Abstract
Laboratory and green house experiments were conducted to ascertain the effect of exudates (from the vegetative parts of the weeds soaked in water) of different ages (36hrs, 72hrs and 120hrs) from three common weed species (namely, Chromolaena odorata, Ageratum conyzoides and Cyperus esculentus) on the seed germination and seedling growth of tomato (Lycopersicum esculentum). Tomato seeds were sown in petri-dishes on filter paper moistened with the treatments, and another set of tomato seeds were sown in soil, and treatments applied. The exudates of C. odorata had the greatest inhibitory effect on seed germination on filter paper, while those of A. conyzoides followed closely. C. esculentus had the least inhibitory effect. The weed exudates however did not have marked inhibition on seed germination and seedling growth in the soil medium; rather, they competed favorably with the Control. It was observed that the longer the soaking duration of the weeds in water, the less inhibitory their exudates were on seed germination, with water dilution. All the three weed species considered showed allelopathic effects, but especially C. odorata and A. conyzoides when in direct contact with tomato seeds
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Claims 5
Claim · model-written summary
Chromolaena odorata exudates had the greatest inhibition of tomato seed germination on filter paper.
- Taxon
- tomato
Solanum lycopersicume1 - Treatment
- exudates of C. odoratae0
- Interactor
- Chromolaena odorata
Chromolaena odoratae2weed - Outcome
- seed germinatione0
- Direction
- greatest inhibitory effecte0
Not reportedComparator
Organisms pictured · Representative pictures of the matched species, not figures from the paper.
Verbatim
e0“The exudates of C. odorata had the greatest inhibitory effect on seed germination on filter paper”
e1“tomato (Lycopersicum esculentum)”
e2“Chromolaena odorata”
Claim · model-written summary
Ageratum conyzoides exudates closely followed in inhibition of tomato seed germination.
- Taxon
- tomatoSolanum lycopersicume1
- Treatment
- A. conyzoidese0
- Interactor
- Ageratum conyzoides
Ageratum conyzoidese2weed - Outcome
- seed germinatione3
- Direction
- followed closelye0
- Comparator
- C. odoratae3
Organisms pictured · Representative pictures of the matched species, not figures from the paper.
Verbatim
e0“while those of A. conyzoides followed closely”
e1“tomato (Lycopersicum esculentum)”
e2“Ageratum conyzoides”
e3“The exudates of C. odorata had the greatest inhibitory effect on seed germination on filter paper”
Claim · model-written summary
Cyperus esculentus exudates had the least inhibitory effect on tomato seed germination.
- Taxon
- tomatoSolanum lycopersicume1
- Treatment
- C. esculentuse0
- Interactor
- Cyperus esculentus
Cyperus esculentuse2weed - Outcome
- seed germinatione3
- Direction
- least inhibitory effecte0
Not reportedComparator
Organisms pictured · Representative pictures of the matched species, not figures from the paper.
Verbatim
e0“C. esculentus had the least inhibitory effect”
e1“tomato (Lycopersicum esculentum)”
e2“Cyperus esculentus”
e3“seed germination on filter paper”
Claim · model-written summary
Weed exudates showed no marked inhibition of tomato germination and seedling growth in soil.
- Taxon
- tomatoSolanum lycopersicume1
- Treatment
- weed exudatese0
- Outcome
- seed germination and seedling growthe0
- Direction
- did not have marked inhibitione0
- Comparator
- Controle0
- Setting
- soil mediume0
Organisms pictured · Representative pictures of the matched species, not figures from the paper.
Verbatim
e0“The weed exudates however did not have marked inhibition on seed germination and seedling growth in the soil medium; rather, they competed favorably with the Control”
e1“tomato (Lycopersicum esculentum)”
Claim · model-written summary
Longer weed soaking duration made exudates less inhibitory to tomato seed germination.
- Taxon
- tomatoSolanum lycopersicume1
- Treatment
- soaking duratione0
- Outcome
- seed germinatione0
- Direction
- less inhibitorye0
Organisms pictured · Representative pictures of the matched species, not figures from the paper.
Verbatim
e0“the longer the soaking duration of the weeds in water, the less inhibitory their exudates were on seed germination, with water dilution”
e1“tomato (Lycopersicum esculentum)”
The same questions in other papers
Chromolaena odorata · growth · Solanum lycopersicum (tomato)Positive and negative results
1 paper in the same direction as this paper · 1 in the opposite direction
- positive
- negative
Ageratum conyzoides · growth · Solanum lycopersicum (tomato)Results agree
1 paper in the same direction as this paper
- negative
allelopathy · growth · Solanum lycopersicum (tomato)Positive and negative results
7 papers in the same direction as this paper · 2 in the opposite direction
- positive
- positive
- negative
6 papers more in this group
See all 10 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.