Abstract
Abstract Tomato plants were grown in sand culture with NH4 or NO3 at 14, 56, or 112 ppm N in solution. Plants supplied with NH4 at 112 ppm N developed ammonium toxicity symptoms and produced one‐third the dry weight of NO3 fed plants. In contrast, plants receiving NH4 at 14 ppm N appeared normal and had dry weight slightly higher than with NO3 at the same concentration. As NH4 concentration increased from 14 to 112 ppm N, plant growth, K, Ca, and Mg contents decreased while soluble NH4, in the tissue was greatly increased.
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Claims 7
Claim · model-written summary
NH4 at 112 ppm N caused ammonium toxicity symptoms in tomato
- Taxon
- Tomato
Solanum lycopersicume1 - Treatment
- NH4 at 112 ppm Ne2
- Outcome
- ammonium toxicity symptomse2
- Setting
- sand culturee1
Not reportedComparatorDirection
Organisms pictured · Representative pictures of the matched species, not figures from the paper.
Verbatim
e1“Tomato plants were grown in sand culture with NH4 or NO3 at 14, 56, or 112 ppm N in solution”
e2“Plants supplied with NH4 at 112 ppm N developed ammonium toxicity symptoms and produced one‐third the dry weight of NO3 fed plants”
Claim · model-written summary
NH4 at 112 ppm N reduced tomato dry weight to one-third of that of NO3-fed plants
- Taxon
- TomatoSolanum lycopersicume1
- Treatment
- NH4 at 112 ppm Ne2
- Outcome
- dry weighte2
- Direction
- decreaseinferrede2
- Value
- one‐thirde2
- Comparator
- NO3 fed plantse2
- Setting
- sand culturee1
Organisms pictured · Representative pictures of the matched species, not figures from the paper.
Verbatim
e1“Tomato plants were grown in sand culture with NH4 or NO3 at 14, 56, or 112 ppm N in solution”
e2“Plants supplied with NH4 at 112 ppm N developed ammonium toxicity symptoms and produced one‐third the dry weight of NO3 fed plants”
Claim · model-written summary
NH4 at 14 ppm N gave slightly higher tomato dry weight than NO3 at the same concentration
- Taxon
- TomatoSolanum lycopersicume1
- Treatment
- NH4 at 14 ppm Ne3
- Outcome
- dry weighte3
- Direction
- highere3
- Comparator
- NO3 at the same concentratione3
- Setting
- sand culturee1
Organisms pictured · Representative pictures of the matched species, not figures from the paper.
Verbatim
e1“Tomato plants were grown in sand culture with NH4 or NO3 at 14, 56, or 112 ppm N in solution”
e3“In contrast, plants receiving NH4 at 14 ppm N appeared normal and had dry weight slightly higher than with NO3 at the same concentration”
Claim · model-written summary
Tomato plants supplied NH4 at 14 ppm N appeared normal
- Taxon
- TomatoSolanum lycopersicume1
- Treatment
- NH4 at 14 ppm Ne3
- Outcome
- appeared normale3
- Setting
- sand culturee1
Not reportedComparatorDirection
Organisms pictured · Representative pictures of the matched species, not figures from the paper.
Verbatim
e1“Tomato plants were grown in sand culture with NH4 or NO3 at 14, 56, or 112 ppm N in solution”
e3“In contrast, plants receiving NH4 at 14 ppm N appeared normal and had dry weight slightly higher than with NO3 at the same concentration”
Claim · model-written summary
Plant growth, K and Ca contents decreased as NH4 concentration increased from 14 to 112 ppm N
- Taxon
- TomatoSolanum lycopersicume1
- Treatment
- NH4 concentratione4
- Outcome
- plant growth, K, Cae4
- Direction
- decreasede4
- Qualifier
- from 14 to 112 ppm Ne4
- Setting
- sand culturee1
Not reportedComparator
Organisms pictured · Representative pictures of the matched species, not figures from the paper.
Verbatim
e1“Tomato plants were grown in sand culture with NH4 or NO3 at 14, 56, or 112 ppm N in solution”
e4“As NH4 concentration increased from 14 to 112 ppm N, plant growth, K, Ca, and Mg contents decreased while soluble NH4, in the tissue was greatly increased”
Claim · model-written summary
Mg contents of tomato decreased as NH4 concentration increased from 14 to 112 ppm N
- Taxon
- TomatoSolanum lycopersicume1
- Treatment
- NH4 concentratione4
- Outcome
- Mg contentse4
- Direction
- decreasede4
- Qualifier
- from 14 to 112 ppm Ne4
- Setting
- sand culturee1
Not reportedComparator
Organisms pictured · Representative pictures of the matched species, not figures from the paper.
Verbatim
e1“Tomato plants were grown in sand culture with NH4 or NO3 at 14, 56, or 112 ppm N in solution”
e4“As NH4 concentration increased from 14 to 112 ppm N, plant growth, K, Ca, and Mg contents decreased while soluble NH4, in the tissue was greatly increased”
Claim · model-written summary
Soluble NH4 in tomato tissue was greatly increased as NH4 concentration increased from 14 to 112 ppm N
- Taxon
- TomatoSolanum lycopersicume1
- Treatment
- NH4 concentratione4
- Outcome
- soluble NH4e4
- Direction
- greatly increasede4
- Qualifier
- from 14 to 112 ppm Ne4
- Setting
- sand culturee1
Not reportedComparator
Organisms pictured · Representative pictures of the matched species, not figures from the paper.
Verbatim
e1“Tomato plants were grown in sand culture with NH4 or NO3 at 14, 56, or 112 ppm N in solution”
e4“As NH4 concentration increased from 14 to 112 ppm N, plant growth, K, Ca, and Mg contents decreased while soluble NH4, in the tissue was greatly increased”