Weed species commonly colonize archaeological sites in the Mediterranean region, which poses many issues for sites’ function and state of preservation monuments. Soil solarization was investigated as an alternative environmentally friendly weed control strategy following legislative limits on use herbicides at Greece. The aim study to evaluate effectiveness applied during: (a) summer (the hotte...

1. The effect on oxygen evolution of Chlorella vulgaris produced by light intensities up to about 40,000 f.-c. has been studied by the use of the Warburg technique. 2. Above a certain critical intensity, which is determined by the previous history of the cells, the rate of oxygen evolution decreases from the maximum to another constant rate. This depression is at first a completely reversible e...