Abstract
Objective: To carry out an agronomical assessment and a quantitative description of the yield components of switchgrass (Panicum virgatum), eastern gamagrass (Tripsacum dactyloides), and alkali sacaton (Sporobolus airoides) under rainfed conditions in Tulancingo, Hidalgo, Mexico. Design/Methodology/Approach: A completely randomized block design was used in 31-month-old pastures to determine forage production, morphological composition, seed yield, and weight of 1,000 caryopses. The plants were characterized in 7-month-old pastures, recording (per plant) the number of total and floral stems, as well as the basal twigs in alkali sacaton and switchgrass. Meanwhile, in the case of eastern gamagrass, the dome number and androecium sections were recorded. Results: The highest forage dry matter production was observed in switchgrass: 9,322 kg ha-1 (P < 0.05). Eastern gamagrass had a higher leaf ratio (1:3). The highest number of seeds was recorded in alkali sacaton: 211 kg ha-1, with 43% physical purity. After 7 months of sowing, a total of 250, 355, and 280 stems and 193, 150, and 87 floral stems were recorded in switchgrass, alkali sacaton, and eastern gamagrass, respectively. Study Limitations/Implications: Eastern gamagrass produces a low number of seeds; therefore, it must be propagated by plant material. In rainfed soils, grasses help to recover pasture areas, since rainfed agriculture poses a risk in many places as a result of poor rainfall distribution or early frosts. Findings/Conclusions: The three grasses studied are productive due to the amount of forage accumulated. Alkali sacaton produces more seeds.
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Claims 11
Claim · model-written summary
Switchgrass had the highest forage dry matter production at 9,322 kg ha-1.
- Taxon
- switchgrass
Panicum virgatume0 - Outcome
- forage dry matter productione0
- Direction
- higheste0
- Value
- 9,322 kg ha-1e0
Not reportedSetting
Organisms pictured · Representative pictures of the matched species, not figures from the paper.
Verbatim
e0“The highest forage dry matter production was observed in switchgrass: 9,322 kg ha-1 (P < 0.05).”
Claim · model-written summary
Eastern gamagrass had a higher leaf ratio of 1:3.
- Taxon
- Eastern gamagrass
Tripsacum dactyloidese0 - Outcome
- leaf ratioe0
- Direction
- highere0
- Value
- 1:3e0
Organisms pictured · Representative pictures of the matched species, not figures from the paper.
Verbatim
e0“Eastern gamagrass had a higher leaf ratio (1:3).”
Claim · model-written summary
Alkali sacaton had the highest seed yield, 211 kg ha-1.
- Taxon
- alkali sacaton
.jpg?width=60)
Sporobolus airoidese0 - Outcome
- number of seedse0
- Direction
- higheste0
- Value
- 211 kg ha-1e0
Organisms pictured · Representative pictures of the matched species, not figures from the paper.
.jpg?width=500)
Verbatim
e0“The highest number of seeds was recorded in alkali sacaton: 211 kg ha-1, with 43% physical purity.”
Claim · model-written summary
Alkali sacaton seed had 43% physical purity.
- Taxon
- alkali sacatonSporobolus airoidese0
- Outcome
- physical puritye0
- Value
- 43%e0
Not reportedDirection
Organisms pictured · Representative pictures of the matched species, not figures from the paper.
Verbatim
e0“The highest number of seeds was recorded in alkali sacaton: 211 kg ha-1, with 43% physical purity.”
Claim · model-written summary
switchgrass had 250 stems after seven months.
- Taxon
- switchgrassPanicum virgatume0
- Outcome
- stemse0
- Value
- 250e0
- Qualifier
- After 7 months of sowinge0
Not reportedDirection
Organisms pictured · Representative pictures of the matched species, not figures from the paper.
Verbatim
e0“After 7 months of sowing, a total of 250, 355, and 280 stems and 193, 150, and 87 floral stems were recorded in switchgrass, alkali sacaton, and eastern gamagrass, respectively.”
Claim · model-written summary
alkali sacaton had 355 stems after seven months.
- Taxon
- alkali sacatonSporobolus airoidese0
- Outcome
- stemse0
- Value
- 355e0
- Qualifier
- After 7 months of sowinge0
Not reportedDirection
Organisms pictured · Representative pictures of the matched species, not figures from the paper.
Verbatim
e0“After 7 months of sowing, a total of 250, 355, and 280 stems and 193, 150, and 87 floral stems were recorded in switchgrass, alkali sacaton, and eastern gamagrass, respectively.”
Claim · model-written summary
eastern gamagrass had 280 stems after seven months.
- Taxon
- eastern gamagrassTripsacum dactyloidese0
- Outcome
- stemse0
- Value
- 280e0
- Qualifier
- After 7 months of sowinge0
Not reportedDirection
Organisms pictured · Representative pictures of the matched species, not figures from the paper.
Verbatim
e0“After 7 months of sowing, a total of 250, 355, and 280 stems and 193, 150, and 87 floral stems were recorded in switchgrass, alkali sacaton, and eastern gamagrass, respectively.”
Claim · model-written summary
switchgrass had 193 floral stems after seven months.
- Taxon
- switchgrassPanicum virgatume0
- Outcome
- floral stemse0
- Value
- 193e0
- Qualifier
- After 7 months of sowinge0
Not reportedDirection
Organisms pictured · Representative pictures of the matched species, not figures from the paper.
Verbatim
e0“After 7 months of sowing, a total of 250, 355, and 280 stems and 193, 150, and 87 floral stems were recorded in switchgrass, alkali sacaton, and eastern gamagrass, respectively.”
Claim · model-written summary
alkali sacaton had 150 floral stems after seven months.
- Taxon
- alkali sacatonSporobolus airoidese0
- Outcome
- floral stemse0
- Value
- 150e0
- Qualifier
- After 7 months of sowinge0
Not reportedDirection
Organisms pictured · Representative pictures of the matched species, not figures from the paper.
Verbatim
e0“After 7 months of sowing, a total of 250, 355, and 280 stems and 193, 150, and 87 floral stems were recorded in switchgrass, alkali sacaton, and eastern gamagrass, respectively.”
Claim · model-written summary
eastern gamagrass had 87 floral stems after seven months.
- Taxon
- eastern gamagrassTripsacum dactyloidese0
- Outcome
- floral stemse0
- Value
- 87e0
- Qualifier
- After 7 months of sowinge0
Not reportedDirection
Organisms pictured · Representative pictures of the matched species, not figures from the paper.
Verbatim
e0“After 7 months of sowing, a total of 250, 355, and 280 stems and 193, 150, and 87 floral stems were recorded in switchgrass, alkali sacaton, and eastern gamagrass, respectively.”
Claim · model-written summary
The authors recommend propagating eastern gamagrass by plant material because seed production is low.
- Taxon
- Eastern gamagrassTripsacum dactyloidese0
- Outcome
- propagated by plant materiale0
Organisms pictured · Representative pictures of the matched species, not figures from the paper.
Verbatim
e0“Eastern gamagrass produces a low number of seeds; therefore, it must be propagated by plant material.”