scholarly journals Reductions in root hydraulic conductivity in response to clay soil and treated waste water are related to PIPs down-regulation in Citrus

2017 ◽  
Vol 7 (1) ◽  
Author(s):  
Indira Paudel ◽  
Shabtai Cohen ◽  
Lyudmila Shlizerman ◽  
Amit K. Jaiswal ◽  
Avi Shaviv ◽  
...  
Keyword(s):  
Waste Water ◽  
Hydraulic Conductivity ◽  
Clay Soil ◽  
Down Regulation ◽  
Root Hydraulic Conductivity

scholarly journals The Singular Molecular Conformation of Humic Acids in Solution Influences Their Ability to Enhance Root Hydraulic Conductivity and Plant Growth

Molecules ◽  
2020 ◽  
Vol 26 (1) ◽  
pp. 3
Author(s):  
Maite Olaetxea ◽  
Veronica Mora ◽  
Roberto Baigorri ◽  
Angel M. Zamarreño ◽  
Jose M. García-Mina
Keyword(s):  
Polyethylene Glycol ◽  
Humic Acid ◽  
Hydraulic Conductivity ◽  
Plant Growth ◽  
Polyacrylic Acid ◽  
Molecular Conformation ◽  
Water Solution ◽  
Biological Effects ◽  
Root Hydraulic Conductivity ◽  
Molecular Systems

Some studies have reported that the capacity of humic substances to improve plant growth is dependent on their ability to increase root hydraulic conductivity. It was proposed that this effect is directly related to the structural conformation in solution of these substances. To study this hypothesis, the effects on root hydraulic conductivity and growth of cucumber plants of a sedimentary humic acid and two polymers—polyacrylic acid and polyethylene glycol—presenting a molecular conformation in water solution different from that of the humic acid have been studied. The results show that whereas the humic acid caused an increase in root hydraulic conductivity and plant growth, both the polyacrylic acid and the polyethylene glycol did not modify plant growth and caused a decrease in root hydraulic conductivity. These results can be explained by the different molecular conformation in water solution of the three molecular systems. The relationships between these biological effects and the molecular conformation of the three molecular systems in water solution are discussed.

Root hydraulic conductivity of vesicular-arbuscular mycorrhizal green ash seedlings

1988 ◽  
Vol 109 (4) ◽  
pp. 465-471 ◽  
Author(s):  
C. P. ANDERSEN ◽  
A. H. MARKHART ◽  
R. K. DIXON ◽  
E. I. SUCOFF
Keyword(s):  
Hydraulic Conductivity ◽  
Arbuscular Mycorrhizal ◽  
Green Ash ◽  
Root Hydraulic Conductivity ◽  
Vesicular Arbuscular

MEASURING HYDRAULIC CONDUCTIVITY IN A CRACKING CLAY SOIL USING THE GUELPH PERMEAMETER

1999 ◽  
Vol 42 (4) ◽  
pp. 957-964 ◽  
Author(s):  
V. Bagarello ◽  
M. Iovino ◽  
W. D. Reynolds
Keyword(s):  
Hydraulic Conductivity ◽  
Clay Soil ◽  
Guelph Permeameter

COMPACTION EFFECTS ON THE HYDRAULIC CONDUCTIVITY OF A CLAY SOIL

Soil Science ◽  
1978 ◽  
Vol 125 (5) ◽  
pp. 278-282 ◽  
Author(s):  
ESTHER DOUGLAS ◽  
EDWARD McKYES
Keyword(s):  
Hydraulic Conductivity ◽  
Clay Soil

Physical changes in seedbed material resulting from the application of dissolved gypsum

Soil Research ◽  
1966 ◽  
Vol 4 (1) ◽  
pp. 69 ◽  
Author(s):  
DR Scotter ◽  
J Loveday
Keyword(s):  
Hydraulic Conductivity ◽  
Water Retention ◽  
Clay Soil ◽  
Physical Changes

The effect of an initial irrigation of gypsum solution, as compared with water, on water retention and transmission in a seedbed loam and clay and the subsequent changes in porosity during drying have been studied. A marked increase in hydraulic conductivity, particularly in the clay soil, and concomitant increases in total and air-filled porosity at all matric potentials, from near saturation to oven dry, were measured. The data provide an explanation of the earlier observation that improved emergence resulting from gypsum treatment was associated with the maintenance of higher matric potentials in the surface 4 in. of soil for longer periods after irrigation.

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