Tag Archives: fruit weight

2785–2796 M. Vinogradov,, R. Rätsep, and L. Arus
Suitability of blue honeysuckle (Lonicera caerulea L.) cultivars of different origin for cultivation in the Nordic-Baltic climate
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Suitability of blue honeysuckle (Lonicera caerulea L.) cultivars of different origin for cultivation in the Nordic-Baltic climate

M. Vinogradov¹,*, R. Rätsep¹,² and L. Arus¹

¹Polli Horticultural Research Centre, Institute of Agricultural and Environmental Sciences, Estonian University of Life Sciences, Uus 2, EE69108 Viljandi county, Estonia
²Estonian University of Life Sciences, Institute of Veterinary Medicine and Animal Sciences, Chair of Food Science and Technology, Kreutzwaldi 1, EE51006 Tartu, Estonia

Abstract:

The rising trend of blue honeysuckle has led to the increase in new plantations and berry production in recent years in Nordic-Baltic region, including Estonia. This crop is naturally distributed in the temperate climate zone of Northern Hemisphere. Estonia is also located in the same climate zone, but differs only from warm maritime air. The main aim of this research was to find out cultivars’ adaptation to the changing weather conditions regarding winter hardiness, fruit weight, yield and occurrence of secondary flowering. The data was recorded from two closely situated plantations in Polli village, Viljandi County, Estonia. Eighteen cultivars of blue honeysuckle with different origin (Russia, Canada, Poland and Czech Republic) were tested. In 2016, greater winter damage was recorded when compared to the period of 2017–2020 with just marginal damage. In conclusion, the Canadian cultivars (‘Borealis’, ‘Indigo Gem’, ‘Indigo Treat’ and ‘Tundra’) and Polish ‘Duet’, presented their best properties and suitability to Estonian climatic conditions.

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583-588 H. Jänes, P. Ardel, K. Kahu, K. Kelt and A. Kikas
Some biological properties and fruit quality parameters of new sweet cherry cultivars and perspective selections
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Some biological properties and fruit quality parameters of new sweet cherry cultivars and perspective selections

H. Jänes, P. Ardel, K. Kahu, K. Kelt and A. Kikas

Polli Horticultural Research Centre, Institute of Agricultural and EnvironmentalSciences, Estonian University of Life Sciences, 69108 Karksi–Nuia, Estonia;e-mail: pille.ardel@pma.agri.ee

Abstract:

Twelve Estonian sweet cherry cultivars: ‘Anu’, ‘Arthur’ (control), ‘Elle’, ‘Ene’, ‘Irma’, ‘Kaspar’, ‘Mupi’, ‘Tontu’, ‘Elo’, ‘Jaago’, ‘Taki’, ‘Tiki’ and two selections: Polli 2–1 and Polli 4–13 as well as two introduced cultivars ‘Iputj’ (Russia) and ‘Jurgita’ (Lithuania) were evaluated for yield, ripening time, fruit weight and biochemical characteristics during 2007–2009 at the Polli Horticultural Research Centre. Results showed that the earliest ripening among the all studied genotypes was ‘Elo’ (16.06), while the latest one was Polli 2–1 (29.07). Average of the three years yields ranged from 6.0 kg per tree for cultivar ‘Jurgita’ to 20.1 kg per tree for cultivar ‘Arthur’. The largest fruits showed cultivars ‘Iputj’ (6.5 g) and ‘Jurgita’ (6.0 g), followed by ‘Arthur’, ‘Anu’ and ‘Mupi’ while the smallest fruits showed ‘Elo’ (3.2 g). The average °Brix value in fruit juice varied by the genotypes from 14.6 (‘Tiki’) to 19.6 (‘Anu’), average of all the genotypes was 17.1. The average total acids content ranged from 0.50% in ‘Iputj’ to 0.75% in ‘Ene’ while the total sugar content ranged from 7.7% in ‘Jurgita’ to 11.2% in ‘Arthur’. The ascorbic acid content ranged from 13.8 mg 100 g-1 in ‘Jaago’ to 24.8 mg 100 g-1 in ‘Anu’. The sugar:acid ratio was considerably high in ‘Iputj’, ‘Kaspar’, ‘Arthur’, ‘Anu’ and ‘Mupi’ (from 17.9 to 20.3). The most attractive were fruits of the cultivars ‘Iputj’, ‘Jurgita’, ‘Mupi’ and ‘Arthur’ (from 4.7 to 4.8 points).

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363-368 J. Lanauskas, A.Valiuškaitė, N. Kviklienė, A. Sasnauskas and N. Uselis
Assessment of apple cultivars for organic fruit cultivation
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Assessment of apple cultivars for organic fruit cultivation

J. Lanauskas, A.Valiuškaitė, N. Kviklienė, A. Sasnauskas and N. Uselis

Lithuania, Lithuanian Institute of Horticulture, Orchard management department, Kauno 30,LT-54333 Babtai, Kaunas distr., Lithuania; e-mail j.lanauskas@lsdi.lt

Abstract:

In 2005–2008 apple tree cultivars and selections were tested at the Lithuanian Institute of Horticulture in an organic apple tree orchard. Apple trees on rootstock B.396 were spaced at distances of 4 x 2 m; the orchard floor was a cultivated soil. The bioinsecticide Bioshower against aphids was applied once a year, fungicides were not used. Apple trees of cultivars. ‘Pilot’ and ‘Pinova’ were significantly affected by apple scab (Venturia inaequalis Cke. Wint), and ‘Lodel’ – by apple powdery mildew (Podosphaera leucotricha (Ellis et Everh.) Salm).Apple trees of the cultivar. ‘Aldas’ and selection 18501 were the most vigorous. In 2007–2008 the greatest average yield was from the cultivars ‘Florina’, ‘Rosana’, selections 20,490 and 22,1709.1–14.7 t ha-1. These same cultivars and selections were the most yield efficient. The greatest average fruit weight was from cultivar. ‘Witos’ (272 g), the smallest from the cultivars ‘Pilot’, ‘Pinova’, ‘Goldrush’ and ‘Lodel’ (111–137 g). The highest taste score was from ‘Goldstar’, ‘Rubinola’, ‘Topaz’, ‘Rajka’ and ‘Lodel’ apples.

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