Browsing by Author "Downey, R.K."
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Item Canola seed as affected by swathing time(2006-03-02) Vera, C.L.; Downey, R.K.; Woods, S.M.; Raney, J.P.; McGregor, D.I.; Elliot, R.H.; Johnson, E.N.Yield, weight, protein content (oil-free meal) and oil content of canola seed increased as seeds developed. Maximum values were obtained between 45-49 days after flowering, when seed moisture was 29-38%. Fatty acid composition of canola seed oil changed during seed development. The proportion of oleic (C18:1) and linolenic (C18:3) acids increased, while that of most other fatty acids decreased, as seeds developed, while Eicosenoic (C20:1) and erucic (C22:1) acids did not show a clear trend. Fatty-acids tended to stabilize by the 49th day after flowering. Early seeding resulted in higher seed yield, larger seeds, lower seed protein content and higher seed oil content, when compared to late seeding.Item The effect of climate on the yield and growth of canola in western Canada(1995-02-23) Nuttall, W.F.; Downey, R.K.; Raney, J.P.The effect of temperature and precipitation on the yield and quality of Tobin canola has been determined by a statistical method known as regression analyses. The equations obtained from this analyses were used to show how an increase in maximum temperature in the growing season reduced yield, increased protein, decreased oil content and decreased time to maturity. The equations, also, showed that increased rainfall increased yield, decreased protein, and increased time to maturity. Lower minimum temperatures were associated with higher chlorophyll content of seed. The information could be used by farmers and researchers as an index of suitability of either Polish (Brassica rapa L.) or Argentine (Brassica napus L.) cultivars for production areas in the Province.Item State of science in Canada(1992-02-20) Downey, R.K.