Cover crop effects on soybean residue decomposition and P release in no-tillage systems of Argentina

Cover crops (CC) provide many benefits to soils but their effect on decomposition of previous crop residues and release of nutrients in continuous no-tillage soybean [Glycine max (L.) Merr.] production are little known. Our objective was to quantify CC effects on decomposition and phosphorus (P) rel...

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Autores principales: Varela, M.F., Scianca, C.M., Taboada, M.A., Rubio, G.
Formato: JOUR
Materias:
Nutrient cycling
Phosphorus
Soil organic carbon
Soybean residues
Agricultural wastes
Amino acids
Biomass
Crops
Moisture determination
Nitrogen fixation
Nutrients
Plants (botany)
Microbial activities
No-tillage systems
Phosphorus release
Residue decomposition
Soybean [glycine max (l.) merr.]
Soils
cover crop
crop production
decomposition
soybean
zero tillage
Argentina
Acceso en línea:http://hdl.handle.net/20.500.12110/paper_01671987_v143_n_p59_Varela
Aporte de:
Biblioteca Digital - Facultad de Ciencias Exactas y Naturales (UBA) de Universidad de Buenos Aires
id todo:paper_01671987_v143_n_p59_Varela
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spelling todo:paper_01671987_v143_n_p59_Varela2023-10-03T15:04:31Z Cover crop effects on soybean residue decomposition and P release in no-tillage systems of Argentina Varela, M.F. Scianca, C.M. Taboada, M.A. Rubio, G. Nutrient cycling Phosphorus Soil organic carbon Soybean residues Agricultural wastes Amino acids Biomass Crops Moisture determination Nitrogen fixation Nutrients Phosphorus Plants (botany) Microbial activities No-tillage systems Nutrient cycling Phosphorus release Residue decomposition Soil organic carbon Soybean residues Soybean [glycine max (l.) merr.] Soils cover crop crop production decomposition soybean zero tillage Argentina Cover crops (CC) provide many benefits to soils but their effect on decomposition of previous crop residues and release of nutrients in continuous no-tillage soybean [Glycine max (L.) Merr.] production are little known. Our objective was to quantify CC effects on decomposition and phosphorus (P) release from soybean residue using litterbags. Three CC species (oat, Avena sativa L.; rye, Secale cereal L.; and rye grass, Lolium multiflorum L.) and a no CC control were evaluated. Temperature, moisture content, microbial biomass and microbial activity were measured in the surface 2cm of soil and residues. Cover crops increased soybean residue decomposition slightly both years (8.2 and 6.4%). Phosphorus release from soybean residue did not show any significant differences. Cover crops increased microbial biomass quantity and activity in both soil and residue samples (p<0.001, p=0.049 for soil and residue microbial biomass; p=0.060, p=0.003 for soil and residue microbial activity, respectively). Increased residue decomposition with CC was associated with higher soil and residue microbial biomass and activity, higher near-surface (0-2cm) moisture content (due to shading) and soil organic carbon enrichment by CC. Even though CC increased soybean residue decomposition (233kgha-1), this effect was compensated for by the annual addition of approximately 6500kgha-1 of CC biomass. This study demonstrated another role for CC when calibrating models that simulate the decomposition of residues in no-tillage systems. © 2014 Published by Elsevier B.V. JOUR info:eu-repo/semantics/openAccess http://creativecommons.org/licenses/by/2.5/ar http://hdl.handle.net/20.500.12110/paper_01671987_v143_n_p59_Varela
institution Universidad de Buenos Aires
institution_str I-28
repository_str R-134
collection Biblioteca Digital - Facultad de Ciencias Exactas y Naturales (UBA)
topic Nutrient cycling
Phosphorus
Soil organic carbon
Soybean residues
Agricultural wastes
Amino acids
Biomass
Crops
Moisture determination
Nitrogen fixation
Nutrients
Phosphorus
Plants (botany)
Microbial activities
No-tillage systems
Nutrient cycling
Phosphorus release
Residue decomposition
Soil organic carbon
Soybean residues
Soybean [glycine max (l.) merr.]
Soils
cover crop
crop production
decomposition
soybean
zero tillage
Argentina
spellingShingle Nutrient cycling
Phosphorus
Soil organic carbon
Soybean residues
Agricultural wastes
Amino acids
Biomass
Crops
Moisture determination
Nitrogen fixation
Nutrients
Phosphorus
Plants (botany)
Microbial activities
No-tillage systems
Nutrient cycling
Phosphorus release
Residue decomposition
Soil organic carbon
Soybean residues
Soybean [glycine max (l.) merr.]
Soils
cover crop
crop production
decomposition
soybean
zero tillage
Argentina
Varela, M.F.
Scianca, C.M.
Taboada, M.A.
Rubio, G.
Cover crop effects on soybean residue decomposition and P release in no-tillage systems of Argentina
topic_facet Nutrient cycling
Phosphorus
Soil organic carbon
Soybean residues
Agricultural wastes
Amino acids
Biomass
Crops
Moisture determination
Nitrogen fixation
Nutrients
Phosphorus
Plants (botany)
Microbial activities
No-tillage systems
Nutrient cycling
Phosphorus release
Residue decomposition
Soil organic carbon
Soybean residues
Soybean [glycine max (l.) merr.]
Soils
cover crop
crop production
decomposition
soybean
zero tillage
Argentina
description Cover crops (CC) provide many benefits to soils but their effect on decomposition of previous crop residues and release of nutrients in continuous no-tillage soybean [Glycine max (L.) Merr.] production are little known. Our objective was to quantify CC effects on decomposition and phosphorus (P) release from soybean residue using litterbags. Three CC species (oat, Avena sativa L.; rye, Secale cereal L.; and rye grass, Lolium multiflorum L.) and a no CC control were evaluated. Temperature, moisture content, microbial biomass and microbial activity were measured in the surface 2cm of soil and residues. Cover crops increased soybean residue decomposition slightly both years (8.2 and 6.4%). Phosphorus release from soybean residue did not show any significant differences. Cover crops increased microbial biomass quantity and activity in both soil and residue samples (p<0.001, p=0.049 for soil and residue microbial biomass; p=0.060, p=0.003 for soil and residue microbial activity, respectively). Increased residue decomposition with CC was associated with higher soil and residue microbial biomass and activity, higher near-surface (0-2cm) moisture content (due to shading) and soil organic carbon enrichment by CC. Even though CC increased soybean residue decomposition (233kgha-1), this effect was compensated for by the annual addition of approximately 6500kgha-1 of CC biomass. This study demonstrated another role for CC when calibrating models that simulate the decomposition of residues in no-tillage systems. © 2014 Published by Elsevier B.V.
format JOUR
author Varela, M.F.
Scianca, C.M.
Taboada, M.A.
Rubio, G.
author_facet Varela, M.F.
Scianca, C.M.
Taboada, M.A.
Rubio, G.
author_sort Varela, M.F.
title Cover crop effects on soybean residue decomposition and P release in no-tillage systems of Argentina
title_short Cover crop effects on soybean residue decomposition and P release in no-tillage systems of Argentina
title_full Cover crop effects on soybean residue decomposition and P release in no-tillage systems of Argentina
title_fullStr Cover crop effects on soybean residue decomposition and P release in no-tillage systems of Argentina
title_full_unstemmed Cover crop effects on soybean residue decomposition and P release in no-tillage systems of Argentina
title_sort cover crop effects on soybean residue decomposition and p release in no-tillage systems of argentina
url http://hdl.handle.net/20.500.12110/paper_01671987_v143_n_p59_Varela
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AT sciancacm covercropeffectsonsoybeanresiduedecompositionandpreleaseinnotillagesystemsofargentina
AT taboadama covercropeffectsonsoybeanresiduedecompositionandpreleaseinnotillagesystemsofargentina
AT rubiog covercropeffectsonsoybeanresiduedecompositionandpreleaseinnotillagesystemsofargentina
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