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Phosphorus runoff from two water sources on a calcareous soil

Deslave de Fósforo de Dos Fuentes de Agua en un Suelo Calcáreo

Aase, J.K. and Bjorneberg, D.L. and Westermann, D.T. (2001) Phosphorus runoff from two water sources on a calcareous soil. Journal of Environmental Quality. 30:1315-1323.

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Phosphorus (P) in irrigation runoff may enrich offsite water bodies
and streams and be influenced by irrigation water quality and antecedent
soil surface conditions. Runoff, soil loss, and P fractions in runoff
using reverse osmosis (RO) water or mixed RO and well water (RO/
Tap) were studied in a laboratory sprinkler study to evaluate water
source effects on P transport. A top- or subsoil Portneuf silt loam
(coarse-silty, mixed, superactive, mesic Durinodic Xeric Haplocalcid),
either amended or not amended with manure and/or with cheese
whey, with Olsen P from 20 to 141 mg kg-' and lime from 108 to 243
g kr', was placed in L5 x 1.2 X 0.2-m-deep containers with 2.4%
slope and irrigated three times from a 3-m height for 15 min, applying
20 mm of water. The first irrigation was on a dry loose surface, the
second on a wet surface, and the third on a dry crusted surface. Surface
(ca. 2 cm) soil samples, prior to the first irrigation, were analyzed for
Olsen P, water-soluble P (P„,), and iron-oxide impregnated paper-extractable
P (FeO-P) analyses. Following each irrigation we determined
runoff, sediment, dissolved reactive phosphorus (DRP) in a
0.45-pm filtered sample, and Fe0-P and total P in unfiltered samples.
Soil surface conditions had no effect on P runoff relationships. Water
source bad no significant effect on the relationship between DRP or
FeO-P runoff and soil test P, except for DRP in RO runoff versus
water-soluble soil P (r2 = 0.90). Total P in RO runoff versus soil P
were not related; but weakly correlated for Rd/ Tap (r z < 0.50). Water
source and soil surface conditions had little or no effect on P runoff
from this calcareous soil.

Item Type: Article
NWISRL Publication Number: 1046
Subjects: Irrigation > Furrow irrigation > Runoff losses > Nutrients
Soil > Calcareous soil
Mass Import - autoclassified (may be erroneous)
Depositing User: Users 6 not found.
Date Deposited: 20 Nov 2010 21:50
Last Modified: 14 Nov 2016 17:23
Item ID: 124