Runoff sediment and P losses from various soil management practices: modelling in hilly slopes

Abstract This study aimed to evaluate the effect of soil management on water, sediment and P losses in slope plots in east-central Illinois, USA. Field and laboratory experiments were conducted. The soil management studied were: tillage in contour (CT), tillage in downhill (DT), no-tillage (NT) and...

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Autores principales:	Rocha Junior,Paulo Roberto da, Bhattarai,Rabin, Alves Fernandes,Raphael Bragança, Kalita,Prasanta Kumar, Andrade,Felipe Vaz
Lenguaje:	English
Publicado:	Chilean Society of Soil Science / Sociedad Chilena de la Ciencia del Suelo 2018
Materias:	Conservational practices No tillage Erosion modelling Soil erosion WEPP model
Acceso en línea:	http://www.scielo.cl/scielo.php?script=sci_arttext&pid=S0718-95162018000100113
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spelling	oai:scielo:S0718-951620180001001132018-11-21Runoff sediment and P losses from various soil management practices: modelling in hilly slopesRocha Junior,Paulo Roberto daBhattarai,RabinAlves Fernandes,Raphael BragançaKalita,Prasanta KumarAndrade,Felipe Vaz Conservational practices No tillage Erosion modelling Soil erosion WEPP model Abstract This study aimed to evaluate the effect of soil management on water, sediment and P losses in slope plots in east-central Illinois, USA. Field and laboratory experiments were conducted. The soil management studied were: tillage in contour (CT), tillage in downhill (DT), no-tillage (NT) and bare soil (BS). After collecting the field data, WEPP model was used to model the erosion process. The NT and BS management resulted in low (152.35 mm field; 28.51 mm laboratory) and high (315.25 mm field; 63.67 mm laboratory) water loss respectively. For soil losses, similar behavior was observed for NT (0.45 t ha-1 field; 0 t ha-1 laboratory) and BS (87.27 t ha-1 field; 0.86 t ha-1 laboratory) managements. In case of P losses, CT management resulted in the lowest loss (216.26 g ha-1) while high values were found in the BS management (1806.06 g ha-1). The modeled results obtained from WEPP model did not show a good agreement with the data collected at field overestimated and underestimated the soil and water losses. The enrichment rate of runoff with sediment was influenced by soil management practices and the DT (34.48 g L-1 min-1) management showed the high peak. The adoption of NT management in agriculture areas with high slope (32%) can be beneficial to reduce erosion process. The total removal of vegetation cover leaving the soil exposed, similar to the BS management and soil preparation along the slope (DT management) should be avoided.info:eu-repo/semantics/openAccessChilean Society of Soil Science / Sociedad Chilena de la Ciencia del SueloJournal of soil science and plant nutrition v.18 n.1 20182018-03-01text/htmlhttp://www.scielo.cl/scielo.php?script=sci_arttext&pid=S0718-95162018000100113en10.4067/S0718-95162018005000502
institution	Scielo Chile
collection	Scielo Chile
language	English
topic	Conservational practices No tillage Erosion modelling Soil erosion WEPP model
spellingShingle	Conservational practices No tillage Erosion modelling Soil erosion WEPP model Rocha Junior,Paulo Roberto da Bhattarai,Rabin Alves Fernandes,Raphael Bragança Kalita,Prasanta Kumar Andrade,Felipe Vaz Runoff sediment and P losses from various soil management practices: modelling in hilly slopes
description	Abstract This study aimed to evaluate the effect of soil management on water, sediment and P losses in slope plots in east-central Illinois, USA. Field and laboratory experiments were conducted. The soil management studied were: tillage in contour (CT), tillage in downhill (DT), no-tillage (NT) and bare soil (BS). After collecting the field data, WEPP model was used to model the erosion process. The NT and BS management resulted in low (152.35 mm field; 28.51 mm laboratory) and high (315.25 mm field; 63.67 mm laboratory) water loss respectively. For soil losses, similar behavior was observed for NT (0.45 t ha-1 field; 0 t ha-1 laboratory) and BS (87.27 t ha-1 field; 0.86 t ha-1 laboratory) managements. In case of P losses, CT management resulted in the lowest loss (216.26 g ha-1) while high values were found in the BS management (1806.06 g ha-1). The modeled results obtained from WEPP model did not show a good agreement with the data collected at field overestimated and underestimated the soil and water losses. The enrichment rate of runoff with sediment was influenced by soil management practices and the DT (34.48 g L-1 min-1) management showed the high peak. The adoption of NT management in agriculture areas with high slope (32%) can be beneficial to reduce erosion process. The total removal of vegetation cover leaving the soil exposed, similar to the BS management and soil preparation along the slope (DT management) should be avoided.
author	Rocha Junior,Paulo Roberto da Bhattarai,Rabin Alves Fernandes,Raphael Bragança Kalita,Prasanta Kumar Andrade,Felipe Vaz
author_facet	Rocha Junior,Paulo Roberto da Bhattarai,Rabin Alves Fernandes,Raphael Bragança Kalita,Prasanta Kumar Andrade,Felipe Vaz
author_sort	Rocha Junior,Paulo Roberto da
title	Runoff sediment and P losses from various soil management practices: modelling in hilly slopes
title_short	Runoff sediment and P losses from various soil management practices: modelling in hilly slopes
title_full	Runoff sediment and P losses from various soil management practices: modelling in hilly slopes
title_fullStr	Runoff sediment and P losses from various soil management practices: modelling in hilly slopes
title_full_unstemmed	Runoff sediment and P losses from various soil management practices: modelling in hilly slopes
title_sort	runoff sediment and p losses from various soil management practices: modelling in hilly slopes
publisher	Chilean Society of Soil Science / Sociedad Chilena de la Ciencia del Suelo
publishDate	2018
url	http://www.scielo.cl/scielo.php?script=sci_arttext&pid=S0718-95162018000100113
work_keys_str_mv	AT rochajuniorpaulorobertoda runoffsedimentandplossesfromvarioussoilmanagementpracticesmodellinginhillyslopes AT bhattarairabin runoffsedimentandplossesfromvarioussoilmanagementpracticesmodellinginhillyslopes AT alvesfernandesraphaelbraganca runoffsedimentandplossesfromvarioussoilmanagementpracticesmodellinginhillyslopes AT kalitaprasantakumar runoffsedimentandplossesfromvarioussoilmanagementpracticesmodellinginhillyslopes AT andradefelipevaz runoffsedimentandplossesfromvarioussoilmanagementpracticesmodellinginhillyslopes
_version_	1714206570876764160

Runoff sediment and P losses from various soil management practices: modelling in hilly slopes

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