Nutritive glasses for agriculture
AssigneeIsover Saint-Gobain
InventorsGuy Matzen, Denise Blanc, Maryse Montarone
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Abstract
A vitreous product which can be used in agriculture is disclosed. With the exception of nitrogen, this vitreous product contains all the major and minor mineral elements which are essential for the nutrition of plants. The vitreous products can contain the following constituents, taken in the following proportions by weight: ______________________________________ SiO.sub.2 25 to 65% Fe.sub.2 O.sub.3 1 to 15% P.sub.2 O.sub.5 1 to 15% B.sub.2 O.sub.3 0.01 to 2% K.sub.2 O 5 to 35% MnO 0.01 to 3% CaO 11 to 35% ZnO 0.01 to 3% MgO 1 to 10% CuO 0.01 to 2% SO.sub.3 0.01 to 1% MoO.sub.3 0.01 to 3% Na.sub.2 O 0 to 2% Al.sub.2 O.sub.3 0 to 25%. ______________________________________
Claims11
Silicon dioxide-based glass fibers for use in agriculture, comprising at least 25% by weight of silicon dioxide, and, with the exception of nitrogen, all the major and minor nutritive essential elements for the nutrition of plants, said major nutritive essential elements comprising P.sub.2 O.sub.5, K.sub.2 O, CaO, MgO, and SO.sub.3 ;
- said minor nutritive essential elements comprising Fe.sub.2 O.sub.3, B.sub.2 O.sub.3, MnO, ZnO, CuO and MoO.sub.3 ;
- said elements being capable of being removed by a plant's root system from an ambient medium, wherein the quantity and proportion of the said major and minor nutritive elements in said glass fibers are selected such that said nutritive elements are soluble and can be assimilated by the plant.
Dependencies are inferred from the claim text.