Abstract
Furrow erosion and low water intake rate are serious problems in the silty clay soils of the Quibor valley in Venezuela. The problem may be aggravated additionally in the future with the import of low-electrolyte water (EC = 0.3 dS m−1) to the valley. The objective of this study was to determine the effect of electrolyte concentration in irrigation water during furrow irrigation on furrow erosion, on the properties of depositional crust formed in the furrow as the water infiltrates, and on the intake rate. The experiment took place in 36 m2 plots in the field,. Electrolyte concentration was controlled by spreading phosphogypsum at the rates of 0, 2, 4, and 6 Mg ha−1 on the soil. Gypsum increased the electrolyte concentration of the irrigation water and had an insignificant effect on sediment concentration in the furrows and on the mechanical strength of the crust, but it increased the rate of water infiltration into the furrows and onion yields. Flocculation of the sediments and the formation of a depositional crust made of flocculated clays are responsible for the higher intake rate of irrigation water in the gypsum-treated plots' furrows. Improved infiltration and drainage rate increased onion yields.
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Claims 6
Claim · model-written summary
Gypsum increased the electrolyte concentration of the irrigation water.
- Taxon
- onion
Allium cepae4 - Treatment
- Gypsume1
- Outcome
- electrolyte concentration of the irrigation watere1
- Direction
- increasede1
Not reportedComparator
Organisms pictured · Representative pictures of the matched species, not figures from the paper.
Verbatim
e1“Gypsum increased the electrolyte concentration of the irrigation water”
e4“it increased the rate of water infiltration into the furrows and onion yields”
Claim · model-written summary
Gypsum had an insignificant effect on sediment concentration in the furrows.
- Taxon
- onionAllium cepae4
- Treatment
- Gypsume1
- Outcome
- sediment concentration in the furrowse2
- Direction
- insignificant effecte2
Not reportedComparator
Organisms pictured · Representative pictures of the matched species, not figures from the paper.
Verbatim
e1“Gypsum increased the electrolyte concentration of the irrigation water”
e2“had an insignificant effect on sediment concentration in the furrows”
e4“it increased the rate of water infiltration into the furrows and onion yields”
Claim · model-written summary
Gypsum had an insignificant effect on the mechanical strength of the crust.
- Taxon
- onionAllium cepae4
- Treatment
- Gypsume1
- Outcome
- mechanical strength of the cruste3
- Direction
- insignificant effecte3
Not reportedComparator
Organisms pictured · Representative pictures of the matched species, not figures from the paper.
Verbatim
e1“Gypsum increased the electrolyte concentration of the irrigation water”
e3“had an insignificant effect on sediment concentration in the furrows and on the mechanical strength of the crust”
e4“it increased the rate of water infiltration into the furrows and onion yields”
Claim · model-written summary
Gypsum increased the rate of water infiltration into the furrows.
- Taxon
- onionAllium cepae4
- Treatment
- Gypsume1
- Outcome
- rate of water infiltration into the furrowse4
- Direction
- increasede4
Not reportedComparator
Organisms pictured · Representative pictures of the matched species, not figures from the paper.
Verbatim
e1“Gypsum increased the electrolyte concentration of the irrigation water”
e4“it increased the rate of water infiltration into the furrows and onion yields”
Claim · model-written summary
Gypsum increased onion yields.
- Taxon
- onionAllium cepae4
- Treatment
- Gypsume1
- Outcome
- onion yieldse4
- Direction
- increasede4
Not reportedComparator
Organisms pictured · Representative pictures of the matched species, not figures from the paper.
Verbatim
e1“Gypsum increased the electrolyte concentration of the irrigation water”
e4“it increased the rate of water infiltration into the furrows and onion yields”
Claim · model-written summary
Flocculated sediment and a depositional crust are responsible for the higher intake rate of irrigation water in gypsum-treated furrows.
- Taxon
- onionAllium cepae4
- Outcome
- intake rate of irrigation watere5
- Qualifier
- Flocculation of the sediments and the formation of a depositional crust made of flocculated clayse5
Organisms pictured · Representative pictures of the matched species, not figures from the paper.
Verbatim
e4“it increased the rate of water infiltration into the furrows and onion yields”
e5“Flocculation of the sediments and the formation of a depositional crust made of flocculated clays are responsible for the higher intake rate of irrigation water in the gypsum-treated plots”
The same questions in other papers
lime · yield · Allium cepa (onion)Positive and negative results
12 papers in the same direction as this paper · 1 reporting no difference from an alternative
- no effect
- positive
- positive
10 papers more in this group
See all 14 papers →Claims are grouped by organism, treatment and what was measured or targeted. A paper counts as positive when any of its claims in the group is positive.