Abstract
Abstract The influence of autumn management on the productivity, morphology, and botanical composition of an orchardgrass ( Dactylis glomerata L.) and white clover ( Trifolium repens L.) sward was investigated over 3 yr. Stockpiled (nongrazed) canopies were clipped at fixed intervals throughout autumn from exclosures established in each of nine paddocks to determine growth rates and productivity of standing herbage. Pastures were grazed by weaned lambs ( Ovis aries ) beginning in August in each of 3 yr. Grazing animals were removed from three replicate paddocks after 30 (early closed), 60, or 90 d (late closed). Paddocks were sampled at 2‐wk intervals to determine herbage mass, botanical composition, and total nonstructural carbohydrate concentrations of grasses and legumes. Early‐closed paddocks continued to accumulate herbage during autumn, resulting in greater senescence over winter than in lateclosed paddocks. Herbage mass in spring was not affected by autumn management. Late‐closed paddocks had significantly more clover than did early‐closed paddocks in spring. Early‐closed paddocks were comprised of grass plants that had relatively few and large tillers and by white clover plants that had fewer growing points than those in lateclosed paddocks. In comparison, late‐closed paddocks had grass plants comprised of many small tillers and white clover plants with about twice as many growing points. Stolon mass was greater, but total nonstructural carbohydrate concentrations were less during autumn in late‐ than in early‐closed paddocks. The decrease in clover mass over the course of the experiment coincided with a decrease in total herbage mass. A delicate balance between growing points and carbohydrates may be involved in clover presence in mixed swards.
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 8
Claim · model-written summary
Grazing removal after 30 days (early closed) gave greater senescence over winter than late closure.
- Taxon
- orchardgrass ( Dactylis glomerata L.) and white clover ( Trifolium repens L.)
Trifolium repens.jpg?width=60)
Dactylis glomeratae1 - Treatment
- Grazing animals were removede2
- Outcome
- senescence over wintere3
- Direction
- greatere3
- Comparator
- lateclosed paddockse3
Organisms pictured · Representative pictures of the matched species, not figures from the paper.
.jpg?width=500)
Verbatim
e1“an orchardgrass ( Dactylis glomerata L.) and white clover ( Trifolium repens L.) sward was investigated over 3 yr”
e2“Grazing animals were removed from three replicate paddocks after 30 (early closed), 60, or 90 d (late closed)”
e3“resulting in greater senescence over winter than in lateclosed paddocks”
Claim · model-written summary
Autumn management did not affect herbage mass in spring.
- Taxon
- orchardgrass ( Dactylis glomerata L.) and white clover ( Trifolium repens L.)Trifolium repensDactylis glomeratae1
- Treatment
- autumn managemente4
- Outcome
- Herbage mass in springe4
- Direction
- was not affectede4
Not reportedComparator
Organisms pictured · Representative pictures of the matched species, not figures from the paper.
Verbatim
e1“an orchardgrass ( Dactylis glomerata L.) and white clover ( Trifolium repens L.) sward was investigated over 3 yr”
e4“Herbage mass in spring was not affected by autumn management”
Claim · model-written summary
Late-closed paddocks had significantly more clover than early-closed paddocks in spring.
- Taxon
- orchardgrass ( Dactylis glomerata L.) and white clover ( Trifolium repens L.)Trifolium repensDactylis glomeratae1
- Treatment
- Grazing animals were removede2
- Outcome
- clovere5
- Direction
- moree5
Not reportedComparator
Organisms pictured · Representative pictures of the matched species, not figures from the paper.
Verbatim
e1“an orchardgrass ( Dactylis glomerata L.) and white clover ( Trifolium repens L.) sward was investigated over 3 yr”
e2“Grazing animals were removed from three replicate paddocks after 30 (early closed), 60, or 90 d (late closed)”
e5“had significantly more clover than did”
Claim · model-written summary
White clover plants in late-closed paddocks had about twice as many growing points.
- Taxon
- orchardgrass ( Dactylis glomerata L.) and white clover ( Trifolium repens L.)Trifolium repensDactylis glomeratae1
- Treatment
- Grazing animals were removede2
- Outcome
- growing pointse7
- Direction
- about twice as manye7
Not reportedComparator
Organisms pictured · Representative pictures of the matched species, not figures from the paper.
Verbatim
e1“an orchardgrass ( Dactylis glomerata L.) and white clover ( Trifolium repens L.) sward was investigated over 3 yr”
e2“Grazing animals were removed from three replicate paddocks after 30 (early closed), 60, or 90 d (late closed)”
e7“white clover plants with about twice as many growing points”
Claim · model-written summary
Stolon mass was greater in late-closed paddocks.
- Taxon
- orchardgrass ( Dactylis glomerata L.) and white clover ( Trifolium repens L.)Trifolium repensDactylis glomeratae1
- Treatment
- Grazing animals were removede2
- Outcome
- Stolon masse6
- Direction
- greatere6
Not reportedComparator
Organisms pictured · Representative pictures of the matched species, not figures from the paper.
Verbatim
e1“an orchardgrass ( Dactylis glomerata L.) and white clover ( Trifolium repens L.) sward was investigated over 3 yr”
e2“Grazing animals were removed from three replicate paddocks after 30 (early closed), 60, or 90 d (late closed)”
e6“Stolon mass was greater, but total nonstructural carbohydrate concentrations were less during autumn”
Claim · model-written summary
Total nonstructural carbohydrate concentrations were lower during autumn in late-closed paddocks.
- Taxon
- orchardgrass ( Dactylis glomerata L.) and white clover ( Trifolium repens L.)Trifolium repensDactylis glomeratae1
- Treatment
- Grazing animals were removede2
- Outcome
- total nonstructural carbohydrate concentrationse6
- Direction
- lesse6
Not reportedComparator
Organisms pictured · Representative pictures of the matched species, not figures from the paper.
Verbatim
e1“an orchardgrass ( Dactylis glomerata L.) and white clover ( Trifolium repens L.) sward was investigated over 3 yr”
e2“Grazing animals were removed from three replicate paddocks after 30 (early closed), 60, or 90 d (late closed)”
e6“Stolon mass was greater, but total nonstructural carbohydrate concentrations were less during autumn”
Claim · model-written summary
The decrease in clover mass coincided with a decrease in total herbage mass.
- Taxon
- orchardgrass ( Dactylis glomerata L.) and white clover ( Trifolium repens L.)Trifolium repensDactylis glomeratae1
- Treatment
- total herbage masse6
- Outcome
- clover masse6
- Direction
- decreasee6
Organisms pictured · Representative pictures of the matched species, not figures from the paper.
Verbatim
e1“an orchardgrass ( Dactylis glomerata L.) and white clover ( Trifolium repens L.) sward was investigated over 3 yr”
e6“The decrease in clover mass over the course of the experiment coincided with a decrease in total herbage mass”
Claim · model-written summary
A balance between growing points and carbohydrates may be involved in clover presence in mixed swards.
- Taxon
- orchardgrass ( Dactylis glomerata L.) and white clover ( Trifolium repens L.)Trifolium repensDactylis glomeratae1
- Outcome
- clover presence in mixed swardse5
- Qualifier
- A delicate balance between growing points and carbohydratese5
Organisms pictured · Representative pictures of the matched species, not figures from the paper.
Verbatim
e1“an orchardgrass ( Dactylis glomerata L.) and white clover ( Trifolium repens L.) sward was investigated over 3 yr”
e5“A delicate balance between growing points and carbohydrates may be involved in clover presence in mixed swards”