Companies specifically specialized in meteorological stations for use in agriculture are , Campbell Scientific, Desert Sage Technology, Spectrum Technologies, ELE, Delta-T, ETG, Unidata, Li-Cor and CID.
For spectroscopic light measurements see ASDI.
Voice answering devices are available from Sphere Communications.
For solar radaition measurement using pyranometers see the solar page.
See also evaporation.
See also plants.