A prototype hand-held patch sprayer for killing weeds, activated by spectral differences in crop/weed canopies

Soil spectra contributions to grass canopy spectral reflectance

Compton J. Tucker, Lee Miller · Photogrammetric Engineering & Remote Sensing · 1977 · 69 citations

Natural Sciences, Earth Sciences, Soil Sciences +14

Albedo of vegetated surfaces: its variability with differing irradiances

K.T. Kriebel · Remote Sensing of Environment · 1979 · 57 citations

Natural Sciences, Earth Sciences, Atmospheric Radiation +11

A photoelectric sensor for distinguishing between plant material and soil

A.W. Hooper, G.O. Harries, B. Ambler · Journal of Agricultural Engineering Research · 1976 · 25 citations

Agriculture, Plant Biology, Plant Sciences +11

Measuring spectral differences in vegetation canopies by a reflectance ratio meter

R. J. Haggar, C.J. Stent, Jeffrey A. Rose · Weed Research · 1984 · 19 citations

Agriculture, Agronomy, Crop Sciences +16

Modification of the Oxford Precision Sprayer - 1965

M. E. Thornton · International Journal of Pest Management Part C · 1966 · 13 citations

Agriculture, Precision Agriculture, Instrumentation +9