EVALUATION OF CONTENT OF SELECTED MACRO- AND MICRONUTRIENTS IN EDIBLE PARTS IN WINTERING ONION CULTIVATED FOR BUNCHES
Journal Title: Folia Pomeranae Universitatis Technologiae Stetinensis Agricultura Alimentaria Piscaria et Zootechnica - Year 2018, Vol 45, Issue 340
Abstract
An advantage of overwintering onion in the field is the possibility of earlier supply of fresh, field-cultivated onion to the market. Many experiments with onion wintering in the fields have been conducted in Poland recently. Earlier market supply of fresh onion grown in the field is an undoubted advantage of that method. Early onions with green leaves foliage is an attractive vegetable and is characterized by greater biological value than onion stored for a long time. It is a very rich source of components important in human nutrition. The aim of the research was to evaluate content of macronutrients: total nitrogen, phosphorus, potassium, calcium, magnesium and sulphur as well as selected micronutrients (manganese, iron, copper and zinc) in edible parts (leaves foliage and bulb) of wintering onion cultivar Amigo F1 depending on the method of cultivation (growing under polypropylene non-woven covering and without covers – control object). On the basis of obtained results, different content of mineral components depending on kind of eatable part of plant was found. Significantly higher content of total nitrogen (on the average 28.73 g ka–1 d.m.), potassium (on the average 42.22 g kg–1 d.m.), calcium (8.77 g kg–1 d.m.), magnesium (on the average 2.21 g kg–1 d.m.) and sulphur (3.37 g kg–1 d.m.) was found in leaves foliage in comparison with unripe bulbs. Also significantly higher content of manganese (on the average 28.97 mg kg–1 d.m.), iron (459.85 mg kg–1 d.m.) and copper (on the average 6.67 mg kg–1 d.m.) was found in leaves foliage than in bulbs. Method of winter onion cultivation with plants covering with non-woven PP 17 affected the increase of content of magnesium, sulphur, manganese, iron and copper in comparison with method of cultivation without covers.
Authors and Affiliations
Ewa REKOWSKA, Barbara JURGA-SZLEMPO, Agnieszka ŻURAWIK
Keywords
Related Articles
- EP ID EP412476
- DOI -
- Views 64
- Downloads 0
POLISH CONSUMERS’ AWARENESS AND KNOWLEDGE ABOUT FUNCTIONAL FOOD
Nowadays, we observe an increase in the incidence of lifestyle diseases. Consumers expect higher quality as well as additional features in food products. It is an effect of increasing awareness about the possibility of r...
THE OCCURENCE OF THE EURASIAN OTTER LUTRA LUTRA IN AQUATIC HABITATS OF DIFFERENT TROPHY IN WIGRY NATIONAL PARK
The standard method was used for the first field survey of the Eurasian otter Lutra lutra distribution in all aquatic habitats in Wigry National Park (WNP) in northern Poland. Total of 59 study sites (48 on lakes, 8 on r...
INFLUENCE OF THE AGE ON THE DAY OF FIRST CALVING AND THE LENGTH OF CALVING INTERVALS ON THE MILK YIELD OF COWS
The study involved 264 Holstein-Friesian cows with a performance of more than 10 000 kg of milk that were kept in one of the largest farms in Wielkopolskie voivodeship in Sano Agrar Institute in Lubień. One determined th...
THE USE OF GENETIC MARKERS IN THE FIGHT AGAINST MASTITIS
The purpose of the paper was to characterize mastitis, present different methods of treatment and prevention of emergence of mastits. Conventional methods include hygiene during milking and after it, the cleanliness in t...
ASSESSMENT OF AGRO-METEOROLOGICAL CONDITIONS OF THE VEGETATION PERIOD IN 2015 IN THE SZCZECIN LOWLAND
The present study presents the analysis of thermal and pluviometric conditions on the basis of selected agro-meteorological indices in the vegetation period (IV–X) in 2015 in the Szczecin Lowland against the reference pe...