The yield and quality of astringent and mineral matter in leaves of some pear cultivars
1987
Krstic-Pavlovic, N. (Poljoprivredni fakultet, Beograd (Yugoslavia). Institut za hortikulturu) | Dzamic, R. (Poljoprivredni fakultet, Beograd (Yugoslavia). Instutut IPAFAM)
The obtained results of a study of 5 pear varieties and a wild pear (Pyrus communis L.), show that the leaves of the cultivated varieties contain astringent elements, i.e. tannins which belong to a group of condensed (catechins) tannins. The amount of tannins varies in some of the varieties depending on the stage of growth and development. The N, P, and K content in leaves of the wield growing pears and some cultivars has a tendency towards decreasing during the vegetation period.
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