Abstract
`Classic' eggplant (Solanum melongena L.) responses to K fertilization were evaluated in Spring and Fall 1991 at Live Oak, Fla., on soils testing low in Mehlich-1 extractable K. Total season yield leveled off at 51.1 t·ha -1 with 94 kg K/ha fertilization in spring and at 53.3 t·ha -1 with 60 kg K/ha in fall. Critical K concentrations (in grams per kilogram) in whole leaves were ≈45 at first flowering, 35 at early fruiting, 30 during harvest, and 28 at the end of seven harvests. Fresh petiole-sap K critical concentrations (in milligrams per liter) were ≈4500 to 5000 before harvest and 4000 to 4500 during harvest. Less than 3500 mg K/liter in fresh sap indicated K deficiency in fruiting plants. The Mehlich-1 soil extractant procedure predicted similar responses at the two sites; however, yield responses showed that the two sites differed in fertilization requirements. Fertilizer recommendations for K at both sites exceeded eggplant K requirements.
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Claims 12
Claim · model-written summary
Spring eggplant yield leveled at 51.1 t·ha -1 with 94 kg K/ha.
- Taxon
- Eggplant
Solanum melongenat0 - Treatment
- 94 kg K/ha fertilizatione0
- Outcome
- Total season yielde0
- Direction
- leveled offe0
- Value
- 51.1 t·ha -1e0
- Qualifier
- springe0
Not reportedComparator
Organisms pictured · Representative pictures of the matched species, not figures from the paper.
Verbatim
e0“Total season yield leveled off at 51.1 t·ha -1 with 94 kg K/ha fertilization in spring”
t0“Eggplant”
Claim · model-written summary
Fall eggplant yield leveled at 53.3 t·ha -1 with 60 kg K/ha.
- Taxon
- EggplantSolanum melongenat0
- Treatment
- 60 kg K/hae0
- Outcome
- yielde0
- Direction
- leveled offe0
- Value
- 53.3 t·ha -1e0
- Qualifier
- falle0
Not reportedComparator
Organisms pictured · Representative pictures of the matched species, not figures from the paper.
Verbatim
e0“Total season yield leveled off at 51.1 t·ha -1 with 94 kg K/ha fertilization in spring and at 53.3 t·ha -1 with 60 kg K/ha in fall”
t0“Eggplant”
Claim · model-written summary
Critical whole leaf potassium concentration was approximately 45 at first flowering.
- Taxon
- EggplantSolanum melongenat0
- Organ / stage
- whole leavese0
- Outcome
- Critical K concentrationse0
- Value
- ≈45e0
- Qualifier
- at first floweringe0
Organisms pictured · Representative pictures of the matched species, not figures from the paper.
Verbatim
e0“Critical K concentrations (in grams per kilogram) in whole leaves were ≈45 at first flowering”
t0“Eggplant”
Claim · model-written summary
Critical whole leaf potassium concentration was 35 at early fruiting.
- Taxon
- EggplantSolanum melongenat0
- Outcome
- Critical K concentrationse0
- Value
- 35e0
- Qualifier
- at early fruitinge0
Organisms pictured · Representative pictures of the matched species, not figures from the paper.
Verbatim
e0“Critical K concentrations (in grams per kilogram) in whole leaves were ≈45 at first flowering, 35 at early fruiting”
t0“Eggplant”
Claim · model-written summary
Critical whole leaf potassium concentration was 30 during harvest.
- Taxon
- EggplantSolanum melongenat0
- Outcome
- Critical K concentrationse0
- Value
- 30e0
- Qualifier
- during harveste0
Organisms pictured · Representative pictures of the matched species, not figures from the paper.
Verbatim
e0“Critical K concentrations (in grams per kilogram) in whole leaves were ≈45 at first flowering, 35 at early fruiting, 30 during harvest”
t0“Eggplant”
Claim · model-written summary
Critical whole leaf potassium concentration was 28 at the end of seven harvests.
- Taxon
- EggplantSolanum melongenat0
- Outcome
- Critical K concentrationse0
- Value
- 28e0
- Qualifier
- at the end of seven harvestse0
Organisms pictured · Representative pictures of the matched species, not figures from the paper.
Verbatim
e0“Critical K concentrations (in grams per kilogram) in whole leaves were ≈45 at first flowering, 35 at early fruiting, 30 during harvest, and 28 at the end of seven harvests”
t0“Eggplant”
Claim · model-written summary
Critical petiole sap potassium was approximately 4500 to 5000 before harvest.
- Taxon
- EggplantSolanum melongenat0
- Outcome
- Fresh petiole-sap K critical concentrationse0
- Value
- ≈4500 to 5000e0
- Qualifier
- before harveste0
Organisms pictured · Representative pictures of the matched species, not figures from the paper.
Verbatim
e0“Fresh petiole-sap K critical concentrations (in milligrams per liter) were ≈4500 to 5000 before harvest”
t0“Eggplant”
Claim · model-written summary
Critical petiole sap potassium was 4000 to 4500 during harvest.
- Taxon
- EggplantSolanum melongenat0
- Outcome
- Fresh petiole-sap K critical concentrationse0
- Value
- 4000 to 4500e0
- Qualifier
- during harveste0
Organisms pictured · Representative pictures of the matched species, not figures from the paper.
Verbatim
e0“Fresh petiole-sap K critical concentrations (in milligrams per liter) were ≈4500 to 5000 before harvest and 4000 to 4500 during harvest”
t0“Eggplant”
Claim · model-written summary
Sap potassium below 3500 mg K/liter indicated deficiency in fruiting eggplants.
- Taxon
- EggplantSolanum melongenat0
- Outcome
- K deficiencye0
- Value
- 3500 mg K/litere0
- Qualifier
- fruiting plantse0
Organisms pictured · Representative pictures of the matched species, not figures from the paper.
Verbatim
e0“Less than 3500 mg K/liter in fresh sap indicated K deficiency in fruiting plants”
t0“Eggplant”
Claim · model-written summary
Mehlich 1 soil extraction predicted similar responses at the two sites.
- Taxon
- EggplantSolanum melongenat0
- Outcome
- similar responsese0
- Comparator
- two sitese0
Organisms pictured · Representative pictures of the matched species, not figures from the paper.
Verbatim
e0“The Mehlich-1 soil extractant procedure predicted similar responses at the two sites”
t0“Eggplant”
Claim · model-written summary
Yield responses showed different fertilization requirements between the sites.
- Taxon
- EggplantSolanum melongenat0
- Outcome
- fertilization requirementse0
- Comparator
- two sitese0
Organisms pictured · Representative pictures of the matched species, not figures from the paper.
Verbatim
e0“yield responses showed that the two sites differed in fertilization requirements”
t0“Eggplant”
Claim · model-written summary
Potassium fertilizer recommendations exceeded eggplant requirements at both sites.
- Taxon
- eggplantSolanum melongenae0
- Outcome
- K requirementse0
- Direction
- exceedede0
- Qualifier
- both sitese0
Organisms pictured · Representative pictures of the matched species, not figures from the paper.
Verbatim
e0“Fertilizer recommendations for K at both sites exceeded eggplant K requirements”
The same questions in other papers
fertilization · yield · Solanum melongena (eggplant)Positive and negative results
193 papers in the same direction as this paper · 23 in the opposite direction · 2 reporting no difference from an alternative
- negative
- positive
- negative
215 papers more in this group
See all 219 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.