The effect of Goemar BM 86 on the yield of three apple varieties, and selected qualitative characteristics of apples

摘要

The objective of the experiment was to study the effect of Goemar BM 86 on the yield of three apple cultivars, fruit weight and diameter as well as soluble solid content. Studies were carried out in 2006-2008 in an apple orchard planted on clayey silt, in the vicinity of Sandomierz. Three apple cultivars were taken into consideration: Elise aged 5, grafted on M.9 rootstock, Sampion aged 12, grafted on M.26 rootstock and Novamac aged 15, grafted on M.26 rootstock. Each year, 40 trees representing thestudied varieties (10 trees x 4 replications) were sprayed with Goemar BM 86 (3 l/ha) at the early, full and late blooming. The stage control variant were non-sprayed trees. At harvesting apples the yield, average weight of one apple, the number of apples with the diameter of at least 70 mm and soluble solid content in the apples were determined. It was shown that all varieties sprayed with Goemar BM 86 responded with an increase in yield and average weight of one apple. The greatest yield was recordedfor the cultivar Sampion, and the apples were significantly heavier as compared with the control. The lowest yield was recorded for the cultivar Novamac; however, its apples were heavier as compared with Elise. The application of Goemar BM 86 clearly affected increased the apple diameter of all cultivars, and the greatest values were obtained for the cultivar Novamac while the lowest for Elise (the respective increase: 18.0 and 8.3% compared with the control). The preparation Goemar BM 86 significantlyreduced the soluble solid content in the Sampion apples, in contrast to the remaining cultivars.