SEEDLING CONTAINER

1369124 Seedling plugs RESEARCH COUNCIL OF ALBERTA 20 June 1972 [28 June 1971] 28812/72 Heading A1E A seedling plug is formed by mixing peat having a Van Post rank of 1-3 with between 60 and 95% by weight of water, compressing and extruding it into a plastics tube, and slicing it into lengths, the r...

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Bibliographische Detailangaben
Hauptverfasser:	CREIGHTON, STEPHEN M, MITCHELL, DAVID L, KAY, WILLIAM C
Format:	Patent
Sprache:	eng
Schlagworte:	AGRICULTURE ANIMAL HUSBANDRY CHEMISTRY CULTIVATION OF VEGETABLES, FLOWERS, RICE, FRUIT, VINES, HOPSOR SEAWEED FERTILISERS FISHING FORESTRY HORTICULTURE HUMAN NECESSITIES HUNTING MANUFACTURE THEREOF METALLURGY ORGANIC FERTILISERS NOT COVERED BY SUBCLASSES C05B, C05C, e.g. FERTILISERS FROM WASTE OR REFUSE TRAPPING WATERING
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Zusammenfassung:	1369124 Seedling plugs RESEARCH COUNCIL OF ALBERTA 20 June 1972 [28 June 1971] 28812/72 Heading A1E A seedling plug is formed by mixing peat having a Van Post rank of 1-3 with between 60 and 95% by weight of water, compressing and extruding it into a plastics tube, and slicing it into lengths, the resulting plug 13 having dry weight/wet volume density of between 0.08 and 0.4. Preferably between 70 and 85% by weight of water is used giving a plug with a dry weight/wet volume density of between 0.13 and 0.25. The extrusion apparatus comprises: a screw 1 with a varied flight lead to give a compression ratio of 2 or 3:1, an electric motor 3, a hopper 7 for the peat mixture, and a head 5 and nozzle 7 coated with polytetrafluoroethylene. A 15 foot long, 1 mil thick, 1 inch diameter polyethene tube 9 is threaded onto the nozzle 6, and the peat mixture extruded into the tube. The resulting rod is sliced into 3 inch lengths by a gang cutter.