Tag Archives: bulb

xxx O. Zavadska, І. Bobos, I. Fedosiy, H. Podpriatov, O. Komar, B. Mazur and J. Olt
Suitability of various onion (allium cepa) varieties for drying and long-term storage
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Suitability of various onion (allium cepa) varieties for drying and long-term storage

O. Zavadska¹, І. Bobos¹, I. Fedosiy¹, H. Podpriatov¹, O. Komar¹, B. Mazur¹ and J. Olt²*

¹National University of Life and Environmental Sciences of Ukraine, 15 Heroyiv Oborony Str., UA 03041 Kyiv, Ukraine
²Estonian University of Life Sciences, Institute of Technology, 56 Kreutzwaldi Str., EE 51006 Tartu, Estonia
*Correspondence: jyri.olt@emu.ee

Abstract:

In the paper, the results are presented obtained in the research into the fresh bulbs and the dried products of 9 onion varieties cultivated in the conditions of the Ukrainian Forest Steppe area with regard to their economical biology, biochemical, marketability and organoleptic indices. The varieties that are most suitable for convection drying and long-term storage have been identified. It has been established that the marketability of both the fresh bulbs and dried products depends on the masses of the bulbs. The Bronze d’Amposta and Harmony varieties deliver the greatest amount of marketable output (94.0 and 93.2%) featuring marketable bulbs with masses of 67.4 g and 70.4 g, respectively (r = 0.82). As the bulb mass increases, the amount of non-standard (r = 0.81) and small (r = 0.76) particles in the dried product decreases substantially. It has been found that the content of solid matter and sugars in fresh bulbs has effect on the yield and quality of the dried and reconstituted products. The Harmony and Skvirskaya varieties, the bulbs of which during the vegetation season build up 12.9% and 13.8% of solid matter, respectively, are distinguished by the highest dry product yield – 17.1 and 16.8%, respectively. Correlation has been established between the contents of solid matter and sugars in fresh bulbs (r = + 0.58). During the tasting of reconstituted onion products, the highest scores were awarded to the samples produced from the Skvirskaya and Harmony varieties – 7.0 points each on the 9-point scale, as their bulbs had accumulated over 7.0% of sugars (total). Judging by the aggregate of the researched indices, the Harmony and Skvirskaya varieties of onions are the most suitable for convection drying. It has been established that the preservation of onions in the conditions of stationary buried storage without artificial cooling depends on the duration of storage and the specific varietal features. Within the five months of the test storage, the preservation of bulbs of all the varieties was high and varied within the range of 80–93%. Longer storage is expedient only in case of the Harmony, Skvirskaya and Gospodinya, for which the bulb preservation rates for a seven month storage period has been shown to be equal to 90.2, 88.4 and 87.2%, respectively. It has been proved that the quantity of healthy bulbs depends to a significant extent on the solid matter content in the bulbs (r = 0.93).

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xxx L. Lepse, S. Zeipiņa, I. Missa and A. Osvalde
The effect of cultivation technology on the plant development of organically grown garlic
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The effect of cultivation technology on the plant development of organically grown garlic

L. Lepse¹*, S. Zeipiņa¹, I. Missa¹ and A. Osvalde²

¹Institute of Horticulture, Graudu iela 1, LV–3701 Dobele, Latvia
²Institute of Biology, University of Latvia, Ojāra Vācieša iela 4–201, LV–1004 Rīga, Latvia
*Correspondence: liga.lepse@llu.lv

Abstract:

The new technological solutions for the hardneck garlic production were tested to prevent the influence of unfavourable soil and climatic conditions on the rooting, sprouting and wintering ability of hardneck garlic – factors that affect significantly the hardneck garlic production in Latvia. Field studies were carried out at the experimental field of the organic farm, located at the Koknese district, Latvia, during the seasons of 2018/2019 and 2019/2020, on sandy loam soil using hardneck garlic cultivar `Liubasha` and local clones. Two variants of garlic growing were compared – traditional planting in the autumn in the field as control, and planting in the trays as an innovative solution. Results indicated that low temperature treatment (below +7 °C) for the period of at least 50 days initiates cloves primordia development. The using of trays is effective technology to prevent unfavourable agroecological conditions on the field in the case if controlled conditions are available and technically feasible in the farm.

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2245-2258 O. Ulianych, V. Yatsenko, P. Kondratenko, O. Lazariev, L. Voievoda, O. Lukianets and D. Adamenko
The influence of amino acids on the activity of antioxidant enzimes, malonic dialdehyde content and productivity of garlic (Allium Sativum L.)
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The influence of amino acids on the activity of antioxidant enzimes, malonic dialdehyde content and productivity of garlic (Allium Sativum L.)

O. Ulianych¹, V. Yatsenko¹*, P. Kondratenko², O. Lazariev¹, L. Voievoda¹, O. Lukianets¹ and D. Adamenko¹

¹Uman National University of Horticulture, Faculty of Horticulture, Ecology and Plants Protection, Department of Vegetable Growing, Department of Plant Protection and Quarantine, Faculty of Management, Department of Ukrainian and Foreign Languages, Instytutska street, 1, UA20300 Uman, Ukraine
²The National Academy of Agrarian Sciences, Mykhayla Omelyanovycha-Pavlenka street, 9, UA01010 Kyiv, Ukraine
*Correspondence: slaviksklavin16@gmail.com

Abstract:

The research was carried out in 2017–2019 in the conditions of the Right-Bank Forest Steppe of Ukraine. The results of study, the effect of spraying by certain amino acids; salicylic (300 ppm), gibberellin (150 ppm) and ascorbic acids (200 ppm) on garlic (Allium sativum L.) plants are presented in the article. It was found that amino acid solutions improves the antioxidant state: the activities of SOD, CAT, POD, GR, GST in treated leaves tended to increase, the activity of SOD was higher than the control of 7.5–15.0%; CAT (27.4–45.9%); POD (7.0–83.0%); GR (5.4–49.9%); and GST (14.8–41.3%). It was noted that the content of chlorophyll a+b in the leaves significantly increased (2.6–10.8%), The use of amino acids increased the accumulation of dry matter by 1.4–4.0%. The yield increase was 1.14–2.27 t ha-1 (7.7–15.3% compared to control). The content of B vitamins in the garlic cloves was greatly influenced by gibberellic acid, where increasing the amount of B vitamins reached to 21.9% relative to control The use of salicylic and ascorbic acids increased the amount of B vitamins by 7.6 and 8.2%, respectively. The most significant increasing of C vitamin content was observed by spraying of plants with ascorbic acid (+12.5%), whereas by spraying with salicylic and gibberellic acids its content increased by 6.0 and 7.5%, respectively. In the future, the data obtained can be used to reduce the impact of abiotic factors on the physiological state and productivity of garlic plants. Also, the obtained data will serve as a theoretical basis for producers in view of the purposes for which the products are grown (for sale in fresh form, processing or storage).

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1788–1799 O. Ulianych, V. Yatsenko, I. Didenko, N. Vorobiova, O. Kuhnyuk, O. Lazariev and S. Tretiakova
Agrobiological evaluation of Allium ampeloprasum L. variety samples in comparison with Allium sativum L. cultivars
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Agrobiological evaluation of Allium ampeloprasum L. variety samples in comparison with Allium sativum L. cultivars

O. Ulianych¹, V. Yatsenko¹*, I. Didenko¹, N. Vorobiova¹, O. Kuhnyuk¹, O. Lazariev² and S. Tretiakova³

¹Uman National University of Horticulture, Faculty of Horticulture, Ecology and Plants Protection Department of Vegetable Growing, Instytutska street, 1, UA20300 Uman, Ukraine
²Uman National University of Horticulture, Faculty of Management, Department of Ukrainian and Foreign Languages, Instytutska street, 1, UA20300 Uman, Ukraine
³Uman National University of Horticulture, Faculty of Agronomy, Department of Plant growing, Instytutska street, 1, UA20300 Uman, Ukraine
*Correspondence: slaviksklavin16@gmail.com

Abstract:

The purpose of investigation is to study the biological and morphological features, to establish the economic and valuable characteristics of the introduced and local forms of Allium ampeloprasum L. in comparison with Allium sativum L. and to study the effect of removal of the scape in the yield. The studies used field, statistical, settlement and analytical methods. The weight of the bulb without removing the inflorescence shoot of the cultivar Sofiivskyi was 28.4–53.3 g smaller than the variety samples No. 2 and No. 3 respectively. With removing the scape the difference increased by 60.5–68.6 g. The yield of No. 2 variety sample Allium ampeloprasum L. without removing the scape was lower than the standard by 1.7 t ha-1 while the variety sample No. 3 exceeded the standard by 1.1 t ha-1. With the removal of inflorescence shoot the yields of variety samples No. 2 and No. 3 exceeded the cultivar Sofiivskyi by 1.6 and 2.2 t ha-1. It has been established according to the researches that introduced forms of Allium ampeloprasum L. have high indicators of economic and valuable characteristics, but they are limited in the first years of cultivation, by the period of adaptation to the new soil and climatic conditions.

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