Published in Scientific Papers. Series B, Horticulture, Vol. LXVI, Issue 1
Written by Georgi POPSKI, Boryana STEFANOVA, Petko MINKOV
The study was conducted in RIMSA-Troyan in the period 2014-2018, in a plum plantation of 'Katinka’ cultivar, under non-irrigated conditions, on pseudo-podzolic gray forest soils, poorly stocked with nutrients. The impact of different soil surface management systems (fallow, natural grassland, artificial grassland) on vegetative and reproductive indicators of plum trees was observed. Data showed that the largest growth of the trunks was registered in soil managed as an artificial grassland (trunk section 2014-30.01cm2; 2015-39.01cm2; 2017-60.56cm2; 2018-70.92cm2) and the highest annual growth was observed for each year of the study period, formed by higher number of annual twigs. In the formation of the volume and projection of the crowns, no patterns have been established regarding the soil management way. The highest yields were reported in 2017 with 14 kg/tree and in 2018 with 9.1 kg/tree from an artificial turf as a soil management system, which had a positive effect on other reproductive indicators, such as weight and size of fruit.
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