Grain legume-cereal intercropping enhances the use of soil-derived and biologically fixed nitrogen in temperate agroecosystems. A meta-analysis

Rodriguez, Carolina; Carlsson, Georg; Englund, Jan‐Eric; Flöhr, Adam; Pelzer, Elise; Jeuffroy, Marie‐Hélène; Makowski, David; Jensen, Erik Steen

doi:10.1016/j.eja.2020.126077

Cited by 139 publications

(97 citation statements)

References 65 publications

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“…Intercropping of cereals and grain legumes will reduce competition for soil N sources, since legumes can use atmospheric dinitrogen in symbiosis with Rhizobium bacteria and may in this way reduce the intensity of the competition for soil nitrogen (N), allowing the cereals to use a larger proportion of the soil N in relation to the plant density. This was documented in a meta-analysis based on stable nitrogen isotope studies by Rodriguez et al (2020), showing that the response ratio of soil N accumulation in intercropped cereal to solely cropped cereal was greater than 1. This indicates that on average, each plant in the intercropping system accumulated 53-67% more soil nitrogen than a cereal plant grown alone (Rodriguez et al, 2020).…”

Section: Improved Use Of Nitrogen Sources and Reduced Need For N Fertilizer In Grain Legume-cereal Intercropping Systemsmentioning

confidence: 86%

“…This was documented in a meta-analysis based on stable nitrogen isotope studies by Rodriguez et al (2020), showing that the response ratio of soil N accumulation in intercropped cereal to solely cropped cereal was greater than 1. This indicates that on average, each plant in the intercropping system accumulated 53-67% more soil nitrogen than a cereal plant grown alone (Rodriguez et al, 2020). Similarly, the response ratio of intercropped legumes and legumes as the sole crop was much lower than 1, with the average soil N accumulation per legume plant in intercropping systems being 47-53% lower than that in solely grain legume crops.…”

Section: Improved Use Of Nitrogen Sources and Reduced Need For N Fertilizer In Grain Legume-cereal Intercropping Systemsmentioning

confidence: 86%

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Diversifying European agricultural systems by intercropping

Jensen

Chongtham

Dhamala

et al. 2020

IJANR

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Cropping system diversification is a key factor in developing more sustainable cropping and food systems. The agroecological practice of intercropping, meaning the simultaneous cultivation of two or more species in the same field, has recently gained renewed interest as a means of ecological intensification in European agricultural research. We discuss some recent research developments regarding 1) intercropping for ecological intensification in agroecological and conventional cropping systems, 2) studies on nitrogen resource use by cereal-grain legume intercropping cultivation, 3) the role of intercropping in the management of biotic stressors, especially weeds, and 4) intercropping as a means of creating cropping systems that are more resilient to the abiotic and biotic stress associated with climate change. Finally, we propose methods for the greater adoption of intercropping in European agriculture by unlocking farming systems from upstream and downstream barriers, with the aim of developing more sustainable agricultural and food systems.

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Section: Improved Use Of Nitrogen Sources and Reduced Need For N Fertilizer In Grain Legume-cereal Intercropping Systemsmentioning

confidence: 86%

Section: Improved Use Of Nitrogen Sources and Reduced Need For N Fertilizer In Grain Legume-cereal Intercropping Systemsmentioning

confidence: 86%

Diversifying European agricultural systems by intercropping

Jensen

Chongtham

Dhamala

et al. 2020

IJANR

Self Cite

View full text Add to dashboard Cite

show abstract

“…Resource partitioning is more likely to occur when functionally different crops are combined [73,74]. For example, cereals intercropped with legumes can improve nitrogen fixation, better weed control, and high yields [75][76][77]. Corre-Hellou et al [78] reported pea-barley intercropping helped reduce weed biomass by threefold compared to pea monoculture.…”

Section: Intercroppingmentioning

confidence: 99%

Crop Diversification for Improved Weed Management: A Review

Sharma¹,

Shrestha²,

Kunwar³

et al. 2021

Preprint

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Weeds are among the major constraints to any crop production system, reducing productivity and profitability. Herbicides are among the most effective methods to control weeds, and reliance on herbicides for weed control has increased significantly with the advent of herbicide-resistant crops. Unfortunately, over-reliance on herbicides leads to environmental-health issues and herbicide-resistant weeds, causing human-health and ecological concerns. Crop diversification can help manage weeds sustainably in major crop production systems. It acts as an organizing principle under which technological innovations and ecological insights can be combined to manage weeds sustainably. Diversified cropping can be defined as the conscious inclusion of functional biodiversity at temporal and/or spatial levels to improve the productivity and stability of ecosystem services. Crop diversification helps to reduce weed density by negatively impacting weed seed germination and weed growth. Additionally, diversified farming systems are more resilient to climate change than monoculture systems and provide better crop yield. However, there are a few challenges to adopting a diversified cropping system, which ranges from technology innovations, government policies, farm-level decisions, climate change, and market conditions. In this review, we discuss how crop diversification supports sustainable weed management, the challenges associated with it, and the future of weed management with respect to the diversification concept.

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“…Numerous studies have demonstrated that reasonable intercropping not only increases farmland biodiversity, improves the productivity and stability of farmland ecosystem, but also signi cantly improves crop mineral nutrition and increases nutrient utilization e ciency (Vandermeer 1990;Raza et al 2020). For a long time, studies on intercropping to increase nutrient utilization mainly focused on nitrogen (N) (Fujita et al 1992;Cong et al 2015;Rodriguez et al 2020), phosphorus (P) (Li et al 2007;Dissanayaka et al 2015;Messaoudi et al 2020), and some trace elements such as iron (Fe) and zinc (Zn) (Zuo et al 2000;Xiong et al 2013) of upland crops. Reasonable intercropping can reduce the nutrient competition between species due to the difference in roots niche, expand the range of nutrients uptake by roots, and promote the e cient use of soil nutrients (Li et al 2014;Brooker et al 2015).…”

Section: Introductionmentioning

confidence: 99%

Plant-mediated rhizospheric interactions in rice-water spinach intercropping enhance Si uptake by rice

Ning

Wang

et al. 2021

Preprint

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Aims Although biodiversity utilization in paddy fields has increased in recent years, silicon (Si) nutrition of rice in intercropping systems is poorly understood. On the basis of our previous study, the present research focused on deciphering the underlying mechanisms involved in rice and water spinach intercropping, which enhance Si uptake by rice.Methods We carried out a series of experiments including field, greenhouse, and incubation experiments to explore the underlying mechanisms.Results The field trials showed that rice-water spinach intercropping with different row ratios can increase Si concentration by 9.8%-52.6% and Si absorption by 34.7%-127.8% in rice leaves at ripening stage compared to rice monoculture. The pot trials further indicated that intercropping can promote rice to increase Si concentration in Si-deficient soil, with an increase of 35.9% in stems and 29.7% in leaves, and intercropping significantly increased soil water-soluble Si content by 168.1% compared to rice monoculture. Further research indicated that there was an interaction between rice roots and water spinach roots under intercropping conditions, which not only induced the up-regulated expression of Si transporter genes in rice roots (OsLsi1, OsLsi2) and stems (OsLsi6), but also stimulated rice roots to secrete more organic acids to increase Si availability in the soil. Moreover, water spinach root exudates helped the mobilization of Si in soil through proton efflux of roots. Conclusions Rice-water spinach intercropping can greatly enhance Si absorption of rice through several beneficial ways, which will have important practical significance for sustainable rice production, especially in Si-deficient soils.

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Grain legume-cereal intercropping enhances the use of soil-derived and biologically fixed nitrogen in temperate agroecosystems. A meta-analysis

Cited by 139 publications

References 65 publications

Diversifying European agricultural systems by intercropping

Diversifying European agricultural systems by intercropping

Crop Diversification for Improved Weed Management: A Review

Plant-mediated rhizospheric interactions in rice-water spinach intercropping enhance Si uptake by rice

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