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Utilization of gypsum as a filter ma...

Grubb, Karen Lyn.

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Utilization of gypsum as a filter material in agricultural drainage ditches: Impacts of land application on soil fertililty conditions.

紀錄類型:	書目-語言資料,印刷品 : Monograph/item
正題名/作者:	Utilization of gypsum as a filter material in agricultural drainage ditches: Impacts of land application on soil fertililty conditions./
作者:	Grubb, Karen Lyn.
面頁冊數:	82 p.
附註:	Source: Masters Abstracts International, Volume: 49-02, page: 1070.
Contained By:	Masters Abstracts International49-02.
標題:	Agriculture, Soil Science. -
電子資源:	http://pqdd.sinica.edu.tw/twdaoapp/servlet/advanced?query=1482450
ISBN:	9781124267739

Utilization of gypsum as a filter material in agricultural drainage ditches: Impacts of land application on soil fertililty conditions.
Grubb, Karen Lyn.

Utilization of gypsum as a filter material in agricultural drainage ditches: Impacts of land application on soil fertililty conditions. - 82 p.

Source: Masters Abstracts International, Volume: 49-02, page: 1070.

Thesis (M.S.)--University of Maryland, College Park, 2010.

Agricultural drainage ditches can provide a direct connection between fields and surface waters, and some have been shown to deliver high loads of phosphorus (P) to sensitive water bodies. A potential way to reduce nutrient loads in drainage ditches is to install filter structures containing P sorbing materials (PSMs) including gypsum to remove P from ditch flow. One projected advantage would be the potential application of spent PSMs to agricultural fields to provide nutrients for crop production after the filter has lost its effectiveness. The study evaluated the feasibility of this strategy. Gypsum was saturated at two levels on mass basis of P, and applied to two soil types, a silt loam and a sandy loam and applied at both a high and low rate. The treated soils were incubated at 25°C, and samples were collected at 0, 1, 7, 28, 63, 91, 119, and 183 days after saturation.

ISBN: 9781124267739Subjects--Topical Terms:

1017824
Agriculture, Soil Science.

Utilization of gypsum as a filter material in agricultural drainage ditches: Impacts of land application on soil fertililty conditions.
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