The yields of extracted protein and of residual fiber from potato haulm taken as a by-product.
In July the yield of protein extractable from potato haulm could be 600 kg/ha and the beginning of September it is 200 kg/ha. The yield of fiber containing 1 to 2% N is less affected by maturity. The annual waste of extractable protein, suitable for feeding nonruminants, is about 60,000 tons. The contribution that some small changes in conventional potato husbandry might make to minimizing this waste is discussed.
D000821:Animal Feed; D005504:Food Analysis; D009584:Nitrogen / Q000032:analysis; D010936:Plant Extracts / Q000032:analysis*; D010940:Plant Proteins / Q000032:analysis*; D014675:Vegetables
D010936:Plant Extracts; D010940:Plant Proteins; D009584:Nitrogen