Estimating soil moisture under low frequency surface irrigation using crop water stress index

Paul D. Colaizzi, Edward M. Barnes, Thomas R. Clarke, Christopher Y. Choi, Peter M Waller

Research output: Contribution to journalArticle

56 Citations (Scopus)

Abstract

The present study investigated the relationship between the crop water stress index (CWSI) and soil moisture for surface irrigated cotton (Gossypium hirsutum, Delta Pine 90b) at Maricopa, Arizona during the 1998 season. The CWSI was linked to soil moisture through the water stress coefficient Ks that accounts for reduced crop evapotranspiration when there is a shortage of soil water. A stress recovery coefficient Krec was introduced to account for reduced crop evapotranspiration as the crop recovered from water stress after irrigation events. A soil water stress index (SWSI) was derived in terms of Ks and Krec. The SWSI compared reasonably well to the CWSI, but atmospheric stability correction for the CWSI did not improve comparisons. When the CWSI was substituted into the SWSI formulation, it gave good prediction of soil moisture depletion (fDEP; when to irrigate) and depth of root zone depletion (Dr; how much to irrigate). Disagreement was greatest for fDEP<0.6 because cotton is less sensitive to water stress in this range.

Original languageEnglish (US)
Pages (from-to)27-35
Number of pages9
JournalJournal of Irrigation and Drainage Engineering
Volume129
Issue number1
DOIs
StatePublished - Jan 2003

Fingerprint

surface irrigation
Soil moisture
Dehydration
water stress
Irrigation
Crops
Soil
soil moisture
soil water
irrigation
crop
crops
Water
Soils
Evapotranspiration
evapotranspiration
cotton
Cotton
index
Gossypium

Keywords

  • Soil moisture
  • Surface irrigation

ASJC Scopus subject areas

  • Agricultural and Biological Sciences (miscellaneous)
  • Water Science and Technology
  • Civil and Structural Engineering

Cite this

Estimating soil moisture under low frequency surface irrigation using crop water stress index. / Colaizzi, Paul D.; Barnes, Edward M.; Clarke, Thomas R.; Choi, Christopher Y.; Waller, Peter M.

In: Journal of Irrigation and Drainage Engineering, Vol. 129, No. 1, 01.2003, p. 27-35.

Research output: Contribution to journalArticle

Colaizzi, Paul D. ; Barnes, Edward M. ; Clarke, Thomas R. ; Choi, Christopher Y. ; Waller, Peter M. / Estimating soil moisture under low frequency surface irrigation using crop water stress index. In: Journal of Irrigation and Drainage Engineering. 2003 ; Vol. 129, No. 1. pp. 27-35.
@article{1660519613ac4de09edaaddae4099ee6,
title = "Estimating soil moisture under low frequency surface irrigation using crop water stress index",
abstract = "The present study investigated the relationship between the crop water stress index (CWSI) and soil moisture for surface irrigated cotton (Gossypium hirsutum, Delta Pine 90b) at Maricopa, Arizona during the 1998 season. The CWSI was linked to soil moisture through the water stress coefficient Ks that accounts for reduced crop evapotranspiration when there is a shortage of soil water. A stress recovery coefficient Krec was introduced to account for reduced crop evapotranspiration as the crop recovered from water stress after irrigation events. A soil water stress index (SWSI) was derived in terms of Ks and Krec. The SWSI compared reasonably well to the CWSI, but atmospheric stability correction for the CWSI did not improve comparisons. When the CWSI was substituted into the SWSI formulation, it gave good prediction of soil moisture depletion (fDEP; when to irrigate) and depth of root zone depletion (Dr; how much to irrigate). Disagreement was greatest for fDEP<0.6 because cotton is less sensitive to water stress in this range.",
keywords = "Soil moisture, Surface irrigation",
author = "Colaizzi, {Paul D.} and Barnes, {Edward M.} and Clarke, {Thomas R.} and Choi, {Christopher Y.} and Waller, {Peter M}",
year = "2003",
month = "1",
doi = "10.1061/(ASCE)0733-9437(2003)129:1(27)",
language = "English (US)",
volume = "129",
pages = "27--35",
journal = "Journal of Irrigation and Drainage Engineering - ASCE",
issn = "0733-9437",
publisher = "American Society of Civil Engineers (ASCE)",
number = "1",

}

TY - JOUR

T1 - Estimating soil moisture under low frequency surface irrigation using crop water stress index

AU - Colaizzi, Paul D.

AU - Barnes, Edward M.

AU - Clarke, Thomas R.

AU - Choi, Christopher Y.

AU - Waller, Peter M

PY - 2003/1

Y1 - 2003/1

N2 - The present study investigated the relationship between the crop water stress index (CWSI) and soil moisture for surface irrigated cotton (Gossypium hirsutum, Delta Pine 90b) at Maricopa, Arizona during the 1998 season. The CWSI was linked to soil moisture through the water stress coefficient Ks that accounts for reduced crop evapotranspiration when there is a shortage of soil water. A stress recovery coefficient Krec was introduced to account for reduced crop evapotranspiration as the crop recovered from water stress after irrigation events. A soil water stress index (SWSI) was derived in terms of Ks and Krec. The SWSI compared reasonably well to the CWSI, but atmospheric stability correction for the CWSI did not improve comparisons. When the CWSI was substituted into the SWSI formulation, it gave good prediction of soil moisture depletion (fDEP; when to irrigate) and depth of root zone depletion (Dr; how much to irrigate). Disagreement was greatest for fDEP<0.6 because cotton is less sensitive to water stress in this range.

AB - The present study investigated the relationship between the crop water stress index (CWSI) and soil moisture for surface irrigated cotton (Gossypium hirsutum, Delta Pine 90b) at Maricopa, Arizona during the 1998 season. The CWSI was linked to soil moisture through the water stress coefficient Ks that accounts for reduced crop evapotranspiration when there is a shortage of soil water. A stress recovery coefficient Krec was introduced to account for reduced crop evapotranspiration as the crop recovered from water stress after irrigation events. A soil water stress index (SWSI) was derived in terms of Ks and Krec. The SWSI compared reasonably well to the CWSI, but atmospheric stability correction for the CWSI did not improve comparisons. When the CWSI was substituted into the SWSI formulation, it gave good prediction of soil moisture depletion (fDEP; when to irrigate) and depth of root zone depletion (Dr; how much to irrigate). Disagreement was greatest for fDEP<0.6 because cotton is less sensitive to water stress in this range.

KW - Soil moisture

KW - Surface irrigation

UR - http://www.scopus.com/inward/record.url?scp=0036462201&partnerID=8YFLogxK

UR - http://www.scopus.com/inward/citedby.url?scp=0036462201&partnerID=8YFLogxK

U2 - 10.1061/(ASCE)0733-9437(2003)129:1(27)

DO - 10.1061/(ASCE)0733-9437(2003)129:1(27)

M3 - Article

AN - SCOPUS:0036462201

VL - 129

SP - 27

EP - 35

JO - Journal of Irrigation and Drainage Engineering - ASCE

JF - Journal of Irrigation and Drainage Engineering - ASCE

SN - 0733-9437

IS - 1

ER -