Abstract
Tomato ( Lycopersicon esculentum Mill.) was grown with drip irrigation on an Arredondo fine sand and on an Orangeburg fine sandy loam to evaluate the effect of N and K time of application on petiole sap, leaf-N and -K concentrations, fruit yield, and to determine N and K sufficiency ranges in leaf tissue. On the sandy soil, N—K at 196-112 kg·ha -1 were applied 0%, 40%, or 100% preplant with the remainder applied in 6 or 12 equal or in variable applications in 12 weeks. With the variable application rate, most nutrients were applied between weeks 5 and 10 after transplanting. On the sandy loam soil that tested high in K, only N (196 kg·ha -1 ) was applied as above. Petiole sap K concentration declined during the season, but was not greatly affected by treatment. Petiole NO 3 -N concentrations decreased during the season from 1100 to 200 mg·L -1 , and the decrease was greater with preplant N treatments. On the sandy soil, marketable fruit yields were lowest with 100% preplant, intermediate with 100% drip applied (no preplant N), and highest with 40% preplant and 60% drip applied. With 100% drip applied, yields were higher with 12 even applications than with either six even weekly applications or with 12 variable N and K applications. With 40% preplant, timing of application had little effect on yield. On the sandy loam soil in 1993, yields were highest with 100% preplant, intermediate with 40% preplant and 60% drip applied, and lowest with all N drip applied. In 1994 when excessive rains occurred, yields were similar with all preplant and with split N applications. Petiole N concentration was correlated with tomato yield, especially at 10 weeks after transplanting. The best correlation between sap-N and total yields occurred between 4 and 6 weeks at Gainesville and between 4 and 10 weeks at Quincy.
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Claims 12
Claim · model-written summary
Petiole sap K concentration declined during the season and was not greatly affected by treatment.
- Taxon
- Tomato
Solanum lycopersicumt0 - Outcome
- Petiole sap K concentratione1
- Direction
- declinede1
- Qualifier
- not greatly affected by treatmente1
Organisms pictured · Representative pictures of the matched species, not figures from the paper.
Verbatim
t0“Drip-irrigated Tomato Yield”
e1“Petiole sap K concentration declined during the season, but was not greatly affected by treatment”
Claim · model-written summary
Petiole NO3-N concentrations decreased during the season from 1100 to 200 mg/L.
- Taxon
- TomatoSolanum lycopersicumt0
- Outcome
- Petiole NO 3 -N concentrationse2
- Direction
- decreasede2
- Value
- 1100 to 200 mg·L -1e2
Organisms pictured · Representative pictures of the matched species, not figures from the paper.
Verbatim
t0“Drip-irrigated Tomato Yield”
e2“Petiole NO 3 -N concentrations decreased during the season from 1100 to 200 mg·L -1”
Claim · model-written summary
On sandy soil, marketable fruit yield was lowest with 100% preplant N.
- Taxon
- TomatoSolanum lycopersicumt0
- Treatment
- 100% preplante3
- Outcome
- marketable fruit yieldse3
- Direction
- loweste3
- Setting
- sandy soile3
Not reportedComparator
Organisms pictured · Representative pictures of the matched species, not figures from the paper.
Verbatim
t0“Drip-irrigated Tomato Yield”
e3“On the sandy soil, marketable fruit yields were lowest with 100% preplant, intermediate with 100% drip applied (no preplant N), and highest with 40% preplant and 60% drip applied”
Claim · model-written summary
On sandy soil, marketable fruit yield with 100% drip-applied N was intermediate.
- Taxon
- TomatoSolanum lycopersicumt0
- Treatment
- 100% drip applied (no preplant N)e3
- Outcome
- marketable fruit yieldse3
- Direction
- intermediatee3
- Setting
- sandy soile3
Not reportedComparator
Organisms pictured · Representative pictures of the matched species, not figures from the paper.
Verbatim
t0“Drip-irrigated Tomato Yield”
e3“On the sandy soil, marketable fruit yields were lowest with 100% preplant, intermediate with 100% drip applied (no preplant N), and highest with 40% preplant and 60% drip applied”
Claim · model-written summary
On sandy soil, marketable fruit yield was highest with 40% preplant and 60% drip-applied N.
- Taxon
- TomatoSolanum lycopersicumt0
- Treatment
- 40% preplant and 60% drip appliede3
- Outcome
- marketable fruit yieldse3
- Direction
- higheste3
- Setting
- sandy soile3
Not reportedComparator
Organisms pictured · Representative pictures of the matched species, not figures from the paper.
Verbatim
t0“Drip-irrigated Tomato Yield”
e3“On the sandy soil, marketable fruit yields were lowest with 100% preplant, intermediate with 100% drip applied (no preplant N), and highest with 40% preplant and 60% drip applied”
Claim · model-written summary
With 100% drip-applied N, 12 even applications gave higher yield than six even weekly applications.
- Taxon
- TomatoSolanum lycopersicumt0
- Treatment
- 12 even applicationse4
- Outcome
- yieldse4
- Direction
- highere4
- Comparator
- six even weekly applicationse4
Organisms pictured · Representative pictures of the matched species, not figures from the paper.
Verbatim
t0“Drip-irrigated Tomato Yield”
e4“With 100% drip applied, yields were higher with 12 even applications than with either six even weekly applications or with 12 variable N and K applications”
Claim · model-written summary
With 40% preplant N, timing of application had little effect on yield.
- Taxon
- TomatoSolanum lycopersicumt0
- Treatment
- 40% preplante5
- Outcome
- yielde5
- Direction
- little effecte5
Not reportedComparator
Organisms pictured · Representative pictures of the matched species, not figures from the paper.
Verbatim
t0“Drip-irrigated Tomato Yield”
e5“With 40% preplant, timing of application had little effect on yield”
Claim · model-written summary
On sandy loam soil in 1993, yields were highest with 100% preplant N.
- Taxon
- TomatoSolanum lycopersicumt0
- Treatment
- 100% preplante6
- Outcome
- yieldse6
- Direction
- higheste6
- Setting
- sandy loam soil in 1993e6
Not reportedComparator
Organisms pictured · Representative pictures of the matched species, not figures from the paper.
Verbatim
t0“Drip-irrigated Tomato Yield”
e6“On the sandy loam soil in 1993, yields were highest with 100% preplant”
Claim · model-written summary
In 1994 with excessive rain, yields were similar with all-preplant and split N applications.
- Taxon
- TomatoSolanum lycopersicumt0
- Treatment
- all preplante7
- Outcome
- yieldse7
- Direction
- similare7
- Comparator
- split N applicationse7
- Setting
- In 1994 when excessive rains occurrede7
Organisms pictured · Representative pictures of the matched species, not figures from the paper.
Verbatim
t0“Drip-irrigated Tomato Yield”
e7“In 1994 when excessive rains occurred, yields were similar with all preplant and with split N applications”
Claim · model-written summary
Petiole N concentration was correlated with tomato yield, especially at 10 weeks after transplanting.
- Taxon
- TomatoSolanum lycopersicumt0
- Organ / stage
- Petiolee1
- Outcome
- tomato yielde1
- Qualifier
- especially at 10 weeks after transplantinge1
Not reportedDirection
Organisms pictured · Representative pictures of the matched species, not figures from the paper.
Verbatim
t0“Drip-irrigated Tomato Yield”
e1“Petiole N concentration was correlated with tomato yield, especially at 10 weeks after transplanting”
Claim · model-written summary
The best correlation between sap-N and total yield at Gainesville occurred between 4 and 6 weeks.
- Taxon
- TomatoSolanum lycopersicumt0
- Outcome
- sap-N and total yieldse1
- Qualifier
- 4 and 6 weekse1
- Setting
- Gainesvillee1
Not reportedDirection
Organisms pictured · Representative pictures of the matched species, not figures from the paper.
Verbatim
t0“Drip-irrigated Tomato Yield”
e1“The best correlation between sap-N and total yields occurred between 4 and 6 weeks at Gainesville and between 4 and 10 weeks at Quincy”
Claim · model-written summary
The best correlation between sap-N and total yield at Quincy occurred between 4 and 10 weeks.
- Taxon
- TomatoSolanum lycopersicumt0
- Outcome
- sap-N and total yieldse1
- Qualifier
- 4 and 10 weekse1
- Setting
- Quincye1
Not reportedDirection
Organisms pictured · Representative pictures of the matched species, not figures from the paper.
Verbatim
t0“Drip-irrigated Tomato Yield”
e1“The best correlation between sap-N and total yields occurred between 4 and 6 weeks at Gainesville and between 4 and 10 weeks at Quincy”
The same questions in other papers
irrigation · quality: postharvest · Solanum lycopersicum (tomato)Positive and negative results
38 papers in the same direction as this paper · 20 in the opposite direction
- negative
- no effect
- no effect
55 papers more in this group
See all 59 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.