PLANT MOISTURE AVAILABILITY ASSESSMENT

Soil and Plant Nitrogen Availability

Spectrum Availability Assessment

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Availability of Soil Moisture for Active Absorption in Drying Soil.

There is considerable disagreement as to whether or not water is equally available to plants in drying soil over the entire range from field capacity to wilting percentage. Some workers have repeatedly stated that water is equally available over this range (5, 18, 23, 24) while considerable data have accumulated which indicate that physiological processes in plants are altered as a result of de...

Terrestrial plant productivity and soil moisture constraints

Croplands cover 12% of the ice-free land surface and play an important role in the global carbon cycle. Light use efficiency (LUE) models have often been employed to estimate the exchange of CO2 between croplands and the atmosphere. A key parameter in these models is the maximum light use efficiency ( *NPP), but estimates of *NPP vary by at least a factor 2. Here we used 12 agricultural eddy-fl...

Book Availability: Academic Library Assessment

In the climate of increasing calls for academic assessment, the authors undertook a study to ascertain book availability in an academic library. The study described here uses the methodology pioneered by Tefko Saracevic, W. M. Shaw, Jr., and Paul Kantor and is a follow-up of earlier research reported in College & Research Libraries in 1987. The authors designed the study to identify any improve...