Naslov
Effects of nitrogen nutrition upon the quality and yield of head chicory (Cichorium intybus var. foliosum L.)
(Ćustić Mirjana, Toth Nina, Poljak M., 2000. Effects of nitrogen nutrition upon the quality and yield of head chicory (Cichorium intybus var. foliosum L.))

Autori
Herak Ćustić, Mirjana ; Toth, Nina ; Poljak, Milan

Izvornik
Acta Horticulturae (0567-7572) 533 (2000), 533; 401-403

Vrsta, podvrsta i kategorija rada
Radovi u časopisima, članak, znanstveni

Ključne riječi
proteins; vitamins; essential mineral elements

Sažetak
Influence of nitrogen fertilisation upon the quality and yield of head chicory (Cichorium intybus L. var. foliosum) was investigated in several years long field trials involving eight fertilising variants. Investigation results indicate that nitrogen application influenced the differences in the contents of dry matter (4, 23 - 5, 30 %), plant nitrogen (3, 33 - 4, 95 % N) and crude proteins (N x 6, 25). Dry matter phosphorus ranged between 1, 20 and 2, 11 % P205 while values from 4, 25 to 5, 68 % K20 were determined for potassium. Chicory yields varied from 1, 29 to 2, 6 kg/m2. Head chicory quality, that is its overall nutritional value, was estimated relative to the quantity of essential mineral elements (calcium, magnesium, iron, zinc and copper) as well as some vitamins and essential amino acids. Red head chicory contains a particularly favourable quantity of calcium (20 mg Ca) and iron (1, 5 mg Fe) in 100 g in fresh weight (F.W.). As regards vitamins, 14, 06 mg of vitamin C and 0, 42 mg of carotene were determined in 100 g of F.W.. A very high content of some essential amino acids, especially methionine, was recorded.

Izvorni jezik
Engleski

Znanstvena područja
Poljoprivreda (agronomija)

POVEZANOST RADA