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The CIELab colour system is used to evaluate food colours. Its advantage is that the base skin colour of bicoloured apples can be measured on the same fruit before and on the optimum harvest date. Additionally, it makes it possible to take many measurements within a short time. The changes of skin colour (yellowing) are caused by chlorophyll degradation. During fruit development and maturation chlorophyll...
The problem of soil fatigue occur in polish orchards more and more often. This problem can cause to lower profitability of the production. Studies were carried out in an experimental orchard in the years 2008–2010. The objective of the presented studies was the determination of the earlier applied method of soil utilization on the growth and yield of `Topaz` apple-tree cultivar. Apple-trees were planted...
The objective of studies carried out in years 2002–2009 was to determine the effect of nitrogen fertilization on the content of mineral components in the leaves of cherry trees and on the changes in assimilable components in the arable and subarable soil layers. Cherry orchards were established in spring 1999, 2001 and 2002 with the application of ‘Łutówka’ cultivar, type IR2. In the orchards planted...
Studies were carried out in the years 2008–2009 in the Experimental Orchard of Fruit Growing Department, on the area of RSGD in Przybroda. Apple-trees of ‘Topaz’ cultivar on M.26 rootstock were planted in five soil localities: 1 – directly in grubbed up rows of an apple-tree orchard, 2 – in herbicide fallow belts of grubbed up apple-tree orchard, 3 – in turf belts of grabbed up apple-tree orchard,...
Studies were carried out in an experimental orchard in the years 2008–2009. Apple-trees of ‘Topaz’ cultivar were planted in five “soil localities”: 1 – directly in grubbed up rows of an apple-tree orchard, 2 – in herbicide fallow belts of grubbed up apple-tree orchard, 3 – in turf belts of grabbed up apple-tree orchard, 4 – in a locality after a four-year break in apple-tree cultivation, without any...
Badania przeprowadzone zostały w latach 2007-2008 w Katedrze Sadownictwa Uniwersytetu Przyrodniczego w Poznaniu w hali wegetacyjnej. Materiałem badań były truskawki odmiany Elsanta (sadzonki kopane), które wysadzono do skrzyń korzeniowych (rizoboksów) o wymiarach 37 x 18 x 7 cm i pojemności 5,7 kg gleby. W doświadczeniu wykorzystano glebę z trzech różnych sadów o zróżnicowanym stopniu zmęczenia: 1...
Badania zostały przeprowadzone w sadzie Terenowej Stacji Doświadczalnej Katedry Sadownictwa Uniwersytetu Przyrodniczego w Poznaniu położonym na terenie RSGD w Przybrodzie. Jesienią 2008 roku po zakończeniu zbiorów wykarczowano 30 letni sad jabłoniowy, a stanowisko to zostało przeznaczone do zastosowania replantacji. Wiosną 2008 roku rozpoczęto badania biochemiczne gleby określając m.in. aktywność...
Badania przeprowadzone w latach 2006-2007 w Katedrze Sadownictwa Uniwersytetu Przyrodniczego w Poznaniu na terenie RSGD w Przybrodzie. Materiałem badań były podkładki dla jabłoni M.9 oraz dla wiśni - antypka, które wysadzono do skrzyń korzeniowych (rizoboksów) o wymiarach 70 x 37 x 15 cm. Obiektem badań była podkładka M.9, którą wysadzono w skrzyniach korzeniowych. Rośliny, po 8 w każdej kombinacji...
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