Urea of foliar spray should not contain biuret more than
A. 5.6%
B. 1.5%
C. 3.4%
D. 7.8%
Answer: Option B
Solution(By Examveda Team)
Urea of foliar spray should not contain biuret more than 1.5%. Fertilizer-grade urea contains the impurity Biuret which is toxic to the plant, especially when applied as a leaf dressing. Thus Biuret more than 1.5% can damage the root of the plant and also useful bacteria and chock the capillary of the root cell, Nitrogen carrying capacity will be reduced.Related Questions on Soil Science
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