Abstract
Soil properties are one of the main factors affecting the yield and qualitative value of grapes. Therefore, application of compost in a vineyard may affect grape production and chemical composition of berries. For these reasons, we started a field trial in 2001 to determine the long-term effects of compost application on growth, yield and quality of V. vinifera cv. Chardonnay grapes grown in a Tuscan vineyard (Italy). In summary, the results demonstrated that long-term addition of compost to a vineyard can be beneficial to soil characteristics, including organic matter and nitrate content, and had no or limited effects on plant growth and grape quality. Contrasting results were observed for production parameters, however, an average result from the nine years of trials shows that compost application maintained a similar average yield throughout the years, when compared to chemical fertilizers.
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Claims 4
Claim · model-written summary
Compost application maintained a similar average grape yield to chemical fertilizers over nine years
Verbatim
e0“Soil properties are one of the main factors affecting the yield and qualitative value of grapes”
e2“Contrasting results were observed for production parameters, however, an average result from the nine years of trials shows that compost application maintained a similar average yield throughout the years, when compared to chemical fertilizers”
Claim · model-written summary
Long-term compost addition can be beneficial to soil characteristics including organic matter and nitrate content
Not reportedComparatorDirection
Verbatim
e0“Soil properties are one of the main factors affecting the yield and qualitative value of grapes”
e1“long-term addition of compost to a vineyard can be beneficial to soil characteristics, including organic matter and nitrate content, and had no or limited effects on plant growth and grape quality”
Claim · model-written summary
Long-term compost addition had no or limited effects on plant growth and grape quality
- Taxon
- grapese0
- Treatment
- long-term addition of composte1
- Outcome
- plant growth and grape qualitye1
- Qualifier
- no or limited effectse1
Not reportedComparatorDirection
Verbatim
e0“Soil properties are one of the main factors affecting the yield and qualitative value of grapes”
e1“long-term addition of compost to a vineyard can be beneficial to soil characteristics, including organic matter and nitrate content, and had no or limited effects on plant growth and grape quality”
Claim · model-written summary
Production parameters gave contrasting results under compost application compared with chemical fertilizers
- Taxon
- grapese0
- Treatment
- compost applicatione2
- Outcome
- production parameterse2
- Comparator
- chemical fertilizerse2
Not reportedDirection
Verbatim
e0“Soil properties are one of the main factors affecting the yield and qualitative value of grapes”
e2“Contrasting results were observed for production parameters, however, an average result from the nine years of trials shows that compost application maintained a similar average yield throughout the years, when compared to chemical fertilizers”
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See all 38 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.