Sap extraction device for sampling potato leaves and tubers


An adaptation of a metal shop crimping machine with knurled rollers and driven with a foot-switch activated, geared-down electric motor was used to express sap from potato foliage or tuber pieces placed in triangular polythylene envelopes. Approximately 150–180 leaf samples/hour were processed by one operator. This sap extraction system eliminated the need… (More)
DOI: 10.1007/BF02854029


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