Abstract
Abstract Native insects, especially broad‐nosed weevils (Curculionidae; Leptopiinae), living in tussock grassland, feed on oversown white clover ( Trifolium repens L. ‘Grasslands Huia’) seedlings, causing damage and loss of plants. The maintenance of relatively ‘insect‐free’ conditions by using regular parathion spray treatment reduced seedling losses 8 weeks after sowing from 19 to 1%. Seed dressing with oxamyl decreased seedling loss by about 65% during the first 4–5 weeks after germination, improved plant establishment by 20%, and increased plant yield by 28% in the second season. Neither omethoate seed dressing nor doubling seeding rate gave significant improvement in plant establishment or yield, although omethoate gave newly germinated seedlings some protection from insects. Lotus pedunculatus Cav. ‘Grasslands Maku’ was not severely damaged as a result of insect feeding activity because of suspected repellent and toxic properties of the plant.
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Claims 9
Claim · model-written summary
Native insects damaged and killed oversown white clover seedlings.
- Taxon
- white clover
Trifolium repense0 - Outcome
- damage and loss of plantse0
Organisms pictured · Representative pictures of the matched species, not figures from the paper.
Verbatim
e0“Native insects, especially broad‐nosed weevils (Curculionidae; Leptopiinae), living in tussock grassland, feed on oversown white clover ( Trifolium repens L. ‘Grasslands Huia’) seedlings, causing damage and loss of plants”
Claim · model-written summary
Regular parathion spraying reduced white clover seedling losses from 19 to 1% at eight weeks.
- Taxon
- white cloverTrifolium repense1
- Treatment
- regular parathion spray treatmente0
- Outcome
- seedling lossese0
- Direction
- reducede0
- Value
- 19 to 1%e0
Not reportedComparator
Organisms pictured · Representative pictures of the matched species, not figures from the paper.
Verbatim
e0“regular parathion spray treatment reduced seedling losses 8 weeks after sowing from 19 to 1%”
e1“white clover”
Claim · model-written summary
Oxamyl seed dressing decreased seedling loss by about 65% in the first 4–5 weeks.
- Taxon
- white cloverTrifolium repense1
- Treatment
- Seed dressing with oxamyle0
- Outcome
- seedling losse0
- Direction
- decreasede0
- Value
- about 65%e0
Not reportedComparator
Organisms pictured · Representative pictures of the matched species, not figures from the paper.
Verbatim
e0“Seed dressing with oxamyl decreased seedling loss by about 65% during the first 4–5 weeks after germination”
e1“white clover”
Claim · model-written summary
Oxamyl improved establishment by 20%.
- Taxon
- white cloverTrifolium repense1
- Treatment
- Seed dressing with oxamyle2
- Outcome
- plant establishmente0
- Direction
- improvede0
- Value
- 20%e0
Not reportedComparator
Organisms pictured · Representative pictures of the matched species, not figures from the paper.
Verbatim
e0“improved plant establishment by 20%”
e1“white clover”
e2“Seed dressing with oxamyl decreased seedling loss”
Claim · model-written summary
Oxamyl increased second-season yield by 28%.
- Taxon
- white cloverTrifolium repense1
- Treatment
- Seed dressing with oxamyle2
- Outcome
- plant yielde0
- Direction
- increasede0
- Value
- 28%e0
Not reportedComparator
Organisms pictured · Representative pictures of the matched species, not figures from the paper.
Verbatim
e0“increased plant yield by 28% in the second season”
e1“white clover”
e2“Seed dressing with oxamyl decreased seedling loss”
Claim · model-written summary
Omethoate seed dressing did not significantly improve establishment or yield.
- Taxon
- white cloverTrifolium repense1
- Treatment
- omethoate seed dressinge0
- Outcome
- plant establishment or yielde0
Not reportedComparatorDirection
Organisms pictured · Representative pictures of the matched species, not figures from the paper.
Verbatim
e0“Neither omethoate seed dressing nor doubling seeding rate gave significant improvement in plant establishment or yield”
e1“white clover”
Claim · model-written summary
Doubling seeding rate did not significantly improve establishment or yield.
- Taxon
- white cloverTrifolium repense1
- Treatment
- doubling seeding ratee0
- Outcome
- plant establishment or yielde0
Not reportedComparatorDirection
Organisms pictured · Representative pictures of the matched species, not figures from the paper.
Verbatim
e0“Neither omethoate seed dressing nor doubling seeding rate gave significant improvement in plant establishment or yield”
e1“white clover”
Claim · model-written summary
Omethoate protected newly germinated seedlings from insects.
- Taxon
- white cloverTrifolium repense1
- Treatment
- omethoatee0
- Outcome
- protection from insectse0
Not reportedComparatorDirection
Organisms pictured · Representative pictures of the matched species, not figures from the paper.
Verbatim
e0“omethoate gave newly germinated seedlings some protection from insects”
e1“white clover”
Claim · model-written summary
Maku lotus was not severely damaged by insect feeding, possibly due to repellent and toxic properties.
- Taxon
- Lotus pedunculatus
Lotus pedunculatuse0 - Interactor
- insecte0pest
- Outcome
- not severely damagede0
- Qualifier
- suspected repellent and toxic propertiese0
Organisms pictured · Representative pictures of the matched species, not figures from the paper.
Verbatim
e0“Lotus pedunculatus Cav. ‘Grasslands Maku’ was not severely damaged as a result of insect feeding activity because of suspected repellent and toxic properties of the plant”
The same questions in other papers
oxamyl · growth · Trifolium repens (white clover)Results agree
1 paper in the same direction as this paper
- positive
density · yield · Trifolium repens (white clover)Positive and negative results
5 papers in the same direction as this paper · 4 in the opposite direction
- positive
- positive
- positive
6 papers more in this group
See all 10 papers →seed treatment · growth · Trifolium repens (white clover)Positive and negative results
7 papers in the same direction as this paper · 3 in the opposite direction
- negative
- negative
- negative
7 papers more in this group
See all 11 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.