Temperatūros kitimas dirvos paviršiuje piktžolių terminio naikinimo procese

Abstract

In the thermal weed process high temperature media heats not only plants to be thermally damaged, but the soil surface as well. The possibilities of thermal damage of the sprouting agricultural plants, seeds and shoots in the soil surface layer are analyzed in the article. It's investigated, that using hot water steam the soil surface layer is heated. Weed shoots in up to 1.1 mm depth can be destracted when thermal effect lasts 1-2 sec. Using burning gas for thermal effect, the twice longer time-exposure doesn't affect weed seeds in the surface soil layer