Abstract
Experiments concerned with the application of phosphorus (P) to the soil annually at the rate of 50 kg and 150 kg P/ha over an eight-year duration in combination with nitrogen (NP and NP3) or nitrogen and potassium (NPK and NP3K) were conducted in Erie County, Pennsylvania. Yield, number of clusters per vine, cluster weight, berry weight, vine capacity and fruitfulness per retained node were increased by NK, NPK, and NP3K treatments. NPK and NP3K treatments were more effective than NK. Other treatments — N, NP, and NP3 treatments —either were ineffective or inconsistent. Soluble solids percentage of the juice was reduced by the NPK and NP3K treatments. However, a negative correlation was found between yield and soluble solids content of the juice (r = -0.8631). Available soil P was increased by P application at 150 kg/ha. Available soil K was increased by K application at 95 kg/ha. Plant analyses revealed that petiole P increased as a result of applying P to the soil. Positive correlations existed between petiole magnesium (Mg) and petiole calcium (Ca); petiole zinc (Zn) and petiole boron (B); number of clusters per vine and yield. Petiole P and petiole Zn were not associated.
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Claims 13
Claim · model-written summary
NK, NPK and NP3K increased grape yield and yield components.
- Taxon
- Vitis LabruscaL. CV Concordt0
- Treatment
- NK, NPK, and NP3K treatmentse0
- Outcome
- Yield, number of clusters per vine, cluster weighte0
- Direction
- increasede0
Not reportedComparator
Verbatim
e0“Yield, number of clusters per vine, cluster weight, berry weight, vine capacity and fruitfulness per retained node were increased by NK, NPK, and NP3K treatments”
t0“Vitis LabruscaL. CV Concord”
Claim · model-written summary
NK, NPK and NP3K increased berry weight, vine capacity and fruitfulness.
- Taxon
- Vitis LabruscaL. CV Concordt0
- Treatment
- NK, NPK, and NP3K treatmentse0
- Outcome
- berry weight, vine capacity and fruitfulness per retained nodee0
- Direction
- increasede0
Not reportedComparator
Verbatim
e0“Yield, number of clusters per vine, cluster weight, berry weight, vine capacity and fruitfulness per retained node were increased by NK, NPK, and NP3K treatments”
t0“Vitis LabruscaL. CV Concord”
Claim · model-written summary
NPK and NP3K were more effective than NK.
Verbatim
e0“NPK and NP3K treatments were more effective than NK”
t0“Vitis LabruscaL. CV Concord”
Claim · model-written summary
N, NP and NP3 were ineffective or inconsistent.
Verbatim
e0“Other treatments — N, NP, and NP3 treatments —either were ineffective or inconsistent”
t0“Vitis LabruscaL. CV Concord”
Claim · model-written summary
NPK and NP3K reduced juice soluble solids percentage.
- Taxon
- Vitis LabruscaL. CV Concordt0
- Treatment
- NPK and NP3K treatmentse0
- Outcome
- Soluble solids percentage of the juicee0
- Direction
- reducede0
Not reportedComparator
Verbatim
e0“Soluble solids percentage of the juice was reduced by the NPK and NP3K treatments”
t0“Vitis LabruscaL. CV Concord”
Claim · model-written summary
Yield and juice soluble solids content were negatively correlated.
Verbatim
e0“a negative correlation was found between yield and soluble solids content of the juice (r = -0.8631)”
t0“Vitis LabruscaL. CV Concord”
Claim · model-written summary
Phosphorus application at 150 kg/ha increased available soil P.
- Taxon
- Vitis LabruscaL. CV Concordt0
- Treatment
- P application at 150 kg/hae0
- Outcome
- Available soil Pe0
- Direction
- increasede0
Not reportedComparator
Verbatim
e0“Available soil P was increased by P application at 150 kg/ha”
t0“Vitis LabruscaL. CV Concord”
Claim · model-written summary
Potassium application at 95 kg/ha increased available soil K.
- Taxon
- Vitis LabruscaL. CV Concordt0
- Treatment
- K application at 95 kg/hae0
- Outcome
- Available soil Ke0
- Direction
- increasede0
Not reportedComparator
Verbatim
e0“Available soil K was increased by K application at 95 kg/ha”
t0“Vitis LabruscaL. CV Concord”
Claim · model-written summary
Soil phosphorus application increased petiole P.
- Taxon
- Vitis LabruscaL. CV Concordt0
- Treatment
- applying P to the soile0
- Outcome
- petiole Pe0
- Direction
- increasede0
Not reportedComparator
Verbatim
e0“petiole P increased as a result of applying P to the soil”
t0“Vitis LabruscaL. CV Concord”
Claim · model-written summary
Petiole magnesium and calcium were positively correlated.
Verbatim
e0“Positive correlations existed between petiole magnesium (Mg) and petiole calcium (Ca)”
t0“Vitis LabruscaL. CV Concord”
Claim · model-written summary
Petiole zinc and boron were positively correlated.
Not reportedDirection
Verbatim
e0“petiole zinc (Zn) and petiole boron (B)”
t0“Vitis LabruscaL. CV Concord”
Claim · model-written summary
Cluster number and yield were positively correlated.
Not reportedDirection
Verbatim
e0“number of clusters per vine and yield”
t0“Vitis LabruscaL. CV Concord”
Claim · model-written summary
Petiole P and Zn were not associated.
Verbatim
e0“Petiole P and petiole Zn were not associated”
t0“Vitis LabruscaL. CV Concord”
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- no effect
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See all 40 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.