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Biblioteca (s) : |
INIA La Estanzuela. |
Fecha : |
15/03/2022 |
Actualizado : |
15/03/2022 |
Tipo de producción científica : |
Artículos en Revistas Indexadas Internacionales |
Autor : |
NÚÑEZ, A.; COTRUFO, M.F.; SCHIPANSKI, M. |
Afiliación : |
AGUSTIN NUÑEZ RUSSI, INIA (Instituto Nacional de Investigación Agropecuaria), Uruguay./ Department of Soil and Crop Sciences, Colorado State University, 307 University Ave., Fort Collins, CO 80523-1170, USA.; M. FRANCESCA COTRUFO, Department of Soil and Crop Sciences, Colorado State University, 307 University Ave., Fort Collins, CO 80523-1170, USA.; MEAGAN SCHIPANSKI, Department of Soil and Crop Sciences, Colorado State University, 307 University Ave., Fort Collins, CO 80523-1170, USA. |
Título : |
Irrigation effects on the formation of soil organic matter from aboveground plant litter inputs in semiarid agricultural systems. |
Fecha de publicación : |
2022 |
Fuente / Imprenta : |
Geoderma, 2022, Volume 416, Article number 115804. doi: https://doi.org/10.1016/j.geoderma.2022.115804 |
DOI : |
10.1016/j.geoderma.2022.115804 |
Idioma : |
Inglés |
Notas : |
Article history: Received 28 October 2021/ Revised 25 February 2022/ Accepted 25 February 2022/ Available online 7 March 2022 /Version of Record 7 March 2022. |
Contenido : |
ABSTRACT: In semiarid agricultural systems, irrigation may increase soil organic matter (SOM) due to higher biomass
production. However, aboveground production tends to increase more than belowground biomass, and in no-till
systems SOM responses to irrigation would strongly depend on the fate of crop residues left on the soil surface.
Litter decomposition and SOM formation can also be affected by irrigation due to changes in water dynamics, but
little is known about the impacts of irrigation on the pathways of SOM formation. We used dual 13C and 15N
labeled maize litter to quantify the effect of irrigation on the contribution of aboveground crop residues to SOM
formation in semiarid, no-till agricultural systems. We incubated the litter in a continuous maize cropping system
with two treatments, dryland and irrigated, and measured litter decomposition and its contribution to different
SOM pools. Irrigation had a larger effect on litter C and N losses than on the formation of new SOM. After 13
months the C and N losses from the litter layer were 24% higher under irrigation, but there were no treatment
differences in the litter-derived C and N recovered in SOM. Most of the litter-derived organic matter (OM) was
found in the mineral associated OM pool (MAOM), but irrigation did not affect the amount of litter-derived OM
found as MAOM or as particulate organic matter. Irrigation increased the amount of litter-derived OM found in
macroaggregates, and this observation was more related to a higher aggregation than to aggregate enrichment in
the irrigated treatment. Our results suggest that a smaller proportion of aboveground crop residues will form
SOM in irrigated systems compared to dryland conditions and may help to partially explain why irrigation has a
stronger relative effect on crop productivity and C inputs than on SOC stocks in semiarid agricultural systems. MenosABSTRACT: In semiarid agricultural systems, irrigation may increase soil organic matter (SOM) due to higher biomass
production. However, aboveground production tends to increase more than belowground biomass, and in no-till
systems SOM responses to irrigation would strongly depend on the fate of crop residues left on the soil surface.
Litter decomposition and SOM formation can also be affected by irrigation due to changes in water dynamics, but
little is known about the impacts of irrigation on the pathways of SOM formation. We used dual 13C and 15N
labeled maize litter to quantify the effect of irrigation on the contribution of aboveground crop residues to SOM
formation in semiarid, no-till agricultural systems. We incubated the litter in a continuous maize cropping system
with two treatments, dryland and irrigated, and measured litter decomposition and its contribution to different
SOM pools. Irrigation had a larger effect on litter C and N losses than on the formation of new SOM. After 13
months the C and N losses from the litter layer were 24% higher under irrigation, but there were no treatment
differences in the litter-derived C and N recovered in SOM. Most of the litter-derived organic matter (OM) was
found in the mineral associated OM pool (MAOM), but irrigation did not affect the amount of litter-derived OM
found as MAOM or as particulate organic matter. Irrigation increased the amount of litter-derived OM found in
macroaggregates, and this observation ... Presentar Todo |
Palabras claves : |
13C; 15N; Aggregates; Litter decomposition; Physical fractionation; Table isotopes. |
Asunto categoría : |
-- |
Marc : |
LEADER 02845naa a2200241 a 4500 001 1062838 005 2022-03-15 008 2022 bl uuuu u00u1 u #d 024 7 $a10.1016/j.geoderma.2022.115804$2DOI 100 1 $aNÚÑEZ, A. 245 $aIrrigation effects on the formation of soil organic matter from aboveground plant litter inputs in semiarid agricultural systems.$h[electronic resource] 260 $c2022 500 $aArticle history: Received 28 October 2021/ Revised 25 February 2022/ Accepted 25 February 2022/ Available online 7 March 2022 /Version of Record 7 March 2022. 520 $aABSTRACT: In semiarid agricultural systems, irrigation may increase soil organic matter (SOM) due to higher biomass production. However, aboveground production tends to increase more than belowground biomass, and in no-till systems SOM responses to irrigation would strongly depend on the fate of crop residues left on the soil surface. Litter decomposition and SOM formation can also be affected by irrigation due to changes in water dynamics, but little is known about the impacts of irrigation on the pathways of SOM formation. We used dual 13C and 15N labeled maize litter to quantify the effect of irrigation on the contribution of aboveground crop residues to SOM formation in semiarid, no-till agricultural systems. We incubated the litter in a continuous maize cropping system with two treatments, dryland and irrigated, and measured litter decomposition and its contribution to different SOM pools. Irrigation had a larger effect on litter C and N losses than on the formation of new SOM. After 13 months the C and N losses from the litter layer were 24% higher under irrigation, but there were no treatment differences in the litter-derived C and N recovered in SOM. Most of the litter-derived organic matter (OM) was found in the mineral associated OM pool (MAOM), but irrigation did not affect the amount of litter-derived OM found as MAOM or as particulate organic matter. Irrigation increased the amount of litter-derived OM found in macroaggregates, and this observation was more related to a higher aggregation than to aggregate enrichment in the irrigated treatment. Our results suggest that a smaller proportion of aboveground crop residues will form SOM in irrigated systems compared to dryland conditions and may help to partially explain why irrigation has a stronger relative effect on crop productivity and C inputs than on SOC stocks in semiarid agricultural systems. 653 $a13C 653 $a15N 653 $aAggregates 653 $aLitter decomposition 653 $aPhysical fractionation 653 $aTable isotopes 700 1 $aCOTRUFO, M.F. 700 1 $aSCHIPANSKI, M. 773 $tGeoderma, 2022, Volume 416, Article number 115804. doi: https://doi.org/10.1016/j.geoderma.2022.115804
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INIA La Estanzuela (LE) |
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Registro completo
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Biblioteca (s) : |
INIA Tacuarembó. |
Fecha actual : |
21/02/2014 |
Actualizado : |
23/09/2019 |
Tipo de producción científica : |
Artículos en Revistas Indexadas Internacionales |
Circulación / Nivel : |
Internacional - -- |
Autor : |
TORRES, D.; NUNES, A.C.P.; AGUIAR, A.; NIKICHUK, N.; CENTURIÓN, C.; CABRERA, M.; MORAES, M.L.T.; RESENDE, M.D.V.; SEBBENN, A.M. |
Afiliación : |
DIEGO GABRIEL TORRES DINI, INIA (Instituto Nacional de Investigación Agropecuaria), Uruguay; NATALIA ISABEL NIKICHUK BELL, INIA (Instituto Nacional de Investigación Agropecuaria), Uruguay. |
Título : |
Clonal selection of Eucalyptus grandis x Eucalyptus globulusfor productivity, adaptability, and stability, using SNP markers. |
Fecha de publicación : |
2016 |
Fuente / Imprenta : |
Silvae Genetica, 2016, v. 65, no. 2, p. 30-38. |
DOI : |
10.1515/sg-2016-0014 |
Idioma : |
Inglés |
Notas : |
Article history: Online erschienen: 27.10.2017; Erschienen im Druck: 01.12.2016. |
Contenido : |
In Uruguay, reforestations with Eucalyptus sp. is of fundamental importance to supply paper, pulp, and wood production. This study investigates genetic, productivity, stability, and adaptability parameters in the selection of Eucalypts grandis x Eucalyptus globulus full-sib hybrid clones. The study was conducted in a clonal test, repeated in two different soils types, in Rio Negro State, Uruguay. The population was characterized phenotypically for diameter at breast height (dbh) and genotyped
for SNP markers (EuCHIP60K chip). Mean dbh was similar between sites and the genotype?environment interaction was simple. We found high genotype correlation in clone performance between environments (0.708), indicating the possibility of selecting the same clones for both study locations. Mean heritability between clones (0.724), coefficient of individual genetic variation (10.9 %), and relative variation (0.916), suggest the possibility of gains (estimated at 3.1 % for both sites together) by selecting clones with higher growth rates. A total of 15,196 SNPs were used to confirm parentage and test a genomic selection model for dbh. The predictive capacity was negative (-0.15) given the small population size (78 individuals). The most adaptable material among the tested study sites presented higher values for SNP heterozygosity. Thus, using molecular markers to identify clones responsive to environmental changes can act as a powerful tool in Eucalyptus breeding programs. The hybrid population showed greater adaptability than E. globulus for this region. MenosIn Uruguay, reforestations with Eucalyptus sp. is of fundamental importance to supply paper, pulp, and wood production. This study investigates genetic, productivity, stability, and adaptability parameters in the selection of Eucalypts grandis x Eucalyptus globulus full-sib hybrid clones. The study was conducted in a clonal test, repeated in two different soils types, in Rio Negro State, Uruguay. The population was characterized phenotypically for diameter at breast height (dbh) and genotyped
for SNP markers (EuCHIP60K chip). Mean dbh was similar between sites and the genotype?environment interaction was simple. We found high genotype correlation in clone performance between environments (0.708), indicating the possibility of selecting the same clones for both study locations. Mean heritability between clones (0.724), coefficient of individual genetic variation (10.9 %), and relative variation (0.916), suggest the possibility of gains (estimated at 3.1 % for both sites together) by selecting clones with higher growth rates. A total of 15,196 SNPs were used to confirm parentage and test a genomic selection model for dbh. The predictive capacity was negative (-0.15) given the small population size (78 individuals). The most adaptable material among the tested study sites presented higher values for SNP heterozygosity. Thus, using molecular markers to identify clones responsive to environmental changes can act as a powerful tool in Eucalyptus breeding programs. The hybrid popul... Presentar Todo |
Palabras claves : |
EUCALYPTUS HYBRID; FOREST AND FORESTRY; FOREST BREEDING; FORESTACIÓN; GENE MARKERS; POPULATION GENETICS; QUANTITATIVE GENETICS. |
Thesagro : |
URUGUAY. |
Asunto categoría : |
K10 Producción forestal |
URL : |
http://www.ainfo.inia.uy/digital/bitstream/item/7652/1/Silvae-Genetica.pdf
https://www.degruyter.com/downloadpdf/j/sg.2016.65.issue-2/sg-2016-0014/sg-2016-0014.pdf
|
Marc : |
LEADER 02616naa a2200337 a 4500 001 1020438 005 2019-09-23 008 2016 bl uuuu u00u1 u #d 024 7 $a10.1515/sg-2016-0014$2DOI 100 1 $aTORRES, D. 245 $aClonal selection of Eucalyptus grandis x Eucalyptus globulusfor productivity, adaptability, and stability, using SNP markers.$h[electronic resource] 260 $c2016 500 $aArticle history: Online erschienen: 27.10.2017; Erschienen im Druck: 01.12.2016. 520 $aIn Uruguay, reforestations with Eucalyptus sp. is of fundamental importance to supply paper, pulp, and wood production. This study investigates genetic, productivity, stability, and adaptability parameters in the selection of Eucalypts grandis x Eucalyptus globulus full-sib hybrid clones. The study was conducted in a clonal test, repeated in two different soils types, in Rio Negro State, Uruguay. The population was characterized phenotypically for diameter at breast height (dbh) and genotyped for SNP markers (EuCHIP60K chip). Mean dbh was similar between sites and the genotype?environment interaction was simple. We found high genotype correlation in clone performance between environments (0.708), indicating the possibility of selecting the same clones for both study locations. Mean heritability between clones (0.724), coefficient of individual genetic variation (10.9 %), and relative variation (0.916), suggest the possibility of gains (estimated at 3.1 % for both sites together) by selecting clones with higher growth rates. A total of 15,196 SNPs were used to confirm parentage and test a genomic selection model for dbh. The predictive capacity was negative (-0.15) given the small population size (78 individuals). The most adaptable material among the tested study sites presented higher values for SNP heterozygosity. Thus, using molecular markers to identify clones responsive to environmental changes can act as a powerful tool in Eucalyptus breeding programs. The hybrid population showed greater adaptability than E. globulus for this region. 650 $aURUGUAY 653 $aEUCALYPTUS HYBRID 653 $aFOREST AND FORESTRY 653 $aFOREST BREEDING 653 $aFORESTACIÓN 653 $aGENE MARKERS 653 $aPOPULATION GENETICS 653 $aQUANTITATIVE GENETICS 700 1 $aNUNES, A.C.P. 700 1 $aAGUIAR, A. 700 1 $aNIKICHUK, N. 700 1 $aCENTURIÓN, C. 700 1 $aCABRERA, M. 700 1 $aMORAES, M.L.T. 700 1 $aRESENDE, M.D.V. 700 1 $aSEBBENN, A.M. 773 $tSilvae Genetica, 2016$gv. 65, no. 2, p. 30-38.
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