Abstract
Irrigation dynamics and the response of greenhouse tomato (Lycopersicon esculentum Mill. 'Caruso') to different irrigation management treatments (nutrient solution EC and irrigation matric potential setpoints) were examined in plants grown in peat-based substrate during either the spring or fall of 1989. Two nutrient solutions with differing electrical conductivity (EC of 1.5 and 3.0 dS m −1 ) were automatically applied to plants until saturation at one of two substrate matric potential (SMP) setpoints (−6.5 or −4.5 kPa). Yield measurements indicated no significant effects due to different SMP setpoints but spring total yield and average marketable fruit weight were higher for low-EC solution treatments. Blossom-end rot was slightly higher in the fall under the highest EC treatment. Foliar mineral concentration analysis of spring-grown plants indicated increases in nitrogen, potassium, zinc, and manganese, and a decrease in calcium in plants receiving high-EC solution. The EC of peat substrates was also found to be higher than applied solutions indicating an overall accumulation of salts within the peat under different irrigation regimes, even with periodic overwatering. This study indicates that increasing nutrient solution EC from 1.5 to 3.0 dS m −1 can negatively affect the production and nutritional status of tomato plants more than changing irrigation setpoints from −4.5 to −6.5 kPa. Key words: Electrical conductivity, fruit quality, peat, tensiometers, matric potential
Abstract from the paper’s OpenAlex record, shown for indexing and research. Copyright remains with the authors or the publisher. Read at the source ↗
The text the model read, with the source record’s inline markup (italics, sub- and superscripts) rendered and its character entities decoded; quote offsets refer to the raw text.
Claims 8
Claim · model-written summary
Changing substrate matric potential setpoints did not significantly affect tomato yield.
- Taxon
- tomato
Solanum lycopersicumt0 - Treatment
- different SMP setpointse0
- Outcome
- Yielde0
- Direction
- no significant effectse0
Not reportedComparator
Organisms pictured · Representative pictures of the matched species, not figures from the paper.
Verbatim
e0“Yield measurements indicated no significant effects due to different SMP setpoints”
t0“Impact of irrigation management of greenhouse tomato: Yield, nutrition, and salinity of peat substrate”
t1“Foliar mineral concentration analysis of spring-grown plants indicated increases in nitrogen, potassium, zinc, and manganese, and a decrease in calcium in plants receiving high-EC solution.”
Claim · model-written summary
Low conductivity solution increased spring total tomato yield.
- Taxon
- tomatoSolanum lycopersicumt0
- Treatment
- low-EC solution treatmentse0
- Outcome
- spring total yielde0
- Direction
- highere0
- Comparator
- high-EC solutiont1
Organisms pictured · Representative pictures of the matched species, not figures from the paper.
Verbatim
e0“spring total yield and average marketable fruit weight were higher for low-EC solution treatments”
t0“Impact of irrigation management of greenhouse tomato: Yield, nutrition, and salinity of peat substrate”
t1“Foliar mineral concentration analysis of spring-grown plants indicated increases in nitrogen, potassium, zinc, and manganese, and a decrease in calcium in plants receiving high-EC solution.”
Claim · model-written summary
Low conductivity solution increased average marketable fruit weight in spring.
- Taxon
- tomatoSolanum lycopersicumt0
- Treatment
- low-EC solution treatmentse0
- Outcome
- average marketable fruit weighte0
- Direction
- highere0
- Comparator
- high-EC solutiont1
Organisms pictured · Representative pictures of the matched species, not figures from the paper.
Verbatim
e0“spring total yield and average marketable fruit weight were higher for low-EC solution treatments”
t0“Impact of irrigation management of greenhouse tomato: Yield, nutrition, and salinity of peat substrate”
t1“Foliar mineral concentration analysis of spring-grown plants indicated increases in nitrogen, potassium, zinc, and manganese, and a decrease in calcium in plants receiving high-EC solution.”
Claim · model-written summary
Blossom-end rot was slightly higher in fall under the highest conductivity treatment.
- Taxon
- tomatoSolanum lycopersicumt0
- Treatment
- highest EC treatmente0
- Outcome
- Blossom-end rote0
- Direction
- highere0
- Qualifier
- in the falle0
Not reportedComparator
Organisms pictured · Representative pictures of the matched species, not figures from the paper.
Verbatim
e0“Blossom-end rot was slightly higher in the fall under the highest EC treatment.”
t0“Impact of irrigation management of greenhouse tomato: Yield, nutrition, and salinity of peat substrate”
t1“Foliar mineral concentration analysis of spring-grown plants indicated increases in nitrogen, potassium, zinc, and manganese, and a decrease in calcium in plants receiving high-EC solution.”
Claim · model-written summary
High conductivity solution increased foliar nitrogen, potassium and zinc concentrations in spring tomato.
- Taxon
- tomatoSolanum lycopersicumt0
- Organ / stage
- Foliare0
- Treatment
- high-EC solutione0
- Outcome
- nitrogen, potassium, zince0
- Direction
- increasese0
Not reportedComparator
Organisms pictured · Representative pictures of the matched species, not figures from the paper.
Verbatim
e0“Foliar mineral concentration analysis of spring-grown plants indicated increases in nitrogen, potassium, zinc, and manganese, and a decrease in calcium in plants receiving high-EC solution.”
t0“Impact of irrigation management of greenhouse tomato: Yield, nutrition, and salinity of peat substrate”
t1“Foliar mineral concentration analysis of spring-grown plants indicated increases in nitrogen, potassium, zinc, and manganese, and a decrease in calcium in plants receiving high-EC solution.”
Claim · model-written summary
High conductivity solution increased foliar manganese concentration in spring tomato.
- Taxon
- tomatoSolanum lycopersicumt0
- Organ / stage
- Foliare0
- Treatment
- high-EC solutione0
- Outcome
- manganesee0
- Direction
- increasese0
Not reportedComparator
Organisms pictured · Representative pictures of the matched species, not figures from the paper.
Verbatim
e0“Foliar mineral concentration analysis of spring-grown plants indicated increases in nitrogen, potassium, zinc, and manganese, and a decrease in calcium in plants receiving high-EC solution.”
t0“Impact of irrigation management of greenhouse tomato: Yield, nutrition, and salinity of peat substrate”
t1“Foliar mineral concentration analysis of spring-grown plants indicated increases in nitrogen, potassium, zinc, and manganese, and a decrease in calcium in plants receiving high-EC solution.”
Claim · model-written summary
High conductivity solution decreased foliar calcium concentration in spring tomato.
- Taxon
- tomatoSolanum lycopersicumt0
- Treatment
- high-EC solutione0
- Outcome
- calciume0
- Direction
- decreasee0
Not reportedComparator
Organisms pictured · Representative pictures of the matched species, not figures from the paper.
Verbatim
e0“a decrease in calcium in plants receiving high-EC solution”
t0“Impact of irrigation management of greenhouse tomato: Yield, nutrition, and salinity of peat substrate”
t1“Foliar mineral concentration analysis of spring-grown plants indicated increases in nitrogen, potassium, zinc, and manganese, and a decrease in calcium in plants receiving high-EC solution.”
Claim · model-written summary
Peat substrate conductivity exceeded that of applied solutions, indicating salt accumulation despite periodic overwatering.
- Taxon
- tomatoSolanum lycopersicumt0
- Outcome
- EC of peat substratese0
- Direction
- highere0
- Qualifier
- even with periodic overwateringe0
- Comparator
- applied solutionse0
Organisms pictured · Representative pictures of the matched species, not figures from the paper.
Verbatim
e0“The EC of peat substrates was also found to be higher than applied solutions indicating an overall accumulation of salts within the peat under different irrigation regimes, even with periodic overwatering.”
t0“Impact of irrigation management of greenhouse tomato: Yield, nutrition, and salinity of peat substrate”
t1“Foliar mineral concentration analysis of spring-grown plants indicated increases in nitrogen, potassium, zinc, and manganese, and a decrease in calcium in plants receiving high-EC solution.”
The same questions in other papers
growing medium · yield · Solanum lycopersicum (tomato)Positive and negative results
28 papers in the same direction as this paper · 112 in the opposite direction
- no effect
- positive
- positive
137 papers more in this group
See all 141 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.