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Field measurements, simulation modeling and development of analysis for moisture stressed corn and soybeans, 1982 studies

Author
Blad, B. L.
Published
Jun 1, 1983.
Physical Description
1 electronic document
Additional Creators
Gardner, B. R. and Norman, J. M.
Online Version

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Unclassified, Unlimited, Publicly available.
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Summary
The experimental design, data acquisition and analysis procedures for agronomic and reflectance data acquired over corn and soybeans at the Sandhills Agricultural Laboratory of the University of Nebraska are described. The following conclusions were reached: (1) predictive leaf area estimation models can be defined which appear valid over a wide range of soils; (2) relative grain yield estimates over moisture stressed corn were improved by combining reflectance and thermal data; (3) corn phenology estimates using the model of Badhwar and Henderson (1981) exhibited systematic bias but were reasonably accurate; (4) canopy reflectance can be modelled to within approximately 10% of measured values; and (5) soybean pubescence significantly affects canopy reflectance, energy balance and water use relationships.
Other Subject(s)
Collection
NASA Technical Reports Server (NTRS) Collection.
Note
Document ID: 19830026137.
Accession ID: 83N34408.
NASA-CR-171692.
E83-10417.
SR-83-04429.
NAS 1.26:171692.
CAMAC-83-5.
Terms of Use and Reproduction
No Copyright.
View MARC record | catkey: 15711565