Boronic content of domestic roughages and leaf-fodders
1989
Tolgyesi, Gy. (Allatorvostudomanyi Egyetem, Budapest (Hungary). Takarmanyozastani Tanszek)
As an average, about 25.6 mg/kg of boronic content, referred to the dry matter content of roughage, was found on 7385 samples, originating from 112 families and 1069 species of Hungarian higher plants. The mean boronic content of individual plant families varied between 6.7 and 43.1 mg/kg. The lowest values were measured in the grasses, while the values found on papilionaceae were near to the mean value of the vegetation cover. 30-35 cm long leaf covered spronts of arborescent vegetation, representing leaf-fodder, also contained average concentrations of boron, except for the pinaceae that contained lower values. Of the cultivated roughages, cereals, Sudan grass (Sorghum vulgare sudanense) and maize contained low values of boron (between 6 to 12 mg/kg), papillaceae, similarly to the wild growing papillaceae, contained average values, while alfalfa contained about 43 mg/kg of boron. Of the cultivated roughages, sunflower proved to be the richest in boronic content. In case of meadow hay, the boronic content depends on the ratio of monocotyledons and dicotyledons, similarly to their calcium content. Boronic concentrations of different plants' taxa showed a tendency-like correlation with their Ca, K, P and S contents.
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