Abstract
Five grape marc composts prepared by different procedures (composting and vermicompost at several scales) were tested as potential components of plant growth media. The five composts had high organic matter content (>90%), low electric conductivity (<1 dS m(-1)) and a pH between 7 and 8. Different chemical and biochemical analyses performed indicated the higher stability of those composts submitted to a longer composting process or to a vermicomposting process (lower water soluble organic matter, respiration and dehydrogenase activity). In order to determine the suitability of the composts as substrate components, plant growth tests were performed by blending the composts with peat or commercial substrate at two compost rates (25% and 50%). The mixtures were sown with barley (Hordeum vulgare L.) and grown under controlled conditions in an incubation chamber. No prejudicial effects derived from the use of composted grape marc were observed, whatever the procedure of composting used. The results showed that four out of the five composts would be suitable for use in plant growth substrates elaboration, as they did not reduce productivity with respect to the control substrates.
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Claims 2
Claim · model-written summary
Composted grape marc caused no prejudicial effect on barley across composting procedures.
- Taxon
- barley
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Hordeum vulgaree1 - Treatment
- composted grape marce0
- Outcome
- prejudicial effectse0
- Direction
- Noe0
Not reportedComparator
Organisms pictured · Representative pictures of the matched species, not figures from the paper.
.jpg?width=500)
Verbatim
e0“No prejudicial effects derived from the use of composted grape marc were observed, whatever the procedure of composting used”
e1“The mixtures were sown with barley (Hordeum vulgare L.)”
Claim · model-written summary
Four of five composts did not reduce barley productivity relative to control substrates and were judged suitable for growth media.
- Taxon
- barleyHordeum vulgaree1
- Treatment
- four out of the five compostse0
- Outcome
- productivitye0
- Direction
- did not reducee0
- Comparator
- control substratese0
Organisms pictured · Representative pictures of the matched species, not figures from the paper.
Verbatim
e0“four out of the five composts would be suitable for use in plant growth substrates elaboration, as they did not reduce productivity with respect to the control substrates”
e1“The mixtures were sown with barley (Hordeum vulgare L.)”
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fertilization · yield · Hordeum vulgare (barley)Positive and negative results
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See all 550 papers →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.