scholarly journals Roadside mowing spreads yellow bristle grass (Setaria pumila) seeds further than by natural dispersal

2019 ◽  
Vol 72 ◽  
pp. 153-157
Author(s):  
Trevor K. James ◽  
Michael R. Trolove ◽  
Claire A. Dowsett
Keyword(s):  
New Zealand ◽  
Seed Dispersal ◽  
Perpendicular Direction ◽  
Sticky Traps ◽  
The Road ◽  
Natural Dispersal ◽  
Yellow Sticky Traps

Yellow bristle grass is a highly invasive annual C4 pasture weed that has spread rapidly through many New Zealand dairying regions via seed dispersal. Seven trials were conducted on roadsides infested with yellow bristle grass to evaluate natural and mower-assisted dispersal. To trap seeds, yellow sticky traps were laid out at various intervals both perpendicular to and parallel to the road. Traps were in place for 24 h in the four natural dispersal trials but only for the event in the mowing trials. Seeds on the retrieved traps were counted and the seeds caught in the mower estimated. For natural dispersal, 90% of seeds fell within 0.5 m. When mown, 90% of the seeds fell within 2 metres in the direction of mowing and 80% within 20 cm in the perpendicular direction. More importantly, a small percentage of dispersed seeds were caught in the mower and presumably could subsequently fall off anywhere. Mowing mature yellow bristle grass on the roadside will result in accelerating seed dispersal along the roadside for many metres and potentially many kilometres.

scholarly journals The search for a vector of strawberry lethal yellows (SLY) in New Zealand

2002 ◽  
Vol 55 ◽  
pp. 385-389 ◽  
Author(s):  
J.G. Charles ◽  
D.J. Allan ◽  
M.T. Andersen ◽  
G. Langford ◽  
D. Mossop
Keyword(s):  
Polymerase Chain Reaction ◽  
New Zealand ◽  
Second Generation ◽  
Insect Vectors ◽  
Chain Reaction ◽  
Sticky Traps ◽  
Plant Hosts ◽  
Polymerase Chain ◽  
First And Second Generation ◽  
Yellow Sticky Traps

Strawberry lethal yellows (SLY) is a phytoplasma disease that affects strawberry plants in New Zealand and Australia Although it has been established that this phytoplasma (Candidatus Phytoplasma australiense) is responsible for causing diseases in a number of other plant hosts an insect responsible for its spread still remains to be determined To identify potential insect vectors yellow sticky traps were established at two properties in the Bay of Plenty from planting (early October 2001) until harvest (May 2002) Leafhoppers caught in the traps until March 2002 and by sweepnetting the surrounding habitats in February were identified and tested for the presence of phytoplasma using Polymerase Chain Reaction (PCR) Arawa variegata and Recilia hospes (both Cicadellidae) were the commonest leafhoppers trapped Phytoplasma was detected in first and second generation A variegata in October and February respectively and in second generation R hospes in February The implications of this work for future SLY studies is discussed

scholarly journals Pyridine compounds increase trap capture of Frankliniella occidentalis (Pergande) in a covered crop

2007 ◽  
Vol 60 ◽  
pp. 56-60 ◽  
Author(s):  
M.M. Davidson ◽  
R.C. Butler ◽  
S. Winkler ◽  
D.A.J. Teulon
Keyword(s):  
New Zealand ◽  
Frankliniella Occidentalis ◽  
Crop Canopy ◽  
Rectangular Array ◽  
Sticky Traps ◽  
Ethyl Nicotinate ◽  
Trap Catches ◽  
Ethyl Isonicotinate ◽  
Yellow Sticky Traps

The effect of pyridine compounds on the capture of thrips was examined in an Auckland New Zealand capsicum greenhouse in 2004 Yellow sticky traps were positioned just above the crop canopy in a rectangular array with 6 traps per compound and 6 control traps 2024 m apart and left for 24 h Most thrips found on traps were Frankliniella occidentalis (>99) Fourteen times more female F occidentalis were captured on traps with methyl isonicotinate or ethyl isonicotinate than on controls Sticky traps treated with methyl 4pyridyl ketone also caught more female F occidentalis than controls (45) Sticky traps with methyl isonicotinate caught more male F occidentalis (up to 52) than controls Ethyl2chloropyridine4carboxylate and ethyl nicotinate did not increase trap catches of either sex The results demonstrated that selected pyridine compounds have the potential to improve trap capture of F occidentalis in a covered crop

scholarly journals The Face at the End of the Road

2012 ◽  
Vol 16 (2) ◽  
pp. 149-164
Author(s):  
Tess Moeke-Maxwell
Keyword(s):  
New Zealand ◽  
Social Construction ◽  
The Other ◽  
Binary Opposition ◽  
The Road ◽  
Aotearoa New Zealand ◽  
The Social ◽  
Health Practitioners ◽  
The Face ◽  
Phd Thesis

In the bicultural context of Aotearoa New Zealand, Māori (people of the land) and Tauiwi (the other tribe, i.e. Pākehā and other non-indigenous New Zealanders), continue to be represented in binary opposition to each other. This has real consequences for the way in which health practitioners think about and respond to Māori. Reflecting on ideas explored in my PhD thesis, I suggest that Māori identity is much more complex than popular representations of Māori subjectivity allow. In this article I offer an alternative narrative on the social construction of Māori identity by contesting the idea of a singular, quintessential subjectivity by uncovering the other face/s subjugated beneath biculturalism’s preferred subjects. Waitara Mai i te horopaki iwirua o Aotearoa, arā te Māori (tangata whenua) me Tauiwi (iwi kē, arā Pākehā me ētahi atu iwi ehara nō Niu Tīreni), e mau tonu ana te here mauwehe rāua ki a rāua anō. Ko te mutunga mai o tēnei ko te momo whakaarohanga, momo titiro hoki a ngā kaimahi hauora ki te Māori. Kia hoki ake ki ngā ariā i whakaarahia ake i roto i taku tuhinga kairangi. E whakapae ana au he uaua ake te tuakiri Māori ki ngā horopaki tauirahia mai ai e te marautanga Māori. I konei ka whakatauhia he kōrero kē whakapā atu ki te waihangatanga o te tuakiri Māori, tuatahi; ko te whakahē i te ariā takitahi, marautanga pūmau mā te hurahanga ake i tērā āhua e pēhia nei ki raro iho i te whainga marau iwiruatanga. Tuarua, mai i tēnei o taku tuhinga rangahau e titiro nei ki ngā wawata ahurei a te Māori noho nei i raro i te māuiuitanga whakapoto koiora, ka tohu au ki te rerekētanga i waenga, i roto hoki o ngā Māori homai kōrero, ā, ka whakahāngaia te titiro ki te momo whakatau āwhina a te hauora ā-motu i te hunga whai oranga.

scholarly journals Evaluation of Yellow Sticky Traps for Monitoring the Population of Thrips (Thysanoptera) in a Mango Orchard

2011 ◽  
Vol 40 (4) ◽  
pp. 873-879 ◽  
Author(s):  
Hamaseh Aliakbarpour ◽  
Che Salmah Md. Rawi
Keyword(s):  
Sticky Traps ◽  
Yellow Sticky Traps

scholarly journals Air Pollution Exposure in Walking School Bus Routes: A New Zealand Case Study

2018 ◽  
Vol 15 (12) ◽  
pp. 2802 ◽  
Author(s):  
Kim Dirks ◽  
Jennifer Salmond ◽  
Nicholas Talbot
Keyword(s):  
Air Pollution ◽  
New Zealand ◽  
Traffic Safety ◽  
Traffic Congestion ◽  
Ultrafine Particle ◽  
School Buses ◽  
The Road ◽  
Air Pollution Exposure ◽  
Using Data ◽  
Pollution Exposure

Walking School Buses (WSBs), organized groups for children to walk to school under the supervision of adults, help reduce traffic congestion and contribute towards exercise. Routes are based largely on need, traffic safety and travel time, with exposure to air pollution not generally considered. This paper explores whether reductions in exposure can be achieved based on the side of the road travelled using data collected in Auckland, New Zealand. Exposure to air pollution was measured for a 25-min commute consisting of a 10-min segment along a quiet cul-de-sac and a 15-min segment along a main arterial road with traffic congestion heavier in one direction. Two participants were each equipped with a portable P-Trak ultrafine particle monitor and a portable Langan carbon monoxide monitor, and walked the route on opposite sides of the road simultaneously, for both morning and afternoon, logging 10-s data. The results suggest that pedestrians travelling on the footpath next to the less congested side of the road in the morning avoid many short-term peaks in concentration and experience significantly lower mean exposures than those travelling on the footpath next to the more congested side. Significant reductions in air pollution exposure could be made for children by taking into account the side of the road in WSB route design.

Natural Enemy Community Composition and Impact on Brown Marmorated Stink Bug (Hemiptera: Pentatomidae) Eggs in Minnesota Apple Orchards

2020 ◽  
Vol 49 (2) ◽  
pp. 324-333 ◽  
Author(s):  
Hailey N Shanovich ◽  
Brian H Aukema ◽  
Robert L Koch
Keyword(s):  
Natural Enemies ◽  
Natural Enemy ◽  
Management Practices ◽  
Stink Bug ◽  
Apple Orchards ◽  
Sticky Traps ◽  
Predator Abundance ◽  
Polyphagous Insect ◽  
The Impact ◽  
Yellow Sticky Traps

Abstract Halyomorpha halys is an invasive, polyphagous insect that feeds on many major crops, including apple. Statewide monitoring in Minnesota has shown continued increase of H. halys populations and occurrence of this pest in apple orchards. Potential arthropod natural enemies of H. halys and other pests have not been studied in Minnesota apple orchards. The purpose of this study was to characterize the composition of natural enemy communities; compare their abundances, richness and diversities between apple cultivars using different sampling methods; and assess the impact of natural enemies on sentinel eggs of H. halys in Minnesota apple orchards. Sampling occurred during the summers of 2017 and 2018 on Zestar! and Honeycrisp cultivars in four different apple orchards. In vacuum samples, arachnids, neuropterans, and coccinellids had the highest relative abundances. On yellow sticky traps, anthocorids were the most abundant. The total predator abundance differed between the cultivars sampled across years, with more predators found on Zestar! compared with Honeycrisp. No differences were observed in richness or diversity between cultivars with the exception of yellow sticky traps in 2017, which showed a greater diversity of predators in Zestar!. Despite the abundance of natural enemies sampled, sentinel egg masses deployed in the orchards each summer suffered on average <2% predation and no parasitism across years. Knowledge of differences in predator abundance between cultivars could inform management decisions; however, with current management practices, the potential for biological control of H. halys in conventional apple orchards appears low.

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