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The presented studies have shown the effect of soil fatigue on the decrease of resistance to low temperatures in one-year old apple-tree shoots. The highest frost resistance was demonstrated by the shoots of apple-trees grown in localities so far not utilized for fruit-tree cultivation.In a replanted apple-tree orchard, the plantation of trees in the grass inter-rows of the old apple orchard did not...
Studies were carried out in the Department of Pomology on the area of the Agricultural and Pomological Experimental Farm in Przybroda belonging to the Agricultural University in Poznań. In the years 2005–2006, apple-tree rootstocks M9 were planted into rhizoboxes with soil taken from different orchard localities. It was found that the previous method of soil use had an essential effect on the growth...
The experiment was carried out in the Experimental Orchard Przybroda of the Department of Pomology, Poznań Agricultural University in the years 2001–2003. Trees of ‘Šampion’ on M.9 rootstock were planted in the spring 1994 on virus-free rootstock EMLA 9 at spacing of 3.5 × 1 m (2 857 trees per ha) on grey-brown sandy loam podsolic soil. The experiment included the following 5 treatments of nitrogen...
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