Production of a film protecting asparagus plants consists of incorporation of dyes and unsaturated fatty acid in polyolefin

摘要

The production of a film protecting asparagus plants comprises addition to e.g. polyolefin of phthalocyanine blue 0.5-0.8 and chrome yellow 0.7-1 per cent respectively together with 1-5 per cent of unsaturated fatty acids. - An INDEPENDENT CLAIM is included for the film product, which is a photoselective film.