Abstract
Compost from cotton gin trash was evaluated as a peat substitute in Codiaeum variegatum L. production. Rooted cuttings were grown for 8 months in media containing cotton gin trash compost, sphagnum peatmoss, and perlite in 1:3:4, 1:1:2, and 3:1:4 ratios respectively, and their growth was compared with a control medium of 1 peat : 1 perlite (by volume). Even when 75% of peat in the control medium was replaced by cotton gin trash compost, plant height, leaf number, and leaf size were unaffected, whereas root dry weight was increased in the medium with 25% peat replacement. Although replacement of peat by cotton gin trash compost did not affect quantitative characteristics of croton foliage growth, it affected the foliage color, as plants in media with cotton gin trash compost had more areas colored red in their leaves. The increase of red coloration was proportional to the increase of cotton gin trash compost in the medium. The phenomenon was more intense in the lower leaves than the apical ones. Anthocyanin concentration measurements showed that the gradual increase of cotton gin trash compost level in the growth medium caused a gradual increase of the anthocyanin concentration in the leaves. This effect is discussed in relation to chemical properties of the media, as electrical conductivity, pH, and nutrient concentrations. The gradual increase of cotton gin trash compost level caused an analogous increase of N, P, and K concentrations in the medium. Also, media with cotton gin trash compost had high electrical conductivity at the beginning of the culture period, related to the cotton gin trash compost level, which was reduced to values similar to that in the control medium after 50 days of culture. Na concentration in the media ranged similarly to electrical conductivity. The pH was positively related to cotton gin trash compost level, and media with a high cotton gin trash compost level had increased pH during the culture period compared with the control.
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Claims 12
Claim · model-written summary
Replacing 75% peat with compost did not affect height, leaf number, or leaf size.
- Taxon
- Codiaeum variegatum L.
Codiaeum variegatumt0 - Treatment
- 75% of peat in the control medium was replaced by cotton gin trash composte0
- Outcome
- plant height, leaf number, and leaf sizee0
- Direction
- unaffectede0
- Comparator
- control mediume0
Organisms pictured · Representative pictures of the matched species, not figures from the paper.
Verbatim
e0“Even when 75% of peat in the control medium was replaced by cotton gin trash compost, plant height, leaf number, and leaf size were unaffected”
t0“Codiaeum variegatum L.”
Claim · model-written summary
At 25% peat replacement, root dry weight increased.
- Taxon
- Codiaeum variegatum L.Codiaeum variegatumt0
- Treatment
- 25% peat replacemente0
- Outcome
- root dry weighte0
- Direction
- increasede0
Not reportedComparator
Organisms pictured · Representative pictures of the matched species, not figures from the paper.
Verbatim
e0“root dry weight was increased in the medium with 25% peat replacement.”
t0“Codiaeum variegatum L.”
Claim · model-written summary
Compost media produced more red leaf areas.
- Taxon
- Codiaeum variegatum L.Codiaeum variegatumt0
- Treatment
- cotton gin trash composte0
- Outcome
- areas colored red in their leavese0
- Direction
- moree0
Not reportedComparator
Organisms pictured · Representative pictures of the matched species, not figures from the paper.
Verbatim
e0“plants in media with cotton gin trash compost had more areas colored red in their leaves.”
t0“Codiaeum variegatum L.”
Claim · model-written summary
Red coloration increased with compost level.
- Taxon
- Codiaeum variegatum L.Codiaeum variegatumt0
- Treatment
- cotton gin trash composte0
- Outcome
- red coloratione0
- Direction
- increasee0
Organisms pictured · Representative pictures of the matched species, not figures from the paper.
Verbatim
e0“The increase of red coloration was proportional to the increase of cotton gin trash compost in the medium.”
t0“Codiaeum variegatum L.”
Claim · model-written summary
The red coloration effect was stronger in lower leaves.
- Taxon
- Codiaeum variegatum L.Codiaeum variegatumt0
- Organ / stage
- lower leavese0
- Outcome
- more intensee0
- Direction
- more intensee0
- Comparator
- apical onese0
Organisms pictured · Representative pictures of the matched species, not figures from the paper.
Verbatim
e0“The phenomenon was more intense in the lower leaves than the apical ones.”
t0“Codiaeum variegatum L.”
Claim · model-written summary
Leaf anthocyanin concentration increased gradually with compost level.
- Taxon
- Codiaeum variegatum L.Codiaeum variegatumt0
- Treatment
- cotton gin trash compost levele0
- Outcome
- anthocyanin concentration in the leavese0
- Direction
- increasee0
Organisms pictured · Representative pictures of the matched species, not figures from the paper.
Verbatim
e0“the gradual increase of cotton gin trash compost level in the growth medium caused a gradual increase of the anthocyanin concentration in the leaves.”
t0“Codiaeum variegatum L.”
Claim · model-written summary
Compost level raised N, P, and K concentrations in medium.
- Treatment
- cotton gin trash compost levele0
- Outcome
- N, P, and K concentrations in the mediume0
- Direction
- increasee0
Not reportedTaxon
Verbatim
e0“The gradual increase of cotton gin trash compost level caused an analogous increase of N, P, and K concentrations in the medium.”
Claim · model-written summary
Compost media had high initial electrical conductivity associated with compost level.
Not reportedTaxon
Verbatim
e0“media with cotton gin trash compost had high electrical conductivity at the beginning of the culture period, related to the cotton gin trash compost level”
Claim · model-written summary
Medium conductivity declined to control values after 50 days.
- Outcome
- values similar to that in the control mediume0
- Direction
- reducede0
- Qualifier
- after 50 days of culturee0
Not reportedTaxon
Verbatim
e0“which was reduced to values similar to that in the control medium after 50 days of culture.”
Claim · model-written summary
Medium sodium concentration tracked electrical conductivity.
Not reportedTaxonDirection
Verbatim
e0“Na concentration in the media ranged similarly to electrical conductivity.”
Claim · model-written summary
Medium pH was positively related to compost level.
Not reportedTaxon
Verbatim
e0“The pH was positively related to cotton gin trash compost level”
Claim · model-written summary
High-compost medium had increased pH during cultivation versus control.
Not reportedTaxon
Verbatim
e0“media with a high cotton gin trash compost level had increased pH during the culture period compared with the control.”
The same questions in other papers
in vitro · growth · Codiaeum variegatum (garden croton)Positive and negative results
2 in the opposite direction
- positive
- positive
fertilization · growth · Codiaeum variegatum (garden croton)Positive and negative results
3 in the opposite direction
- positive
- positive
- positive
growing medium · growth · Codiaeum variegatum (garden croton)Results agree
3 papers in the same direction as this paper
- positive
- positive
- positive
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.