Abstract
The purpose of this study was to develop substrates with little or no peat by combining coir-based growing media with municipal compost and/or acacia biochar, two locally produced renewable resources, and to assess their effects on lettuce seedling emergence and growth, as well as their content in photosynthetic pigments and total phenols. Two experiments were carried out, the first with six mixes using compost and biochar blended with perlite, pine bark, and blonde peat to adjust some physicochemical characteristics. The mixes of coir: compost: pine bark: blonde peat (73:12:5:10, v/v) and coir: compost: biochar: blonde peat (73:12:10:5, v/v) had physicochemical characteristics closer to or within the normal range of the substrates. The presence of 12% compost and 10% biochar in the mixtures had no adverse effect on lettuce seed germination and cumulative seed emergence, which ranged from 90 to 99%. The seedling growth in those mixes was vigorous and higher than in other mixtures. Coir-based growing media with municipal solid waste compost and compost plus biochar can reduce the use of peat to a percentage of 5–10% v/v and the use of 17–22% v/v of locally produced renewable resources. In addition, mixtures affected the total phenol content in the lettuce leaves. Future research is needed to assess the behavior of seedlings after their transplantation.
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Claims 6
Claim · model-written summary
Two coir-based mixes had substrate properties near or within the normal range.
- Outcome
- physicochemical characteristicse0
- Direction
- closer to or withine0
- Comparator
- normal range of the substratese0
Not reportedTaxon
Verbatim
e0“The mixes of coir: compost: pine bark: blonde peat (73:12:5:10, v/v) and coir: compost: biochar: blonde peat (73:12:10:5, v/v) had physicochemical characteristics closer to or within the normal range of the substrates.”
Claim · model-written summary
The compost and biochar mixtures did not adversely affect lettuce seed germination or cumulative emergence, which ranged from 90 to 99%.
- Taxon
- lettuce
Lactuca sativae0 - Treatment
- 12% compost and 10% biochare0
- Outcome
- lettuce seed germination and cumulative seed emergencee0
- Direction
- no adverse effecte0
- Value
- 90 to 99%e0
Not reportedComparator
Organisms pictured · Representative pictures of the matched species, not figures from the paper.
Verbatim
e0“The presence of 12% compost and 10% biochar in the mixtures had no adverse effect on lettuce seed germination and cumulative seed emergence, which ranged from 90 to 99%.”
Claim · model-written summary
Lettuce seedlings grew more vigorously in those mixes than in other mixtures.
- Taxon
- lettuceLactuca sativat0
- Treatment
- those mixese0
- Outcome
- seedling growthe0
- Direction
- highere0
- Comparator
- other mixturese0
Organisms pictured · Representative pictures of the matched species, not figures from the paper.
Verbatim
e0“The seedling growth in those mixes was vigorous and higher than in other mixtures.”
t0“Lettuce”
Claim · model-written summary
The coir compost media could reduce peat use to 5–10% by volume.
Not reportedTaxon
Verbatim
e0“Coir-based growing media with municipal solid waste compost and compost plus biochar can reduce the use of peat to a percentage of 5–10% v/v and the use of 17–22% v/v of locally produced renewable resources.”
Claim · model-written summary
The media could use 17–22% locally produced renewable resources by volume.
Not reportedTaxon
Verbatim
e0“Coir-based growing media with municipal solid waste compost and compost plus biochar can reduce the use of peat to a percentage of 5–10% v/v and the use of 17–22% v/v of locally produced renewable resources.”
Claim · model-written summary
The mixtures affected total phenol content of lettuce leaves.
- Taxon
- lettuceLactuca sativae0
- Organ / stage
- leavese0
- Treatment
- mixturese0
- Outcome
- total phenol contente0
Not reportedComparatorDirection
Organisms pictured · Representative pictures of the matched species, not figures from the paper.
Verbatim
e0“mixtures affected the total phenol content in the lettuce leaves.”
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