MICROCLIMATE IN THE VERTICAL PROFILE OF WHEAT, RAPE AND MAIZE CANOPIES

The diff erences of air temperature and relative air humidity in wheat, rape and maize canopies at three heights (ground level, eff ective canopy height and 2 meters above the soil surface), and their comparison with the temperature values of the nearest standard climatological station at the height of 2 meters were studied. The microclimatic data were obtained at the fi eld trial station of the Mendel University in Brno in the ?ab?ice municipality (South Moravia) in the canopies of winter wheat, winter rape and maize and from the standard climatological station located immediately next to the canopies. It was found, that wheat, rape and maize canopies microclimate diff ered signifi cantly from those of their surrounding environments. The temperature was usually lower in the ground level and eff ective height in the wheat and rape stands, air humidity was usually higher in these crops. On the other hand, maize canopies had diverse air temperature values during the studied period.