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Effect of Biuret Content in Urea on the Growth and Nitrogen uptake of some Grain Crops in Egyptian Soils
Author(s) -
Hadi A. H. Abdel,
Khadr M. S.,
Bakr M. N.
Publication year - 1983
Publication title -
zeitschrift für pflanzenernährung und bodenkunde
Language(s) - English
Resource type - Journals
SCImago Journal Rank - 0.644
H-Index - 87
eISSN - 1522-2624
pISSN - 0044-3263
DOI - 10.1002/jpln.19831460313
Subject(s) - biuret test , loam , soil water , urea , agronomy , chemistry , calcareous , nitrogen , ammonium , fertilizer , alluvial soils , ammonium bicarbonate , environmental science , biology , soil science , botany , organic chemistry , raw material
Seven pot experiments were conducted to study the direct and the accumulative effect of urea containing (0.4, 1.0, 1.5, 2.0, 3.0 and 4.0 %) biuret on the growth of rice, wheat, and maize plants and their N content and N uptake in two fine textured alluvial soils and one sandy clay loam (highly calcareous) soil. It was found that both rice and wheat grain yields were not significantly reduced in all soils where urea containing high percentage of biuret was used namely 3 % and 4 %. Ammonium sulphate fertilizer was superior to urea in plant production only in the sandy clay loam. Moreover, the N recovery was higher in the alluvial soils in comparison to the sandy clay loam. The accumulative addition of biuret to the soils did not further reduce either the growth rate or the N uptake of the plants.