Abstract
Seedlings of ‘Candid Charm’ cauliflower (Brassica oleracea L. Botrytis group) were grown in six different media comprised of varying proportions of a commercial peat-lite mix (PL) and a 50% yard trimmings 50% biosolids compost. A control of 100% PL was compared to treatments of PL:compost at 80%:20%, 60%:40%, 40%:60%, and 20%:80% respectively by volume, and 100% compost. The experiment was performed twice. Electrical conductivity of the medium increased with increasing compost additions, while the carbon:nitrogen ratio was greatly decreased. Increasing proportions of compost blended with PL inconsistently affected medium pH. Seedling emergence was delayed when compost comprised the majority of the medium, but stands were not reduced except with 100% compost. Decreases in seedling height and dry weight began to occur in the 60% PL, 40% compost treatment and were more pronounced with higher amounts of compost. Seedlings grown in 80% PL, 20% compost were similar to those grown in 100% PL with one exception: the compost blend resulted in an increased seedling N concentration. While we cannot conclude that a 20% replacement rate is ideal, the 80% PL, 20% compost medium was horticulturally acceptable as an alternative to 100% PL for cauliflower transplant production.
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Claims 9
Claim · model-written summary
Increasing compost increased medium electrical conductivity.
- Taxon
- cauliflower
Brassica oleracea var. botrytise0 - Treatment
- increasing compost additionse1
- Outcome
- Electrical conductivity of the mediume1
- Direction
- increasede1
Organisms pictured · Representative pictures of the matched species, not figures from the paper.
Verbatim
e0“Seedlings of ‘Candid Charm’ cauliflower”
e1“Electrical conductivity of the medium increased with increasing compost additions”
Claim · model-written summary
Increasing compost greatly decreased the medium carbon:nitrogen ratio.
- Taxon
- cauliflowerBrassica oleracea var. botrytise0
- Outcome
- carbon:nitrogen ratioe1
- Direction
- decreasede1
Organisms pictured · Representative pictures of the matched species, not figures from the paper.
Verbatim
e0“Seedlings of ‘Candid Charm’ cauliflower”
e1“the carbon:nitrogen ratio was greatly decreased”
Claim · model-written summary
Compost proportion inconsistently affected medium pH.
- Taxon
- cauliflowerBrassica oleracea var. botrytise0
- Treatment
- Increasing proportions of compost blended with PLe1
- Outcome
- medium pHe1
Not reportedDirection
Organisms pictured · Representative pictures of the matched species, not figures from the paper.
Verbatim
e0“Seedlings of ‘Candid Charm’ cauliflower”
e1“Increasing proportions of compost blended with PL inconsistently affected medium pH”
Claim · model-written summary
Seedling emergence was delayed when compost made up most of the medium.
- Taxon
- cauliflowerBrassica oleracea var. botrytise0
- Treatment
- compost comprised the majority of the mediume1
- Outcome
- Seedling emergencee1
- Direction
- delayede1
Not reportedComparator
Organisms pictured · Representative pictures of the matched species, not figures from the paper.
Verbatim
e0“Seedlings of ‘Candid Charm’ cauliflower”
e1“Seedling emergence was delayed when compost comprised the majority of the medium”
Claim · model-written summary
Seedling stands were reduced only in 100% compost.
- Taxon
- cauliflowerBrassica oleracea var. botrytise0
- Treatment
- 100% composte1
- Outcome
- standse1
- Direction
- reducede1
Not reportedComparator
Organisms pictured · Representative pictures of the matched species, not figures from the paper.
Verbatim
e0“Seedlings of ‘Candid Charm’ cauliflower”
e1“stands were not reduced except with 100% compost”
Claim · model-written summary
Seedling height and dry weight began declining at 60% PL and 40% compost and declined more at higher compost proportions.
- Taxon
- cauliflowerBrassica oleracea var. botrytise0
- Treatment
- 60% PL, 40% composte1
- Outcome
- seedling height and dry weighte1
- Direction
- Decreasese1
- Qualifier
- more pronounced with higher amounts of composte1
Not reportedComparator
Organisms pictured · Representative pictures of the matched species, not figures from the paper.
Verbatim
e0“Seedlings of ‘Candid Charm’ cauliflower”
e1“Decreases in seedling height and dry weight began to occur in the 60% PL, 40% compost treatment and were more pronounced with higher amounts of compost”
Claim · model-written summary
Seedlings in 80% PL and 20% compost were similar to those in 100% PL.
- Taxon
- cauliflowerBrassica oleracea var. botrytise0
- Treatment
- 80% PL, 20% composte1
- Outcome
- Seedlingse1
- Direction
- similare1
- Comparator
- 100% PLe1
Organisms pictured · Representative pictures of the matched species, not figures from the paper.
Verbatim
e0“Seedlings of ‘Candid Charm’ cauliflower”
e1“Seedlings grown in 80% PL, 20% compost were similar to those grown in 100% PL”
Claim · model-written summary
The 80% PL and 20% compost mix increased seedling nitrogen concentration relative to 100% PL.
- Taxon
- cauliflowerBrassica oleracea var. botrytise0
- Treatment
- 80% PL, 20% composte2
- Outcome
- seedling N concentratione1
- Direction
- increasede1
- Comparator
- 100% PLe2
Organisms pictured · Representative pictures of the matched species, not figures from the paper.
Verbatim
e0“Seedlings of ‘Candid Charm’ cauliflower”
e1“the compost blend resulted in an increased seedling N concentration”
e2“80% PL, 20% compost were similar to those grown in 100% PL”
Claim · model-written summary
The authors considered 80% PL and 20% compost horticulturally acceptable for cauliflower transplants.
- Taxon
- cauliflowerBrassica oleracea var. botrytise0
- Outcome
- 80% PL, 20% compost mediume1
- Qualifier
- horticulturally acceptablee1
- Comparator
- 100% PLe1
Organisms pictured · Representative pictures of the matched species, not figures from the paper.
Verbatim
e0“cauliflower transplant production”
e1“the 80% PL, 20% compost medium was horticulturally acceptable as an alternative to 100% PL”
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Claims are grouped by organism, treatment and what was measured or targeted. A paper counts as positive when any of its claims in the group is positive.