Abstract
Oversupply of potassium (K) to grape vines can result in high grape berry K and pH, leading to difficulty in wine making and low wine quality. There is concern that application of mulch to grape vines may increase K supply and the associated risks. The effect of composted mulch from green wastes was investigated in a field trial involving six vineyards in New South Wales on soils commonly used for viticulture production in Australia, over three seasons (2006–08). Significant increases in extractable soil K were detected as a result of mulch application. Higher berry K and pH were also observed due to the mulch treatments, with the changes dependent on season and mulch rate. Increases in berry K were significantly related to the higher soil exchangeable K. The mean increase in berry K due to a mulch rate of 153 m3/ha was 123 mg/kg. The mean increase in berry pH was 0.02 units observed in two seasons. Application of mulch can increase berry K and pH, but the changes are small compared with variations observed among vineyard sites and between seasons.
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Claims 6
Claim · model-written summary
Mulch increased extractable soil K.
- Taxon
- wine grape
Vitis viniferat0 - Treatment
- mulch applicatione0
- Outcome
- extractable soil Ke0
- Direction
- increasese0
Not reportedComparator
Organisms pictured · Representative pictures of the matched species, not figures from the paper.
Verbatim
e0“Significant increases in extractable soil K were detected as a result of mulch application.”
t0“Effect of composted mulch application on soil and wine grape potassium status”
Claim · model-written summary
Mulch increased berry K.
- Taxon
- wine grapeVitis viniferat0
- Treatment
- mulch treatmentse0
- Outcome
- berry Ke0
- Direction
- Highere0
Not reportedComparator
Organisms pictured · Representative pictures of the matched species, not figures from the paper.
Verbatim
e0“Higher berry K and pH were also observed due to the mulch treatments, with the changes dependent on season and mulch rate.”
t0“Effect of composted mulch application on soil and wine grape potassium status”
Claim · model-written summary
Mulch increased pH.
- Taxon
- wine grapeVitis viniferat0
- Treatment
- mulch treatmentse0
- Outcome
- pHe0
- Direction
- Highere0
Not reportedComparator
Organisms pictured · Representative pictures of the matched species, not figures from the paper.
Verbatim
e0“Higher berry K and pH were also observed due to the mulch treatments, with the changes dependent on season and mulch rate.”
t0“Effect of composted mulch application on soil and wine grape potassium status”
Claim · model-written summary
Mulch increased berry K by 123 mg/kg.
- Taxon
- wine grapeVitis viniferat0
- Treatment
- mulch rate of 153 m3/hae0
- Outcome
- berry Ke0
- Direction
- increasee0
- Value
- 123 mg/kge0
Not reportedComparator
Organisms pictured · Representative pictures of the matched species, not figures from the paper.
Verbatim
e0“The mean increase in berry K due to a mulch rate of 153 m3/ha was 123 mg/kg.”
t0“Effect of composted mulch application on soil and wine grape potassium status”
Claim · model-written summary
Mulch increased berry pH by 0.02 units.
- Taxon
- wine grapeVitis viniferat0
- Treatment
- mulcht0
- Outcome
- berry pHe0
- Direction
- increasee0
- Value
- 0.02 unitse0
- Qualifier
- two seasonse0
Not reportedComparator
Organisms pictured · Representative pictures of the matched species, not figures from the paper.
Verbatim
e0“The mean increase in berry pH was 0.02 units observed in two seasons.”
t0“Effect of composted mulch application on soil and wine grape potassium status”
Claim · model-written summary
Berry K increase was related to higher soil exchangeable K.
- Taxon
- wine grapeVitis viniferat0
- Compound
- soil exchangeable Ke0
- Outcome
- berry Ke0
- Direction
- Increasese0
Organisms pictured · Representative pictures of the matched species, not figures from the paper.
Verbatim
e0“Increases in berry K were significantly related to the higher soil exchangeable K.”
t0“wine grape”
The same questions in other papers
mulching · soil: chemistry · Vitis vinifera (wine grape)Positive and negative results
1 in the opposite direction
- 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.