Paper · 1992 · HortScience

GROWTH OF BEDDING PLANTS IN MINERAL WOOL AND MINERAL WOOL/PEAT MIXES

Thomas M. Contrisciano; E. Jay Holcomb

6
claims
6
verbatim quotes
1
citations
1
research areas
✓
Open access

Abstract

The objective of this research was to develop a mineral wool based growing medium for the horticultural industry. Two types of hydrophilic mineral wool, clean wool (CW) and unclean wool (UC) were used unamended, as well as both types in combinations with 25, 50, and 75 percent peat moss (PM). A control of 100 percent (PM) was also used. Unamended CW had a low bulk density, excellent water holding capacity, good aeration, but high pH. Once PM was added to CW, bulk density still remained low, water holding capacity and aeration remained good, and the pH dropped to a more suitable level. Unamended UW had a high bulk density, good water holding capacity, poor aeration, and high pH. Once PM was added to UW, bulk density decreased, water holding capacity remained good, aeration increased, and pH decreased to a more optimal level. Impatiens `Violet' and Begonia `Whiskey' were grown in the nine treatments for six and nine weeks respectively. At harvest, plant growth was evaluated by height, diameter, fresh weight, dry weight, and tissue analysis. Plant growth response showed plants grown in unamended CW, UW, and PM were smaller in size and lighter in fresh and dry weights than those in 50 percent wool/50 percent PM. The plants grown in 25 and 75 percent PM were similar to the 50 percent wool/50 percent PM in size and weight.

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Claims 6

Observationobservedoriginal resultmeasured

Claim · model-written summary

Clean wool had low bulk density, good water retention and aeration, and high pH.

Treatment
Unamended CWe0
Outcome
bulk density, excellent water holding capacity, good aeration, but high pHe0

Not reportedTaxon

Verbatim

e0

“Unamended CW had a low bulk density, excellent water holding capacity, good aeration, but high pH”

✓ located verbatim in the source · abstract, characters 339–436 · show in text ↑
Intervention effectobservedoriginal resultpositivemeasured

Claim · model-written summary

Adding peat to clean wool retained favorable physical traits and reduced pH.

Treatment
PMe0
Outcome
pHe0
Direction
droppede0
Comparator
CWe0

Not reportedTaxon

Verbatim

e0

“Once PM was added to CW, bulk density still remained low, water holding capacity and aeration remained good, and the pH dropped to a more suitable level”

✓ located verbatim in the source · abstract, characters 438–590 · show in text ↑
Observationobservedoriginal resultmeasured

Claim · model-written summary

Unclean wool had high bulk density and pH, good water retention, and poor aeration.

Treatment
Unamended UWe0
Outcome
bulk density, good water holding capacity, poor aeration, and high pHe0

Not reportedTaxon

Verbatim

e0

“Unamended UW had a high bulk density, good water holding capacity, poor aeration, and high pH”

✓ located verbatim in the source · abstract, characters 592–685 · show in text ↑
Intervention effectobservedoriginal resultpositivemeasured

Claim · model-written summary

Peat improved unclean wool bulk density, aeration and pH.

Treatment
PMe0
Outcome
bulk densitye0
Direction
decreasede0
Comparator
UWe0

Not reportedTaxon

Verbatim

e0

“Once PM was added to UW, bulk density decreased, water holding capacity remained good, aeration increased, and pH decreased to a more optimal level”

✓ located verbatim in the source · abstract, characters 687–834 · show in text ↑
Intervention effectobservedoriginal resultnegativemeasured

Claim · model-written summary

Plants in unamended wool or peat were smaller and lighter than in a 50/50 mix.

Taxon
plantsViridiplantaee0
Treatment
unamended CW, UW, and PMe0
Outcome
size and lighter in fresh and dry weightse0
Direction
smallere0
Comparator
50 percent wool/50 percent PMe0

Verbatim

e0

“Plant growth response showed plants grown in unamended CW, UW, and PM were smaller in size and lighter in fresh and dry weights than those in 50 percent wool/50 percent PM”

✓ located verbatim in the source · abstract, characters 1055–1226 · show in text ↑
Intervention effectobservedoriginal resultno effectmeasured

Claim · model-written summary

Plants in 25% and 75% peat were similar in size and weight to plants in 50% peat.

Taxon
plantsViridiplantaee0
Treatment
25 and 75 percent PMe0
Outcome
size and weighte0
Direction
similare0
Comparator
50 percent wool/50 percent PMe0

Verbatim

e0

“The plants grown in 25 and 75 percent PM were similar to the 50 percent wool/50 percent PM in size and weight”

✓ located verbatim in the source · abstract, characters 1228–1337 · show in text ↑

growing medium · growth · Viridiplantae (plants)Positive and negative results

12 papers: 9 positive, 3 negative or no effect

2 papers in the same direction as this paper · 9 in the opposite direction

  1. positive
  2. positive
  3. positive

8 papers more in this group

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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.