NUTRIENTS BALANCES IN BEEF CATTLE PRODUCTION SYSTEMS AND THEIR IMPLICATIONS FOR THE ENVIRONMENT

The main inputs and outputs of nitrogen (N) and phosphorus (P) in soils and swards under typical Southern Chilean conditions were determined between 2004-2005 and 2006-2007 to establish soil and field gate N and P balances under different immediate stocking rates (63 and 191 anim ha-1 d-1) and field...

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Autores principales:	Alfaro,M, Salazar,F. S, Oenema,O, Iraira,S, Teuber,N, Ramirez,L, Villarroel,D
Lenguaje:	English
Publicado:	Sociedad Chilena de la Ciencia del Suelo 2009
Materias:	stocking rate field slope grazing nutrient budget
Acceso en línea:	http://www.scielo.cl/scielo.php?script=sci_arttext&pid=S0718-27912009000100004
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spelling	oai:scielo:S0718-279120090001000042009-06-26NUTRIENTS BALANCES IN BEEF CATTLE PRODUCTION SYSTEMS AND THEIR IMPLICATIONS FOR THE ENVIRONMENTAlfaro,MSalazar,F. SOenema,OIraira,STeuber,NRamirez,LVillarroel,D stocking rate field slope grazing nutrient budget The main inputs and outputs of nitrogen (N) and phosphorus (P) in soils and swards under typical Southern Chilean conditions were determined between 2004-2005 and 2006-2007 to establish soil and field gate N and P balances under different immediate stocking rates (63 and 191 anim ha-1 d-1) and field slope treatments (4 and 12%). Treatments received 67.5 and 40 kg N and P ha-1 yr-1 as inorganic fertilizer. The main N and P input to the soil balances was N mineralization (304 kg ha-1 yr-1) and inorganic fertilizer (62 and 69% for N and P, respectively). The main output for all treatments was plant uptake (95% and 100% on average for N and P, respectively). The N and P apparent use efficiency was high (>95%). The main N and P input to field gate balances was inorganic fertiliser (>95%>), while animal production had a minor effect on N and P export. The soil balances ranged from -303 up to +58 and from -3 up to +20 kg of N and P ha-1 yr-1. Field N and P gate budgets ranged between -309 up to +58 and from -8 up to +20 kg of N and P ha-1 yr-1, respectively, indicating a potential soil degradation in areas with low nutrient inputs in inorganic fertiliser and an overaccumulation in areas with low dry matter production of the grassland, which in turn can lead to environmental constrains. This should be especially considered for dairy systems, which are more intensively managed.info:eu-repo/semantics/openAccessSociedad Chilena de la Ciencia del SueloRevista de la ciencia del suelo y nutrición vegetal v.9 n.1 20092009-01-01text/htmlhttp://www.scielo.cl/scielo.php?script=sci_arttext&pid=S0718-27912009000100004en10.4067/S0718-27912009000100004
institution	Scielo Chile
collection	Scielo Chile
language	English
topic	stocking rate field slope grazing nutrient budget
spellingShingle	stocking rate field slope grazing nutrient budget Alfaro,M Salazar,F. S Oenema,O Iraira,S Teuber,N Ramirez,L Villarroel,D NUTRIENTS BALANCES IN BEEF CATTLE PRODUCTION SYSTEMS AND THEIR IMPLICATIONS FOR THE ENVIRONMENT
description	The main inputs and outputs of nitrogen (N) and phosphorus (P) in soils and swards under typical Southern Chilean conditions were determined between 2004-2005 and 2006-2007 to establish soil and field gate N and P balances under different immediate stocking rates (63 and 191 anim ha-1 d-1) and field slope treatments (4 and 12%). Treatments received 67.5 and 40 kg N and P ha-1 yr-1 as inorganic fertilizer. The main N and P input to the soil balances was N mineralization (304 kg ha-1 yr-1) and inorganic fertilizer (62 and 69% for N and P, respectively). The main output for all treatments was plant uptake (95% and 100% on average for N and P, respectively). The N and P apparent use efficiency was high (>95%). The main N and P input to field gate balances was inorganic fertiliser (>95%>), while animal production had a minor effect on N and P export. The soil balances ranged from -303 up to +58 and from -3 up to +20 kg of N and P ha-1 yr-1. Field N and P gate budgets ranged between -309 up to +58 and from -8 up to +20 kg of N and P ha-1 yr-1, respectively, indicating a potential soil degradation in areas with low nutrient inputs in inorganic fertiliser and an overaccumulation in areas with low dry matter production of the grassland, which in turn can lead to environmental constrains. This should be especially considered for dairy systems, which are more intensively managed.
author	Alfaro,M Salazar,F. S Oenema,O Iraira,S Teuber,N Ramirez,L Villarroel,D
author_facet	Alfaro,M Salazar,F. S Oenema,O Iraira,S Teuber,N Ramirez,L Villarroel,D
author_sort	Alfaro,M
title	NUTRIENTS BALANCES IN BEEF CATTLE PRODUCTION SYSTEMS AND THEIR IMPLICATIONS FOR THE ENVIRONMENT
title_short	NUTRIENTS BALANCES IN BEEF CATTLE PRODUCTION SYSTEMS AND THEIR IMPLICATIONS FOR THE ENVIRONMENT
title_full	NUTRIENTS BALANCES IN BEEF CATTLE PRODUCTION SYSTEMS AND THEIR IMPLICATIONS FOR THE ENVIRONMENT
title_fullStr	NUTRIENTS BALANCES IN BEEF CATTLE PRODUCTION SYSTEMS AND THEIR IMPLICATIONS FOR THE ENVIRONMENT
title_full_unstemmed	NUTRIENTS BALANCES IN BEEF CATTLE PRODUCTION SYSTEMS AND THEIR IMPLICATIONS FOR THE ENVIRONMENT
title_sort	nutrients balances in beef cattle production systems and their implications for the environment
publisher	Sociedad Chilena de la Ciencia del Suelo
publishDate	2009
url	http://www.scielo.cl/scielo.php?script=sci_arttext&pid=S0718-27912009000100004
work_keys_str_mv	AT alfarom nutrientsbalancesinbeefcattleproductionsystemsandtheirimplicationsfortheenvironment AT salazarfs nutrientsbalancesinbeefcattleproductionsystemsandtheirimplicationsfortheenvironment AT oenemao nutrientsbalancesinbeefcattleproductionsystemsandtheirimplicationsfortheenvironment AT irairas nutrientsbalancesinbeefcattleproductionsystemsandtheirimplicationsfortheenvironment AT teubern nutrientsbalancesinbeefcattleproductionsystemsandtheirimplicationsfortheenvironment AT ramirezl nutrientsbalancesinbeefcattleproductionsystemsandtheirimplicationsfortheenvironment AT villarroeld nutrientsbalancesinbeefcattleproductionsystemsandtheirimplicationsfortheenvironment
_version_	1714203320866832384

NUTRIENTS BALANCES IN BEEF CATTLE PRODUCTION SYSTEMS AND THEIR IMPLICATIONS FOR THE ENVIRONMENT

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