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    Protein and carbohydrate composition of lucerne grown in Canterbury

    Bailey, R. W.; Allison, R. M.; O'Connor, K. F.
    Abstract
    Carbohydrate fractions and total nitrogen were measured in leaves and stems of Wairau lucerne grown in Canterbury. Leaves had lower levels of total soluble carbohydrate (3-5%), cellulose (8-10%) and lignin (2-4%), and higher levels of total N (3.5-5%) than stems (total soluble carbohydrates l0-22%, cellulose 2535%, lignin 4-11% and total N 1.5-4%). During the season, leaves did not change much in composition, whereas stems gradually increased in cellulose and lignin. Wintergrowing lucerne stems contained high total N (up to 4%), low, cellulose (13%) and lignin (4%). Irrigation increased soluble carbohydrate in stems, but not leaves in immature luceme. Defoliation of luceme led to a fall in soluble carbohydrate in the standing stems. About 50% of the lucerne total N was easily extracted from the plant as protein. On a kg/ha basis, a yield of 15, 232 kg of DM (non-irrigated) contained 480 kg of total N, 1,385 kg total soluble carbohydrate and 2,563 kg of cellulose. Over a 70-day summer period, a protein yield of over a metric ton/ha was extracted from irrigated lucerne.... [Show full abstract]
    Keywords
    lucerne; carbohydrate composition; nitrogen; protein
    Fields of Research
    0703 Crop and Pasture Production
    Date
    1970
    Type
    Conference Contribution - published (Conference Paper)
    Collections
    • Department of Agricultural Sciences [1572]
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    Copyright © The Authors and New Zealand Grassland Association.
    Citation
    Bailey, R. W., Allison, R. M. & O'Connor, K. F. (1970). Protein and carbohydrate composition of lucerne grown in Canterbury. In Proceedings of the New Zealand Grassland Association, 32, 127-136
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