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Humic acids. X. The effect on the root growth of spring wheat of thy mo-hydroquinone as model substance of pre-humic acids or decomposition products of humic acid.



Humic acids. X. The effect on the root growth of spring wheat of thy mo-hydroquinone as model substance of pre-humic acids or decomposition products of humic acid.



Z. PflErnahr. Dung 71: 208-215



Treatment with 0.00025 mg thymohydro-quinone promoted the longitudinal growth of excised root tips on sterile agar nutrient medium containing glucose. Application of the substance to Mitscherlich pots at the rate of 9 mg or to field soil at 1 kg/ha at the time of seeding increased the dry weight of wheat roots.

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