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T1  - Smartphone‐based estimation of green cover depends on the camera used 
SN  -  / 0002-1962 
UR  - http://hdl.handle.net/10138/336730 
T3  - Agronomy Journal. 2021; 001−5 
A1  - Heinonen, Reija; Mattila, Tuomas J. 
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PB  - American Society of Agronomy 
Y1  - 2021 
LA  - en 
AB  - Smartphone-based visual assessment of vegetation cover is a promising, fast, and repeatable approach that allows land managers to compare measurements on their farm with other farms. This study determined the influence of the smartphone device on green cover measurements on several crops. The hypothesis was that different smartphones would provide similar green cover (reflectance) for management purposes (i.e., <10% difference). Forty fields in Finland were sampled between 10 and 28 July 2020 wi... 
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KW  - agronomy; smartphones; vegetation; remote sensing; plants; smart technology; comparison; green cover; smartphone-based; estimation; cameras; Finland; maatalous; älypuhelimet; kasvillisuus; vertailu; kaukokartoitus; viljelykasvit; kasvipeite; älyteknologia; geotieteet; maataloustiede; ympäristötekniikka; kamerat; Suomi 
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