The reliability of colorado potato beetles (Leptinotarsa decemlineata Say) population density predictions based on phenological and overwintering data

Autor: Külli Hiiesaar, Viacheslav Eremeev, Ingrid H. Williams

Publikováno v: Agraarteadus, Vol 28, Iss 1, Pp 13-18 (2017)

On the basis of phenological observations and over-wintering mortality data in 2015/2016 we tried to predict the population density of Colorado potato beetle (Leptinotarsa decemlineata Say) (CPB) for the following season. Because of the late and cool

Externí odkaz: https://doaj.org/article/a4fda98ccf164d21ab9a2e914dbeb2f0

Regular periods of abdominal contractions recorded from larvae of the bumblebee, Bombus terrestris (Hymenoptera: Apidae)

Autor: Marika MÄND, Aare KUUSIK, MARTIN Ants-Johannes, Ingrid H. WILLIAMS, Anne LUIK, Reet KARISE, Luule METSPALU, Külli HIIESAAR

Publikováno v: European Journal of Entomology, Vol 103, Iss 2, Pp 319-322 (2006)

Using an opto-cardiograph combined with an infrared gas analyzer regular bouts of abdominal contractions were recorded from last instar larva of Bombus terrestris. The rate of CO2 release was about 0.7 ml g-1 h-1. The bouts of contractions were of tw

Externí odkaz: https://doaj.org/article/bb9ce91cc2794b06a75ba16448445b44

Does winter oilseed rape as a winter cover crop influence potato late blight development in an organic crop rotation?

Autor: Ülo Niinemets, Eve Kaurilind, Terje Tähtjärv, Ingrid H. Williams, Viacheslav Eremeev, P. Lääniste, Eve Runno-Paurson, Tiina Tosens

Publikováno v: Biological Agriculture & Horticulture. 36:71-83

In this study, the effects of a winter cover crop (CC) and its combination with composted cattle manure (CC-M) on the development of potato late blight (Phytophthora infestans) and crop yield were ...

Externí odkaz: https://explore.openaire.eu/search/publication?articleId=doi_________::e0d431f69e794a8acbb7637cc1f74cc0
https://doi.org/10.1080/01448765.2019.1680432

Diversity of populations of Phytophthora infestans in relation to patterns of potato crop management in Latvia and Lithuania

Autor: I. Skrabule, Antanas Ronis, Marika Mänd, Ingrid H. Williams, Riinu Kiiker, David E. L. Cooke, Eve Runno-Paurson, Jens Grønbech Hansen

Publikováno v: Kiiker, R, Skrabule, I, Ronis, A, Cooke, D E L, Hansen, J G, Williams, I H, Mänd, M & Runno-Paurson, E 2019, ' Diversity of populations of Phytophthora infestans in relation to patterns of potato crop management in Latvia and Lithuania ', Plant Pathology, vol. 68, no. 6, pp. 1207-1214 . https://doi.org/10.1111/ppa.13030

Potato crop losses can be substantial when conditions for late blight (Phytophthora infestans) development and spread are favourable. In this study, drivers of differences between the P. infestans population structures in Latvia and Lithuania, two ne

Externí odkaz: https://explore.openaire.eu/search/publication?articleId=doi_dedup___::0f9ce1ff66ca365e400764847228545b
https://doi.org/10.1111/ppa.13030

Evaluation of foliar late blight resistance of potato cultivars in northern Baltic conditions

Autor: Ülo Niinemets, Helina Nassar, Ants Einola, Katrin Kotkas, Merili Hansen, Eve Runno-Paurson, Ingrid H. Williams

Publikováno v: Zemdirbyste-Agriculture. 106:45-52

The main aim of this study was to evaluate foliar late blight resistance and yield of selected foreign and Estonian potato cultivars to determine the most promising cultivars for the northern Baltic region. We hypothesized that local cultivars have h

Externí odkaz: https://explore.openaire.eu/search/publication?articleId=doi_________::a4bec80104c5d55741fa6bd3dcee8372
https://doi.org/10.13080/z-a.2019.106.006