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Nutrient cycling in the vegetable processing industry: Utilization of potato by-products

Potato (Solanum tuberosum) production in Canada and the United States totals approximately 30 × 106 Mg yr -1 . Approximately half of this is unsuitable for human consumption. This potato by-product comprises cull potatoes and potato processing waste (PPW). Liquid waste from processing plants can be...

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Published in:Canadian journal of soil science 2006-08, Vol.86 (4), p.621-629
Main Authors: Charmley, E, Nelson, D, Zvomuya, F
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Nelson, D
Zvomuya, F
description Potato (Solanum tuberosum) production in Canada and the United States totals approximately 30 × 106 Mg yr -1 . Approximately half of this is unsuitable for human consumption. This potato by-product comprises cull potatoes and potato processing waste (PPW). Liquid waste from processing plants can be applied to agricultural land. With strict environmental monitoring and control, crops such as corn (Zea mays L.), vegetables and grass can be used to divert large volumes of liquid waste. Solid waste and culls have traditionally been put in landfills or disposed of on agricultural land as a fertilizer. However these can be diverted from landfill sites or agricultural land and used as a high-quality animal feed, principally in beef feedlots. Research has shown that PPW can replace corn and barley (Hordeum vulgare L.) grain without negative effects on growth of beef cattle or meat quality. Indeed, efficiency of animal growth per unit diet intake is improved. These effects have been observed with diets containing up to 80% PPW. Results to date suggest that PPW is a valuable livestock feed ingredient and has no deleterious effects on beef quality. In areas where PPW is available, feeding to beef cattle represents a viable alternative to other disposal options. Key words: Potato, processing waste, by-product, cattle, land disposal
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Approximately half of this is unsuitable for human consumption. This potato by-product comprises cull potatoes and potato processing waste (PPW). Liquid waste from processing plants can be applied to agricultural land. With strict environmental monitoring and control, crops such as corn (Zea mays L.), vegetables and grass can be used to divert large volumes of liquid waste. Solid waste and culls have traditionally been put in landfills or disposed of on agricultural land as a fertilizer. However these can be diverted from landfill sites or agricultural land and used as a high-quality animal feed, principally in beef feedlots. Research has shown that PPW can replace corn and barley (Hordeum vulgare L.) grain without negative effects on growth of beef cattle or meat quality. Indeed, efficiency of animal growth per unit diet intake is improved. These effects have been observed with diets containing up to 80% PPW. Results to date suggest that PPW is a valuable livestock feed ingredient and has no deleterious effects on beef quality. In areas where PPW is available, feeding to beef cattle represents a viable alternative to other disposal options. 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ispartof Canadian journal of soil science, 2006-08, Vol.86 (4), p.621-629
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source Freely Accessible Journals
subjects agricultural land
animal performance
feeds
fertilizers
livestock
meat quality
plant byproducts
potatoes
processing waste
ruminants
soil amendments
Solanum tuberosum
waste utilization
wastewater
title Nutrient cycling in the vegetable processing industry: Utilization of potato by-products
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