Effects of biuret content in urea and nitrogen source on the yield and composition of potato tubers

Sharma, R. C.; Grewal, J. S.; Sud, K. C.; Saini, S. S.

doi:10.1007/bf01928533

Cited by 7 publications

(2 citation statements)

References 4 publications

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“…[21][22][23] Relevant research has indicated that a high concentration of biuret in urea fertilizer is toxic to crops, including its seed, foliage, nitrogen metabolism and protein synthesis. [24][25][26] Additional research has shown that biuret impurity in urea fertilizer is a potential factor that enhances nitrite toxicity, 27 and it can affect the yield and composition of potato tubers 28 Therefore, the concentration of biuret is regarded as an important criterion to evaluate the quality of the urea fertilizer. Currently, liquid chromatography is used to measure the concentration of biuret in urea as an accepted method of the Association of Official Analytical Chemists (AOAC) International.…”

Section: Introductionmentioning

confidence: 99%

A diffuse reflectance portable near infrared spectroscopy system for the determination of biuret content in urea fertilizer

Liu

Sheng

et al. 2022

Journal of Near Infrared Spectroscopy

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Simple, rapid, and reliable determination of the biuret content in urea fertilizer is very important for the development of fertilizer industry. A near infrared diffuse reflectance measurement system with a portable spectrometer was developed, in which the reference and dark background spectrum could also be recorded automatically in addition to the absorbance data. The key performances of the proposed NIR system have been tested on urea fertilizer. Numerical experiments showed that the coefficient of determination (R2) of the external validation set was 0.97, with a root mean square error (RMSE) of 0.04%. The ratios of the performance deviation (RPD) value in the calibration and validation sets were 12 and 3.5, respectively. It can be concluded that this NIR system for the determination of biuret content in urea fertilizer may potentially be used as an alternative method to traditional wet chemical methods due to its simplicity, sensitivity, and portability.

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