Efficiency of fruitlet thinning apple „Golden Reinders” by use NAD and Ethipnon

Abstract

The experimental plot is placed in the orchard “Codru-ST” Ltd. founded in 2009 with tres of a “knip boom” canopy type. The study subject of the experience was Golden Reinders apple variety grafted on rootstock M9. The distance of plantation is 3,5x1,2m. The research was conducted during the period of 2012 yeqar. The tested agents were NAD (Geramid-New) and Ethiphon (Gerone 480 SL), which was sprayed in different thinni9ng period. During the research, it was studied the yield, mean fruit weight, average fruit diameter, the number of first class fruits. It was established that, in the 2012 year the spray with Geramid-New in dose 1.5 l/ha when 80% of the petals have fallen + 2-3 days, or Cerone 480SL in dose 0.4 l/ha at 10 - 20 days after full flowering have a significant effect on yield, mean fruit weight and on the distribution of apples in size classes.