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Autor:
Jaroslav Urban
Publikováno v:
Acta Universitatis Agriculturae et Silviculturae Mendelianae Brunensis, Vol 67, Iss 3, Pp 771-785 (2019)
The research study deals with the occurrence, cecidogenesis and development of the bisexual generation of Biorhiza pallida in the Brno region. Galls were found most frequently on Quercus petraea and on Q. robur. At the end of the winter season, femal
Externí odkaz:
https://doaj.org/article/ba387480773e469f90e226e87cb1d688
Autor:
Marcel HEROUT, Jan KOUKOLÍČEK, David KINCL, Kateřina PAZDERŮ, Jaroslav TOMÁŠEK, Jaroslav URBAN, Josef PULKRÁBEK
Publikováno v:
Plant, Soil and Environment, Vol 64, Iss 10, Pp 498-503 (2018)
Soil erosion by water has become an issue in the cultivation of maize (Zea mays L.) on sloping lands in recent years. The following three technologies of tillage have been assessed: disc cultivator, strip-till and no-till (raw land). Seeding machine
Externí odkaz:
https://doaj.org/article/d73effc8dff6456292534deb7ada9632
Publikováno v:
Plant, Soil and Environment, Vol 64, Iss 4, Pp 186-191 (2018)
The main aim of the study was evaluation of the content of -solanine, -chaconine and total glycoalkaloids (TGA) in fourteen new potato cultivars with purple and red flesh in comparison with yellow- and white-fleshed control potatoes cultivated
Externí odkaz:
https://doaj.org/article/cb56d0cd7cf34b7b911b852152a33e53
Autor:
Jaroslav Urban
Publikováno v:
Acta Universitatis Agriculturae et Silviculturae Mendelianae Brunensis, Vol 66, Iss 4, Pp 905-925 (2018)
The paper results from two years of studying development and formation of the galls of Diplolepis rosae (L.) on Rosa canina (L.) in the Brno region (Czech Republic). Following the extremely warm and dry growing season of 2015, 70 % of prepupae and 30
Externí odkaz:
https://doaj.org/article/a7ab23a9fe6946e8b5e8c223604419a6
Publikováno v:
Plant, Soil and Environment, Vol 63, Iss 2, Pp 76-81 (2017)
Small-plot trials conducted in 2013-2015 studied the impact of longer vegetation periods (by means of earlier drilling and/or later harvest) on production results of two sugar beet cultivars - one nematode-tolerant cultivar and one cultivar without s
Externí odkaz:
https://doaj.org/article/caece720a36a4700bf3070b464079829
Autor:
Zdeňka Urbanová, Jaroslav Urban
Publikováno v:
Acta Universitatis Agriculturae et Silviculturae Mendelianae Brunensis, Vol 64, Iss 5, Pp 1675-1696 (2016)
The study deals with the biology of Attelabus nitens (Scop.) in the Brno region. In the growing season of 2014, 35 field inspections were made at 10 sites in the intervals of three‑to‑seven days. Leaf rolls were found on Quercus petraea, Q. dalec
Externí odkaz:
https://doaj.org/article/8210c92c42a84b28996ea2ed0b01631f
Autor:
Jaroslav Urban
Publikováno v:
Acta Universitatis Agriculturae et Silviculturae Mendelianae Brunensis, Vol 63, Iss 5, Pp 1601-1624 (2015)
In 2012 and 2013, was studied the occurrence, biology and harmfulness of Byctiscus betulae (L.) (Rhynchitidae) on forest woody plants in the Brno region. Leaf rolls were found on 13 species (and 10 genera) of woody plants. Most frequently, they occur
Externí odkaz:
https://doaj.org/article/56c2063b52164f39b4ff6b70180ad025
Autor:
Jaroslav Urban
Publikováno v:
Acta Universitatis Agriculturae et Silviculturae Mendelianae Brunensis, Vol 62, Iss 5, Pp 1141-1160 (2014)
Hazel-leaf roller weevil (Apoderus coryli /L./) is a noteworthy species from the perspective of biology and forestry; it belongs to the family Attelabidae. Its occurrence, development and harmfulness were studied in surroundings of Brno city in 2011
Externí odkaz:
https://doaj.org/article/11c84bbef6374b3e9cb858b012c3bc2a