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Titolo:
A modified Mitscherlich equation for rainfed crop production in semi-arid areas: 2. Case study of cereals in Syria
Autore:
Harmsen, K;
Indirizzi:
Int Inst Aerosp Survey & Earth Sci ITC, NL-7500 AA Enschede, Netherlands Int Inst Aerosp Survey & Earth Sci ITC Enschede Netherlands NL-7500 AA s
Titolo Testata:
NETHERLANDS JOURNAL OF AGRICULTURAL SCIENCE
fascicolo: 3-4, volume: 48, anno: 2000,
pagine: 251 - 272
SICI:
0028-2928(200012)48:3-4<251:AMMEFR>2.0.ZU;2-J
Fonte:
ISI
Lingua:
ENG
Soggetto:
MEDITERRANEAN-TYPE ENVIRONMENT; WATER-USE EFFICIENCY; APPLIED NITROGEN; WHEAT; AGRICULTURE; VARIETIES; FIELD;
Keywords:
nutrient-use efficiency; nutrient availability; nitrogen; phosphorus; nutrient uptake; water balance;
Tipo documento:
Article
Natura:
Periodico
Settore Disciplinare:
Agriculture,Biology & Environmental Sciences
Citazioni:
26
Recensione:
Indirizzi per estratti:
Indirizzo: Harmsen, K Int Inst Aerosp Survey & Earth Sci ITC, POB 6, NL-7500 AA Enschede, Netherlands Int Inst Aerosp Survey & Earth Sci ITC POB 6 Enschede Netherlands NL-7500 AA
Citazione:
K. Harmsen, "A modified Mitscherlich equation for rainfed crop production in semi-arid areas: 2. Case study of cereals in Syria", NETH J AGR, 48(3-4), 2000, pp. 251-272

Abstract

In a companion paper, a theoretical framework for the application of the Mitscherlich equation to describe nutrient response for rainfed crop production is presented. Water-limited potential, or maximum, yield is assumed to be a linearly increasing function of seasonal rainfall. In addition, the quantity of nutrients required by a crop to achieve water-limited potential yield and the nutrient availability are also expressed as functions of seasonal rainfall. This rainfall-dependent Mitscherlich equation is evaluated using data from agronomic (nitrogen x phosphorus) experiments conducted underrainfed conditions in the semi-arid region of Syria. The analysis showed that rainfall explained most of the variation in yield between locations andseasons, but that the moisture-dependent nutrient part of the Mitscherlichequation explained a small but significant part of the yield variation as well. The model discussed in this paper appears to provide a framework for a Mitscherlich-type approach to describing crop response to nutrient availability c.q. fertilizer application under rainfed conditions in the semi-arid regions.

ASDD Area Sistemi Dipartimentali e Documentali, Università di Bologna, Catalogo delle riviste ed altri periodici
Documento generato il 27/11/20 alle ore 07:31:38