Spring frost in the blooming time can be a significant factor decreasing the fruit production and affects the cultivation profitability in the years with unfavourable weather conditions. In Poland, the fruit trees especially susceptible to damage are peach and apricot trees. Among the popular methods of protecting the trees against spring frost damage there are three kinds of treatment: sprinkling irrigation, fogging, smoking and using fans for mixing the layers of air. The costs of applying the particular methods differ, as well as their efficiency. The side effect of using them can be also orchard pollution. The experiment was conducted on selected peach tree cultivars, on two rootstocks. Two methods of spring frost protection were applied: sprinkling irrigation and fogging with the use of glycerin mixed with tap water in proportion 1:10. Sprinkling irrigation proved to be more effective, it protected 98% of blooms. Using the fogging device also brought a satisfying effect. The cultivars that were easily damaged by spring frost were 'Early Redhaven' and 'Cresthaven'. The greatest resistance to bloom damage was observed in the case of the 'Suncrest' and 'Saturn' trees. The yielding of the 'Inka' and 'Early Redhaven' trees protected by sprinkling irrigation was significantly better, ...
The quality of one -year -old peach trees of 'Saturn' cv. on Manchurian seedling rootstocks was estimated in this experiment. The rootstocks with ‘sleeping bud' were planted in spring 2012 directly into the orchard in two different ways: traditionally -in the holes and in ridges, with a spacing of 4 x 1.5 m. The factors of the study were: the method of planting and different levels of soil humidity, obtained by the use of: drip irrigation, geocomposite and combinations: geocomposite with 50% the dose of irrigation. Geo-composite had the capacity of 1.6 L and consisted of: superabsorbent, inner plastic net, and outer nonwoven fabric.Preliminary studies have shown the usefulness of technology based on shorter production of nursery cycle, by planting rootstock with buds to the orchard. A requirement for using of this method is to provide the best conditions for the growth of maiden trees. Favorable conditions for the development of maiden peach trees in the orchard ensured planting in ridges. The high quality of one-year-old peach trees were obtained with traditional planting and under control conditions. Regardless of the method of planting, strong growth and high quality parameters of maiden trees has also provided by drip irrigation, ...
The aim of the research conducted in the conditions of Lower Silesia in the years 2012-2016 was to evaluate the growth and yielding of young peach trees cultivated in ridges with drip irrigation. The experiment concerned the flat-fruit peach trees, cultivar Saturn on the Manchurian peach tree seedling, planted in the spring of 2012 in the spacing 4.0 x 1.5 m.In each year the shortage of rainfall was observed, as compared to the years 1997-2000. During the vegetation period, the deficiencies were from -7.3 mm up to - 221.7 mm. The insufficient amount of rainfall was accompanied by the rise of the mean air temperature in the vegetation period by 0.5 - 1.7oC. In the orchard, the drip irrigation in the form of stippling tape T-Tape TSX515-50-380 was applied, with the emitters every 50 cm and the expenditure of 3.8 l per metre in 1 hour. The humidity measurements were being taken from the beginning of May until the end of July with the use of Watermark probes, testing the sucking power of soil at the depth of 20 cm. The irrigation started when the water potential of soil was 30 kPa.During the 4 years, the total yield per hectare ...
