Abstract
Abstract The effects of porina larvae infestation from April to September on monocultures and mixtures of Grasslands Ruanui and Manawa ryegrass, and Huia and 4700 white clover, and on mixtures of Ruanui ryegrass and white clover of high or no cyanogenic glucoside content were examined. No effect of species or of white clover cyanogenic glucoside content on larval survival was shown. Larval weight was related to density of surviving larvae and potential yield of the sward. Larvae reduced yield of white clover monocultures more markedly than of other swards, but susceptibility of white clover was buffered in mixture with ryegrass, Manawa was more susceptible than Ruanui ryegrass to porina infestation, which modified their competitive balance. Effects of larvae on herbage and chemical composition were shown. Measurements of herbage yield reduction caused by porina larvae in glasshouse and field experiments are compared, and management techniques which may minimise the effect of porina damage are discussed.
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Claims 7
Claim · model-written summary
Porina larval survival was not affected by species or by white clover cyanogenic glucoside content.
- Taxon
- ryegrass and white clover
Trifolium repens
Loliumt0 - Interactor
- porina larvaee0pest
- Outcome
- larval survivale1
Organisms pictured · Representative pictures of the matched species, not figures from the paper.
Verbatim
t0“competitive interactions of ryegrass and white clover varieties”
e0“The effects of porina larvae infestation from April to September”
e1“No effect of species or of white clover cyanogenic glucoside content on larval survival was shown”
Claim · model-written summary
Larval weight was related to the density of surviving larvae and to the potential yield of the sward.
- Taxon
- ryegrass and white cloverTrifolium repensLoliumt0
- Interactor
- porina larvaee0pest
- Outcome
- Larval weighte2
- Qualifier
- density of surviving larvae and potential yield of the swarde2
Not reportedDirection
Organisms pictured · Representative pictures of the matched species, not figures from the paper.
Verbatim
t0“competitive interactions of ryegrass and white clover varieties”
e0“The effects of porina larvae infestation from April to September”
e2“Larval weight was related to density of surviving larvae and potential yield of the sward”
Claim · model-written summary
Larvae reduced yield of white clover monocultures more than yield of other swards.
- Taxon
- white cloverTrifolium repense3
- Treatment
- porina larvae infestatione0
- Interactor
- Larvaee3pest
- Outcome
- yielde3
- Direction
- reducede3
- Comparator
- other swardse3
Organisms pictured · Representative pictures of the matched species, not figures from the paper.
Verbatim
t0“competitive interactions of ryegrass and white clover varieties”
e0“The effects of porina larvae infestation from April to September”
e3“Larvae reduced yield of white clover monocultures more markedly than of other swards”
Claim · model-written summary
Susceptibility of white clover was buffered in mixture with ryegrass.
- Taxon
- white cloverTrifolium repense4
- Treatment
- in mixture with ryegrasse4
- Outcome
- susceptibilitye4
- Direction
- bufferede4
Organisms pictured · Representative pictures of the matched species, not figures from the paper.
Verbatim
e4“susceptibility of white clover was buffered in mixture with ryegrass”
Claim · model-written summary
Manawa ryegrass was more susceptible to porina infestation than Ruanui ryegrass.
- Material
- Manawae5
- Treatment
- porina infestatione5
- Outcome
- susceptiblee5
- Direction
- more susceptiblee5
- Comparator
- Ruanui ryegrasse5
Organisms pictured · Representative pictures of the matched species, not figures from the paper.
Verbatim
e5“Manawa was more susceptible than Ruanui ryegrass to porina infestation, which modified their competitive balance”
Claim · model-written summary
Porina infestation modified the competitive balance between the Manawa and Ruanui ryegrass varieties.
Organisms pictured · Representative pictures of the matched species, not figures from the paper.
Verbatim
e5“Manawa was more susceptible than Ruanui ryegrass to porina infestation, which modified their competitive balance”
Claim · model-written summary
Larvae had effects on herbage and chemical composition.
- Taxon
- ryegrass and white cloverTrifolium repensLoliumt0
- Interactor
- larvaee6pest
- Outcome
- herbage and chemical compositione6
Organisms pictured · Representative pictures of the matched species, not figures from the paper.
Verbatim
t0“competitive interactions of ryegrass and white clover varieties”
e6“Effects of larvae on herbage and chemical composition were shown”
The same questions in other papers
infection · yield · Trifolium repens (white clover)Positive and negative results
2 papers in the same direction as this paper · 2 in the opposite direction
- positive
- positive
- no effect
1 paper more in this group
See all 5 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.