EFFECT OF THE STOCKING RATE AND LAND SLOPE ON NITROGEN LOSSES TO WATER ON A GRAZED PASTURE OF SOUTHERN CHILE
Most of the studies on nitrogen (N) leaching have been carried out on cut grass, and there is a lack of information on beef grazed grasslands. The objective of this study was to quantify N runoff and leaching losses in beef production systems with two different immediate stocking rates (63 and 191 H...
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Chilean Society of Soil Science / Sociedad Chilena de la Ciencia del Suelo
2011
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oai:scielo:S0718-951620110002000092011-07-21EFFECT OF THE STOCKING RATE AND LAND SLOPE ON NITROGEN LOSSES TO WATER ON A GRAZED PASTURE OF SOUTHERN CHILESalazar,FAlfaro,MLedgard,SIraira,STeuber,NRamírez,L grazing beef production nitrogen leaching runoff volcanic soils Most of the studies on nitrogen (N) leaching have been carried out on cut grass, and there is a lack of information on beef grazed grasslands. The objective of this study was to quantify N runoff and leaching losses in beef production systems with two different immediate stocking rates (63 and 191 Holstein Friesian steers ha-1 day-1) and two land slopes (4 and 12%). Runoff and leachate samples were analyzed from 2004 to 2006 for total N, nitrate and ammonium. No significant differences for the total N losses were found between treatments (p > 0.05), which were low ranging from 0.9 to 26.8 kg N ha-1 yr-1. The main pathway for the losses was leaching, which contributed >99% of the total N lost. The main form of N leaching was nitrate-N (>84%). Nitrate-N concentration in runoff samples was high, averaging 14 to 31 mg L-1. We suggest that these low N losses could be related the low N fertiliser inputs in the pasture and to the N adsorption properties of volcanic soils and, so that further research is required on this subject.info:eu-repo/semantics/openAccessChilean Society of Soil Science / Sociedad Chilena de la Ciencia del SueloJournal of soil science and plant nutrition v.11 n.2 20112011-01-01text/htmlhttp://www.scielo.cl/scielo.php?script=sci_arttext&pid=S0718-95162011000200009en10.4067/S0718-95162011000200009 |
| institution |
Scielo Chile |
| collection |
Scielo Chile |
| language |
English |
| topic |
grazing beef production nitrogen leaching runoff volcanic soils |
| spellingShingle |
grazing beef production nitrogen leaching runoff volcanic soils Salazar,F Alfaro,M Ledgard,S Iraira,S Teuber,N Ramírez,L EFFECT OF THE STOCKING RATE AND LAND SLOPE ON NITROGEN LOSSES TO WATER ON A GRAZED PASTURE OF SOUTHERN CHILE |
| description |
Most of the studies on nitrogen (N) leaching have been carried out on cut grass, and there is a lack of information on beef grazed grasslands. The objective of this study was to quantify N runoff and leaching losses in beef production systems with two different immediate stocking rates (63 and 191 Holstein Friesian steers ha-1 day-1) and two land slopes (4 and 12%). Runoff and leachate samples were analyzed from 2004 to 2006 for total N, nitrate and ammonium. No significant differences for the total N losses were found between treatments (p > 0.05), which were low ranging from 0.9 to 26.8 kg N ha-1 yr-1. The main pathway for the losses was leaching, which contributed >99% of the total N lost. The main form of N leaching was nitrate-N (>84%). Nitrate-N concentration in runoff samples was high, averaging 14 to 31 mg L-1. We suggest that these low N losses could be related the low N fertiliser inputs in the pasture and to the N adsorption properties of volcanic soils and, so that further research is required on this subject. |
| author |
Salazar,F Alfaro,M Ledgard,S Iraira,S Teuber,N Ramírez,L |
| author_facet |
Salazar,F Alfaro,M Ledgard,S Iraira,S Teuber,N Ramírez,L |
| author_sort |
Salazar,F |
| title |
EFFECT OF THE STOCKING RATE AND LAND SLOPE ON NITROGEN LOSSES TO WATER ON A GRAZED PASTURE OF SOUTHERN CHILE |
| title_short |
EFFECT OF THE STOCKING RATE AND LAND SLOPE ON NITROGEN LOSSES TO WATER ON A GRAZED PASTURE OF SOUTHERN CHILE |
| title_full |
EFFECT OF THE STOCKING RATE AND LAND SLOPE ON NITROGEN LOSSES TO WATER ON A GRAZED PASTURE OF SOUTHERN CHILE |
| title_fullStr |
EFFECT OF THE STOCKING RATE AND LAND SLOPE ON NITROGEN LOSSES TO WATER ON A GRAZED PASTURE OF SOUTHERN CHILE |
| title_full_unstemmed |
EFFECT OF THE STOCKING RATE AND LAND SLOPE ON NITROGEN LOSSES TO WATER ON A GRAZED PASTURE OF SOUTHERN CHILE |
| title_sort |
effect of the stocking rate and land slope on nitrogen losses to water on a grazed pasture of southern chile |
| publisher |
Chilean Society of Soil Science / Sociedad Chilena de la Ciencia del Suelo |
| publishDate |
2011 |
| url |
http://www.scielo.cl/scielo.php?script=sci_arttext&pid=S0718-95162011000200009 |
| work_keys_str_mv |
AT salazarf effectofthestockingrateandlandslopeonnitrogenlossestowateronagrazedpastureofsouthernchile AT alfarom effectofthestockingrateandlandslopeonnitrogenlossestowateronagrazedpastureofsouthernchile AT ledgards effectofthestockingrateandlandslopeonnitrogenlossestowateronagrazedpastureofsouthernchile AT irairas effectofthestockingrateandlandslopeonnitrogenlossestowateronagrazedpastureofsouthernchile AT teubern effectofthestockingrateandlandslopeonnitrogenlossestowateronagrazedpastureofsouthernchile AT ramirezl effectofthestockingrateandlandslopeonnitrogenlossestowateronagrazedpastureofsouthernchile |
| _version_ |
1714206420258258944 |