Method for vinteroverfladegoedskning of efteraarsudsaaninger

摘要

Chemical fertilisers for the superficial dunging of snow-covered vegetation, especially the autumn vegetation, and perennial plants, which are dyed a dark colour with 0.0001 to 3% by weight of one or more dark dyes and/or 7 to 93% by weight of one or more inert additives. The invention also relates to the use of these dyed chemical fertilisers for scattering in a manner known per se on the vegetation area. Owing to the dark coloration of these chemical fertilisers, they warm more rapidly than their surroundings and the individual particles sink into the snow covering. As a result, they can no longer be washed away in the case of later rain or of sudden melting of the snow. Due to the sinking in, the particles produce holes which serve to aerate the vegetation and at the same time improve the heat insulating capacity of the snow. Melting of the snow occurs somewhat earlier in the areas dunged in this way, since the entire snow covering is heated by means of the dark chemical fertiliser.