Leaching losses of two nutrients and an herbicide from two sandy soils during transient drainage

Journal Article · Mon Sep 01 04:00:00 EDT 1980 · Soil Sci.; (United States)

DOI:https://doi.org/10.1097/00010694-198009000-00005· OSTI ID:5967517

Mansell, R S; Wheeler, W B; Calvert, D W

Shallow-tilled (ST) and deep-tilled (DT) plots of an acid, sandy soil were used to measure changes in potassium, nitrogen nitrates, and Terbacil concentrations in subsurface drainage water from the plots. Fertilizer and Terbacil herbicide was applied to the soil. Transient water flow was applied to the plots for a 2-wk period after 7.6 cm of irrigation had been achieved. Drainage water contained higher concentrations of all solutes than did DT drainage water. In the DT soil, the discharges of potassium, nitrogen producing nitrates, and terbacil were only 29.6, 37.0, and 13.9% respectively as large as those in the ST soil. Total cumulative drainage from DT soil was only 51.1% that from ST soil. Thus, relatively small quantities of irrigation and rainfall produced relatively large nutrient discharges. As irrigation was begun soon after fertilizer application, the leaching loss of these solutes would be expected to be greater than if water application had occurred later. 13 references, 8 figures, 5 tables.

• Research Organization: Florida Univ., Gainesville
• OSTI ID: 5967517
• Journal Information: Soil Sci.; (United States), Journal Name: Soil Sci.; (United States) Vol. 130:3; ISSN SOSCA
• Country of Publication: United States
• Language: English

Related Subjects

510200* -- Environment
Terrestrial-- Chemicals Monitoring & Transport-- (-1989)
54 ENVIRONMENTAL SCIENCES
ALKALI METALS
COMPARATIVE EVALUATIONS
CULTIVATION TECHNIQUES
DISPERSIONS
DISSOLUTION
ELEMENTS
ENVIRONMENTAL EFFECTS
FERTILIZERS
HERBICIDES
IRRIGATION
LEACHATES
LEACHING
METALS
MIXTURES
NITRATES
NITROGEN
NITROGEN COMPOUNDS
NONMETALS
NUTRIENTS
OXYGEN COMPOUNDS
PESTICIDES
POTASSIUM
SEPARATION PROCESSES
SOILS
SOLUTIONS