Summary. In the production of fruit trees it is important to set up a nursery always in a new site, alternatively to follow crop rotation rules. It is not always possible due to the size of a farm and production volume. In order to limit the effects of replant soil one can use different procedures before setting up a nursery. Chemical methods, however, must be replaced with non chemical ones due to environmental protection and reduction of production costs. In the experiment conducted in 2009-2012, growth of maiden pear trees of 'Conference' growing on three quince MA, MC, S1 rootstocks, cultivated in replant and non-replant soil after the use of mycorrhizal treatment, was compared. The strongest growth of maiden pear trees was obtained on non-replant soil with mycorrhizal and without mycorrhizal treatment of rootstocks. Inoculation of rootstocks influenced positively the height and fresh mass of the root system of maiden pear trees growing on two considered sites. On the other hand, inoculation did not rise the diameter of stem and number of lateral shoots of the maidens. Influence of mycorrhizal treatment of rootstocks on the length of lateral shoots was not obvious. Significantly the best results of maiden pear trees growth, except for the stem diameter, were obtained on MA quince compared to two other types. The mycorrhizal treatment gave better result of percentage obtained by maiden pear trees only in the replant site. The best efficiency of maiden pear trees in nursery production was observed for MA quince rootstock.

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THE INFLUENCE OF TREATMENTS APPLIED TO COMMON NINEBARK (PHYSOCARPUS OPULIFOLIUS (L.) MAXIM.) 'DIABOLO' CUTTINGS ON THEIR ROOTING AND GROWTHWPŁYW KILKU SPOSOBÓW TRAKTOWANIA SADZONEK NA UKORZENIANIE I WZROST PĘCHERZNICY KALINOLISTNEJ (PHYSOCARPUS OPULIFOLIUS (L.) MAXIM.) ODMIANY 'DIABOLO' Abstract Background. As synthetic auxins are prohibited, it is necessary to conduct research to assess the suitability of other substances used for propagation of ornamental bushes to improve the rooting of cuttings and the growth of plants. The aim of the experiment was to compare the effectiveness of a mycorrhizal inoculum and effective microorganisms in the production of ninebark shrubs. Material and methods. Between 2010 and 2012 an experiment on Physocarpus opulifolius 'Diabolo' was conducted to assess how three different treatments applied to cuttings influenced their rooting and growth. Before hardwood cuttings were planted in a field, they had been treated with an endomycorrhizal inoculum, effective microorganisms and Ukorzeniacz AB Aqua. The diameter and length of the shoots were measured. The number of shoots was counted, the percentage of rooted cuttings was calculated and the fresh mass of the root system was weighed. Results. The mycorrhizal inoculum increased the percentage of rooted cuttings and gave the best results in the diameter and length of lateral shoots as well as the fresh mass of the root system of the bushes. The effective microorganisms (EM) resulted in the highest percentage of rooted cuttings and the largest number of lateral shoots. The EM preparation improved the diameter and fresh mass of the root system. The Ukorzeniacz AB Aqua improved the rooting of the cuttings and increased the diameter and fresh mass of the root system. Conclusions. The mycorrhizal inoculum improved the rooting of the cuttings and stimulated the growth of the shrubs. The effective microorganisms increased the percentage of rooted cuttings, as the Ukorzeniacz AB Aqua did, and improved the growth of the plants.Keywords: ninebark, propagation, hardwood cuttings, mycorrhizal inoculum, effective microorganisms (EM), Ukorzeniacz AB Aqua Świerczyński, S., Stachowiak, A., . The influence of treatments applied to common ninebark (Physocarpus opulifolius (L.) Maxim.) 'Diabolo' cuttings on their rooting and growth. Nauka Przyr. Technol., 11, 3,[315][316][317][318][319][320][321][322][323]

AbstraktWstęp. Mało jest wyników badań, w których porównuje się wzrost drzew ozdobnych otrzymanych różnymi metodami rozmnażania. Duża konkurencja wśród producentów wymusza stosowanie sposobów rozmnażania dających lepsze wyniki wzrostu drzew w szkółce. Celem wykonanego doświadczenia było porównanie wzrostu drzew brzozy brodawkowatej (Betula pendula Roth) 'Purpurea' rozmnażanych dwoma sposobami. Materiał i metody. Obserwacjom poddano drzewa rozmnażane tradycyjną metodą przez szczepienie oraz metodą kultur tkankowych in vitro. Wykonano pomiary: wysokości, średnicy pnia i pędów bocznych oraz ich długości, a także świeżej masy roślin. Wyniki. Drzewa brzóz otrzymane poprzez szczepienie charakteryzowały się większą średnicą pnia. Drzewa rozmnażane za pomocą kultur tkankowych wyróżniały się większą liczbą i długo-ścią pędów bocznych. Wysokość drzew, średnica pędów bocznych i świeża masa roślin nie różni-ły się istotnie w zależności od metody rozmnażania. Wnioski. Stwierdzono, że obie zastosowane metody rozmnażania są równie dobre i mogą być stosowane w praktyce szkółkarskiej. Należy w przyszłości określić koszty produkcji roślin rozmnażanych tymi dwoma sposobami, aby móc wybrać metodę tańszą.Słowa kluczowe: brzoza brodawkowata, sposób rozmnażania, szkółka gruntowa, charakter wzrostu drzew

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