Wpływ poziomu nawożenia azotem na wysokość i jakość plonów ogórka oraz jego przydatność do konserwowania i kwaszenia
AbstractIn the years 1972-1974 investigation was carried out on the effect of several levels of mineral nitrogen /the rates being 0-200 kg/he/on yields and some morphological and anatomical traits of cucumbers. The chemical composition and canning qualities of cucumbers were determined in fresh fruit and after 3 days of storage. Field experiments were conducted on the soil the mechanical composition of loam duet. The cucumbers were grown on stable manure at the rate of 300 of/ha ploughed in in autumn, the continuous mineral fertilization being 110 kg/ha P205 and 150 kg/ha K2O. The measurements of morphological and anatomical features of fruit and the analysis of the content of particular chemical components were carried out at 3 dates: at the beginning and at full harvest and at the end of this period. The cucumbers taken for the chemical analyses and the anatomical evaluation were 75-85 ma long and of uniform shape. Processed pickles were made at the beginning and at the end of the period of harvest, while the fresh pickles were prepared in full fruiting of plants. After 6 months the organoleptic evaluation of products and the measurements of ODES physical features of pickles were carried out. The investigation showed that in the individual years of experiments the climatic conditions during the vegetation period modified the effect of the level of nitrogen fertilisation on the morphological features of plants, morphological and anatomical features of fruit, yields of cucumbers, chemical composition of fruit, and the quality of fresh and processed pickles. The level of nitrogen fertilization influenced the variability in morphological and anatomical features of fruit. Increasing rate of nitrogen resulted in greater coefficients of shape, the skin of cucumbers was thinner, while the parenchymal cells grew larger, especially near the core of fruit. A marked influence of the level of nitrogen fertilization on the yields was noted: the yields increased at greater retes of nitrogen, the highest ones being obtained at the rates of 120-200 kg N/ha, however, the amounts of nitrogen higher than 120 kg/ha did not increase the yields significently The level of nitrogen fertilization influenced the content of certain chemical components in cucumber fruit: greater doses of nitrogen resulted in increased content of total and nitrate nitrogen. The content of dry matter and sugars aim slightly changed, while the content of phosphorus and potassium was slightly decreased. The quality of processed cucumber pickles depended on the freshness of raw vegetable, date of pickling, and the level of nitrogen fertilization. The highest quality was noted with pickles prepared immediately after harvest, at the beginning of the harvest period, and at the fertilization rate of 80-120 kg N/ha. The quality of fresh pickles closely depended on the freshness of cucumbers and in a less degree on the level of the nitrogen fertilization. The highest quality was noted in fresh pickles prepared immediately after harvest and at the fertilization rate of 80 and 120 kg/ ha. The quality was lightly poorer with other levels of the fertilization. The fertilization rate higher than 160 kg N/ha resulted Indistinctly poorer firmness of pickles and an increased tendency to empty chambers, while the flavour of the product remaind unchanged.
|Other language title versions||The effect op nitrogen fertilization on yields and quality of cucumbers and on the quality op fresh and processed pickles|
|Publisher||Uniwersytet Rolniczy im. Hugona Kołłątaja w Krakowie, MNiSW |
|Publishing place (Publisher address)||Kraków|
|Book series /Journal (in case of Journal special issue)||Zeszyty Naukowe Uniwersytetu Rolniczego im. Hugona Kołłątaja w Krakowie. Rozprawy, ISSN 1899-3486, (0 pkt)|
|Publication size in sheets||4.7|
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