Abstract
Abstract The establishment and production of short‐lived perennial legumes like ‘American’ jointvetch ( Aeschynomene americana L.) has been more satisfactory than that of perennials in Florida. Since jointvetch can develop into a poorly digestible forage which is rejected by animals, a harvest frequency and cutting height study was conducted on a sandy, siliceous, Typic Haplaquod (Ona fine sand). Jointvetch was cut when plants reached initial heights of 30, 60, and 90 cm, and the plants were cut to leave 8 and 18‐cm stubble heights. Regrowth was cut when plants reached 30, 60, or 90 cm. The plant height at initial harvest was most important in determining the total seasonal yield. Plants cut at 30 cm initially had 60 cm regrowth with 200% more tillers than the initial, but plants cut initially at 60 or 90 cm resulted in regrowth with fewer tillers than the initial harvest. Cutting the initial harvest when plants were 30 cm tall followed by cutting regrowth at 90 cm or cutting the initial and continually recutting at 30 cm resulted in highest dry matter yield and quality. Both crude protein and in vitro organic matter digestion (IVOMD) decreased with increasing regrowth height and more importantly, increasing initial harvest height. Protein and IVOMD of plants cut at an 8‐cm stubble averaged 15.5 and 59.2%, respectively. However, protein (17.4%) and IVOMD (63.1%) were much higher when plants were cut at an 18‐cm stubble. These data indicated that the largest yield and highest quality may be obtained by cutting or grazing jointvetch at the shortest practical initial height (60‐cm initial; 8‐cm stubble). This will allow for multiple harvests of quality forage.
Abstract from the paper’s OpenAlex record, shown for indexing and research. Copyright remains with the authors or the publisher. Read at the source ↗
The text the model read, with the source record’s inline markup (italics, sub- and superscripts) rendered and its character entities decoded; quote offsets refer to the raw text.
Claims 10
Claim · model-written summary
Plant height at initial harvest was the most important factor determining total seasonal yield.
Not reportedDirection
Verbatim
t0“American Jointvetch”
e0“The plant height at initial harvest was most important in determining the total seasonal yield”
Claim · model-written summary
Plants cut initially at 30 cm had 60 cm regrowth with 200% more tillers than at the initial harvest.
Verbatim
t0“American Jointvetch”
e0“Plants cut at 30 cm initially had 60 cm regrowth with 200% more tillers than the initial”
Claim · model-written summary
Plants cut initially at 60 or 90 cm produced regrowth with fewer tillers than the initial harvest.
Verbatim
t0“American Jointvetch”
e0“plants cut initially at 60 or 90 cm resulted in regrowth with fewer tillers than the initial harvest”
Claim · model-written summary
Cutting at 30 cm initially followed by regrowth cut at 90 cm, or recutting continually at 30 cm, gave the highest dry matter yield and quality.
- Taxon
- American Jointvetcht0
- Treatment
- Cutting the initial harvest when plants were 30 cm tall followed by cutting regrowth at 90 cm or cutting the initial and continually recutting at 30 cme0
- Outcome
- dry matter yield and qualitye0
- Direction
- higheste0
Not reportedComparator
Verbatim
t0“American Jointvetch”
e0“Cutting the initial harvest when plants were 30 cm tall followed by cutting regrowth at 90 cm or cutting the initial and continually recutting at 30 cm resulted in highest dry matter yield and quality”
Claim · model-written summary
Crude protein and IVOMD decreased with increasing regrowth height and, more so, increasing initial harvest height.
- Taxon
- American Jointvetcht0
- Treatment
- increasing regrowth height and more importantly, increasing initial harvest heighte0
- Outcome
- crude protein and in vitro organic matter digestion (IVOMD)e0
- Direction
- decreasede0
Not reportedComparator
Verbatim
t0“American Jointvetch”
e0“Both crude protein and in vitro organic matter digestion (IVOMD) decreased with increasing regrowth height and more importantly, increasing initial harvest height”
Claim · model-written summary
Protein of plants cut at an 8-cm stubble averaged 15.5%.
Verbatim
t0“American Jointvetch”
e0“Protein and IVOMD of plants cut at an 8‐cm stubble averaged 15.5 and 59.2%”
Claim · model-written summary
IVOMD of plants cut at an 8-cm stubble averaged 59.2%.
Verbatim
t0“American Jointvetch”
e0“Protein and IVOMD of plants cut at an 8‐cm stubble averaged 15.5 and 59.2%”
Claim · model-written summary
Protein (17.4%) was much higher when plants were cut at an 18-cm stubble.
- Taxon
- American Jointvetcht0
- Treatment
- cut at an 18‐cm stubblee0
- Outcome
- proteine0
- Direction
- much highere0
- Value
- 17.4%e0
Not reportedComparator
Verbatim
t0“American Jointvetch”
e0“protein (17.4%) and IVOMD (63.1%) were much higher when plants were cut at an 18‐cm stubble”
Claim · model-written summary
IVOMD (63.1%) was much higher when plants were cut at an 18-cm stubble.
- Taxon
- American Jointvetcht0
- Treatment
- cut at an 18‐cm stubblee0
- Outcome
- IVOMDe0
- Direction
- much highere0
- Value
- 63.1%e0
Not reportedComparator
Verbatim
t0“American Jointvetch”
e0“protein (17.4%) and IVOMD (63.1%) were much higher when plants were cut at an 18‐cm stubble”
Claim · model-written summary
The authors conclude that the largest yield and highest quality may be obtained by cutting or grazing jointvetch at the shortest practical initial height (60 cm initial; 8 cm stubble).
Verbatim
e0“the largest yield and highest quality may be obtained by cutting or grazing jointvetch at the shortest practical initial height (60‐cm initial; 8‐cm stubble)”