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Bunnik, N.J.J. (author), Verhoef, W. (author), de Jongh, R.W. (author), van Kasteren, H.W.J. (author), Geerts, R.H.M.E. (author), Noordman, H. (author), Uenk, D. (author), de Boer, T.A. (author)Canopy reflectance simulation studies have demonstrated that a simplified relation between leaf area index and reflectance exists for the hot-spot observed at a zenith angle of approximately 52°. Based on this principle a prototype ground-based hot-spot reflectance meter (HSM) has been developed and tested, The objective of the project is to...report 1984
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Bunnik, N.J.J. (author), Verhoef, W. (author), de Jongh, R.W. (author), van Kasteren, H.W.J. (author), Geerts, R.H.M.E. (author), Uenk, D. (author), de Boer, T.A. (author)A new ground-based hot-spot reflectance meter (HSM) has been developed and tested for the estimation of green crop biomass and for crop growth monitoring. The concept of the HSM is based on theoretical studies on canopy hotspot reflectance measurements for a selected oblique illumination and view angle of 52° with respect to the vertical. A...report 1983