A first-year maize/cassava relay intercropping system improves soil nutrients and changes the soil microbial community in the symbiotic period

Article Agriculture, Multidisciplinary

A first-year melon/cowpea intercropping system improves soil nutrients and changes the soil microbial community

Jessica Cuartero et al.

Summary: The melon/cowpea intercropping system can optimize land use, increase melon yield, and benefit soil microbial community and environment.

AGRICULTURE ECOSYSTEMS & ENVIRONMENT (2022)

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Article Geosciences, Multidisciplinary

Global patterns and predictors of soil microbial biomass carbon, nitrogen, and phosphorus in terrestrial ecosystems

Zhiqiang Wang et al.

Summary: Soil microbes play crucial roles in regulating nutrient cycling in terrestrial ecosystems. This study provides comprehensive global-scale information on the distribution of soil microbial biomass carbon, nitrogen, and phosphorus, and emphasizes the importance of soil organic carbon in predicting these nutrient concentrations. The generated global maps of soil microbial nutrients can be used to enhance Earth system models and improve our understanding of terrestrial nutrient cycling.

CATENA (2022)

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Article Agronomy

Nitrogen uptake and biochemical activity in maize rhizosphere during growth on acidic and neutralized soils

Laura Giagnoni et al.

Summary: This study aimed to investigate the effects of liming and no tillage on the pH stability and inorganic N uptake in the rhizosphere of maize plants on an acidic soil depleted in organic matter. The results showed that maize plants grown on acidic untilled soil preferred NH4+-N uptake over NO3--N uptake. Additionally, soil respiration and enzyme activities were generally higher in the rhizosphere of untilled soils, while microbial biomass was higher in the rhizosphere of the amended soils.

RHIZOSPHERE (2022)

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Article Agronomy

Cassava-maize intercropping systems in southern Nigeria: Radiation use efficiency, soil moisture dynamics, and yields of component crops

Charles Chigemezu Nwokoro et al.

Summary: Efficient utilization of incident solar radiation and rainwater conservation in rain-fed smallholder cropping systems can be achieved by intercropping 40,000 maize plants ha(-1) with 12,500 cassava plants ha(-1) and managing the system with the maize fertilizer regime, resulting in improved interception of photosynthetically active radiation, radiation use efficiency, soil moisture retention, and grain yield.

FIELD CROPS RESEARCH (2022)

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Article Agronomy

Optimizing arrangement and density in maize and alfalfa intercropping and the reduced incidence of the invasive fall armyworm (Spodoptera frugiperda) in southern China

Kaixian Wu et al.

Summary: This study found that increasing the number of alfalfa rows and maize density can improve the land equivalent ratio of narrow-strip intercropping, with the 1M3A arrangement under high maize density showing synergistic production of maize and alfalfa. Intercropping significantly reduced the incidence of the invasive fall armyworm, highlighting the potential for ecological pest control and sustainable maize production through intercropping.

FIELD CROPS RESEARCH (2022)

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Article Agronomy

Effects of expanding cassava planting and harvesting windows on root yield, starch content and revenue in southwestern Nigeria

Rebecca Oiza et al.

Summary: Cassava, an important staple crop in Nigeria, has varying fresh root yields and starch contents depending on planting and harvest times. The study found that the best time for planting is September and December, while the optimal harvest periods are 9 and 13 months after planting in March and November respectively. The timing of harvest also significantly impacts farmers' income and profit, making it crucial for them to choose the right time for maximum profit.

FIELD CROPS RESEARCH (2022)

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Article Soil Science

Different factors control organic matter degradation in bulk and rhizosphere soil from the top- and subsoils of three forest stands

Michael Herre et al.

Summary: The input of substrates and nutrients into deeper soil layers is limited to small regions of the bulk soil through living roots and preferential flow paths, which can stimulate a more abundant and diverse microbial community. This study aimed to investigate if SOC mineralization is differentially limited by nutrients and substrates in bulk and rhizosphere soil, and if the limitation varies among different sites.

SOIL BIOLOGY & BIOCHEMISTRY (2022)

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Article Agronomy

Pepper-maize intercropping affects the occurrence of anthracnose in hot pepper

Yangyang Gao et al.

Summary: The intercropping system of hot pepper and maize showed significant reduction in anthracnose incidence and delayed onset of the disease, as well as improved marketable fruit percentage and yield compared to monocropping. The mechanisms behind the reduction of anthracnose in the intercropping system included interference with spore dispersal, decreased sunscald incidence, and altered microclimate. The P6|M1 intercropping system had equivalent fruit yield to monocropping and increased land utilization efficiency, making it a favorable measure for controlling hot pepper anthracnose.

CROP PROTECTION (2021)

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Review Geosciences, Multidisciplinary

Nitrogen contamination and bioremediation in groundwater and the environment: A review

Justin G. Morrissy et al.

Summary: Nitrogen contamination of groundwater and the environment has become a growing concern, leading to gaps in fundamental knowledge and the need for updating current remediation strategies. The search for more technically and economically feasible remediation strategies continues in the face of ongoing research addressing these knowledge gaps.

EARTH-SCIENCE REVIEWS (2021)

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Article Microbiology

Phosphorus availability increases pathobiome abundance and invasion of rhizosphere microbial networks by Ralstonia

Pengfa Li et al.

Summary: This study investigated the complex interactions among pathogens, native microbiota, and physicochemical properties in disease emergence or suppression. The research found significant differences in the distribution of pathogenic and beneficial microbes between disease-conducive and -suppressive rhizosphere soils, as well as varying co-occurrences between Ralstonia and native microorganisms in these soils. Additionally, the study predicted that high soil phosphorus conditions could lead to soil invasion by Ralstonia and compromise plant health.

ENVIRONMENTAL MICROBIOLOGY (2021)

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Article Environmental Sciences

Identification of Cd-resistant microorganisms from heavy metal-contaminated soil and its potential in promoting the growth and Cd accumulation of bermudagrass

Yan Xie et al.

Summary: Phytoremediation with the help of microorganisms can significantly improve plant growth and metal solubilization in heavy metal contaminated soils. The presence of Cd-resistant fungal strain could enhance plant growth, Cd accumulation, and tolerance in bermudagrass under Cd stress. Certain microbial taxa in polluted soil contribute to metal accumulation and plant growth improvement in phytoremediation processes.

ENVIRONMENTAL RESEARCH (2021)

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Article Agronomy

Film mulching affects root growth and function in dryland maize-soybean intercropping

Wei Zhang et al.

Summary: This study compared two maize-soybean intercropping systems in rainfed farmland and found that intercropped maize exhibited different root systems under varied water conditions, leading to higher grain yield than sole maize. Film mulching of intercropped maize optimized root growth and function, resulting in significantly improved grain yield advantage in the intercropping system.

FIELD CROPS RESEARCH (2021)

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Article Engineering, Environmental

Intercropping improves heavy metal phytoremediation efficiency through changing properties of rhizosphere soil in bamboo plantation

Fangyuan Bian et al.

Summary: The intercropping of Moso bamboo and Sedum plumbizincicola can increase the removal efficiency of heavy metals from polluted soils, reduce the content of organic matter, available nutrients, and heavy metals in the soil, and increase bacterial diversity.

JOURNAL OF HAZARDOUS MATERIALS (2021)

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Article Soil Science

Intercropping and N application enhance soil dissolved organic carbon concentration with complicated chemical composition

Ding Wang et al.

Summary: The study found that nitrogen application increases soil DOC concentration with a quadratic relationship, and intercropping leads to higher DOC concentration and accumulation compared to monocropping. Nitrogen application also promotes the contents of amines and aromatic compounds in soil DOC, contributing to the improvement of humification and aromatization in soil.

SOIL & TILLAGE RESEARCH (2021)

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Article Soil Science

Combined organic amendments and mineral fertilizer application increase rice yield by improving soil structure, P availability and root growth in saline-alkaline soil

Mengmeng Chen et al.

Summary: The study revealed that organic amendments can improve soil structural stability and phosphorus availability, leading to enhanced plant growth and yield. The use of organic amendments has a positive impact on soil quality and crop productivity.

SOIL & TILLAGE RESEARCH (2021)

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Article Agronomy

The importance of aboveground and belowground interspecific interactions in determining crop growth and advantages of peanut/maize intercropping

Nianyuan Jiao et al.

Summary: The intercropping of maize and peanut can result in greater yields, with aboveground and belowground interspecific interactions playing important roles in promoting plant growth and grain yield. Nitrogen and phosphorus levels can also enhance yield through aboveground interspecific competition for maize and belowground interspecific facilitation for peanut.

CROP JOURNAL (2021)

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Article Soil Science