Rapid Measurement of Crop Canopy Cover

Autor: Dean V. Armbrust
Rok vydání: 1990
Předmět:
Zdroj: Agronomy Journal. 82:1170-1171
ISSN: 1435-0645
0002-1962
DOI: 10.2134/agronj1990.00021962008200060030x
Popis: Studies of photosynthesis, transpiration, water erosion, and wind erosion can require measurement of crop canopy cover, the percent of the soil surface covered by plant foliage. This study was conducted to evaluate the meter-stick method and an electronic method of measuring canopy cover for accuracy, speed, and ease of use. Canopy cover of winter wheat [ L.], corn [ L.], and soybean [ (L.) Merr] was measured weekly in 1988, using a meter stick and a DECAGON Ceptometer. Canopy cover ranged from 74 to 97% for wheat, 2 to 95% for corn, and 2 to 65% for soybean. There were no significant differences in canopy cover determinations by the two methods. The Ceptometer was faster, simpler, and as accurate as the meter stick.
Databáze: OpenAIRE
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