Zobrazeno 1 - 10
of 10
pro vyhledávání: '"R. L. Pienkowski"'
Publikováno v:
Weed Science. 22:490-495
Weed species or genera previously and currently targeted for biological control with phytophagous insects or phytopathogens in the United States (including Hawaii) and Canada are listed. The current status of and natural enemies involved in national,
Externí odkaz:
https://explore.openaire.eu/search/publication?articleId=doi_________::61e53ad01f0f7f2b9d88ad0bef88c761
https://doi.org/10.1017/s0043174500038078
https://doi.org/10.1017/s0043174500038078
Autor:
D. E. Simonet, R. L. Pienkowski
Publikováno v:
The Canadian Entomologist. 111:481-486
Populations of potato leafhopper nymphs were sampled in two alfalfa fields throughout the summers of 1976 and 1977 in Montgomery County, Virginia. A dichlorvos-carton sampling method was used to collect nymphs from 3-stem alfalfa bouquets. Instars we
Externí odkaz:
https://explore.openaire.eu/search/publication?articleId=doi_________::f0d56119ce618050398ae6f6d44ec36f
https://doi.org/10.4039/ent111481-4
https://doi.org/10.4039/ent111481-4
Autor:
J. T. Medler, R. L. Pienkowski
Publikováno v:
Annals of the Entomological Society of America. 57:588-591
The potato leafhopper, Empoasca jabae (Harris), winters only in the extreme southern portions of the United States. Each year in April and May a northward movement occurs, associated with the warm south winds and air masses moving up the Mississippi
Externí odkaz:
https://explore.openaire.eu/search/publication?articleId=doi_________::1f092a8e6aeb1ed3a6d23b0e2139c9b3
https://doi.org/10.1093/aesa/57.5.588
https://doi.org/10.1093/aesa/57.5.588
Publikováno v:
Crop Science. 16:190-192
Externí odkaz:
https://explore.openaire.eu/search/publication?articleId=doi_________::1e486dd6ef5b3edadbe6916832ea2f14
https://doi.org/10.2135/cropsci1976.0011183x001600020006x
https://doi.org/10.2135/cropsci1976.0011183x001600020006x
Autor:
J. O. Howell, R. L. Pienkowski
Publikováno v:
Entomophaga. 17:5-7
C. kincaidii, an ectoparasite ofTetragnatha laboriosaHentz, was found most commonly in spring and fall. Peak parasitism was 18%. They appeared to oviposit only on middle instar spiderlings, and winter as larvae attached to spiders.
Externí odkaz:
https://explore.openaire.eu/search/publication?articleId=doi_________::9f15ae5a8cf9e93c9fbe93f037cddfc4
https://doi.org/10.1007/bf02371069
https://doi.org/10.1007/bf02371069
Publikováno v:
Weed Science. 22:1-3
Rhinocyllus conicusFroel. (Col.: Curculionidae) larvae feeding within the capitula ofCarduusthistles may reduce production of viable seeds. EachR. conicuslarva destroyed 9.7 developing musk thistle (Carduus nutansL.) seeds. An average musk thistle ca
Externí odkaz:
https://explore.openaire.eu/search/publication?articleId=doi_________::3e1a2d0c75894fa2311c2bf675f4a692
https://doi.org/10.1017/s0043174500036389
https://doi.org/10.1017/s0043174500036389
Autor:
R. L. Pienkowski, R. D. Blakeslee
Publikováno v:
Insecticide and Acaricide Tests. 3:115-116
The insecticide was applied to the soil surface at planting (Apr 15, 1977). Field size was ca. 1.2 ha with 3 other similar fields nearby on a contour planted slope in Montgomery Co., Va. Soil type and fertility prior to planting was Allen sandy-loam,
Externí odkaz:
https://explore.openaire.eu/search/publication?articleId=doi_________::94e7852f5085d589e5c985a2ad0858c9
https://doi.org/10.1093/iat/3.1.115a
https://doi.org/10.1093/iat/3.1.115a
Autor:
J.W. Neal, R. L. Pienkowski, D. F. Bray, H. A. Thomas, F. W. Plapp, G. M. McWhorter, R. L. Jones, D. G. Cochran, D. J. Womeldorf, G. J. Musick, W. T. Reed
Publikováno v:
Bulletin of the Entomological Society of America. 27:59-59
Externí odkaz:
https://explore.openaire.eu/search/publication?articleId=doi_________::1e2ce544daaca7bd5f26bc03e58ea5c5
https://doi.org/10.1093/besa/27.1.59
https://doi.org/10.1093/besa/27.1.59
Autor:
R. L. Pienkowski
Publikováno v:
Insecticide and Acaricide Tests. 5:122-122
Sprays were applied to 21 × 21 ft plots in a 2 year old stand of ca 15 inch tall alfalfa near Blacksburg, Va. on May 7'79, using a hand sprayer at a rate of 20 gal/acre. Treatments were replicated 3 times. Numbers are mean counts per 10 pendulum swe
Externí odkaz:
https://explore.openaire.eu/search/publication?articleId=doi_________::2c6e5a820211082106eb041516b71668
https://doi.org/10.1093/iat/5.1.122
https://doi.org/10.1093/iat/5.1.122
Publikováno v:
Bulletin of the Entomological Society of America. 8:94-94
Externí odkaz:
https://explore.openaire.eu/search/publication?articleId=doi_________::34cd35b0a7bbdf2aea8920f5422bdb05
https://doi.org/10.1093/besa/8.2.94a
https://doi.org/10.1093/besa/8.2.94a