Claim · model-written summary
At about 10 plants per m2, seed yield was 1567 kg per ha in 1981 when harvested at the optimum time.
- Taxon
- parsnip
Pastinaca sativat0 - Treatment
- c. 10 plants m ‐2e4
- Outcome
- seed yieldse4
- Value
- 1567e4
- Qualifier
- when harvested at the optimum timee4
- Setting
- 1981e4
Not reportedMaterialGeneCompoundOrgan / stageInteractorInteractor roleSecond interactorSecond interactor roleComparatorDirection
Organisms pictured · Representative pictures of the matched species, not figures from the paper.
Verbatim
t0“parsnip (Pastinaca sativa)”
e4“At c. 10 plants m ‐2 , seed yields were 1567, 4029 and 1040 kg ha ‐1 , in 1981, 1982 and 1983, respectively, when harvested at the optimum time”
Title
D. GRAY; JOYCE R. A. STECKEL; J. A. WARD Annals of Applied Biology 1985. doi:10.1111/j.1744-7348.1985.tb03171.x
Other claims from this paper (17)
- Association In 1980, seed yield increased by 50% as plant density increased from 5.6 to 35 plants per m2 (root-to-seed method).
- Association With the seed-to-seed method, seed yield increased to a maximum as plant density rose from about 1 to 10 plants per m2.
- Association At higher plant densities, seed yields were lower.
- Observation At about 10 plants per m2, seed yield was 4029 kg per ha in 1982 when harvested at the optimum time.
- Observation At about 10 plants per m2, seed yield was 1040 kg per ha in 1983 when harvested at the optimum time.
- Association Increasing plant density increased the number of non-seeding plants.
- Association Increasing plant density reduced the number of umbels per plant.
- Association Increasing plant density reduced the number of seeds per umbel.
- Association Mean seed weight was generally unaffected by plant density.
- Association Increasing plant density increased the proportion of primary-umbel seed.
- Association Maximum seed yields were obtained from crops harvested at a seed-moisture content of 50 to 70%.
- Observation The maximum seed yield at 50 to 70% seed moisture occurred 46 ± 2.4 days after flowering.
- Association Delaying harvest after the optimum date lost 33 kg per ha per week in 1980.
- Association Delaying harvest after the optimum date lost 35 kg per ha per week in 1981.
- Association Delaying harvest after the optimum date lost 139 kg per ha per week in 1982.
- Association Delaying harvest after the optimum date lost 32 kg per ha per week in 1983.
- Intervention effect Plants cut and dried in a windrow gave similar seed yields to plants dried in bins.