Zobrazeno 1 - 10 of 12 pro vyhledávání: '"W. M. Kain"'
1
I. A soil sampler suitable for sampling pastureland
Autor: J. Young, W. M. Kain
Publikováno v: New Zealand Journal of Experimental Agriculture. 3:177-180
A manually operated 10 cm diameter soil sampler, capable of sampling a wide range of pastureland soils, has been developed for population studies of Costelytra zealandica (White). The number of samples taken per 8-h man-day depends on plot size, soil
Externí odkaz: https://explore.openaire.eu/search/publication?articleId=doi_________::5317c0633acd2306b9b8051ee136e934
https://doi.org/10.1080/03015521.1975.10425797
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2
THE EFFECT OF GRASS GRUB ON THE HERBAGE PRODUCTION OF DIFFERENT PASTURE SPECIES IN THE PUMICE COUNTRY
Autor: J. A. Douglas, W. M. Kain, R. East
Publikováno v: Proceedings of the New Zealand Grassland Association. :105-115
Small plot mowing trials carried out on central North Island pumice soils have shown that Huia white clover and SI70 tall fescue support high grass grub populations, while the resistant legumes Wairau lucerne and Maku Lotus pedunculayus suppress gras
Externí odkaz: https://explore.openaire.eu/search/publication?articleId=doi_________::25c2fd1802407c0aca0f9785d367d9ec
https://doi.org/10.33584/jnzg.1979.41.1549
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3
Problems of Insect Pest Assessment in Pastures
Autor: D. S. Atkinson, W. M. Kain
Publikováno v: New Zealand Entomologist. 6:9-13
Summary The major problem associated with detailed pasture insect pest assessment studies is the translation of losses in pasture quality and quantity into animal production. This conIersion is necessary if the economics of insect damage are to be me
Externí odkaz: https://explore.openaire.eu/search/publication?articleId=doi_________::31835dbbcaae5f759d37e2edb2a8486c
https://doi.org/10.1080/00779962.1975.9723091
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4
The prediction and monitoring of lucerne aphids (Acyrthosiphonspp.) in New Zealand (Hemiptera: Aphididae)
Autor: W. M. Kain, D. S. Atkinson
Publikováno v: New Zealand Entomologist. 7:248-255
Experience with outbreaks of 2 new pests — blue green lucerne aphid (BGA), Acyrthosiphon kondi Shinji, and pea aphid, A. pisum (Harris) — in the lucerne (Medicago sativa L.) crops of the southern North Island, provides an example of the value of
Externí odkaz: https://explore.openaire.eu/search/publication?articleId=doi_________::e082b1e846b0ec40bb1b6718560d2495
https://doi.org/10.1080/00779962.1982.9722391
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5
Symposium: Prediction and monitoring of pest outbreaks Prediction of grass grub,Costelytra zealandica, (Coleoptera: Scarabaeidae) populations
Autor: R. East, W. M. Kain
Publikováno v: New Zealand Entomologist. 7:222-227
The sedentary nature of grass grub, Costelytra zealandica (White), infestations and the tendency for populations to increase steadily over several generations until they reach damaging levels allow populations over the build-up phase to be predicted
Externí odkaz: https://explore.openaire.eu/search/publication?articleId=doi_________::9f411c8ff7d561f5cb2eacb61deac4f0
https://doi.org/10.1080/00779962.1982.9722385
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6
Aerial photography for detecting and measuring the extent of pasture damage caused byCostelytra zealandica(White)
Autor: W. M. Kain
Publikováno v: New Zealand Journal of Experimental Agriculture. 3:173-176
Aerial photography has proved a useful technique for detecting and measuring areas of pasture damaged by larvae of Costelytra zealandica (White). Colour infrared film appears to be more versatile for this work than conventional colour film. Distincti
Externí odkaz: https://explore.openaire.eu/search/publication?articleId=doi_________::b88940a02a4b0af1e781330f38863fd2
https://doi.org/10.1080/03015521.1975.10425796
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8
Development of resistant pasture and methods of pasture management for grass grub (Costelytra zealandica(White)) control
Autor: D. S. Atkinson, W. M. Kain
Publikováno v: New Zealand Journal of Agricultural Research. 20:507-517
In the field, larval resistance in Holcus lanatus and Phalaris tuberosa was identified and resistance in Lotus pedunculatus, Medicago sativa, and Poa pratensis confirmed. Trifoliate legumes were extremely favourable host plants for larvae in comparis
Externí odkaz: https://explore.openaire.eu/search/publication?articleId=doi_________::f2a6c9404d9018f0fd302a46c0ea8f9c
https://doi.org/10.1080/00288233.1977.10427367
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9
Preliminary evaluations of parasitic nematodes for grass grub (Costelytra zealandica(White)) control in central Hawke's Bay of New Zealand
Autor: W. M. Kain, C. J. Van Der Mespel, R. A. Bedding
Publikováno v: New Zealand Journal of Experimental Agriculture. 10:447-450
Mortality of third instar grass grub occurred in the laboratory at lower temperatures with Neoaplectana glaseri Steiner than with Heterorhabditis bacteriophora Poinar. Field applications of N. glaseri were sprayed onto small plots at 3 or more rates
Externí odkaz: https://explore.openaire.eu/search/publication?articleId=doi_________::35f999b9a6595bd05cdccccdf2208f3e
https://doi.org/10.1080/03015521.1982.10427917
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10
Effect of pea aphid and bluegreen lucerne aphid (Acyrthosiphonspp.) on coumestrol levels in herbage of lucerne (Medicago sativa)
Autor: W. M. Kain, D. R. Biggs
Publikováno v: New Zealand Journal of Agricultural Research. 23:563-568
Field and glasshouse studies showed that infestations of pea aphid (Acyrthosiphon pisum Harris) and bluegreen lucerne aphid (A. kondoi Shinji) (BGA) caused increased coumestrol levels in herbage of lucerne (Medicago sativa cv. “Wairau”). Under fi
Externí odkaz: https://explore.openaire.eu/search/publication?articleId=doi_________::70c31554f4be63c751aa1408bcdede7a
https://doi.org/10.1080/00288233.1980.10417883
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