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Effect of dicyandiamide and hydroquinone on the transformation of urea-nitrogen-15 in soil cropped to wheat

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Abstract.

A pot experiment with a loam soil and spring wheat as test crop showed that an application of dicyandiamide (DCD), and especially its combination with hydroquinone (HQ), gave a much larger recovery of soil urea-15N than treatments based on the application of urea alone or urea plus HQ. Most of the urea-15N applied to soil was present as organic plus chemically fixed 15N in the DCD and DCD plus HQ treatments. These two treatments showed the smallest accumulation of urea-derived (NO3 +NO2 )-15N. Under well-drained conditions, there was a synergistic effect of the nitrification inhibitor DCD and the urease inhibitor HQ on urea-15N transformations and the recovery of fertilizer 15N in soil after the application of urea.

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Xu, X., Huang, Y., Zhou, L. et al. Effect of dicyandiamide and hydroquinone on the transformation of urea-nitrogen-15 in soil cropped to wheat. Biol Fertil Soils 34, 286–290 (2001). https://doi.org/10.1007/s003740100393

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  • DOI: https://doi.org/10.1007/s003740100393

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