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Titolo:
Maize ear temperature
Autore:
Khabba, S; Ledent, JF; Lahrouni, A;
Indirizzi:
Fac Sci Semlalia, Dept Phys, Marrakech, Morocco Fac Sci Semlalia Marrakech Morocco lalia, Dept Phys, Marrakech, Morocco Univ Catholique Louvain, ECOP Grandes Cultures, B-1348 Louvain, Belgium Univ Catholique Louvain Louvain Belgium B-1348 , B-1348 Louvain, Belgium
Titolo Testata:
EUROPEAN JOURNAL OF AGRONOMY
fascicolo: 3, volume: 14, anno: 2001,
pagine: 197 - 208
SICI:
1161-0301(200105)14:3<197:MET>2.0.ZU;2-E
Fonte:
ISI
Lingua:
ENG
Soggetto:
CANOPY; GROWTH; MODEL;
Keywords:
maize; ear; temperature; solar radiation;
Tipo documento:
Article
Natura:
Periodico
Settore Disciplinare:
Agriculture,Biology & Environmental Sciences
Citazioni:
27
Recensione:
Indirizzi per estratti:
Indirizzo: Khabba, S Fac Sci Semlalia, Dept Phys, POB 2390, Marrakech, Morocco Fac Sci Semlalia POB 2390 Marrakech Morocco Marrakech, Morocco
Citazione:
S. Khabba et al., "Maize ear temperature", EUR J AGRON, 14(3), 2001, pp. 197-208

Abstract

An experimental study of ear temperature was made in Morocco (June, 1997) and in Belgium (September, 1998). Measurements were made at mid-length of ear in the centre of cob and at different points in the middle of grains. The results showed that temperature in the middle of the grains: depends significantly on the position of grain around the ear axis, especially in Morocco, between 13 and 16 h (UT). The result obtained shoed that, because of the considerable ear thermal inertia and non-isotropic direction of the direct solar radiation, the average temperatures in the middle of the grain and in the centre of the cob were similar. The difference between grain and airtemperature was shown to be clearly more affected by solar radiation than by wind speed. The protection of ear against direct solar radiation led to an average temperature reduction of about 2.1 degreesC in ear protected compared with normal ears. Also, the important role played by the canopy on ear temperature was underlined. A temperature difference of up to 8.5 degreesC was observed between the temperature of ears exposed to direct radiation and other (normal) ears. The effects of the differences observed between grain temperatures on both final weight grain and kernel growth rate were calculated using CERES-Maize functions. These effects were shown unlikely to affect drastically grain yield. (C) 2001 Elsevier Science B.V. All rights reserved.

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Documento generato il 22/02/20 alle ore 11:56:50