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Yield and vegetative growth as related to plant water potential of cotton irrigated with a moving sprinkler system at different frequencies and wetting depths
Year:
1992
Source of publication :
Irrigation Science
Authors :
בן-חור, מני
;
.
מאירי, אברהם
;
.
פלאוט, צבי
;
.
Volume :
13
Co-Authors:
Plaut, Z., Agricultural Research Organization, The Volcani Center, Bet Dagan, Israel
Ben-Hur, M., Agricultural Research Organization, The Volcani Center, Bet Dagan, Israel
Meiri, A., Agricultural Research Organization, The Volcani Center, Bet Dagan, Israel
Facilitators :
From page:
39
To page:
44
(
Total pages:
6
)
Abstract:
Seed-cotton yield, yield components and vegetative growth were determined under different irrigation frequencies and wetting depths with a self-propelled moving-irrigation-system (MSIS) in 1986 and 1987. Irrigation timing was determined in both years by pre-irrigation, mid-day plant water potential (ψw). The amount of water to be applied was determined by measuring the soil moisture deficit. In 1987, the effect of a change from one irrigation frequency and wetting depth to another at mid-flowering was also examined. Linear responses of relative seed-cotton yield to the amount of evapotranspiration (ET) were found for both years with similar slopes but different intercepts. Significant positive regressions were obtained between pre-irrigation plant ψw and relative seed-cotton yield, and vegetative growth during the linear growth stage. Seed-cotton yield was affected by both wetting depth and pre-irrigation plant ψw. The deeper the irrigation the higher was the seed-cotton yield for each pre-irrigation plant ψw. Irrigation frequencies which maintained plant ψw above -1.5 MPa during vegetative growth, flowering and boll-filling resulted in maximum production. The boll filling stage appeared to be a very sensitive one, as boll weight was found to be the main yield component responding to irrigation treatments. At a wetting depth of 120 cm, higher seed-cotton yields were obtained than at a more shallow wetting. Different irrigation managements resulted in different turgor potentials (ψt) mainly during mid-day. Both leaf water vapour conductance and net assimilation rate were sensitive to leaf ψw. © 1992 Springer-Verlag.
Note:
Related Files :
COTTON
Gossypium
irrigation
Moving sprinkler irrigation system (MSIS)
sprinkler irrigation
vegetative growth
עוד תגיות
תוכן קשור
More details
DOI :
10.1007/BF00190243
Article number:
Affiliations:
Database:
סקופוס
Publication Type:
מאמר
;
.
Language:
אנגלית
Editors' remarks:
ID:
27567
Last updated date:
02/03/2022 17:27
Creation date:
17/04/2018 00:32
Scientific Publication
Yield and vegetative growth as related to plant water potential of cotton irrigated with a moving sprinkler system at different frequencies and wetting depths
13
Plaut, Z., Agricultural Research Organization, The Volcani Center, Bet Dagan, Israel
Ben-Hur, M., Agricultural Research Organization, The Volcani Center, Bet Dagan, Israel
Meiri, A., Agricultural Research Organization, The Volcani Center, Bet Dagan, Israel
Yield and vegetative growth as related to plant water potential of cotton irrigated with a moving sprinkler system at different frequencies and wetting depths
Seed-cotton yield, yield components and vegetative growth were determined under different irrigation frequencies and wetting depths with a self-propelled moving-irrigation-system (MSIS) in 1986 and 1987. Irrigation timing was determined in both years by pre-irrigation, mid-day plant water potential (ψw). The amount of water to be applied was determined by measuring the soil moisture deficit. In 1987, the effect of a change from one irrigation frequency and wetting depth to another at mid-flowering was also examined. Linear responses of relative seed-cotton yield to the amount of evapotranspiration (ET) were found for both years with similar slopes but different intercepts. Significant positive regressions were obtained between pre-irrigation plant ψw and relative seed-cotton yield, and vegetative growth during the linear growth stage. Seed-cotton yield was affected by both wetting depth and pre-irrigation plant ψw. The deeper the irrigation the higher was the seed-cotton yield for each pre-irrigation plant ψw. Irrigation frequencies which maintained plant ψw above -1.5 MPa during vegetative growth, flowering and boll-filling resulted in maximum production. The boll filling stage appeared to be a very sensitive one, as boll weight was found to be the main yield component responding to irrigation treatments. At a wetting depth of 120 cm, higher seed-cotton yields were obtained than at a more shallow wetting. Different irrigation managements resulted in different turgor potentials (ψt) mainly during mid-day. Both leaf water vapour conductance and net assimilation rate were sensitive to leaf ψw. © 1992 Springer-Verlag.
Scientific Publication
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