NDLI: Assessing solar energy and water use efficiencies in winter wheat

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Assessing solar energy and water use efficiencies in winter wheat

Content Provider	NASA Technical Reports Server (NTRS)
Author	Asrar, G. Kanemasu, E. T. Hipps, L. E.
Copyright Year	1982
Description	The water use and solar energy conversion efficiencies of two cultivars of winter wheat (Triticum aestivum L., vars, Centurk and Newton) planted at three densities, were examined during a growing season. Water use, based on soil moisture depletion, was the lowest under the light, and the highest under the heavy planting densities of both cultivars. Water use efficiency of medium and heavy planting densities were greater than the light planting densities in both cultivars. The canopy radiation extinction coefficients of both cultivars increased with increases in planting density. Efficiency of operation interception of photosynthetically active radiation by both cultivars improved from the time of jointing until anthesis, and then decreased during senescence. The efficiency of the conversion of intercepted radiation to dry matter (biochemical efficiency) decreased throughout the growing season both cultivars. The interception, biochemical, and photosynthetic efficiencies improved as planting density increased.
File Size	1268442
Page Count	23
File Format	PDF
Alternate Webpage(s)	http://archive.org/details/NASA_NTRS_Archive_19830019042
Archival Resource Key	ark:/13960/t3906z91s
Language	English
Publisher Date	1982-09-01
Access Restriction	Open
Subject Keyword	Earth Resources And Remote Sensing Earth Resources Program Canopies Vegetation Data Acquisition Soil Moisture Extinction Insolation Agristars Project Evapotranspiration Water Consumption Agriculture Photosynthesis Wheat Planting Ntrs Nasa Technical Reports Server (ntrs) Nasa Technical Reports Server Aerodynamics Aircraft Aerospace Engineering Aerospace Aeronautic Space Science
Content Type	Text
Resource Type	Technical Report

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