Abstract
The aim of the investigations conducted in the years 2004–2006 in a production plantation of three hop cultivars was to evaluate the quality of cones depending on their position on the plant. Cones of particular cultivars (Izabella, Lomik and Marynka) were manually harvested from three heights of shoots separately: lower (up to 4 m), middle (4–5.5 m) and upper (above 5.5 m) at the time of their technical maturity. Based on these data, it was found out that the largest share of the total weight was constituted by cones collected from the middle part of the plants, followed by those from the upper (Izabella and Lomik) or lower parts (Marynka). The highest content of alpha-acids was observed in cones collected from the middle (Izabella and Marynka) and upper (Lomik) parts of the shoots, while the lowest content was reported from the bottom part. The yield of cones harvested was the highest in the Lomik cultivar plantation, whereas it was significantly lower in the Marynka and Izabella cultivars. Lomik cones had the lowest content of alpha-acids, while the Marynka cultivar was characterized by the highest amounts of alpha-acids. The alpha-acid content contributed to the yield of this component calculated per unit area: its lowest value was obtained from the Lomik cultivar and it was significantly higher in the plantations of Izabella and Marynka.
References
- Kargul K., 2006. Wpływ czynników siedliskowych i agrotechnicznych na zawartość alfa-kwasów w szyszkach chmielu w warunkach Lubelszczyzny. Masz. pr. dokt., AR Lublin, ss. 84.
- Kišgeci J., 2002., Hmelj. Beograd., ss. 368.
- Myślicka Z., 1962., Studia nad jakością chmielu (Humulus lupulus L.) na tle warunków klimatycz-nych. Pam. Puł., 6, 3–69.
- Nieróbca J., 1992., Agroklimatyczna bonitacja uprawy chmielu w Polsce. Masz. pr. dokt., IUNG Puławy, ss. 39.
- Migdal J., Socha Z., 1996. Wpływ czynników genetycznych i środowiskowych na jakość chmielu. Przem. Ferm. Owoc-Warz., 8, 5–7.
- Probasco G., 1997. Hop characteristics used to determine optimum harvest time. Proc. of the Tech-nic. Comm. IHGC, Prague, Czech Republic, 19–34.
- Rossbauer G., 2002., Hop production and hop advisory service. Bavarian State Research Centre for Agronomy and Society of Hop Research. Report 2001, 49–66.
- Studzińska-Jaksim P., 2004., Charakterystyka jakościowa szyszek chmielu w zależności od terminu zbioru i rozmieszczenia na roślinie. Masz pr. dokt., AR Lublin, ss. 118.
- Szewczuk C., 1987., Wpływ terminu zbioru szyszek chmielu na ich cechy jakościowe. Rocz. Nauk Roln., A, 107, 2, 183–191.
Downloads
Download data is not yet available.
-
Tomáš Lošák,
Barbara Wiśniowska-Kielian,
Fertilization of garlic (Allium sativum L.) with nitrogen and sulphur
,
Agronomy Science: Vol. 61 (2006)
-
Renata Czeczko,
Maria Mikos-Bielak,
Effects of Asahi bio-stimulator application in the cultivation of different vegetable species
,
Agronomy Science: Vol. 59 No. 3 (2004)
-
Barbara Kołodziej,
Stanisław Berbeć,
The effect of forecrop and soil disinfection on growth, disease infestation and quality of American ginseng
,
Agronomy Science: Vol. 59 No. 1 (2004)
-
PIOTR KRASKA,
SYLWIA ANDRUSZCZAK,
EWA KWIECIŃSKA-POPPE,
Reakcja odmian pszenicy orkisz (Triticum aestivum spp. spelta) na dokarmianie dolistne
,
Agronomy Science: Vol. 74 No. 2 (2019)
-
Piotr Barbaś,
Hakiye Aslan,
Imran Aslan,
Dominika Skiba,
Olutosin Ademola Otekunrin,
Barbara Helena Sawicka,
Prospects for using pesticides in agriculture
,
Agronomy Science: Vol. 78 No. 1 (2023)
-
Magdalena Serafin-Andrzejewska,
Waldemar Helios,
Anna Jama-Rodzeńska,
Andrzej Kotecki,
Marcin Kozak,
Piotr Zarzycki,
Beata Kaliska,
Effect of the depth and rate of sowing on the yield and yield components of determinate and indeterminate faba beans (Vicia faba var. minor L.) cultivars under conditions of Southwestern Poland
,
Agronomy Science: Vol. 77 No. 3 (2022)
-
MARIAN WESOŁOWSKI,
MARTA KOKOSZKA,
Elements of barnyard grass phenology in canopies of some crop plants
,
Agronomy Science: Vol. 62 No. 2 (2007)
-
AGNIESZKA ŁĄCKA,
KAMILA NOWOSAD,
JAN BOCIANOWSKI,
Evaluation of infection by leaf rust (Puccinia recondite f.sp. secalis) under artificial inoculation conditions in winter rye
,
Agronomy Science: Vol. 74 No. 3 (2019)
-
ZOFIA RZYMOWSKA,
JANINA SKRZYCZYŃSKA,
Selected biological features of Agrostemma githago L. and Centaurea cyanus L. at various habitats of the Siedlecka Upland
,
Agronomy Science: Vol. 62 No. 2 (2007)
-
Ryszard Baryła,
Evaluation of usefulness of Lolium perenne L. for pasture mixtures on peat-mursh soils
,
Agronomy Science: Vol. 60 (2005)
<< < 1 2 3 4 5 6 7 8 9 10 > >>
You may also start an advanced similarity search for this article.