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Asparagus (Asparagus officinalis L.) may be cultivated either for white or for green spears, the latter method started to prevail in the world in the last years. The aim of the study was a comparison of yielding of white and green asparagus cv. ‘Ravel’ in the open field and in the PE tunnel. The weight, number and diameter of spears in the total, marketable and non-marketable yields in the first and...
In many countries, the traditional method of growing shallots from bulbs is replaced by direct seeding in the field or by planting seedlings. The availability of shallot seed with high parameters of the sowing value is an important condition for growing shallot in larger areas. It is possible thanks to the progress in breeding and introduction into cultivation of new cultivars that produce seed stalks...
The aim of this study, conducted in the years 2010– 2012, was to evaluate bolting and seed production of shallot depending on storage temperature of steckling bulbs with different diameters. The present study included 4 cultivars (‘Toto’, ‘Ambition F1’, ‘Bonilla F1’, and ‘Matador F1’) and one local population (‘U’). Bulbs with the following diameters: 20–30 mm, 31–40 mm, 41–50 mm, and 51–60 mm, were...
Up-to-date production of shallots for commercial purposes was limited due to low supply of the seeding material as well as no breeding cultivars that would produce seeds. Local populations commonly grown in various countries are reproduced mainly in vegetative way, because they usually do not produce generative shoots nor seeds, or they are formed, but in a very reduced number. The aim of this study,...
Shallot is one of the vegetables, which are especially abounding in flavonoids, phenolic acids and other compounds with antioxidative properties. Among Allium vegetables it is also distinguished with good storage ability. The studies conducted in the years 2007–2009 included the assessment of dry matter, flavonoids and phenolic acid contents in shallot bulbs immediately after harvest and drying off,...
Studies carried out in 2003–2005 included determinations of free phenolic acids content in edible parts (shoots, pseudostem) of onion, shallot, and Welsh onion grown for green bunching in the field and forced in the greenhouse. Plants for phenolic acids contents analyses were achieved from setting the small bulbs (common onion, shallot) or annual plants from the seedling setting in the case of Welsh...
The purpose of this work was the evaluation of yielding and the content of some chemical ingredients of Japanese bunching onion yield obtained from forcing in greenhouse conditions. Plants used for forcing were from field cultivation and had the pseudostem trimmed in the autumn of each year (2002, 2003 and 2004) at the height of 2-4 and 8-10 cm. In the spring of the following year (2003, 2004 and...
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