Impact of soybean cropping frequency on soil carbon storage in Mollisols and Vertisols

Novelli, Leonardo Esteban; Caviglia, Octavio Pedro; Melchiori, Roberto

doi:10.1016/j.geoderma.2011.09.015

Cited by 70 publications

(71 citation statements)

References 36 publications

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“…In both sites, the technology was unable to maintain existing SOC stocks. Novelli et al [69] found that the SOC storage was negatively associated with the soybean cropping frequency in the cropping sequences. After the introduction of agriculture in site A, there was a rapid loss of SOC (25%) during the first ten years, followed by a period with a lower loss (15%) in 23 years.…”

Section: Resultsmentioning

confidence: 99%

Effect of Continuous Agriculture of Grassland Soils of the Argentine Rolling Pampa on Soil Organic Carbon and Nitrogen

Delaye¹,

Irizar²,

Andriulo³

et al. 2013

Applied and Environmental Soil Science

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Long-term soil organic carbon (SOC) and soil organic nitrogen (SON) following cultivation of grassland soils (100/120-year tillage (T) + 20/30-year no tillage (NT)) of the Rolling Pampa were studied calibrating the simple AMG model coupled with the natural13C abundance measurements issued from long-term experiments and validating it on a data set obtained by a farmer survey and by long-term NT experiments. The multisite survey and NT trials permitted coverage of the history of the 140 years with agriculture. The decrease in SOC and SON storage that occurred during the first twenty years by a loss through biological activity was 27% for SOC and 32% for SON. The calibrated model described the SOC storage evolution very well and permitted an accurate simultaneous estimation of their three parameters. The validated model simulated well SOC and SON evolution. Overall, the results analyzed separately for the T and NT period indicated that the active pool has a rapid turnover (MRT ~9 and 13 years, resp.) which represents 50% of SOC in the native prairie soil and 20% of SOC at equilibrium after NT period. NT implementation on soils with the highest soil organic matter reserves will continue to decrease (17%) for three decades later under current annual addition.

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Section: Resultsmentioning

confidence: 99%

Effect of Continuous Agriculture of Grassland Soils of the Argentine Rolling Pampa on Soil Organic Carbon and Nitrogen

Delaye¹,

Irizar²,

Andriulo³

et al. 2013

Applied and Environmental Soil Science

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“…Tendency of OC was NE>PAP>GAP (Table 2). High OC at both sampling depths of NE (data not shown) could be explained by the lack of disturbance and the presence of active roots the year-round (Novelli et al, 2011;Six, Elliott, Paustian, & Doran, 1998).…”

Section: Land-use Edaphic Properties and Active Diazotrophic Commmentioning

confidence: 95%

“…Agricultural management in the extensive Pampa and Chaco plains of Argentina relies on no‐till farming (source: Aapresid, http://www.aapresid.org.ar) that accounts for about 27 million hectares, with an increasing simplification in crop sequence based mainly on soybean monoculture (Durán, Morrás, Studdert, & Liu, ; Viglizzo et al., ). Several adverse effects have been associated with this simplification such as lower organic carbon (OC), lower aggregate stability, modification of soil porosity due to a diminution of its total volume, as well as higher bulk density and development of platy structures (Chagas, Santanatoglia, Castiglioni, & Marelli, ; Novelli, Caviglia, & Melchiori, ; Novelli, Caviglia, Wilson, & Sasal, ; Sasal, Andriulo, & Taboada, ). Hence, the way soils are used in agriculture can deeply modify their architecture constitution (Pierce, Fortin, & Staton, ) with significant consequences on the soil structure and the soil–water interactions (Castiglioni, Behrends Kraemer, & Morras, ; Raynaud & Nunan, ; Reynolds, Bowman, Drury, Tana, & Lu, ).…”

Section: Introductionmentioning

confidence: 99%

Analysis of nifH‐RNA reveals phylotypes related to Geobacter and Cyanobacteria as important functional components of the N₂‐fixing community depending on depth and agricultural use of soil

et al. 2017

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In this survey, a total of 80 787 reads and 28 171 unique NifH protein sequences were retrieved from soil RNA. This dataset extends our knowledge about the structure and diversity of the functional diazotrophic communities in agricultural soils from Argentinean Pampas. Operational taxonomic unit (OTU)‐based analyses showed that nifH phylotypes related to Geobacter and Anaeromyxobacter (44.8%), Rhizobiales (29%), Cyanobacteria (16.7%), and Verrucomicrobiales (8%) are key microbial components of N2 fixation in soils associated with no‐till management and soil depth. In addition, quantification of nifH gene copies related to Geobacter and Cyanobacteria revealed that these groups are abundant in soils under maize–soybean rotation and soybean monoculture, respectively. The correlation of physicochemical soil parameters with the diazotrophic diversity and composition showed that soil stability and organic carbon might contribute to the functional signatures of particular nifH phylotypes in fields under no‐till management. Because crop production relies on soil‐borne microorganism's activities, such as free N2 fixation, the information provided by our study on the diazotrophic population dynamics, associated with the edaphic properties and land‐use practices, represents a major contribution to gain insight into soil biology, in which functionally active components are identified.

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“…Some evidence from field experiments suggest that reducing fallow periods, or increasing CHF, increases soil carbon depending on the tillage adopted, fertilization and crop cycle in the United States [54,55]. In general however increased cropping frequency reduces soil organic carbon [56,57], the diversity of soil microbiota [58], arthropod [59], and other species [60] especially if higher CHF leads to conventional cropping [61,62] and landscape simplification [63]. Increased cropping frequency will also be accompanied with other agricultural inputs such as irrigation and fertilization [64], which could have impacts on water quality and aquatic ecosystems [65].…”

Section: Estimating the Potential For Increasing Harvest Frequencymentioning

confidence: 99%

Increasing global crop harvest frequency: recent trends and future directions

Ray

Foley

2013

Environ. Res. Lett.

187

103

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The world's agricultural systems face the challenge of meeting the rising demands from population growth, changing dietary preferences, and expanding biofuel use. Previous studies have put forward strategies for meeting this growing demand by increasing global crop production, either expanding the area under cultivation or intensifying the crop yields of our existing agricultural lands. However, another possible means for increasing global crop production has received less attention: increasing the frequency of global cropland harvested each year. Historically, many of the world's croplands were left fallow, or had failed harvests, each year, foregoing opportunities for delivering crop production. Furthermore, many regions, particularly in the tropics, may be capable of multiple harvests per year, often more than are harvested today.Here we analyze a global compilation of agricultural statistics to show how the world's harvested cropland has changed. Between 2000 and 2011, harvested land area grew roughly 4 times faster than total standing cropland area. Using a metric of cropland harvest frequency (CHF)-the ratio of land harvested each year to the total standing cropland-and its recent trends, we identify countries that harvest their croplands more frequently, and those that have the potential to increase their cropland harvest frequency. We suggest that a possible 'harvest gap' may exist in many countries that represents an opportunity to increase crop production on existing agricultural lands. However, increasing the harvest frequency of existing croplands could have significant environmental and social impacts, which need careful evaluation.

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Impact of soybean cropping frequency on soil carbon storage in Mollisols and Vertisols

Cited by 70 publications

References 36 publications

Effect of Continuous Agriculture of Grassland Soils of the Argentine Rolling Pampa on Soil Organic Carbon and Nitrogen

Effect of Continuous Agriculture of Grassland Soils of the Argentine Rolling Pampa on Soil Organic Carbon and Nitrogen

Analysis of nifH‐RNA reveals phylotypes related to Geobacter and Cyanobacteria as important functional components of the N₂‐fixing community depending on depth and agricultural use of soil

Increasing global crop harvest frequency: recent trends and future directions

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Impact of soybean cropping frequency on soil carbon storage in Mollisols and Vertisols

Cited by 70 publications

References 36 publications

Effect of Continuous Agriculture of Grassland Soils of the Argentine Rolling Pampa on Soil Organic Carbon and Nitrogen

Effect of Continuous Agriculture of Grassland Soils of the Argentine Rolling Pampa on Soil Organic Carbon and Nitrogen

Analysis of nifH‐RNA reveals phylotypes related to Geobacter and Cyanobacteria as important functional components of the N2‐fixing community depending on depth and agricultural use of soil

Increasing global crop harvest frequency: recent trends and future directions

Contact Info

Product

Resources

About

Analysis of nifH‐RNA reveals phylotypes related to Geobacter and Cyanobacteria as important functional components of the N₂‐fixing community depending on depth and agricultural use of soil