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Evaluating nitrate leaching potentia...

Saso, Joseph Kiyoshi.

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Evaluating nitrate leaching potential for two different hydrological soil groups using a conservative tracer.

紀錄類型:	書目-語言資料,印刷品 : Monograph/item
正題名/作者:	Evaluating nitrate leaching potential for two different hydrological soil groups using a conservative tracer./
作者:	Saso, Joseph Kiyoshi.
面頁冊數:	85 p.
附註:	Source: Masters Abstracts International, Volume: 48-04, page: 2079.
Contained By:	Masters Abstracts International48-04.
標題:	Agriculture, Agronomy. -
電子資源:	http://pqdd.sinica.edu.tw/twdaoapp/servlet/advanced?query=MR56980
ISBN:	9780494569801

Evaluating nitrate leaching potential for two different hydrological soil groups using a conservative tracer.
Saso, Joseph Kiyoshi.

Evaluating nitrate leaching potential for two different hydrological soil groups using a conservative tracer. - 85 p.

Source: Masters Abstracts International, Volume: 48-04, page: 2079.

Thesis (M.Sc.)--University of Guelph (Canada), 2009.

This research examined field measurements and the HYDRUS 1-D (version 4.12) model to quantify annual movement of NO3-N through two soils of different HSG groups (B and C) using a Cl tracer and examine leaching losses attributed to the winter months (November 2007 - April 2008). Field and model data confirmed potential leaching losses &sim; 72% (Cl mass recovery) over these months. Differences in Cl and nitrate-N mass recovery indicated potential N losses via other processes such as denitrification and/or immobilization. The 200 kg N ha-1 treatment was most indicative; site's Band C had 1% and 9% losses, respectively. Both sites exhibited &sim; 96-99% loss of soil nitrate-N and Cl of the fall-applied N and Cl by September 2008. Monthly crop sampling demonstrated &sim; 1% soil mineral-N remained at harvest (November 2008). These findings further support the effectiveness of applying N in the spring than the fall.

ISBN: 9780494569801Subjects--Topical Terms:

1018679
Agriculture, Agronomy.

Evaluating nitrate leaching potential for two different hydrological soil groups using a conservative tracer.
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502 $a Thesis (M.Sc.)--University of Guelph (Canada), 2009.
520 $a This research examined field measurements and the HYDRUS 1-D (version 4.12) model to quantify annual movement of NO3-N through two soils of different HSG groups (B and C) using a Cl tracer and examine leaching losses attributed to the winter months (November 2007 - April 2008). Field and model data confirmed potential leaching losses &sim; 72% (Cl mass recovery) over these months. Differences in Cl and nitrate-N mass recovery indicated potential N losses via other processes such as denitrification and/or immobilization. The 200 kg N ha-1 treatment was most indicative; site's Band C had 1% and 9% losses, respectively. Both sites exhibited &sim; 96-99% loss of soil nitrate-N and Cl of the fall-applied N and Cl by September 2008. Monthly crop sampling demonstrated &sim; 1% soil mineral-N remained at harvest (November 2008). These findings further support the effectiveness of applying N in the spring than the fall.
590 $a School code: 0081.
650 4 $a Agriculture, Agronomy. $3 1018679
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