Abstract
RECENT physiological studies on nutrition and growth have shown that leaf area is a reliable index of growth factors determining dry matter accumulation, carbohydrate metabolism, yield and quality of crops1–9,12. Various methods have therefore been devised for measuring the total leaf surface on a growing plant. Of these, mention may particularly be made of : (1) methods based on tracing individual leaves and determining their respective area by planimeter; (2) use of sensitized photopapers, (3) photo-electric devices of various types, (4) adoption of cardboards of known area approximating to the area of different type leaves, and lastly (5) use of mathematical formulæ based on certain leaf measurements. The utility of one or the other of these methods has been stressed by different investigators.
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LAL, K., SUBBA RAO, M. A Rapid Method of Leaf Area Determination. Nature 167, 72 (1951). https://doi.org/10.1038/167072a0
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DOI: https://doi.org/10.1038/167072a0
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