Biological nitrogen fixation in soybean in Argentina: relationships with crop, soil, and meteorological factors

Collino, D. J.; Salvagiotti, Fernando; Perticari, Alejandro; Piccinetti, Carlos Fabián; Ovando, Gustavo; Urquiaga, Segundo; Racca, R. W.

doi:10.1007/s11104-015-2459-8

Cited by 109 publications

(64 citation statements)

References 40 publications

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“…However, total C and N pools were not appreciatively altered by management at FIBL, and high N mineralization was observed across all management systems (possibly a legacy effect that made it difficult to ascertain management effects on BNF). In keeping with this hypothesis, overall FIBL soybean N fixation was 30 to 50%, modest rates relative to the >60% observed in our study, as well as others that have quantified soybean BNF (Oberson et al, 2007;Collino et al, 2015). Clearly, the interactions of weather and management practices on BNF are complex, and more studies are needed that tackle this complexity over time and space (Table 2).…”

Section: Biological Nitrogen Fixation Regulationsupporting

confidence: 86%

“…We note, however, in this on-farm study other soil properties, for example, texture and total N, were stronger BNF predictors than soil inorganic N (Schipanski et al, 2010). High variability of BNF associated with soil environmental properties has been observed previously (Herridge and Brockwell, 1988;Schipanski et al, 2010;Collino et al, 2015), but our study highlights that seasonal effects can be even more important than soil properties, with twofold greater total amount of BNF fixed under mesic weather conditions compared to years with unfavorable weather.…”

Section: Biological Nitrogen Fixation Regulationcontrasting

confidence: 42%

“…To understand internal regulation mechanisms in a field environment we used a long-term row-crop experiment to monitor labile N and C pools, quantify BNF, and assess crop response to historic N sources. Our focus crop was soybean, as a major BNF source in field crop systems around the globe (Herridge et al, 2008;Collino et al, 2015). We also evaluated BNF in red clover, which is one of the more widely grown cover crops in North American field crop production (Snapp et al, 2005).…”

Section: Compost Legacy Down-regulates Biological Nitrogen Fixation Imentioning

confidence: 99%

“…A comprehensive fi eld survey of soybean in Argentina highlighted the variation in BNF associated with this important N-fi xing crop (Collino et al, 2015). Soil properties were shown to play an important role in regulation of soybean BNF, as well as air temperature in high potential soybean production areas.…”

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confidence: 99%

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Compost Legacy Down‐Regulates Biological Nitrogen Fixation in a Long‐Term Field Experiment

et al. 2017

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Core Ideas Compost‐based management enhanced soil organic matter in a Michigan Alfisol. Nitrogen fixation rates in soybean and red clover varied with management history. Weather markedly influenced the quantity of N fixed in three crop systems. Soil labile pool influence on N fixation can act as an internal regulator. Biological nitrogen fixation (BNF) is a fundamental process relied on in agriculture, yet few field studies have examined regulation through soil inorganic N feedbacks or considered seasonal effects. In a Michigan long‐term field experiment we examined soil labile C and N pools and impact on BNF in two species, over multiple years. The 15N natural abundance method was used to quantify BNF, with nodulated and non‐nodulated soybean [Glycine max (L.) Merr.] isolines and red clover (Trifolium pratense L.). Soil organic C status of plots was consistent with a gradient established through historical inputs: 0.8% (fertilizer management) to 0.9% (+ cover crop) to 1.2% (+ compost + cover crop). The fraction of nitrogen derived from atmosphere (fNdfa) in red clover and soybean over 3 yr was 61 to 58% with compost management, and 71 to 72% with fertilizer. This represented a downregulation of 19% (red clover) and 15% (soybean) in compost and cover crop managed plots, relative to inorganic fertilizer. In addition to management effects, we found that weather markedly influenced the total amount of N fixation over the 3 yr of the study. A mesic season supported vigorous soybean growth and 195 kg N ha−1 BNF, compared to 95 and 90 kg N ha−1 BNF in a dry and an excessively wet season. This study found that compost‐based management increased pools of labile C and N that internally downregulated BNF, while enhancing soybean yield compared to conventional management.

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Section: Biological Nitrogen Fixation Regulationsupporting

confidence: 86%

Section: Biological Nitrogen Fixation Regulationcontrasting

confidence: 42%

Section: Compost Legacy Down-regulates Biological Nitrogen Fixation Imentioning

confidence: 99%

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confidence: 99%

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Compost Legacy Down‐Regulates Biological Nitrogen Fixation in a Long‐Term Field Experiment

et al. 2017

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“…are currently used worldwide, since they fix N 2 in symbiosis with leguminous crops. The inoculation of soybean with the optimal species/strain has a significant impact on the yield and quality [50,51]. A positive response to inoculation depends on limited N availability and that the inoculant bacteria is present in a higher concentration and has greater capacity to compete than native populations.…”

Section: Microorganisms Used For Crop N Nutritionmentioning

confidence: 99%

Emerging and Established Technologies to Increase Nitrogen Use Efficiency of Cereals

et al. 2016

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Nitrogen (N) fertilizers are one of the most expensive inputs in agricultural settings. Additionally, the loss of N increases costs, contributes to soil acidification, and causes off-site pollution of the air, groundwater and waterways. This study reviews current knowledge about technologies for N fertilization with potential to increase N use efficiency and reduce its negative effects on the environment. Classic inorganic sources such as urea and ammonium sulfate are the major sources utilized, while controlled N release fertilizers have not been significantly adopted for cereals and oil crops. Microorganisms, with the exception of Rhizobium sp. in soybeans, are also not widely used nowadays (e.g., plant growth-promoting bacteria and cynobacteria). The interest in implementing new N fertilization knowledge is stimulating the development of sensors to diagnose the N status and decision support systems for integrating several variables to optimize sources, rates and methods of application. Among potential new technologies we identified the incipient development of nanofertilizers, nutrient formulations to coat seeds, and recycled nutrients. Furthermore, increasing concern about the environmental consequences of N may facilitate the implementation of innovations outside the farm such as more effective regulations to guide N fertilization and methods to manufacture N fertilizers that are more energy-efficient and less CO 2 equivalent emitting.

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Sustainable intensification of agriculture improves soil nitrogen in the Argentinean Humid Pampas

et al. 2022

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In the Argentinean Humid Pampas, intensification practices like crop rotation, cover crops (CC), and fertilization can improve soil N balance. This study aimed to assess how intensification practices affect soil organic N (Norg), Norg in the particulate fraction (PF-Norg), and N mineralized during a short-term (7 d) anaerobic incubation (aN) in a 4-yr experiment with soybean [Glycine max (L.) Merr.]-based crop sequences. At two sites differing in initial soil organic matter (SOM), five crop sequences were evaluated: continuous soybean (Sb); continuous soybean fertilized with P and sulfur (S; Sbf); CC/PS-fertilized soybean (Sbf/CC); N-fertilized CC/PSfertilized soybean (Sbf/CCf); NPS-fertilized crop rotation (Rot). In addition, at one site we evaluated the C and N accumulation in CC dry matter, CC inclusion effect on soil inorganic N dynamics, and C and N content in soybean grain and shoots.At Site 1 (low SOM), Norg and PF-Norg increased in intensified sequences as compared with Sb and Sbf, whereas no differences among treatments were detected at Site 2 (high SOM). Also, an increase in aN was observed in intensified treatments at both sites. At Site 2, soil sampling took place at soybean sowing and harvest during two growing seasons. At soybean sowing, Sb and Sbf presented ∼30 kg NO 3 − -N ha −1 more than intensified sequences, whereas at soybean harvest this trend was the opposite. In the fallow, CC captured N, minimizing N leaching without affecting N accumulation in soybean. Our results indicate that intensification in soybean-based sequences improves soil N balances.

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Biological nitrogen fixation in soybean in Argentina: relationships with crop, soil, and meteorological factors

Cited by 109 publications

References 40 publications

Compost Legacy Down‐Regulates Biological Nitrogen Fixation in a Long‐Term Field Experiment

Compost Legacy Down‐Regulates Biological Nitrogen Fixation in a Long‐Term Field Experiment

Emerging and Established Technologies to Increase Nitrogen Use Efficiency of Cereals

Sustainable intensification of agriculture improves soil nitrogen in the Argentinean Humid Pampas

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