Colorado Water June 2005

• Year: 2005
• Title: Colorado Water
• Author: Water Center of Colorado State University
• Description: JUNE 2005 Issue
• Publications - Doc Type: Newsletter

and research/analysis
will following up on
this information.
8) Examination of avail-
able models, including
Hydrus ID 3.0 (with
Unsatchem), and con-
tinuing use of Visual
Minteq to help model
chemical changes with
the removal of pure
water through evapo-
transpiration.
Assistance in this research
came from five under-
graduates working in the
Irrigation Laboratory in
Plant Sciences Building on
the Colorado State Univer-
sity Campus. Additional
assistance was provided by
Dr. Tim Gates in Civil En-
gineering, Dr. Luis Garcia,
Eric Morway and others
involved directly with
the Arkansas River Valley
2
s
C.i
- # .,. Na Saturates! j
V Na Day 1
---- Na Day 2
0 Na Day 3
- Na Day 4
0 Irrigation Na
4 __._
0 500 1000 1500 2000 2500 3000 3500
Sodium (rrm r)
.S••_ � k3ULAU1111 UMMUniraiions m pore water extracts
5000 10
t 0 ca
4000 „ d V mg
F a N
0 Extract EC
..w.......,.
000 �
000 :x #
0
1000 A '7
s in •
2 4 6 'its 12 14 16
Extraction Count
Figure 4. Multiple extraction results
10
�a.«_...,_.. _......._.,,,_.. . W._ ._...._......_ ..., .
impacted assumptions of
chemical transport and
removal mechanisms.
4)
Spatial statistically analy-
sis of the chemical data
regionally and between
regions to determine
locations with greater
concentrations of salts,
being sodium, calcium,
magnesium, etc.
5)
Normal versus inverted
soil salinity profiles to
determine the effects of
waterlogging.
6)
Variability in the chemi-
cal constituent concentra-
tions as a function of EC
groupings.
7)
Chemical data is provid-
ing clues as to why cur-
rent EC -Crop guidance
manuals are not accurate
for these saline systems
and research/analysis
will following up on
this information.
8) Examination of avail-
able models, including
Hydrus ID 3.0 (with
Unsatchem), and con-
tinuing use of Visual
Minteq to help model
chemical changes with
the removal of pure
water through evapo-
transpiration.
Assistance in this research
came from five under-
graduates working in the
Irrigation Laboratory in
Plant Sciences Building on
the Colorado State Univer-
sity Campus. Additional
assistance was provided by
Dr. Tim Gates in Civil En-
gineering, Dr. Luis Garcia,
Eric Morway and others
involved directly with
the Arkansas River Valley
2
s
C.i
- # .,. Na Saturates! j
V Na Day 1
---- Na Day 2
0 Na Day 3
- Na Day 4
0 Irrigation Na
4 __._
0 500 1000 1500 2000 2500 3000 3500
Sodium (rrm r)
.S••_ � k3ULAU1111 UMMUniraiions m pore water extracts
5000 10
t 0 ca
4000 „ d V mg
F a N
0 Extract EC
..w.......,.
000 �
000 :x #
0
1000 A '7
s in •
2 4 6 'its 12 14 16
Extraction Count
Figure 4. Multiple extraction results
10
�a.«_...,_.. _......._.,,,_.. . W._ ._...._......_ ..., .