Abstract
Abstract Consumptive use of water by alfalfa grown under two phosphorus fertility levels was measured in a 3‐year study at the University of Nebraska Scotts Bluff Station, located in western Nebraska. Soil moisture to a depth of 230 cm was measured with a neutron moisture meter at the start of the growing season, after each cutting, and after the last harvest. Irrigation water was delivered to the benches through an underground pipe and measured before flood irrigation. Alfalfa used 11.4 cm water per metric ton (4.95 in/T) of 88% dry matter hay. Alfalfa used water more efficiently in early May and June than July and August. Average water use per day was 4.1 mm (0.16 in) for the first harvest, 5.6 mm (0.22 in) for the second harvest, and 5.9 mm (0.23 in) for the third harvest. Average evapotranspiration ratios for the 3‐year period were 540 for the first cuttings, 630 for the second cuttings, and 860 for the third cuttings. The average evapotranspiration ratio for the three harvests over the 3‐year period was 680. Two levels of phosphorus applied to the soil did not alter water use nor total yields of hay.
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Claims 10
Claim · model-written summary
Alfalfa used 11.4 cm of water per metric ton of 88% dry matter hay.
- Taxon
- alfalfa
Medicago sativae0 - Outcome
- Consumptive use of watere0
- Value
- 11.4 cm water per metric tone1
- Setting
- western Nebraskae2
Organisms pictured · Representative pictures of the matched species, not figures from the paper.
Verbatim
e0“Consumptive use of water by alfalfa grown under two phosphorus fertility levels”
e2“Scotts Bluff Station, located in western Nebraska”
e1“Alfalfa used 11.4 cm water per metric ton (4.95 in/T) of 88% dry matter hay”
Claim · model-written summary
Alfalfa used water more efficiently in early May and June than in July and August.
- Taxon
- alfalfaMedicago sativae0
- Outcome
- used water more efficientlye2
- Direction
- more efficientlye2
- Comparator
- July and Auguste2
- Setting
- early May and Junee2
Organisms pictured · Representative pictures of the matched species, not figures from the paper.
Verbatim
e0“Consumptive use of water by alfalfa grown under two phosphorus fertility levels”
e2“Alfalfa used water more efficiently in early May and June than July and August”
Claim · model-written summary
Average water use per day of alfalfa was 4.1 mm for the first harvest.
- Taxon
- alfalfaMedicago sativae0
- Outcome
- Average water use per daye3
- Value
- 4.1 mm (0.16 in)e3
- Qualifier
- first harveste3
Organisms pictured · Representative pictures of the matched species, not figures from the paper.
Verbatim
e0“Consumptive use of water by alfalfa grown under two phosphorus fertility levels”
e3“Average water use per day was 4.1 mm (0.16 in) for the first harvest, 5.6 mm (0.22 in) for the second harvest, and 5.9 mm (0.23 in) for the third harvest”
Claim · model-written summary
Average water use per day of alfalfa was 5.6 mm for the second harvest.
- Taxon
- alfalfaMedicago sativae0
- Outcome
- Average water use per daye3
- Value
- 5.6 mm (0.22 in)e3
- Qualifier
- second harveste3
Organisms pictured · Representative pictures of the matched species, not figures from the paper.
Verbatim
e0“Consumptive use of water by alfalfa grown under two phosphorus fertility levels”
e3“Average water use per day was 4.1 mm (0.16 in) for the first harvest, 5.6 mm (0.22 in) for the second harvest, and 5.9 mm (0.23 in) for the third harvest”
Claim · model-written summary
Average water use per day of alfalfa was 5.9 mm for the third harvest.
- Taxon
- alfalfaMedicago sativae0
- Outcome
- Average water use per daye3
- Value
- 5.9 mm (0.23 in)e3
- Qualifier
- third harveste3
Organisms pictured · Representative pictures of the matched species, not figures from the paper.
Verbatim
e0“Consumptive use of water by alfalfa grown under two phosphorus fertility levels”
e3“Average water use per day was 4.1 mm (0.16 in) for the first harvest, 5.6 mm (0.22 in) for the second harvest, and 5.9 mm (0.23 in) for the third harvest”
Claim · model-written summary
The evapotranspiration ratio of alfalfa was 540 for the first cuttings.
- Taxon
- alfalfaMedicago sativae0
- Outcome
- Average evapotranspiration ratiose5
- Value
- 540e4
- Qualifier
- first cuttingse4
Organisms pictured · Representative pictures of the matched species, not figures from the paper.
Verbatim
e0“Consumptive use of water by alfalfa grown under two phosphorus fertility levels”
e4“were 540 for the first cuttings, 630 for the second cuttings, and 860 for the third cuttings”
e5“Average evapotranspiration ratios”
Claim · model-written summary
The evapotranspiration ratio of alfalfa was 630 for the second cuttings.
- Taxon
- alfalfaMedicago sativae0
- Outcome
- Average evapotranspiration ratiose5
- Value
- 630e4
- Qualifier
- second cuttingse4
Organisms pictured · Representative pictures of the matched species, not figures from the paper.
Verbatim
e0“Consumptive use of water by alfalfa grown under two phosphorus fertility levels”
e4“were 540 for the first cuttings, 630 for the second cuttings, and 860 for the third cuttings”
e5“Average evapotranspiration ratios”
Claim · model-written summary
The evapotranspiration ratio of alfalfa was 860 for the third cuttings.
- Taxon
- alfalfaMedicago sativae0
- Outcome
- Average evapotranspiration ratiose5
- Value
- 860e4
- Qualifier
- third cuttingse4
Organisms pictured · Representative pictures of the matched species, not figures from the paper.
Verbatim
e0“Consumptive use of water by alfalfa grown under two phosphorus fertility levels”
e4“were 540 for the first cuttings, 630 for the second cuttings, and 860 for the third cuttings”
e5“Average evapotranspiration ratios”
Claim · model-written summary
The average evapotranspiration ratio of alfalfa over the three harvests was 680.
- Taxon
- alfalfaMedicago sativae0
- Outcome
- average evapotranspiration ratioe6
- Value
- 680e6
- Qualifier
- for the three harvestse6
Organisms pictured · Representative pictures of the matched species, not figures from the paper.
Verbatim
e0“Consumptive use of water by alfalfa grown under two phosphorus fertility levels”
e6“The average evapotranspiration ratio for the three harvests over the 3-year period was 680”
Claim · model-written summary
Two levels of phosphorus did not change alfalfa water use or total hay yield.
- Taxon
- alfalfaMedicago sativae0
- Treatment
- Two levels of phosphorus applied to the soile7
- Outcome
- water use nor total yields of haye7
- Direction
- no_changeinferrede7
Not reportedComparator
Organisms pictured · Representative pictures of the matched species, not figures from the paper.
Verbatim
e0“Consumptive use of water by alfalfa grown under two phosphorus fertility levels”
e7“Two levels of phosphorus applied to the soil did not alter water use nor total yields of hay”
The same questions in other papers
phosphorus · physiology: water · Medicago sativa (alfalfa)Positive and negative results
2 in the opposite direction
- positive
- positive
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.