Abstract
Abstract Monoculture plots of ‘Grasslands Ruanui’ and ‘Grasslands Nui’ perennial ryegrasses were established with high and low nitrogen/water treatments. Twice‐weekly examinations of tagged rye grass tillers showed Ruanui with high N/water (RH) to be more severely damaged by Argentine stem weevil larvae than Ruanui with low N/water (RL) or Nui with either treatment (NL and NH). More stem weevil larvae were found in Ruanui plots, and in plots with high N/water. Peak larval densities in RH plots were 1500 larvae/m 2 or one per 4.8 tillers. Although RH plots sustained higher rates of stem weevil damage, no similar cultivar × nutrition interaction was detected for larval density. Net growth rates for RH plots were reduced because of high rates of herbage and tiller death during January and February when stem weevil damage was greatest. High rates of tillering in RH plots during April were associated with a recovery of both tiller density and growth rate. It is suggested that studies concerning stem weevil susceptibility should allow for nutritional effects.
Abstract from the paper’s OpenAlex record, shown for indexing and research. Copyright remains with the authors or the publisher. Read at the source ↗
The text the model read, with the source record’s inline markup (italics, sub- and superscripts) rendered and its character entities decoded; quote offsets refer to the raw text.
Claims 10
Claim · model-written summary
High N/water Ruanui was more severely damaged by Argentine stem weevil larvae than low N/water Ruanui or Nui.
Verbatim
e0“Ruanui with high N/water (RH) to be more severely damaged by Argentine stem weevil larvae than Ruanui with low N/water (RL) or Nui with either treatment (NL and NH)”
Claim · model-written summary
Stem weevil larvae were more numerous in Ruanui plots.
Verbatim
e0“More stem weevil larvae were found in Ruanui plots”
Claim · model-written summary
Stem weevil larvae were more numerous in high N/water plots.
Verbatim
e0“More stem weevil larvae were found in Ruanui plots, and in plots with high N/water.”
Claim · model-written summary
Peak larval density in high N/water Ruanui plots reached 1500 larvae/m 2.
- Taxon
- Ruanuit0
- Material
- RHe0
- Interactor
- Argentine stem weevil
Listronotus bonariensist0pest - Outcome
- larval densitiese0
- Direction
- Peake0
- Value
- 1500 larvae/m 2e0
Organisms pictured · Representative pictures of the matched species, not figures from the paper.
Verbatim
e0“Peak larval densities in RH plots were 1500 larvae/m 2 or one per 4.8 tillers”
t0“Argentine stem weevil effects on Nui and Ruanui ryegrasses”
Claim · model-written summary
Peak larval density in high N/water Ruanui plots was one per 4.8 tillers.
- Taxon
- Ruanuit0
- Interactor
- Argentine stem weevilListronotus bonariensist0pest
- Outcome
- larval densitiese0
- Value
- one per 4.8 tillerse0
Organisms pictured · Representative pictures of the matched species, not figures from the paper.
Verbatim
e0“Peak larval densities in RH plots were 1500 larvae/m 2 or one per 4.8 tillers”
t0“Argentine stem weevil effects on Nui and Ruanui ryegrasses”
Claim · model-written summary
Cultivar by nutrition interaction was not detected for larval density.
LoliumNot reportedDirection
Organisms pictured · Representative pictures of the matched species, not figures from the paper.
Verbatim
e0“no similar cultivar × nutrition interaction was detected for larval density”
t0“Argentine stem weevil effects on Nui and Ruanui ryegrasses”
Claim · model-written summary
Net growth rates in high N/water Ruanui plots were reduced with herbage and tiller death during peak weevil damage.
Verbatim
e0“Net growth rates for RH plots were reduced because of high rates of herbage and tiller death during January and February when stem weevil damage was greatest”
t0“Ruanui ryegrasses”
Claim · model-written summary
High April tillering in high N/water Ruanui was associated with tiller density recovery.
Verbatim
e0“High rates of tillering in RH plots during April were associated with a recovery of both tiller density and growth rate”
t0“Ruanui ryegrasses”
Claim · model-written summary
High April tillering in high N/water Ruanui was associated with growth rate recovery.
Verbatim
e0“High rates of tillering in RH plots during April were associated with a recovery of both tiller density and growth rate”
t0“Ruanui ryegrasses”
Claim · model-written summary
Stem weevil susceptibility studies should account for nutritional effects.
Organisms pictured · Representative pictures of the matched species, not figures from the paper.
Verbatim
e0“studies concerning stem weevil susceptibility should allow for nutritional effects”
t0“ryegrasses”