Extent of Urea Leaching in Soils and its Biochemical Control
Year: 1978
Type: article
Abstract: Downward movement of surface applied urea, with or without addition of commercial urease was studied in columns. Leaching was done with 8-cm water, maintaining 1 cm water-head on the soil surface, immediately or after 24 hours of urea application. Most of the urea leached down with the water front in the initially dry soil. In the soils maintained at 50% field capacity urea peak lagged behind the wetting front. A part of the applied N remained close to the surface when water was applied 24 hours after urea application, which was probably adsorbed as hydrolysed urea (NH+4). Application of the commercial urease prevented the urea from moving down the wet soil, but had little effect in the initially dry soil.
Authors: V. Beri, S.S. Brar, G. S. Sekhon, B.S. Ghuman
Language: English
Topic: Soil and Unsaturated Flow
Subfield: Civil and Structural Engineering
Field: Engineering
Domain: Physical Sciences
SDG: Zero hunger
Open Access status: diamond
OpenAlex ID: W2274699338