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INFLUENCE OF SKY CONDITIONS ON ESTIMATION OF PHOTOSYNTHETIC PHOTON FLUX DENSITY FOR AGRICULTURAL ECOSYSTEM
PPFD PAR Solar radiation PAR fraction Quantum-to-energy ratio Diffuse ratio Clearness index Sky conditions
2018/5/16
Photosynthetic photon flux density (PPFD: μmol m−2 s−1) is indispensable for plant physiology processes in photosynthesis. However, PPFD is seldom measured, so that PPFD ...
Comparison of two- and three-electrode systems in measurements of potential oxygen flux density in soil*
soil aeration soil oxygen flux ODR OFD
2008/11/24
This paper presents a comparison of the results of potential flux of oxygen in soil, determined by the voltammetric method, OFD, with the use of a three-electrode set of electrodes in the system of po...
Chronovoltammetric determination of oxygen flux density in the soil
oxygen diffusion rate determination ODR of soil soil aeration oxygen flux density
2008/11/21
A chronovoltammetric method for the determination of oxygen flux density (OFD) in the soil is proposed. The method is based on the current-potential relationship recorded on a platinum indicator elect...
Determination of the background current in electrochemical measurements of oxygen flux density in organic soils
oxygen flux density in the soil measurements ODR OFD
2008/11/21
The aims of this paper were: to state if the soluble substances contained in organic or organic-mineral soils can reduce in the same range of potentials as oxygen, falsifying (revaluing) the results ...