Modeling the incorporation of corn (Zea mays L.) carbon from roots and rhizodeposition into soil organic matter

Molina, J. A. E.; Clapp, C. E.; Linden, D. R.; Allmaras, R. R.; Layese, M.F.; Dowdy, R. H.; Cheng, H. H.

doi:10.1016/s0038-0717(00)00117-6

Cited by 69 publications

(39 citation statements)

References 21 publications

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“…After 90 DAS shoot biomass was slightly declined but root biomass increased from initial to final crop growth stages for all the crops. The root biomass varied in maize 6.40-10.64 g, pearl millet 4.00-8.24 g, sorghum 1.27-5.18 g, rice 1.72-6.14 g, finger millet 1.41-6.08 g and soybean 1.27-3.51 g. Several studies indicated that soil N availability, although strongly altering shoot growth, does not significantly affect the dynamics of root growth at depth [7]. Among all crops, maize crop contributed maximum root biomass (10.64 g) followed by pearl millet, rice, finger millet, sorghum and soybean crops.…”

Section: Plant Biomassmentioning

confidence: 99%

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Assessing Carbon and Nitrogen Partition in Kharif Crops for Their Carbon Sequestration Potential

Kushwah

Dotaniya

Upadhyay

et al. 2014

Natl. Acad. Sci. Lett.

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A pot culture experiment was conducted to identify carbon sequestration potential among the crops such as maize, soybean, sorghum, pearl millet, finger millet and rice through estimating carbon (C) and nitrogen (N) partition in root and shoots. Plant biomass, C and N were measured and C:N, C:C, N:N, C:N ratio were calculated at 30, 50, 75, 90 DAS (days after sowing) and at crop maturity from each crop. Among the crops grown, total dry biomass was decreasing in the order of maize [ pearl millet [ sorghum [ soybean [ rice [ finger millet. The highest plant biomass was recorded in maize crop (15.82 g/ plant at 30 DAS and 44.28 g/plant at 90 DAS). There was a considerable variation observed in N:N, C:C and C:N ratio among the crops as well as at crop growth stages wise. The C:N ratio increased with crop growth from 30 DAS to crop maturity in all the crops. The C:N ratio among the crops at 30 DAS was varied from 27.53 (in soybean) to 69.66 (in rice). By balancing both plant biomass and C:N ratio, it was concluded that carbon sequestration potential of maize, sorghum and pearl millet was higher when compared to rice, finger millet and soybean.

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Section: Plant Biomassmentioning

confidence: 99%

“…The rhizodeposit C constitutes 40 % of the total root-derived C [6]. The root residues account for about 50 % of the SOC pool [7]. In plants, 1.5-3.0 times more root C than shoot C is stabilized in the SOC pool, which suggests that root biomass makes a greater contribution to soil C sequestration than aboveground residues [8].…”

Section: Introductionmentioning

confidence: 99%

Assessing Carbon and Nitrogen Partition in Kharif Crops for Their Carbon Sequestration Potential

Kushwah

Dotaniya

Upadhyay

et al. 2014

Natl. Acad. Sci. Lett.

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“…After a 15-year study, Bolinder et al (1999) gave estimates for C incorporated from maize above-ground and belowground biomass to the SOM at 7.7 to 20% and 16 to 30%, respectively. This and other studies have shown that a greater portion of maize carbon retained in the SOM originated from roots than from shoots (Balesdent and Balabane 1996;Molina et al 2001). Rhizodeposition continually contributes C into the SOM accounting for 5-21% of all photosynthetically fixed carbon released into the soil (Marschner 1995).…”

Section: Stable Carbon Isotopes and Root Zone Sommentioning

confidence: 53%

Stable carbon isotope signatures of ancient Maize agriculture at El Kinel, Guatemala

Balzotti¹,

Golden²,

Scherer³

et al. 2013

Central European Geology

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Stable C isotope studies of the soil organic matter (SOM) have delineated areas with histories of vegetation change from C 3 forest to C 4 maize (Zea mays L.) agriculture and back to the contemporary C 3 forest. The objectives of this study were to: (1) determine if land around El Kinel, Guatemala possessed a vegetative history of shifts from C 3 forest to C 4 maize agriculture in the past, (2) determine if 10 years of contemporary maize production is sufficient time to deposit an isotopic signature of C 4 plants in the root zone (top 40 cm), and (3) to examine the extractable phosphorus concentrations and δ 13 C in soils of important archaeological features that included a midden, a burial, and two ancient reservoirs (aguadas). The lack of a shift in δ 13 C greater than 3.5‰ in the top 40 cm of the contemporary maize field suggested that continual maize cultivation of more than ten years is required to create an isotopic signature for maize agriculture. Carbon isotopic evidence was found in soil profiles to confirm that long-term agriculture was practiced by ancient Maya farmers at El Kinel. The man-made aguadas did not show isotopic shifts greater than 2.3‰ in any part of the profile, indicating they were used for other purposes not associated with C 4 plant growth. The relatively low P (<30 mg kg -1 ) was found in soil at the same depth but at a distance of 30 cm from an ancient burial. The high P concentration (127 mg kg -1 ) found within millimeters of the bones implied that the P enrichment came from the remains but P remained fixed in the soil and did not migrate.

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“…Molina et al (2001) estimated that 24% of the net C fixed by corn is deposited in the soil from belowground biomass. Kmoch et al (1957) reported that the belowground root biomass from plants is similar to the aboveground residue.…”

Section: Irrigated Grain Residue Management Effects On Soil Propertiesmentioning

confidence: 99%

Irrigated Small-Grain Residue Management Effects on Soil Chemical and Physical Properties and Nutrient Cycling

Tarkalson¹,

Brown

Kok

et al. 2009

Soil Science

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Abstract:The effects of straw removal from irrigated fields cropped to wheat and barley on soil properties and nutrient cycling are a concern because of its potential impact on the sustainability of agricultural fields. The increasing demand of straw for animal bedding and the potential development of cellulosic ethanol production will likely increase the demand in the future. Previous reviews addressing changes in soil properties when crop residues are removed focused primarily on rain-fed systems. This article reviews published research assessing the effects of wheat and barley straw removal on soil organic carbon (SOC) and analyzes changes in nutrient cycling within irrigated wheat and barley production systems. The effects of straw removal on bulk density, saturated hydraulic conductivity, and other properties are reported from selected studies. Six studies compared SOC changes with time in irrigated systems in which wheat straw was removed or retained. These studies indicated that SOC either increased with time or remained constant when residues were removed. It is possible that bclowground biomass was supplying C to soils at a rate sufficient to maintain or, in some cases, slowly increase SOC with time. A separate research review calculated the minimum aboveground annual carbon inputs needed to maintain SOC levels from nine wheat system studies. Calculations of the minimum aboveground annual C source inputs needed to maintain SOC levels were from rain-fed systems and are some of the best information presently available for use in evaluating residue removal effects in irrigated systems. However, long-term studies are needed to obtain reliable data for diverse irrigated systems. Significant amounts of nutrients are removed from the soil/plant system when straw is removed. Producers will need to determine the cost of the nutrient removal from their systems to determine the value of the straw.Key words: Straw, residue, wheat, barley, small grain, soil organic carbon, nutrients, fertilizer (Soil Sci 2009:174: 303-311) R emoval of straw from grain production fields that have historically incorporated the residues with tillage have many interested parties concerned about the effects on soil properties and nutrient cycling. Several changes and potential changes in straw management have led to these concerns, including removal of straw from grain fields for animal bedding and feed, increased costs of fertilizers and fuel, and the potential development of cellulose-based ethanol production. Because of potential increases in biofuel demand, the ethanol industry will likely be a major cause of more residue removal from cropland. The immediate and long-term effects of removing aboveground crop residues from fields on crop productivity and sustainability are a concern. A series of policies have pushed for the increased production of biofuels, including the

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Modeling the incorporation of corn (Zea mays L.) carbon from roots and rhizodeposition into soil organic matter

Cited by 69 publications

References 21 publications

Assessing Carbon and Nitrogen Partition in Kharif Crops for Their Carbon Sequestration Potential

Assessing Carbon and Nitrogen Partition in Kharif Crops for Their Carbon Sequestration Potential

Stable carbon isotope signatures of ancient Maize agriculture at El Kinel, Guatemala

Irrigated Small-Grain Residue Management Effects on Soil Chemical and Physical Properties and Nutrient Cycling

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