Abstract
SummaryTomato plants were grown at four humidities (vapour pressure deficits of 0.15,0.25,0.43 and 0.65 kPa) that were maintained continuously for four weeks. The Ca and Mg contents of the upper leaves declined progressively with increasing humidity. In the main experiment, a high (0.21 kPa) and low humidity (0.47-0.55 kPa) during the day were tested in factorial combination with a high (0.16 kPa) and low humidity (0.45-0.50 kPa) at night. Leaves were divided into terminal and basal leaflets, the rest of the lamina and the petiole. High humidity at night reduced the Ca, Mg, P and K contents (%) of all portions of the leaf lamina whilst high humidity during the day reduced only the Ca and K contents. The N content was not affected by humidity. The Ca and K contents of the petioles were reduced by high humidity during the day and at night. The changes in the Ca, Mg and K contents of the tissue in response to high humidity were greater in the terminal leaflet than in the basal leaflet or in the rest of the lamina, suggesting that the terminal leaflet was suitable for monitoring the nutrient status of the crop. Yellowing of the terminal leaflet at high humidity appeared to be associated with deficiencies of both Ca and K rather than with Ca only.
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Claims 7
Claim · model-written summary
Increasing humidity progressively reduced upper-leaf Ca and Mg.
- Taxon
- Tomato
Solanum lycopersicumt0 - Treatment
- increasing humiditye0
- Outcome
- Ca and Mg contents of the upper leavese0
- Direction
- declinede0
Organisms pictured · Representative pictures of the matched species, not figures from the paper.
Verbatim
e0“The Ca and Mg contents of the upper leaves declined progressively with increasing humidity.”
t0“Tomato plants”
Claim · model-written summary
High night humidity reduced Ca, Mg, P and K contents of leaf lamina.
- Taxon
- tomatoSolanum lycopersicumt0
- Treatment
- High humidity at nighte0
- Outcome
- Ca, Mg, P and K contents (%) of all portions of the leaf laminae0
- Direction
- reducede0
Not reportedComparator
Organisms pictured · Representative pictures of the matched species, not figures from the paper.
Verbatim
e0“High humidity at night reduced the Ca, Mg, P and K contents (%) of all portions of the leaf lamina”
t0“tomato (Lycopersicon esculentum)”
Claim · model-written summary
High daytime humidity reduced Ca and K contents of leaf lamina.
- Taxon
- tomatoSolanum lycopersicumt0
- Treatment
- high humidity during the daye0
- Outcome
- Ca and K contentse0
- Direction
- reducede0
Not reportedComparator
Organisms pictured · Representative pictures of the matched species, not figures from the paper.
Verbatim
e0“high humidity during the day reduced only the Ca and K contents.”
t0“tomato (Lycopersicon esculentum)”
Claim · model-written summary
Humidity did not affect N content.
- Taxon
- tomatoSolanum lycopersicumt0
- Treatment
- humiditye0
- Outcome
- N contente0
- Direction
- not affectede0
Not reportedComparator
Organisms pictured · Representative pictures of the matched species, not figures from the paper.
Verbatim
e0“The N content was not affected by humidity.”
t0“tomato (Lycopersicon esculentum)”
Claim · model-written summary
High day and night humidity reduced petiole Ca and K contents.
- Taxon
- tomatoSolanum lycopersicumt0
- Treatment
- high humidity during the day and at nighte0
- Outcome
- Ca and K contents of the petiolese0
- Direction
- reducede0
Not reportedComparator
Organisms pictured · Representative pictures of the matched species, not figures from the paper.
Verbatim
e0“The Ca and K contents of the petioles were reduced by high humidity during the day and at night.”
t0“tomato (Lycopersicon esculentum)”
Claim · model-written summary
High humidity changed Ca, Mg and K more in terminal than other leaflets.
- Taxon
- tomatoSolanum lycopersicumt0
- Organ / stage
- terminal leaflete0
- Treatment
- high humiditye0
- Outcome
- changes in the Ca, Mg and K contentse0
- Direction
- greatere0
- Comparator
- basal leaflet or in the rest of the laminae0
Organisms pictured · Representative pictures of the matched species, not figures from the paper.
Verbatim
e0“The changes in the Ca, Mg and K contents of the tissue in response to high humidity were greater in the terminal leaflet than in the basal leaflet or in the rest of the lamina”
t0“tomato (Lycopersicon esculentum)”
Claim · model-written summary
Terminal leaflet yellowing at high humidity appeared linked to both Ca and K deficiency.
- Taxon
- tomatoSolanum lycopersicumt0
- Treatment
- high humiditye0
- Outcome
- Yellowing of the terminal leaflete0
- Qualifier
- appeared to be associated with deficiencies of both Ca and K rather than with Ca onlye0
Not reportedDirection
Organisms pictured · Representative pictures of the matched species, not figures from the paper.
Verbatim
e0“Yellowing of the terminal leaflet at high humidity appeared to be associated with deficiencies of both Ca and K rather than with Ca only.”
t0“tomato (Lycopersicon esculentum)”
The same questions in other papers
humidity · nutrient: content · Solanum lycopersicum (tomato)Positive and negative results
7 papers in the same direction as this paper · 5 in the opposite direction
- positive
- negative
- negative
9 papers more in this group
See all 13 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.