Plant Physiol. Bio-Rad Microplate Reader
HOME HELP FEEDBACK SUBSCRIPTIONS ARCHIVE SEARCH TABLE OF CONTENTS
QUICK SEARCH:   [advanced]


     

Plant Physiology 43:522-526 (1968)
© 1968 American Society of Plant Biologists

This Article
Right arrow Full Text (PDF)
Right arrow Alert me when this article is cited
Right arrow Alert me if a correction is posted
Services
Right arrow Email this article to a friend
Right arrow Similar articles in this journal
Right arrow Similar articles in PubMed
Right arrow Alert me to new issues of the journal
Right arrow Download to citation manager
Right arrow reprints & permissions
Citing Articles
Right arrow Citing Articles via CrossRef
Right arrow Citing Articles via Google Scholar
Google Scholar
Right arrow Articles by Hunt, L. A.
Right arrow Articles by Lemon, E. R.
Right arrow Search for Related Content
PubMed
Right arrow PubMed Citation
Right arrow Articles by Hunt, L. A.
Right arrow Articles by Lemon, E. R.
Agricola
Right arrow Articles by Hunt, L. A.
Right arrow Articles by Lemon, E. R.
Articles

Estimates of the Diffusion Resistance of Some Large Sunflower Leaves in the Field 1

L. A. Hunt, Ivan I. Impens and E. R. Lemon2

Microclimate Investigations, SWC, ARS, USDA, Tower Road, Ithaca, New York 14850, United States Plant, Soil and Nutrition Laboratory, Tower Road, Ithaca, New York 14850

Studies were made of resistance to gaseous exchange between large sunflower leaves and the bulk air in a crop canopy. Two components of the diffusive pathway for mass and sensible heat were evaluated; A) the resistance from the interior of the leaf to the leaf surface, and B) the resistance from the surface of the leaf through the leaf boundary air layer to the bulk air.

It was found that: A) leaf resistance not only displays diurnal trends but shorter fluctuations, and B) boundary air layer resistance was significantly smaller than predicted from classical boundary layer formulae.

2 Formerly Research Associates, Department of Agronomy, Cornell University; presently with the University of Guelph, Ontario, and the State Agricultural University, Ghent, Belgium, respectively; Research Soil Scientist. USDA and Professor in Agronomy, Cornell University, Ithaca, New York.

1 Contribution from the Northeast Branch of the Soil and Water Conservation Research Division, ARS, USDA, cooperating with the New York State Agricultural Experiment Station at Cornell University. The work was supported in part by the Atmospheric Sciences Research Division, United States Army Electronics Command, Fort Huachuca, Arizona. Department of Agronomy Series Paper No. 765.






HOME HELP FEEDBACK SUBSCRIPTIONS ARCHIVE SEARCH TABLE OF CONTENTS
ASPB Publications PLANT PHYSIOLOGY THE PLANT CELL
Copyright © 1968 by the American Society of Plant Biologists