Abstract
Abstract Alfalfa ( Medicago sativa L. cv. ‘Sonora’) was grown in greenhouse lysimeters with soil depths of 60, 120, and 180 cm to determine whether rooting depth affected tolerance to the low leaching percentage of 6.25. Salinities of the drainage waters averaged about 6 mmho/cm for the controls irrigated with 0.4 mmho/cm water, and 26 mmho/cm for lysimeters irrigated with 2.0 mmho/cm water. Steady‐state salinity profiles were maintained for 3 years. Yields with the more saline water averaged 23% less than those of the controls, in good agreement with previous findings, but were not significantly affected by lysimeter depth. Water requirements and uptake of chloride and sodium were only slightly affected by lysimeter depth. Salinity profiles with maximum salinities of 26 mmho/cm in the soil water can, therefore, be compressed into as little as a 60‐cm depth with no greater effects on yield or salt uptake by the crop than those obtained with salinity profiles extended over 120 or 180 cm.
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Claims 4
Claim · model-written summary
More saline irrigation water reduced alfalfa yield by 23% relative to controls.
- Taxon
- Alfalfa
Medicago sativae1 - Material
- Medicago sativa L. cv. ‘Sonora’e1
- Treatment
- more saline watere0
- Outcome
- Yieldse0
- Direction
- lesse0
- Value
- 23%e0
- Comparator
- controlse0
Organisms pictured · Representative pictures of the matched species, not figures from the paper.
Verbatim
e0“Yields with the more saline water averaged 23% less than those of the controls”
e1“Alfalfa ( Medicago sativa L. cv. ‘Sonora’)”
Claim · model-written summary
Alfalfa yield was not significantly affected by lysimeter depth.
- Taxon
- AlfalfaMedicago sativae2
- Treatment
- lysimeter depthe0
- Outcome
- Yieldse1
Not reportedComparatorDirection
Organisms pictured · Representative pictures of the matched species, not figures from the paper.
Verbatim
e0“but were not significantly affected by lysimeter depth.”
e1“Yields with the more saline water”
e2“Alfalfa ( Medicago sativa L. cv. ‘Sonora’)”
Claim · model-written summary
Lysimeter depth only slightly affected water requirements and chloride and sodium uptake.
- Taxon
- AlfalfaMedicago sativae1
- Treatment
- lysimeter depthe0
- Outcome
- Water requirements and uptake of chloride and sodiume0
Not reportedComparatorDirection
Organisms pictured · Representative pictures of the matched species, not figures from the paper.
Verbatim
e0“Water requirements and uptake of chloride and sodium were only slightly affected by lysimeter depth.”
e1“Alfalfa ( Medicago sativa L. cv. ‘Sonora’)”
Claim · model-written summary
The authors infer that a 60-cm salinity profile has no greater effect on yield or salt uptake than 120 or 180 cm profiles.
- Taxon
- AlfalfaMedicago sativae1
- Treatment
- 60‐cm depthe0
- Outcome
- yield or salt uptake by the crope0
- Direction
- no greater effectse0
- Value
- 26 mmho/cme0
- Comparator
- 120 or 180 cme0
Organisms pictured · Representative pictures of the matched species, not figures from the paper.
Verbatim
e0“Salinity profiles with maximum salinities of 26 mmho/cm in the soil water can, therefore, be compressed into as little as a 60‐cm depth with no greater effects on yield or salt uptake by the crop than those obtained with salinity profiles extended over 120 or 180 cm.”
e1“Alfalfa ( Medicago sativa L. cv. ‘Sonora’)”
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salinity · yield · Medicago sativa (alfalfa)Positive and negative results
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