Abstract
The “soilless” cultivation of blueberry (Vaccinium corymbosum L.) in containers with peat as substrate allows overcoming the problem of unsuitable soils, thus enhancing the spread of this crop in new areas. Since the use of peat presents several critical environmental and economic sustainability issues, the evaluation of alternative solutions is required. The effectiveness of compost produced with solid digestate and residues from the vine-wine chain to replace part of the peat was therefore tested. Micropropagated plants of cultivar Duke grown in three substrates consisting of a mixture of commercial peat with three compost fractions (10, 20, 40%) were compared with plants grown in 100% unfertilized or fertilized peat (0.3 g of Osmocote per pot). Plant height did not significantly differ between the five theses at the end of the trial, whereas the total number of nodes per plant was higher than in the control theses, due to a greater development of secondary shoots. The nutritional status of the plants, monitored with Dualex, during the growing season, was generally not significantly different in the innovative substrates compared to peat alone. In mid-summer the plants grown in substrates with compost showed the best nitrogen balance index (NBI values). Plants cultivated with medium-high percentages of compost (20–40%) showed a lower degree of defoliation at the end of the trial, dependent on a slower decline of vegetative activity. The final destructive measures of fresh and dry weight of biomass and of its partitioning between roots and shoots highlight that the use of compost did not negatively affect the production of biomass, but rather, in the theses with the highest percentages of compost (20–40%), root development was stimulated.
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Claims 7
Claim · model-written summary
Plant height did not differ significantly among the five substrate treatments.
- Taxon
- Vaccinium corymbosum L.
Vaccinium corymbosume1 - Material
- Dukee2
- Treatment
- mixture of commercial peat with three compost fractions (10, 20, 40%)e2
- Outcome
- Plant heighte4
- Direction
- did not significantly differe4
- Comparator
- 100% unfertilized or fertilized peate3
Organisms pictured · Representative pictures of the matched species, not figures from the paper.
Verbatim
e1“cultivation of blueberry (Vaccinium corymbosum L.) in containers with peat as substrate”
e2“Micropropagated plants of cultivar Duke grown in three substrates consisting of a mixture of commercial peat with three compost fractions (10, 20, 40%)”
e3“were compared with plants grown in 100% unfertilized or fertilized peat (0.3 g of Osmocote per pot)”
e4“Plant height did not significantly differ between the five theses at the end of the trial”
Claim · model-written summary
Total number of nodes per plant was higher in compost substrates than in the control peat.
- Taxon
- Vaccinium corymbosum L.Vaccinium corymbosume1
- Material
- Dukee2
- Treatment
- mixture of commercial peat with three compost fractions (10, 20, 40%)e2
- Outcome
- total number of nodes per plante5
- Direction
- highere5
- Comparator
- control thesese5
Organisms pictured · Representative pictures of the matched species, not figures from the paper.
Verbatim
e1“cultivation of blueberry (Vaccinium corymbosum L.) in containers with peat as substrate”
e2“Micropropagated plants of cultivar Duke grown in three substrates consisting of a mixture of commercial peat with three compost fractions (10, 20, 40%)”
e5“the total number of nodes per plant was higher than in the control theses, due to a greater development of secondary shoots”
Claim · model-written summary
Nutritional status of compost-substrate plants was generally not significantly different from peat alone.
- Taxon
- Vaccinium corymbosum L.Vaccinium corymbosume1
- Treatment
- innovative substratese6
- Outcome
- nutritional status of the plantse6
- Direction
- not significantly differente6
Organisms pictured · Representative pictures of the matched species, not figures from the paper.
Verbatim
e1“cultivation of blueberry (Vaccinium corymbosum L.) in containers with peat as substrate”
e6“The nutritional status of the plants, monitored with Dualex, during the growing season, was generally not significantly different in the innovative substrates compared to peat alone”
Claim · model-written summary
Substrates with compost showed the best nitrogen balance index in mid-summer.
- Taxon
- Vaccinium corymbosum L.Vaccinium corymbosume1
- Treatment
- substrates with composte7
- Outcome
- nitrogen balance index (NBI values)e7
- Direction
- beste7
Organisms pictured · Representative pictures of the matched species, not figures from the paper.
Verbatim
e1“cultivation of blueberry (Vaccinium corymbosum L.) in containers with peat as substrate”
e7“In mid-summer the plants grown in substrates with compost showed the best nitrogen balance index (NBI values)”
Claim · model-written summary
Medium-high compost fractions (20–40%) showed lower defoliation at the end of the trial.
- Taxon
- Vaccinium corymbosum L.Vaccinium corymbosume1
- Treatment
- medium-high percentages of compost (20–40%)e7
- Outcome
- degree of defoliatione7
- Direction
- lowere7
Organisms pictured · Representative pictures of the matched species, not figures from the paper.
Verbatim
e1“cultivation of blueberry (Vaccinium corymbosum L.) in containers with peat as substrate”
e7“Plants cultivated with medium-high percentages of compost (20–40%) showed a lower degree of defoliation at the end of the trial”
Claim · model-written summary
Compost use did not negatively affect biomass production.
- Taxon
- Vaccinium corymbosum L.Vaccinium corymbosume1
- Treatment
- use of composte7
- Outcome
- production of biomasse7
- Direction
- did not negatively affecte7
Organisms pictured · Representative pictures of the matched species, not figures from the paper.
Verbatim
e1“cultivation of blueberry (Vaccinium corymbosum L.) in containers with peat as substrate”
e7“the use of compost did not negatively affect the production of biomass”
Claim · model-written summary
Root development was stimulated in substrates with the highest compost percentages (20–40%).
- Taxon
- Vaccinium corymbosum L.Vaccinium corymbosume1
- Treatment
- highest percentages of compost (20–40%)e7
- Outcome
- root developmente7
- Direction
- was stimulatede7
Organisms pictured · Representative pictures of the matched species, not figures from the paper.
Verbatim
e1“cultivation of blueberry (Vaccinium corymbosum L.) in containers with peat as substrate”
e7“in the theses with the highest percentages of compost (20–40%), root development was stimulated”
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