Catalogo Articoli (Spogli Riviste)

OPAC HELP

Titolo:
Azodyn: a simple model simulating the date of nitrogen deficiency for decision support in wheat fertilization
Autore:
Jeffroy, MH; Recous, S;
Indirizzi:
INRA, INA PG, Unite Agron, F-78850 Thiverval Grignon, France INRA Thiverval Grignon France F-78850 F-78850 Thiverval Grignon, France INRA, Unite Agron, F-02007 Laon, France INRA Laon France F-02007INRA, Unite Agron, F-02007 Laon, France
Titolo Testata:
EUROPEAN JOURNAL OF AGRONOMY
fascicolo: 2, volume: 10, anno: 1999,
pagine: 129 - 144
SICI:
1161-0301(199903)10:2<129:AASMST>2.0.ZU;2-1
Fonte:
ISI
Lingua:
ENG
Soggetto:
MEDITERRANEAN-TYPE ENVIRONMENT; SOIL-CROP SYSTEM; WINTER-WHEAT; N-15-LABELED FERTILIZER; SOLAR-RADIATION; DRY-MATTER; NITRATE; INTERCEPTION; INFORMATION; CHLOROPHYLL;
Keywords:
Azodyn; fertilization; model; N balance method; nitrogen; plant N requirement; soil N supply;
Tipo documento:
Article
Natura:
Periodico
Settore Disciplinare:
Agriculture,Biology & Environmental Sciences
Citazioni:
69
Recensione:
Indirizzi per estratti:
Indirizzo: Jeffroy, MH INRA, INA PG, Unite Agron, BP 01, F-78850 Thiverval Grignon, France INRA BP 01 Thiverval Grignon France F-78850 l Grignon, France
Citazione:
M.H. Jeffroy e S. Recous, "Azodyn: a simple model simulating the date of nitrogen deficiency for decision support in wheat fertilization", EUR J AGRON, 10(2), 1999, pp. 129-144

Abstract

A dynamic soil-crop model was developed to predict the date on which N deficiency occurs for winter wheat crops in the temperate climate of NorthwestEurope. It is based on the daily simulation of soil N supply and crop N requirement for the period during which N-fertilizer is usually applied to wheat crops, the end of winter until flowering. The soil sub-model was derived from the 'balance-sheet method' used in France for nitrogen fertilizationrecommendations. It describes the net mineralization of various sources oforganic matter (soil humus, crop residues, organic products). The crop sub-model simulates crop biomass production and its nitrogen content using a radiation use efficiency model and a critical dilution curve for nitrogen content. Both soil and crop sub-models require few parameters and inputs, most of which are readily available on commercial farms, together with daily climatic data. The model tested with various rates and timings of N application in three experiments accurately simulated the date on which nitrogen deficiency began in wheat crops, The interest in using the model for tacticaland strategic approaches is discussed. (C) 1999 Elsevier Science B.V. All rights reserved.

ASDD Area Sistemi Dipartimentali e Documentali, Università di Bologna, Catalogo delle riviste ed altri periodici
Documento generato il 22/10/20 alle ore 02:53:54