Abstract
Abstract The yield and botanical composition of three forage mixtures were influenced by supplemental irrigation. Response to irrigation was related to the rooting habits of the species used. Under the best cutting management treatments, the average annual yield increases due to irrigation were about 1.2, 3.2, and 3.4 T per acre on the alfalfa‐orchardgrass, white clover‐bluegrass, and ladino‐orchardgrass mixtures, respectively. Maintaining soil moisture tension at or lower than 0.7 atm gave no increase in yield compared with 2 atm tension, except in the white clover‐bluegrass mixture where the increase was 0.3 to 0.6 T per acre. The effects of irrigation were similar under all cutting managements for the clover‐grass mixtures. The beneficial effect of irrigation on alfalfa‐orchardgrass decreased as cutting frequency increased. Irrigation increased yields of this mixture by about 1.2 T per acre when cut four times annually, but there was no increase when it was cut six times. The combination of supplemental irrigation and frequent cutting reduced the percentage of alfalfa in the stand. Clover was maintained in the grass stands by supplemental irrigation, but disappeared in unirrigated plots. Allowing grass to grow taller, or cutting to a higher stubble height, reduced the amount of clover in the irrigated orchardgrass and bluegrass stands.
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Claims 16
Claim · model-written summary
Irrigation influenced yield and botanical composition of three forage mixtures.
- Taxon
- Legume‐Grass Mixturest0
- Treatment
- supplemental irrigatione0
- Outcome
- yield and botanical compositione0
Not reportedDirection
Verbatim
e0“The yield and botanical composition of three forage mixtures were influenced by supplemental irrigation”
t0“Legume‐Grass Mixtures”
Claim · model-written summary
Irrigation response was related to species rooting habits.
Not reportedDirection
Verbatim
e0“Response to irrigation was related to the rooting habits of the species used”
t0“Legume‐Grass Mixtures”
Claim · model-written summary
Irrigation increased annual yield of alfalfa‐orchardgrass by about 1.2 T per acre under best cutting management.
- Taxon
- alfalfa‐orchardgrasse0
- Treatment
- irrigatione0
- Outcome
- average annual yielde0
- Direction
- increasese0
- Value
- 1.2e0
- Qualifier
- best cutting management treatmentse0
Not reportedComparator
Verbatim
e0“Under the best cutting management treatments, the average annual yield increases due to irrigation were about 1.2, 3.2, and 3.4 T per acre on the alfalfa‐orchardgrass, white clover‐bluegrass, and ladino‐orchardgrass mixtures, respectively”
Claim · model-written summary
Irrigation increased annual yield of white clover‐bluegrass by about 3.2 T per acre under best cutting management.
- Taxon
- white clover‐bluegrasse0
- Treatment
- irrigatione0
- Outcome
- average annual yielde0
- Direction
- increasese0
- Value
- 3.2e0
Not reportedComparator
Verbatim
e0“Under the best cutting management treatments, the average annual yield increases due to irrigation were about 1.2, 3.2, and 3.4 T per acre on the alfalfa‐orchardgrass, white clover‐bluegrass, and ladino‐orchardgrass mixtures, respectively”
Claim · model-written summary
Irrigation increased annual yield of ladino‐orchardgrass by about 3.4 T per acre under best cutting management.
- Taxon
- ladino‐orchardgrasse0
- Treatment
- irrigatione0
- Outcome
- average annual yielde0
- Direction
- increasese0
- Value
- 3.4 T per acree0
Not reportedComparator
Verbatim
e0“Under the best cutting management treatments, the average annual yield increases due to irrigation were about 1.2, 3.2, and 3.4 T per acre on the alfalfa‐orchardgrass, white clover‐bluegrass, and ladino‐orchardgrass mixtures, respectively”
Claim · model-written summary
Keeping soil moisture tension at or below 0.7 atm gave no yield increase over 2 atm for most mixtures.
Verbatim
e0“Maintaining soil moisture tension at or lower than 0.7 atm gave no increase in yield compared with 2 atm tension, except in the white clover‐bluegrass mixture”
t0“Legume‐Grass Mixtures”
Claim · model-written summary
At or below 0.7 atm, white clover‐bluegrass yield increased 0.3 to 0.6 T per acre over 2 atm.
Verbatim
e0“except in the white clover‐bluegrass mixture where the increase was 0.3 to 0.6 T per acre”
t0“Maintaining soil moisture tension at or lower than 0.7 atm gave no increase in yield compared with 2 atm tension”
Claim · model-written summary
Irrigation effects were similar across cutting managements for clover‐grass mixtures.
Verbatim
e0“The effects of irrigation were similar under all cutting managements for the clover‐grass mixtures”
Claim · model-written summary
Irrigation benefit in alfalfa‐orchardgrass fell as cutting frequency increased.
Verbatim
e0“The beneficial effect of irrigation on alfalfa‐orchardgrass decreased as cutting frequency increased”
Claim · model-written summary
With four annual cuts, irrigation raised alfalfa‐orchardgrass yield about 1.2 T per acre.
- Taxon
- alfalfa‐orchardgrasst0
- Treatment
- Irrigatione0
- Outcome
- yieldse0
- Direction
- increasede0
- Value
- 1.2 T per acree0
- Qualifier
- cut four times annuallye0
Not reportedComparator
Verbatim
e0“Irrigation increased yields of this mixture by about 1.2 T per acre when cut four times annually”
t0“effect of irrigation on alfalfa‐orchardgrass decreased”
Claim · model-written summary
With six annual cuts, irrigation did not increase alfalfa‐orchardgrass yield.
- Taxon
- alfalfa‐orchardgrasst1
- Treatment
- Irrigationt0
- Outcome
- yieldst0
- Direction
- no increasee0
- Qualifier
- cut six timese0
Not reportedComparator
Verbatim
e0“there was no increase when it was cut six times”
t0“Irrigation increased yields of this mixture by about 1.2 T per acre when cut four times annually, but there was no increase when it was cut six times”
t1“effect of irrigation on alfalfa‐orchardgrass decreased”
Claim · model-written summary
Irrigation with frequent cutting reduced the alfalfa share of the stand.
- Taxon
- alfalfa
Medicago sativae0 - Treatment
- supplemental irrigation and frequent cuttinge0
- Outcome
- percentage of alfalfa in the stande0
- Direction
- reducede0
Not reportedComparator
Organisms pictured · Representative pictures of the matched species, not figures from the paper.
Verbatim
e0“The combination of supplemental irrigation and frequent cutting reduced the percentage of alfalfa in the stand”
Claim · model-written summary
Supplemental irrigation maintained clover in grass stands.
- Treatment
- supplemental irrigatione0
- Outcome
- maintained in the grass standse0
- Comparator
- unirrigated plotse0
TrifoliumNot reportedDirection
Organisms pictured · Representative pictures of the matched species, not figures from the paper.
Verbatim
e0“Clover was maintained in the grass stands by supplemental irrigation, but disappeared in unirrigated plots”
Claim · model-written summary
Clover disappeared from unirrigated grass stands.
Organisms pictured · Representative pictures of the matched species, not figures from the paper.
Verbatim
e0“Clover was maintained in the grass stands by supplemental irrigation, but disappeared in unirrigated plots”
Claim · model-written summary
Allowing taller grass reduced clover in irrigated stands.
Not reportedComparator
Organisms pictured · Representative pictures of the matched species, not figures from the paper.
Verbatim
e0“Allowing grass to grow taller, or cutting to a higher stubble height, reduced the amount of clover in the irrigated orchardgrass and bluegrass stands”
Claim · model-written summary
Higher stubble cutting reduced clover in irrigated stands.
Not reportedComparator
Organisms pictured · Representative pictures of the matched species, not figures from the paper.
Verbatim
e0“Allowing grass to grow taller, or cutting to a higher stubble height, reduced the amount of clover in the irrigated orchardgrass and bluegrass stands”
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irrigation · organism · Medicago sativa (alfalfa)Positive and negative results
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11 papers more in this group
See all 15 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.