Abstract
The influence of suppling nutrient solution lacking N, P, K or Ca during certain periods on vine growth, yield and quality of berries of Black Queen variety were studied by means of sand or solution culture.1. No application of nitrogen from December to the middle of April did not show unfavorable effect on vine growth and yield, but lack of nitrogen during any period from the middle of April and later on decreased the yield. It was true even during the period as late as September. No application of nitrogen after August (when berries began to color) forced coloration of berries, but had no effect on their quality.2. Phosphorus was necessary for vine growth and yield from the middle of March (when sap began to flow) on, and its delayed application after that time decreased the yield. No application of phosphorus from September to the middle of March or after late July (when seed was hardening) showed no unfavorable effect.3. No application of potassium from December to the middle of April and of calcium from December to the middle of May showed no unfavorable effects on vine growth and quality of berries, but lack of potassium and calcium during any other period excepting the above mentioned decreased the yield.
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Claims 11
Claim · model-written summary
Withholding nitrogen from December to mid-April had no unfavorable effect on vine growth and yield.
- Treatment
- No application of nitrogen from December to the middle of Aprile0
- Outcome
- vine growth and yielde0
- Direction
- did not show unfavorable effecte0
VitisNot reportedComparator
Organisms pictured · Representative pictures of the matched species, not figures from the paper.
Verbatim
t0“grapevine”
e0“No application of nitrogen from December to the middle of April did not show unfavorable effect on vine growth and yield”
Claim · model-written summary
Nitrogen omission from mid-April onward decreased grapevine yield.
- Treatment
- lack of nitrogen during any period from the middle of April and later one0
- Outcome
- yielde0
- Direction
- decreasede0
Not reportedComparator
Organisms pictured · Representative pictures of the matched species, not figures from the paper.
Verbatim
t0“grapevine”
e0“lack of nitrogen during any period from the middle of April and later on decreased the yield”
Claim · model-written summary
Nitrogen omission after August accelerated berry coloration.
Not reportedComparator
Organisms pictured · Representative pictures of the matched species, not figures from the paper.
Verbatim
t0“grapevine”
e0“No application of nitrogen after August (when berries began to color) forced coloration of berries”
Claim · model-written summary
Nitrogen omission after August had no effect on berry quality.
Not reportedComparator
Organisms pictured · Representative pictures of the matched species, not figures from the paper.
Verbatim
t0“grapevine”
e0“No application of nitrogen after August (when berries began to color) forced coloration of berries, but had no effect on their quality”
Claim · model-written summary
Delaying phosphorus application after mid-March decreased yield.
Not reportedComparator
Organisms pictured · Representative pictures of the matched species, not figures from the paper.
Verbatim
t0“grapevine”
e0“Phosphorus was necessary for vine growth and yield from the middle of March (when sap began to flow) on, and its delayed application after that time decreased the yield”
Claim · model-written summary
Phosphorus omission from September to mid-March had no unfavorable effect.
- Treatment
- No application of phosphorus from September to the middle of Marche0
- Outcome
- unfavorable effecte0
- Direction
- no unfavorable effecte0
Not reportedComparator
Organisms pictured · Representative pictures of the matched species, not figures from the paper.
Verbatim
t0“grapevine”
e0“No application of phosphorus from September to the middle of March or after late July (when seed was hardening) showed no unfavorable effect”
Claim · model-written summary
Phosphorus omission after late July had no unfavorable effect.
Not reportedComparator
Organisms pictured · Representative pictures of the matched species, not figures from the paper.
Verbatim
t0“grapevine”
e0“No application of phosphorus from September to the middle of March or after late July (when seed was hardening) showed no unfavorable effect”
Claim · model-written summary
Potassium omission from December to mid-April had no unfavorable effect on growth and berry quality.
- Treatment
- No application of potassium from December to the middle of Aprile0
- Outcome
- vine growth and quality of berriese0
- Direction
- no unfavorable effectse0
Not reportedComparator
Organisms pictured · Representative pictures of the matched species, not figures from the paper.
Verbatim
t0“grapevine”
e0“No application of potassium from December to the middle of April and of calcium from December to the middle of May showed no unfavorable effects on vine growth and quality of berries”
Claim · model-written summary
Calcium omission from December to mid-May had no unfavorable effect on growth and berry quality.
- Treatment
- calcium from December to the middle of Maye0
- Outcome
- vine growth and quality of berriese0
- Direction
- no unfavorable effectse0
Not reportedComparator
Organisms pictured · Representative pictures of the matched species, not figures from the paper.
Verbatim
t0“grapevine”
e0“No application of potassium from December to the middle of April and of calcium from December to the middle of May showed no unfavorable effects on vine growth and quality of berries”
Claim · model-written summary
Potassium omission outside December to mid-April decreased yield.
Not reportedComparator
Organisms pictured · Representative pictures of the matched species, not figures from the paper.
Verbatim
t0“grapevine”
e0“lack of potassium and calcium during any other period excepting the above mentioned decreased the yield”
Claim · model-written summary
Calcium omission outside December to mid-May decreased yield.
Not reportedComparator
Organisms pictured · Representative pictures of the matched species, not figures from the paper.
Verbatim
t0“grapevine”
e0“lack of potassium and calcium during any other period excepting the above mentioned decreased the yield”
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See all 11 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.