Effect of urease inhibitor hydroquinone on the efficiency of urea fertilizer
1988
Zhou Likai | Wu Guanyun | Zhang Zhiming (Academia Sinica, Shenyang (China). Inst. of Forestry and Pedology)
Results of simulation, pot and field experiments with brown earth showed that (1) the inhibition rate of soil urease activity by hydroquinone increased with increasing application rate of the latter, and the duration necessary for the restoration of urease activity decreased with decreasing application rate of this organic compound; (2) applying proper amount of hydroquinone increased the utilization rate of urea-N by spring wheat and decreased the gaseous loss of urea-N; (3) applying proper amount of hydroquinone and urea before sowing without topdressing of urea in growing period markedly increased the yield of maize; and (4) in treatments of applying hydroquinone, no accumulation of this compound was found in soils, stems and grains.
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