東華大學圖書館 |

語系: 繁體中文

說明(常見問題)

回圖書館首頁

手機版館藏查詢

登入

回首頁

切換: 標籤 | MARC模式 | ISBD

Validacion del indice de forsforo de...

Ortega Achury, Sandra Liliana.

FindBook

Google Book

Amazon

博客來

Validacion del indice de forsforo del caribe y evaluacion de practicas de manejo de desechos organicos en fincas de produccion animal de Puerto Rico (Spanish text).

紀錄類型:	書目-電子資源 : Monograph/item
正題名/作者:	Validacion del indice de forsforo del caribe y evaluacion de practicas de manejo de desechos organicos en fincas de produccion animal de Puerto Rico (Spanish text)./
作者:	Ortega Achury, Sandra Liliana.
面頁冊數:	191 p.
附註:	Source: Masters Abstracts International, Volume: 43-06, page: 2068.
Contained By:	Masters Abstracts International43-06.
標題:	Agriculture, Soil Science. -
電子資源:	http://pqdd.sinica.edu.tw/twdaoapp/servlet/advanced?query=1427026
ISBN:	9780542136634

Validacion del indice de forsforo del caribe y evaluacion de practicas de manejo de desechos organicos en fincas de produccion animal de Puerto Rico (Spanish text).
Ortega Achury, Sandra Liliana.

Validacion del indice de forsforo del caribe y evaluacion de practicas de manejo de desechos organicos en fincas de produccion animal de Puerto Rico (Spanish text). - 191 p.

Source: Masters Abstracts International, Volume: 43-06, page: 2068.

Thesis (M.S.)--University of Puerto Rico, Mayaguez (Puerto Rico), 2005.

Nutrient losses from agricultural soils are one of the principal causes of surface water quality impairment. A study was conducted in animal operations (dairy cattle and poultry) of Puerto Rico, to quantify nitrogen (TKN), phosphorus (DP and TP), dissolved organic carbon (COD) and heavy metal (Cu, Fe, Zn) runoff concentrations. Results were used to validate at the field level the Caribbean Phosphorus Index (CPI), a tool developed for the identification of agricultural soils with high risk of P losses to surface waters. Runoff fractionators and a pluviograph were installed in each farm to monitor rainfall duration and intensity. Eighty-five percent of the area in the poultry farm had soil P levels (Olsen) in excess of 35 mg P kg-1. In the dairy farm, only 35% of the total area, exceeded the 35 mg P kg-1 threshold. Average nutrient concentration losses in the poultry farm were 5.87 mg DP L-1, 4.82 mg TP L-1, 0.14 mg Cu L-1, 4.33 mg Fe L-1 and 1.36 mg Zn L-1. Those values were significantly higher than concentration losses at the dairy farm (2.29 mg DP L-2 and 1.79 mg TP L-1, 0.03 mg Cu L-1, 0.69 mg Fe L-1 and 0.70 mg Zn L-1). In both farms runoff P concentration exceeded 1 mg L-1, a value that has been tentatively proposed by USEPA as the maximum desirable concentration in surface runoff from agricultural fields. The CPI ranked plots in the dairy manure in the Medium category for P loss vulnerability, and the poultry farm plots in the High category.

ISBN: 9780542136634Subjects--Topical Terms:

1017824
Agriculture, Soil Science.

Validacion del indice de forsforo del caribe y evaluacion de practicas de manejo de desechos organicos en fincas de produccion animal de Puerto Rico (Spanish text).
LDR:02523nmm 2200301 4500 001 1823613
005 20061130142538.5
008 130610s2005 spa d
020 $a 9780542136634
035 $a (UnM)AAI1427026
035 $a AAI1427026
040 $a UnM $c UnM
100 1 $a Ortega Achury, Sandra Liliana. $3 1912714
245 1 0 $a Validacion del indice de forsforo del caribe y evaluacion de practicas de manejo de desechos organicos en fincas de produccion animal de Puerto Rico (Spanish text).
300 $a 191 p.
500 $a Source: Masters Abstracts International, Volume: 43-06, page: 2068.
500 $a Adviser: Gustavo A. Martinez Rodriguez.
502 $a Thesis (M.S.)--University of Puerto Rico, Mayaguez (Puerto Rico), 2005.
520 $a Nutrient losses from agricultural soils are one of the principal causes of surface water quality impairment. A study was conducted in animal operations (dairy cattle and poultry) of Puerto Rico, to quantify nitrogen (TKN), phosphorus (DP and TP), dissolved organic carbon (COD) and heavy metal (Cu, Fe, Zn) runoff concentrations. Results were used to validate at the field level the Caribbean Phosphorus Index (CPI), a tool developed for the identification of agricultural soils with high risk of P losses to surface waters. Runoff fractionators and a pluviograph were installed in each farm to monitor rainfall duration and intensity. Eighty-five percent of the area in the poultry farm had soil P levels (Olsen) in excess of 35 mg P kg-1. In the dairy farm, only 35% of the total area, exceeded the 35 mg P kg-1 threshold. Average nutrient concentration losses in the poultry farm were 5.87 mg DP L-1, 4.82 mg TP L-1, 0.14 mg Cu L-1, 4.33 mg Fe L-1 and 1.36 mg Zn L-1. Those values were significantly higher than concentration losses at the dairy farm (2.29 mg DP L-2 and 1.79 mg TP L-1, 0.03 mg Cu L-1, 0.69 mg Fe L-1 and 0.70 mg Zn L-1). In both farms runoff P concentration exceeded 1 mg L-1, a value that has been tentatively proposed by USEPA as the maximum desirable concentration in surface runoff from agricultural fields. The CPI ranked plots in the dairy manure in the Medium category for P loss vulnerability, and the poultry farm plots in the High category.
590 $a School code: 0553.
650 4 $a Agriculture, Soil Science. $3 1017824
650 4 $a Environmental Sciences. $3 676987
650 4 $a Chemistry, Agricultural. $3 1021829
690 $a 0481
690 $a 0768
690 $a 0749
710 2 0 $a University of Puerto Rico, Mayaguez (Puerto Rico). $3 1017811
773 0 $t Masters Abstracts International $g 43-06.
790 1 0 $a Martinez Rodriguez, Gustavo A., $e advisor
790 $a 0553
791 $a M.S.
792 $a 2005
793 $a Spanish
856 4 0 $u http://pqdd.sinica.edu.tw/twdaoapp/servlet/advanced?query=1427026