73 citation statements)

References 52 publications

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“…In addition to fertilizer N, SR provides a source of N that can be made available to plants via microbial mineralization. Also, SR can stimulate the growth of microorganisms, thus increasing the MBC content (Nevins et al 2018;Muhammad et al 2021). Excess N application causes water eutrophication, soil acidification and other adverse environmental effects (Du et al 2020).…”

Section: Discussionmentioning

confidence: 99%

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Stover return and nitrogen application affect soil organic carbon and nitrogen in a double‐season maize field

et al. 2021

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Cultivation techniques have an important influence on grain yield of maize. This experiment investigated the effect of stover return (SR) and different nitrogen (N) application rate on soil organic carbon (SOC) composition, soil nutrient and maize yield.• Different nitrogen application rate 100 (N100), 150 (N150), 200 (N200), 250 (N250) or 300 (N300) kg ha À1 applied to the maize field with stover return and without stover return traditional planting (TP) method.• Nitrogen application rate and stover return affected the SOC, labile organic carbon (LOC), microbial biomass (MBC), NO 3 À -N, NH 4 + -N and maize yield. Soil N, soil carbon content and maize yield of SR were all higher than TP. The SOC content of SR and TP were 9.67 and 9.19 g kg À1 , respectively. Nitrogen application was significantly and positively correlated with soil MBC, LOC, SOC, NO 3 À -N, NH 4 + -N and yield. The maximum values of SOC composition, soil nutrients and maize yield were reached at SR with 250 kg ha À1 .• Stover return with application of N 250 kg ha À1 significantly increased the growth attribute and maize yield in subtropical region compared with traditional planting.

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Section: Discussionmentioning

confidence: 99%

“…2018; Muhammad et al . 2021). Excess N application causes water eutrophication, soil acidification and other adverse environmental effects (Du et al .…”

Section: Discussionmentioning

confidence: 99%

Stover return and nitrogen application affect soil organic carbon and nitrogen in a double‐season maize field

et al. 2021

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“…Straw decomposition and nutrient release are accelerated by the high temperature in this region ( Ren et al, 2020 ). Residues incorporation into the soil decomposed more rapidly, which releases a variety of mineral nutrients that may be easily available and absorbed by plants ( Muhammad et al, 2021 ). The straw C/N ratio is a factor that determines the rate of decomposition of the material, with lower C/N ratios favoring bacteria while higher fungi ratios can degrade more complex organic molecules such as lignin.…”

Section: Introductionmentioning

confidence: 99%

Straw Return and Nitrogen Fertilization to Maize Regulate Soil Properties, Microbial Community, and Enzyme Activities Under a Dual Cropping System

Ihsan

Xin

et al. 2022

Front. Microbiol.

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Soil sustainability is based on soil microbial communities’ abundance and composition. Straw returning (SR) and nitrogen (N) fertilization influence soil fertility, enzyme activities, and the soil microbial community and structure. However, it remains unclear due to heterogeneous composition and varying decomposition rates of added straw. Therefore, the current study aimed to determine the effect of SR and N fertilizer application on soil organic carbon (SOC), total nitrogen (TN), urease (S-UE) activity, sucrase (S-SC) activity, cellulose (S-CL) activity, and bacterial, fungal, and nematode community composition from March to December 2020 at Guangxi University, China. Treatments included two planting patterns, that is, SR and traditional planting (TP) and six N fertilizer with 0, 100, 150, 200, 250, and 300 kg N ha–1. Straw returning significantly increased soil fertility, enzymatic activities, community diversity, and composition of bacterial and fungal communities compared to TP. Nitrogen fertilizer application increased soil fertility and enzymes and decreased the richness of bacterial and fungal communities. In SR added plots, the dominated bacterial phyla were Proteobacteria, Acidobacterioia, Nitrospirae, Chloroflexi, and Actinobacteriota; whereas fungal phyla were Ascomycota and Mortierellomycota and nematode genera were Pratylenchus and Acrobeloides. Co-occurrence network and redundancy analysis (RDA) showed that TN, SOC, and S-SC were closely correlated with bacterial community composition. It was concluded that the continuous SR and N fertilizer improved soil fertility and improved soil bacterial, fungal, and nematode community composition.

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“…According to a study by Zeng et al (2016), dehydrogenase activity and the population of Actinobacteria did not improve when high nitrogen doses were applied to maize fields and had an adverse impact on soil microbes (Muhammad et al, 2021a). Sawicka et al (2020) suggest that root exudates are a great source of nutrients for bacteria, particularly those residing in the rhizosphere., As a result, mineral nitrogen fertilization increases the population of bacteria in the soil because of the increased amount of nitrogen in the soil and changes in its physio-chemical properties (Burns et al, 2013;Muhammad et al, 2021b). Fertilization provides the essential nutrients for plant growth and development and improves soil quality by increasing nutrient absorption rates (Hou et al, 2020).…”

Section: Introductionmentioning

confidence: 99%

Irrigation and Nitrogen Fertilization Alter Soil Bacterial Communities, Soil Enzyme Activities, and Nutrient Availability in Maize Crop

et al. 2022

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Irrigation and nitrogen (N) fertilization rates are widely used to increase crop growth and yield and promote the sustainable production of the maize crop. However, our understanding of irrigation and N fertilization in the soil microenvironment is still evolving, and further research on soil bacterial communities under maize crop with irrigation and N management in subtropical regions of China is needed. Therefore, we evaluated the responses of two irrigation levels (low and high irrigation water with 60 and 80% field capacity, respectively) and five N fertilization rates [i.e., control (N0), N200 (200 kg N ha−1), N250 (250 kg N ha−1), N300 (300 kg N ha−1), and N350 (350 kg N ha−1)] on soil bacterial communities, richness, and diversity. We found that both irrigation and N fertilization significantly affected bacterial richness, diversity index, and number of sequences. Low irrigation with N300 treatment has significantly higher soil enzymes activities, soil nutrient content, and bacterial alpha and beta diversity than high irrigation. In addition, the Proteobacteria, Actinobacteriota, Chloroflexi, and Firmicutes were the dominant bacterial phyla under both irrigation regimes. The acidic phosphates, acidic invertase, β-glucosidase, catalase, cellulase, and urease were positively correlated with the Shannon index under both low and high irrigation. Therefore, low irrigation improves soil nutrient utilization by boosting soil enzyme activity, directly affecting soil bacterial communities. It was concluded that greater soil nutrients, enzyme activities with higher bacterial diversity are the main indicators of soil reactivity to low irrigation water and N300 for maintaining soil fertility and soil microbial community balance.

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Cover cropping enhances soil microbial biomass and affects microbial community structure: A meta-analysis

Cited by 157 publications

References 52 publications

Stover return and nitrogen application affect soil organic carbon and nitrogen in a double‐season maize field

Stover return and nitrogen application affect soil organic carbon and nitrogen in a double‐season maize field

Straw Return and Nitrogen Fertilization to Maize Regulate Soil Properties, Microbial Community, and Enzyme Activities Under a Dual Cropping System

Irrigation and Nitrogen Fertilization Alter Soil Bacterial Communities, Soil Enzyme Activities, and Nutrient Availability in Maize Crop

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