Abstract
Biochar is used as soil amendment and enhancer of plant growth, but the mechanisms involved in grapevine are not understood. In this study, the short-term effects of amendments were evaluated in a trial combining three substrates (biochar, compost, peat-based media) with three doses (30, 70, 100%) along a time sequence on 1-year-old bare root cuttings of grapevine. Amendments were analyzed for elemental composition. Soil pH, electrical conductivity (EC), chlorophyll (CHL), flavonoids (FL), anthocyans (ANT) and nitrogen balance index (NBI) were measured. Biochar differed from other amendments for stable C structures, where nutrients and lignin residues were high in compost. Biochar increased soil pH, whereas biochar plus compost mixture augmented EC. The amended plants had detrimental effects on root, true and lateral leaves. Nevertheless, at the lowest rate biochar increased the primary shoot and total scion to root biomass ratio. Among biochemicals, ANT and NBI were mostly affected by biochar, while compost gave only slight increments. Thus, although biochar rate was not adequate for the shedding in open field our results suggest that biochar might be useful in nursery when used at low dosages.
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Claims 9
Claim · model-written summary
Biochar had stable carbon structures while compost had high nutrients and lignin residues.
VitisNot reportedDirection
Organisms pictured · Representative pictures of the matched species, not figures from the paper.
Verbatim
e0“Biochar differed from other amendments for stable C structures, where nutrients and lignin residues were high in compost.”
t0“grapevine”
Claim · model-written summary
Biochar increased soil pH.
Not reportedComparator
Organisms pictured · Representative pictures of the matched species, not figures from the paper.
Verbatim
e0“Biochar increased soil pH”
t0“grapevine”
Claim · model-written summary
A biochar and compost mixture increased electrical conductivity.
Not reportedComparator
Organisms pictured · Representative pictures of the matched species, not figures from the paper.
Verbatim
e0“biochar plus compost mixture augmented EC.”
t0“grapevine”
Claim · model-written summary
Amendments harmed root and leaf traits.
Not reportedComparator
Organisms pictured · Representative pictures of the matched species, not figures from the paper.
Verbatim
e0“The amended plants had detrimental effects on root, true and lateral leaves.”
t0“grapevine”
Claim · model-written summary
Low-rate biochar increased primary shoot growth.
Not reportedComparator
Organisms pictured · Representative pictures of the matched species, not figures from the paper.
Verbatim
e0“at the lowest rate biochar increased the primary shoot and total scion to root biomass ratio.”
t0“grapevine”
Claim · model-written summary
Low-rate biochar increased total scion to root biomass ratio.
Not reportedComparator
Organisms pictured · Representative pictures of the matched species, not figures from the paper.
Verbatim
e0“at the lowest rate biochar increased the primary shoot and total scion to root biomass ratio.”
t0“grapevine”
Claim · model-written summary
Biochar mostly affected anthocyans and nitrogen balance index.
Not reportedComparatorDirection
Organisms pictured · Representative pictures of the matched species, not figures from the paper.
Verbatim
e0“ANT and NBI were mostly affected by biochar”
t0“grapevine”
Claim · model-written summary
Compost produced slight biochemical increments.
Not reportedComparator
Organisms pictured · Representative pictures of the matched species, not figures from the paper.
Verbatim
e0“compost gave only slight increments.”
t0“grapevine”
Claim · model-written summary
The authors suggest low-dose biochar use in nurseries.
Organisms pictured · Representative pictures of the matched species, not figures from the paper.
Verbatim
e0“biochar might be useful in nursery when used at low dosages.”
t0“grapevine”
The same questions in other papers
biochar · growth · VitisResults 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.