Abstract
IN previous communications1,2,3, I have reported my inability to detect appreciable excretion of nitrogenous substances from root nodules of leguminous plants, and thus to confirm the results obtained by Virtanen. During the past summer, further trials have been carried out with soya bean (4 varieties), pea (5 varieties), and broad bean. Three rooting media have been employed, namely, (a) a coarse quartz sand composed of particles of diameter mostly in the region of 0.5 mm. ; (b) a fine quartz sand of particles diameter 0.1–0.3 mm. ; and (c) a very fine quarry sand of particles 0.1 mm. and less, (b) appears to be very similar to the sand used by Virtanen. Open and closed containers have been used, while the tests for excretion consisted of analysis of rooting medium and of barley plants grown in association with the legumes.
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References
Bond, NATURE, 139, 675 (1937).
Bond, NATURE, 140, 683 (1937).
Bond, Ann. Bot. (N.S.), 2 (1938).
Wilson and Burton, J. Agric. Sci., 28, 307 (1938).
Wilson and Wyss, Proc. Soil Sci. Soc., 289 (1937).
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BOND, G. Excretion from Leguminous Root Nodules. Nature 142, 539 (1938). https://doi.org/10.1038/142539b0
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DOI: https://doi.org/10.1038/142539b0
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