Maiden pear trees growth in replant soil after inoculation of rootstocks with mycorrhizal inoculum

Abstract

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.

The Effects of Bioinoculants Based on Mycorrhizal and Trichoderma spp. Fungi in an Apple Tree Nursery under Replantation Conditions

“…was similar to that of the trees in the CRS treatment. Our experiment confirmed the findings of earlier studies which showed that mycorrhization had positive effect on the growth of roots of some species of fruit trees, i.e., apple trees [47], pear trees [48], sour cherry trees [49], and plum trees [50]. The results of studies conducted by other researchers showed that mycorrhizal fungi improved the vegetative growth of apple trees [51], sour cherry trees [52], cherry rootstocks [53], and strawberries [54].…”