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The experimental studies were conducted from 2015–2017 years in two cycles. The aim of the research was to determine a better grafting time and a choice of an appropriate rootstock for the propagation of two cultivars of mountain pine (Pinus mugo Turra). The influence of the grafted cultivar and rootstock used on the level of chloroplast pigments in the needles was also checked. The studies concerned...
Experimental studies were conducted in 2015–2017 in the Department of Dendrology, Pomology and Nursery of Poznan University of Life Sciences. The aim of the research was to study the usefulness of three rootstocks: Larix decidua, Pinus armandii, Cedrus deodara and two grafting methods: side grafting and split grafting for propagation purposes of Cedrus deodara ‘Karl Fuchs’. In addition, it was evaluated...
Cultivation of sweet cherry trees is growing in popularity in Poland thus there is an increasing demand for good quality nursery material. The growth of maiden sweet cherry trees of ‘Vanda’ depending on three rootstocks was compared within three years of the nursery experiment. Also the nutritional status as well as photosynthetic activity of maiden trees after the use of four foliar preparations...
Exogenous gibberellins GA3 and GA4+7 treatments on ‘English Morello’ sour cherry trees 58 days after anthesis were evaluated in relation to their effect on fruit firmness, size distribution, colour development, titratable acidity to firmness ratio, yield, efficiency indices as well as leaf fall senescence. Moreover in the season following the applications their effect on flower bud characteristics...
Environmental protection imposes strict limitations in using fertilizers and plant protection products. This is why there is a need for research on using plant products in horticultural production. In the experiment conducted in the years 2009–2012 the influence of spraying of maiden pear trees with ERGOPLANT biostimulant was estimated. Growth of ‘Isolda’, ‘Conference’ and ‘Uta’ maiden pear trees...
In the years 2011–2013 growth and yielding of four cultivars of sweet cherry trees: Burlat’, ‘Regina’, ‘Summit’ and ‘Vanda’ were evaluated. All of them were grafted on new Mahaleb rootstocks obtained through softwood cuttings selected from a population of German seedlings of ‘Alpruma’ type in comparison with Mazzard seedling. Additionally an analysis of genetic variability of newly studied biotypes...
In a nursery production there are very few verified rootstocks diminishing the growth of sweet cherry trees in an orchard. An alternative solution is application of a dwarfing interstock. In the experiment the usefulness of a dwarfing interstock called ‘Frutana’ for the production of sweet cherry maiden trees was checked. The studies covered the following rootstocks: Prunus avium, and Colt and the...
In many countries, apart from creative cultivation, clone selection is also carried out to get the most valuable rootstocks for apple trees. In years 2008–2010, in the Department of Dendrology and Nursery Production of University of Life Sciences in Poznań, an experiment, which is described below, was conducted. Its aim was to estimate a degree of morphological, phenological and genetic variability...
In nursery production there are very few verified rootstocks for production of sweet cherry maiden trees. They do not always guarantee good growth results as well. GiSelA 5 and PHL-A seem to be very interesting ones, however, so far not well examined in a nursery. For a better adaptation of plants and improvement of condition for their growth, mycorrhizal fungus are used more and more often. In the...
In the world of orchard science there is a trend of constant limiting the size of fruit trees of almost all species. That is why there is a continuous search for new rootstocks reducing the vigour of growth of the cultivated plants. The experiment was conducted at the Experimental Station of the University of Life Sciences in Poznań, in the years 2008–2009. The aim of this study was to estimate of...
The experiment was conducted at the Experimental Station of the University of Life Sciences in Poznań, in the years 2005–2007. The aim of this study was to estimate the influence of a mycorrhizal vaccine on the growth of maiden sweet cherry trees of four cultivars: ‘Burlat’, ‘Regina’, ‘Summit’ and ‘Vanda’. Results of the study proved that the mycorrhizal vaccine did not have significant effect on...
In the experiment, carried out between 2005–2007, the influence of the application of two rootstocks and mycorrhizal vaccine on the growth of maiden trees and the trees of ‘Woodii’ cultivar in the third year after planting them into the ground was compared. A higher percentage of maiden trees was obtained on Prunus tomentosa rootstock when mycorrhizal vaccine was applied as well. The applied rootstocks...
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