Catalogo Articoli (Spogli Riviste)

OPAC HELP

Titolo:
Nitrate absorption-concentration of Rosa hybrida cv. Sweet Promise grown in soilless culture
Autore:
Bougoul, S; Brun, R; Jaffrin, A;
Indirizzi:
Univ Batna, Unite Rech, Lab Energie Solaire, Batna, Algeria Univ Batna Batna Algeria nite Rech, Lab Energie Solaire, Batna, Algeria
Titolo Testata:
AGRONOMIE
fascicolo: 2, volume: 20, anno: 2000,
pagine: 165 - 174
SICI:
0249-5627(200003)20:2<165:NAORHC>2.0.ZU;2-#
Fonte:
ISI
Lingua:
ENG
Soggetto:
TRANSPIRATION; MODEL;
Keywords:
transpiration; nitrate uptake; absorption concentration; rose plants; models;
Tipo documento:
Article
Natura:
Periodico
Settore Disciplinare:
Agriculture,Biology & Environmental Sciences
Citazioni:
10
Recensione:
Indirizzi per estratti:
Indirizzo: Bougoul, S Univ Batna, Unite Rech, Lab Energie Solaire, Rue Chahid MohamedEl Hadi Boukhlouf, Batna, Algeria Univ Batna Rue Chahid Mohamed El Hadi Boukhlouf Batna Algeria
Citazione:
S. Bougoul et al., "Nitrate absorption-concentration of Rosa hybrida cv. Sweet Promise grown in soilless culture", AGRONOMIE, 20(2), 2000, pp. 165-174

Abstract

Recent measurements of transpiration rates and nitrate intakes of young rose plants grown in NFT are confronted with existing models. The water demand is accurately reproduced by the passive leaf evaporation process described by Penman and Monteith (PM model). The mineral demand is tentatively described by Scaife's Pump-Leak-Buffer (PLB) model. The PLB model predicts for rose plants, contrary to ryegrass, little phase shift between mineral-absorption and solar radiation; as a consequence, it excludes memory effects from the previous day. But some observed features are not accounted for: the saturation of nitrate reduction rate at high solar radiation, the inhibitionof root mineral absorption at high temperature. A modified PLB model (MPLB) is thus proposed, which accurately reproduces nitrate uptake fluctuationsunder strongly varying climatic conditions. Combining PM and MPLB models enables a modelling of the instantaneous absorption-concentration of nitrates in rose plants. It should then be feasible to manage in real time the composition of the root medium used in soilless cultures, so that neither saline stress nor mineral deficiency could affect plant growth.

ASDD Area Sistemi Dipartimentali e Documentali, Università di Bologna, Catalogo delle riviste ed altri periodici
Documento generato il 20/01/21 alle ore 12:29:30