Abstract
The influence of various c oncentrations of K, nitrogen sources, and inoculation with root-knot nematode Meloidogyne javanica were evaluated in tomato plants. Increased potassium concentration increased top and root fresh weights of intact plants and fresh weights of excised roots. Nitrate-fertilized plants weighed more than plants receiving ammonium independent of the K level in the medium. Nematode counts on roots were not affected by nutritional differences in intact or excised roots. In intact roots a high percentage of males was recorded at low K levels, whereas in excised roots the proportion of males in the population rose as the K levels increased. Inoculated intact roots accumulated K when the level of potassium supply was low; infected excised roots contained less K than did nematode-free roots.
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Claims 8
Claim · model-written summary
Higher potassium increased fresh weights of intact tomato tops and roots.
- Taxon
- tomato plants
Solanum lycopersicume1 - Treatment
- Increased potassium concentratione0
- Outcome
- top and root fresh weights of intact plantse0
- Direction
- increasede0
Not reportedComparator
Organisms pictured · Representative pictures of the matched species, not figures from the paper.
Verbatim
e0“Increased potassium concentration increased top and root fresh weights of intact plants and fresh weights of excised roots.”
t0“Root-knot Nematode Meloidogyne javanica”
e1“were evaluated in tomato plants.”
Claim · model-written summary
Higher potassium increased fresh weight of excised tomato roots.
- Taxon
- tomato plantsSolanum lycopersicume1
- Treatment
- Increased potassium concentratione0
- Outcome
- fresh weights of excised rootse0
- Direction
- increasede0
Not reportedComparator
Organisms pictured · Representative pictures of the matched species, not figures from the paper.
Verbatim
e0“Increased potassium concentration increased top and root fresh weights of intact plants and fresh weights of excised roots.”
e1“were evaluated in tomato plants.”
Claim · model-written summary
Nitrate fertilized tomato plants weighed more than ammonium fed plants at all potassium levels.
- Taxon
- tomato plantsSolanum lycopersicume1
- Treatment
- Nitrate-fertilizede0
- Outcome
- weighede0
- Direction
- more thane0
- Qualifier
- independent of the K level in the mediume0
- Comparator
- plants receiving ammoniume0
Organisms pictured · Representative pictures of the matched species, not figures from the paper.
Verbatim
e0“Nitrate-fertilized plants weighed more than plants receiving ammonium independent of the K level in the medium.”
e1“were evaluated in tomato plants.”
Claim · model-written summary
Nutritional differences did not affect nematode counts on intact or excised tomato roots.
- Taxon
- tomato plantsSolanum lycopersicume1
- Treatment
- nutritional differencese0
- Interactor
- Meloidogyne javanicaMeloidogyne javanicat0pathogen
- Outcome
- Nematode counts on rootse0
- Direction
- not affectede0
Not reportedComparator
Organisms pictured · Representative pictures of the matched species, not figures from the paper.
Verbatim
e0“Nematode counts on roots were not affected by nutritional differences in intact or excised roots.”
e1“were evaluated in tomato plants.”
t0“Root-knot Nematode Meloidogyne javanica”
Claim · model-written summary
Intact tomato roots had a high percentage of male nematodes at low potassium.
- Taxon
- tomato plantsSolanum lycopersicume1
- Treatment
- low K levelse0
- Interactor
- Meloidogyne javanicaMeloidogyne javanicat0pathogen
- Outcome
- percentage of malese0
- Direction
- highe0
Organisms pictured · Representative pictures of the matched species, not figures from the paper.
Verbatim
e0“In intact roots a high percentage of males was recorded at low K levels”
e1“were evaluated in tomato plants.”
t0“Root-knot Nematode Meloidogyne javanica”
Claim · model-written summary
Male nematode proportion on excised tomato roots rose as potassium levels increased.
- Taxon
- tomato plantsSolanum lycopersicume1
- Treatment
- K levelse0
- Interactor
- Meloidogyne javanicaMeloidogyne javanicat0pathogen
- Outcome
- proportion of males in the populatione0
- Direction
- rosee0
Organisms pictured · Representative pictures of the matched species, not figures from the paper.
Verbatim
e0“in excised roots the proportion of males in the population rose as the K levels increased.”
e1“were evaluated in tomato plants.”
t0“Root-knot Nematode Meloidogyne javanica”
Claim · model-written summary
Inoculated intact tomato roots accumulated potassium when its supply was low.
- Taxon
- tomato plantsSolanum lycopersicume1
- Treatment
- Inoculatede0
- Interactor
- Meloidogyne javanicaMeloidogyne javanicat0pathogen
- Outcome
- accumulated Ke0
- Direction
- accumulatede0
- Qualifier
- when the level of potassium supply was lowe0
Not reportedComparator
Organisms pictured · Representative pictures of the matched species, not figures from the paper.
Verbatim
e0“Inoculated intact roots accumulated K when the level of potassium supply was low”
e1“were evaluated in tomato plants.”
t0“Root-knot Nematode Meloidogyne javanica”
Claim · model-written summary
Infected excised tomato roots contained less potassium than nematode free roots.
- Taxon
- tomato plantsSolanum lycopersicume1
- Treatment
- infectede0
- Interactor
- Meloidogyne javanicaMeloidogyne javanicat0pathogen
- Outcome
- Ke0
- Direction
- lesse0
- Comparator
- nematode-free rootse0
Organisms pictured · Representative pictures of the matched species, not figures from the paper.
Verbatim
e0“infected excised roots contained less K than did nematode-free roots.”
e1“were evaluated in tomato plants.”
t0“Root-knot Nematode Meloidogyne javanica”
The same questions in other papers
potassium · growth · Solanum lycopersicum (tomato)Results differ
33 papers in the same direction as this paper · 13 in the opposite direction
- no effect
- no effect
- no effect
43 papers more in this group
See all 47 papers →infection · Meloidogyne javanica · Solanum lycopersicum (tomato)Results agree
5 papers in the same direction as this paper
- negative
- negative
- no effect
2 papers more in this group
See all 6 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.