Preferencje help
Widoczny [Schowaj] Abstrakt
Liczba wyników

Znaleziono wyników: 5

Liczba wyników na stronie
first rewind previous Strona / 1 next fast forward last
Wyniki wyszukiwania
Wyszukiwano:
w słowach kluczowych:  peach
help Sortuj według:

help Ogranicz wyniki do:
first rewind previous Strona / 1 next fast forward last
EN
Spring frost in the blooming time can be a significant factor decreasing the fruit production and affects the cultivation profitability in the years with unfavourable weather conditions. In Poland, the fruit trees especially susceptible to damage are peach and apricot trees. Among the popular methods of protecting the trees against spring frost damage there are three kinds of treatment: sprinkling irrigation, fogging, smoking and using fans for mixing the layers of air. The costs of applying the particular methods differ, as well as their efficiency. The side effect of using them can be also orchard pollution. The experiment was conducted on selected peach tree cultivars, on two rootstocks. Two methods of spring frost protection were applied: sprinkling irrigation and fogging with the use of glycerin mixed with tap water in proportion 1:10. Sprinkling irrigation proved to be more effective, it protected 98% of blooms. Using the fogging device also brought a satisfying effect. The cultivars that were easily damaged by spring frost were ‘Early Redhaven’ and ‘Cresthaven’. The greatest resistance to bloom damage was observed in the case of the ‘Suncrest’ and ‘Saturn’ trees. The yielding of the ‘Inka’ and ‘Early Redhaven’ trees protected by sprinkling irrigation was significantly better, as compared with the fogged trees. The mean fruit weight was determined mainly by the cultivar.
PL
W artykule przedstawiono wartości udziału procentowego poszczególnych kwasów tłuszczowych w pestkach owoców, a także przeprowadzono analizę skupień otrzymanych wyników. Materiałem badawczym były pestki wybranych owoców pestkowych: czereśni, wiśni, moreli, brzoskwini i śliwy (odmiany: mirabelka, renklody, owalne, jajowe oraz węgierki). Badania wykonano za pomocą chromatografu gazowego HP Agilent 6890 GC-FID w Instytucie Hodowli i Aklimatyzacji Roślin – Państwowym Instytucie Badawczym w Poznaniu. Wyniki badań wykazały, że najwięcej nienasyconych kwasów tłuszczowych zawiera czereśnia. Przeprowadzona analiza statystyczna wykazała ponadto, że śliwa mirabelka i śliwa jajowa mają zbliżony metabolizm wytworzenia – udziału procentowego kwasów tłuszczowych w stosunku do odległych odmian: śliwy renklody, wiśni i czereśni.
EN
The article presents the percentage share of selected fatty acids in fruit stones, along with the analysis of concentration of the obtained results. The research material used were stones of selected type of fruit, namely: sweet cherry, cherry, apricot, peach, plum (cultivars: Mirabelle, Greengage, intermedia oxycarpa, intermedia ovoidea, Damson). The research was carried out in the Poznań Branch of Plant Breeding and Acclimatization Institute of the National Research Institute using a gas chromatograph HP Agilent 6890 GC-FID. The results of the research have shown, that the highest amount of unsaturated fatty acids is present in the stone of sweet cherry. The carried out statistical analysis has proven, that, the plums Mirabelle and intermedia ovoidea are characterized by similar metabolism - as far as the percentage share of fatty acids goes, in relation to the more distant Greengage plum, cherry and sweet cherry.
3
Content available Analysis of convectional drying process of peach
EN
In this study the convectional drying process of peach were investigated. Peaches were cut longitudinally into eight similar pieces and were dried in a laboratory air-drier with forced horizontal air flow. Drying experiments were carried out at temperatures of 50, 60, 70oC and for two air velocities: 1.0 and 1.2 m/s. The results are shown graphically on the charts. It was found that a greater effect on increasing the rate of drying is the drying air temperature than the increase in flow velocity. The verification of theoretical models of the first and second drying period indicates that the drying process of peach is determined by internal conditions of heat and mass transfer, therefore to describe the drying process were used models of the second period of drying. Global relative error calculated for the whole process was less than 5%.
PL
Doświadczenia polowe z nawadnianiem i nawożeniem mineralnym brzoskwini przeprowadzono na glebie lekkiej w latach 2002-2003. Oceniano wpływ czynników doświadczenia między innymi na aktywność biologiczną gleby, określając między innymi liczebność bakterii, promieniowców oraz grzybów.
EN
Experiments with irrigation and mineral fertilization of peach trees grown on sandy soil were conducted in 2002-2003 years. The influence of both treatments on the soil biological actinity was tested, mainly on the number of some species of bacteria, actinomycete and fungi.
PL
W pracy zawarto trzyletnie wyniki badań dotyczących wpływu nawadniania podkoronowego i nawożenia mineralnego na wielkość i jakość plonu owoców brzoskwini. Stwierdzono m.in., że nawadnianie, jak i nawożenie mineralne spowodowały istotny wzrost plonu owoców. Ponadto wzrost uwilgotnienia gleby różnicował skład chemiczny liści i owoców brzoskwini.
EN
Results of 3-year experiments with peaches grown on sandy soil. The applied irrigation and fertilizer significantly increased yield and macro-and microelement content in peach leaves and fruit.
first rewind previous Strona / 1 next fast forward last
JavaScript jest wyłączony w Twojej przeglądarce internetowej. Włącz go, a następnie odśwież stronę, aby móc w pełni z niej korzystać.