Abstract
Abstract In the Southern High Plains, grain sorghum [ Sorghum bicolor (L.) Moench] is grown under various irrigation regimes from full irrigation to dryland. Continued water depletion from the Ogallala Aquifer and increasing expense of pumping water have resulted in a need for developing more water‐efficient irrigated crop production systems for this area. An experiment was conducted to determine the response of grain sorghum to limited irrigation and fallow management. Winter wheat ( Triticum aestivum L.) residue was managed during fallow by either no‐tillage or disk‐tillage practices. The sorghum was grown dryland or received one well‐timed growing‐season irrigation. Precipitation stored as soil water during an 11‐month fallow period was significantly higher with no‐tillage than with disk‐tillage where 1.1 kg residue m‐2 was present, but not where only 0.2 kg m‐2 was present. Dryland no‐tillage yields were greater than disk‐tillage due to greater stored water at planting. A significant irrigation × tillage interaction was found for grain yield and water use efficiency only when water stress was severe at the time of irrigation. The combination of no‐tillage during fallow after wheat and a single, well‐timed irrigation for a succeeding sorghum crop was found to be a suitable transition system from an irrigation‐on‐demand to a dryland production system.
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Claims 5
Claim · model-written summary
No-tillage during fallow stored more soil water than disk-tillage where 1.1 kg residue m‐2 was present.
- Taxon
- Grain Sorghum
Sorghum bicolort0 - Treatment
- no‐tillagee1
- Outcome
- Precipitation stored as soil watere1
- Direction
- highere1
- Qualifier
- where 1.1 kg residue m‐2 was presente1
- Comparator
- disk‐tillagee1
Organisms pictured · Representative pictures of the matched species, not figures from the paper.
Verbatim
t0“Grain Sorghum Response to Tillage Method”
e1“Precipitation stored as soil water during an 11‐month fallow period was significantly higher with no‐tillage than with disk‐tillage where 1.1 kg residue m‐2 was present, but not where only 0.2 kg m‐2 was present”
Claim · model-written summary
Where only 0.2 kg m‐2 residue was present, no-tillage did not significantly change stored soil water relative to disk-tillage.
- Taxon
- Grain SorghumSorghum bicolort0
- Treatment
- no‐tillagee1
- Outcome
- Precipitation stored as soil watere1
- Direction
- no_changeinferrede1
- Qualifier
- where only 0.2 kg m‐2 was presente1
- Comparator
- disk‐tillagee1
Organisms pictured · Representative pictures of the matched species, not figures from the paper.
Verbatim
t0“Grain Sorghum Response to Tillage Method”
e1“Precipitation stored as soil water during an 11‐month fallow period was significantly higher with no‐tillage than with disk‐tillage where 1.1 kg residue m‐2 was present, but not where only 0.2 kg m‐2 was present”
Claim · model-written summary
Dryland no-tillage sorghum yielded more than disk-tillage because of greater stored water at planting.
- Taxon
- Grain SorghumSorghum bicolort0
- Treatment
- no‐tillagee2
- Outcome
- yieldse2
- Direction
- greatere2
- Qualifier
- due to greater stored water at plantinge2
- Comparator
- disk‐tillagee2
Organisms pictured · Representative pictures of the matched species, not figures from the paper.
Verbatim
t0“Grain Sorghum Response to Tillage Method”
e2“Dryland no‐tillage yields were greater than disk‐tillage due to greater stored water at planting”
Claim · model-written summary
A significant irrigation × tillage interaction affected grain yield and water use efficiency only under severe water stress at the time of irrigation.
- Taxon
- Grain SorghumSorghum bicolort0
- Treatment
- irrigation × tillage interactione3
- Outcome
- grain yield and water use efficiencye3
- Qualifier
- only when water stress was severe at the time of irrigatione3
Not reportedDirection
Organisms pictured · Representative pictures of the matched species, not figures from the paper.
Verbatim
t0“Grain Sorghum Response to Tillage Method”
e3“A significant irrigation × tillage interaction was found for grain yield and water use efficiency only when water stress was severe at the time of irrigation”
Claim · model-written summary
No-tillage during fallow after wheat combined with a single well-timed irrigation is a suitable transition system from irrigation-on-demand to dryland sorghum production.
- Taxon
- Grain SorghumSorghum bicolort0
- Treatment
- no‐tillage during fallow after wheat and a single, well‐timed irrigatione4
- Outcome
- suitable transition systeme4
Organisms pictured · Representative pictures of the matched species, not figures from the paper.
Verbatim
t0“Grain Sorghum Response to Tillage Method”
e4“The combination of no‐tillage during fallow after wheat and a single, well‐timed irrigation for a succeeding sorghum crop was found to be a suitable transition system from an irrigation‐on‐demand to a dryland production system”
The same questions in other papers
tillage · soil: physics · Sorghum bicolor (sorghum)Positive and negative results
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- no effect
- no effect
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See all 10 papers →tillage · yield · Sorghum bicolor (sorghum)Positive and negative results
28 papers in the same direction as this paper · 16 in the opposite direction · 3 reporting no difference from an alternative
- positive
- positive
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See all 48 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.