Abstract
Abstract The development of low‐water‐input forages would be useful for improving the water‐use efficiency of livestock production in semi‐arid and arid regions. The desiccation‐tolerant ( DT ) species S porobolus stapfianus G andoger and two desiccation‐sensitive ( DS ) species, S porobolus pyramidalis and S porobolus fimbriatus (Trin.) N ees. ( P oaceae), were evaluated for aerial biomass production and seed productivity under three different irrigation regimes. S porobolus stapfianus displayed the least biomass production, whereas S . pyramidalis and S . fimbriatus produced up to 3.8‐ and 11.2‐fold greater dry biomass, respectively, at the highest irrigation rate of 12 334 l (0.01 acre‐feet). S porobolus fimbriatus and to a lesser extent S . pyramidalis showed significant increases in biomass production in response to increased irrigation rates, whereas S . stapfianus did not. S porobolus pyramidalis and S . fimbriatus exhibited 3.2‐ and 6.0‐fold greater seed production, respectively, in response to increased irrigation rates, whereas S . stapfianus showed only a 1.4‐fold increase. All S porobolus species possessed forage quality traits (e.g. crude protein, fibre content) comparable to those of timothy, a forage grass grown widely in the G reat B asin in the western U nited S tates. Micronutrient content exceeded the minimum requirements of beef cattle, without surpassing tolerable limits, with the exception of zinc, which appeared low in all three S porobolus species. The low water requirements displayed by these species, combined with their acceptable forage qualities, indicate that these grasses have the potential to serve farmers and ranchers in semi‐arid and arid regions of the western U nited S tates where irrigation resources are limited.
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Claims 11
Claim · model-written summary
S. pyramidalis produced 3.8-fold more dry biomass than S. stapfianus at the highest irrigation rate.
- Taxon
- S . pyramidalis
Sporobolus indicus var. pyramidalise0 - Treatment
- highest irrigation rate of 12 334 l (0.01 acre‐feet)e0
- Outcome
- dry biomasse0
- Direction
- greatere0
- Value
- 3.8‐e0
Organisms pictured · Representative pictures of the matched species, not figures from the paper.
Verbatim
e0“S . pyramidalis and S . fimbriatus produced up to 3.8‐ and 11.2‐fold greater dry biomass, respectively, at the highest irrigation rate of 12 334 l (0.01 acre‐feet)”
Claim · model-written summary
S. fimbriatus produced 11.2-fold more dry biomass than S. stapfianus at the highest irrigation rate.
Verbatim
e0“S . pyramidalis and S . fimbriatus produced up to 3.8‐ and 11.2‐fold greater dry biomass, respectively, at the highest irrigation rate of 12 334 l (0.01 acre‐feet)”
Claim · model-written summary
S. fimbriatus biomass increased significantly with irrigation.
Verbatim
e0“S porobolus fimbriatus and to a lesser extent S . pyramidalis showed significant increases in biomass production in response to increased irrigation rates”
Claim · model-written summary
S. pyramidalis biomass increased with irrigation to a lesser extent.
- Taxon
- S . pyramidalisSporobolus indicus var. pyramidalise0
- Treatment
- increased irrigation ratese0
- Outcome
- biomass productione0
- Direction
- increasese0
Organisms pictured · Representative pictures of the matched species, not figures from the paper.
Verbatim
e0“S porobolus fimbriatus and to a lesser extent S . pyramidalis showed significant increases in biomass production in response to increased irrigation rates”
Claim · model-written summary
S. stapfianus biomass did not increase with irrigation.
- Taxon
- S . stapfianusSporobolus stapfianuse0
Not reportedTreatmentOutcomeDirection
Verbatim
e0“whereas S . stapfianus did not”
Claim · model-written summary
S. pyramidalis seed production increased 3.2-fold with irrigation.
Verbatim
e0“S porobolus pyramidalis and S . fimbriatus exhibited 3.2‐ and 6.0‐fold greater seed production, respectively, in response to increased irrigation rates”
Claim · model-written summary
S. fimbriatus seed production increased 6.0-fold with irrigation.
Verbatim
e0“S porobolus pyramidalis and S . fimbriatus exhibited 3.2‐ and 6.0‐fold greater seed production, respectively, in response to increased irrigation rates”
Claim · model-written summary
S. stapfianus seed production increased only 1.4-fold.
- Taxon
- S . stapfianusSporobolus stapfianuse0
- Direction
- increasee0
- Value
- 1.4‐e0
Not reportedOutcome
Verbatim
e0“S . stapfianus showed only a 1.4‐fold increase”
Claim · model-written summary
Sporobolus forage quality was comparable to timothy.
Verbatim
e0“All S porobolus species possessed forage quality traits (e.g. crude protein, fibre content) comparable to those of timothy”
Claim · model-written summary
Micronutrients met beef cattle minimums except zinc.
Verbatim
e0“Micronutrient content exceeded the minimum requirements of beef cattle, without surpassing tolerable limits, with the exception of zinc, which appeared low in all three S porobolus species”
Claim · model-written summary
Zinc was low in all three species.
Verbatim
e0“zinc, which appeared low in all three S porobolus species”