Soil microbial-root and microbial-rhizosphere processes to increase nitrogen availability and retention in agroecosystems

Jackson, Louise E.; Bowles, Timothy M.; Hodson, Amanda K.; Lazcano, Cristina

doi:10.1016/j.cosust.2012.08.003

Cited by 41 publications

(21 citation statements)

References 45 publications

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“…The intensity and forms of different plant species influenced in N-cycle require further studying. As reported by [31], in order to increase the availability of inorganic N through the action of root exudates, the N-microbial mineralization depends on C availability and labile N. Depending on the type of exudation, the losses of N 2 to atmosphere can be increased due to reduction of N 2 O to N 2 [31]. The importance of microorganism in improving N through mineralization is crucial in soil, which needs more researches in forage grass to improve our knowledge in N dynamic into this production system.…”

Section: New Perspectives In Forage Cropssupporting

confidence: 67%

Best Management Practices (BMPs) for Nitrogen Fertilizer in Forage Grasses

Serra¹,

Marchetti²,

Dupas³

et al. 2018

New Perspectives in Forage Crops

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There is a concern about the growing population and limitation in natural resources which are taking the population to direct its agricultural systems into a more productive and efficient activity, looking to avoid a negative impact on the surrounding environment. The industry energy expended to produce nitrogen (N)-fertilizer is considered an indirect consumption of energy in agriculture, which is higher with an increasing forage yield. Nitrogen is the key nutrient associated with high-yielding production in forage grass and grain crops. The aim of this chapter is to introduce the best management practices (BMPs) for N-fertilizer application in forage grasses to improve N-use efficiency, since the most economical way to feed livestock is forage plants where its potential biomass production is not well explored. The BMPs basically follow three management practices: (1) soil nutrient availability and forage requirement, (2) fertilizer application, and (3) decrease in nutrient losses from soil. In order to take a decision on applying N-fertilizer to accomplish forage grasses production with social, economic, and environmental benefits, the N-fertilizer use in forage grasses is going to follow the "Right rate, Right source, Right place, and Right time (4R) nutrient stewardship." The application of the 4R's nutrients stewardship is directly associated with economic, social, and environmental impact. The capacity of the 4R's implementation worldwide turns into a best guide to improve the striving of better N-use efficiency in forage grass. The 4R's are interrelated; thus, the recommendation of N-fertilizer rates cannot be prescribed without the combination of the 4R's where a whole system to be followed should be considered to decide about N-fertilizer in pasture. Consequently, any decision in one of the 4R's is going to affect the expected N-fertilizer results and dry matter production.

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Section: New Perspectives In Forage Cropssupporting

confidence: 67%

Best Management Practices (BMPs) for Nitrogen Fertilizer in Forage Grasses

Serra¹,

Marchetti²,

Dupas³

et al. 2018

New Perspectives in Forage Crops

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show abstract

“…2,000 mg N g À1 soil (Yevdokimov et al, 2008)). Following addition of organic manure, soil microbial communities usually experience increases in biomass and activity that release nutrients in plantavailable forms promoting plant vegetative growth and contributing to crop productivity (Kallenbach and Grandy, 2011;Jackson et al, 2012). Feng et al (2015) revealed that the size of soil bacterial community increased in a long-term organic manure fertilized alkaline soil in the North China Plain (NCP).…”

Section: Introductionmentioning

confidence: 99%

Soil microbial community structure and function are significantly affected by long-term organic and mineral fertilization regimes in the North China Plain

Cooper

Zhifang

et al. 2015

Applied Soil Ecology

159

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“…Appropriate agronomic practices need to be developed to supplement the addition of BNIs by Brachiaria's shoot tissues , in addition to that added from the root systems. Increased reliance on soil microbial root and microbial rhizosphere processes through 'ecological intensification' in agroecosystems generate environmental benefits and decrease reliance on fossil fuel-based fertilizers (Jackson et al, 2012). Thus, multi-disciplinary efforts are needed for crop and forage genetic improvement in the BNI capacity coupled with agronomic practices in suitable cropping systems that could be used to utilize BNI function to promote low-nitrifying production systems in agriculture.…”

Section: Biological Nitrification Inhibition (Bni)mentioning

confidence: 99%

Potential for biological nitrification inhibition to reduce nitrification and N2O emissions in pasture crop–livestock systems

Subbarao

Rao

Nakahara

et al. 2013

Animal

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Agriculture and livestock production systems are two major emitters of greenhouse gases. Methane with a GWP (global warming potential) of 21, and nitrous oxide (N 2 O) with a GWP of 300, are largely emitted from animal production agriculture, where livestock production is based on pasture and feed grains. The principal biological processes involved in N 2 O emissions are nitrification and denitrification. Biological nitrification inhibition (BNI) is the natural ability of certain plant species to release nitrification inhibitors from their roots that suppress nitrifier activity, thus reducing soil nitrification and N 2 O emission. Recent methodological developments (e.g. bioluminescence assay to detect BNIs in plant root systems) have led to significant advances in our ability to quantify and characterize the BNI function. Synthesis and release of BNIs from plants is a highly regulated process triggered by the presence of NH 4 1 in the rhizosphere, which results in the inhibitor being released precisely where the majority of the soil-nitrifier population resides. Among the tropical pasture grasses, the BNI function is strongest (i.e. BNI capacity) in Brachiaria sp. Some feed-grain crops such as sorghum also have significant BNI capacity present in their root systems. The chemical identity of some of these BNIs has now been established, and their mode of inhibitory action on Nitrosomonas has been characterized. The ability of the BNI function in Brachiaria pastures to suppress N 2 O emissions and soil nitrification potential has been demonstrated; however, its potential role in controlling N 2 O emissions in agro-pastoral systems is under investigation. Here we present the current status of our understanding on how the BNI functions in Brachiaria pastures and feed-grain crops such as sorghum can be exploited both genetically and, from a production system's perspective, to develop low-nitrifying and low N 2 O-emitting production systems that would be economically profitable and ecologically sustainable.

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Soil microbial-root and microbial-rhizosphere processes to increase nitrogen availability and retention in agroecosystems

Cited by 41 publications

References 45 publications

Best Management Practices (BMPs) for Nitrogen Fertilizer in Forage Grasses

Best Management Practices (BMPs) for Nitrogen Fertilizer in Forage Grasses

Soil microbial community structure and function are significantly affected by long-term organic and mineral fertilization regimes in the North China Plain

Potential for biological nitrification inhibition to reduce nitrification and N2O emissions in pasture crop–livestock systems

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