Browsing by Author "Parish, D.H."
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Item A note on carbon dioxide profiles in canopies of mature tea and sugar cane in Uganda(1970) Wangati, F. J.; Parish, D.H.; East African Agricultural and Forestry Research Organisation, Muguga, KenyaMeasurements of carbon dioxide concentrations were made at three heights, two inside and one above tea and sugar-cane plantations in Uganda, using an infra-red gas analyser. No systematic difference in CO2 concentration in the atmosphere above and within the tea canopy was observed. There was a large diurnal variation in CO2 concentration above sugar-cane, but the maximum drop in CO2 concentration in the top 30 cm. of the canopy was 25 p.p.m. below atmospheric. The CO2 profiles obtained over sugar-cane were similar to those observed in tall grass and beans (Monteith, 1962) and in corn (Lemon, 1960).Item A Note on Carbon Dioxide Profiles in Canopies Of Mature Tea and Sugar Cane in Uganda(1970) Wangati, F. J.; Parish, D.H.Although carbon dioxide is one of the major environmental factors limiting dry-matter production under otherwise optimum growth conditions, and carbon dioxide enrichment of the atmosphere in which plants are growing is known to increase yields, it has generally been assumed that the level of carbon dioxide in the canopies of growing crops never falls Sufficiently below the level in the air above the crop to affect yields adversely.
