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VOL. 6, ISSUE 3 (2021)
Determination of light and nitrogen extinction coefficient for coffee plant at different growth stages and canopy layers
Authors
Tilahun Negash, Simegn Kinfu, Tamirat Wato Wana, Abera Daba
Abstract
The experiment was undertaken to estimate light and nitrogen extinction coefficient at different growth stages and across canopy layers for each growing stage and to analyze the effect of the Leaf Area Index on canopy light interception of the coffee plant. It was super imposed on those which were planted in a 3 x 3 factorial arrangement in a randomized complete block design with four replications and a total of 36 experimental units. Leaf area index and a fraction of light intercepted (Fi) by the coffee plant there was significant variation among growing stage. The highest LAI (2.75) was obtained from coffee with the age of five years followed by three years old (0.684). The highest Fi (0.63) was also obtained from a plant five years old. The highest LA (43.72 m2) was from five years old and the lowest (22.76 m2) from one year age coffee. The effect of the growing stage for leaf area of coffee was highly significant variation. The light extinction coefficient shows significant variation. The study revealed on nitrogen extinction coefficient very highly significant variations between treatments. Generally, there was a significant influence of variation in growth stages on the light and nitrogen extinction coefficient of the coffee plant.
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Pages:836-841
How to cite this article:
Tilahun Negash, Simegn Kinfu, Tamirat Wato Wana, Abera Daba "Determination of light and nitrogen extinction coefficient for coffee plant at different growth stages and canopy layers ". International Journal of Botany Studies, Vol 6, Issue 3, 2021, Pages 836-841
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