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Titolo:
SIMULATING TILE DRAINAGE AND NITRATE LEACHING UNDER A POTATO CROP
Autore:
MADRAMOOTOO CA; WIYO KAW; ENRIGHT P;
Indirizzi:
MCGILL UNIV,DEPT AGR ENGN,21111 LAKESHORE RD ST ANNE BELLEVUE PQ H9X 3V9 CANADA BUNDA COLL AGR,DEPT AGR ENGN LILONGWE MALAWI
Titolo Testata:
Water resources bulletin
fascicolo: 3, volume: 31, anno: 1995,
pagine: 463 - 473
SICI:
0043-1370(1995)31:3<463:STDANL>2.0.ZU;2-O
Fonte:
ISI
Lingua:
ENG
Soggetto:
NEW-BRUNSWICK; CREAMS MODEL; FIELDS;
Keywords:
AGRICULTURAL HYDROLOGY; DRAINAGE; WATER QUALITY; MODELING, NITRATE; LEACHING;
Tipo documento:
Article
Natura:
Periodico
Settore Disciplinare:
Science Citation Index Expanded
Science Citation Index Expanded
Science Citation Index Expanded
Citazioni:
26
Recensione:
Indirizzi per estratti:
Citazione:
C.A. Madramootoo et al., "SIMULATING TILE DRAINAGE AND NITRATE LEACHING UNDER A POTATO CROP", Water resources bulletin, 31(3), 1995, pp. 463-473

Abstract

A 2.2-hectare potato (Solanum tuberosum L. cv. Chieftain) field at Saint Leonard d'Aston, Quebec (lat. 72 degrees 24' 30 '' long. 46 degrees 5' 30 '') was instrumented to measure tile drain flow over two growing seasons, 1989 and 1990. The soil was a Sainte Jude sandy loam. Soilproperties and nitrate concentrations in the drain flow were measured. The CREAMS (($) under bar Chemicals, ($) under bar Runoff and ($) under bar Erosion from ($) under bar Agricultural ($) under bar Management ($) under bar Systems) computer simulation model was validated for the study site. CREAMS underpredicted event percolation depths. However, total monthly percolation depths were close to observed values. CREAMS overpredicted event nitrate concentrations leached to tile drainage. There was a poor match between predicted and observed event nitrateconcentrations in drain flow (coefficient of predictability, CPA = 104.95). Based on a sensitivity analysis, input parameters, representative of local conditions, were determined for the CREAMS hydrology and nutrient submodels.

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Documento generato il 02/12/20 alle ore 17:57:08