The impact of the product cropaid npa and the growth regulator paclobutrazol on the growth, fruiting and productivity of sweet cherry tree varieties

Abstract

The study was carried out in the central fruit-growing region of the Republic of Moldova, at the Petru Balan Individual Enterprise, in the district of Criuleni. The orchard was founded in the fall of 2014. The trees with Spanish cup-shaped crowns of the Skeena, Black Star and Lapins varieties, grafted on Maxma 14, were planted at a distance of 5x3 m. The Cropaid NPA antifreeze and the growth regulator Paclobutrazol, used to inhibit the growth of sweet cherry trees when applied to the soil as water around the tree trunk, were evaluated. The experimental design was as follows: G1 – the control group which was untreated; G2 – the use of the growth regulator Paclobutrazol (2 ml/tree) during the vegetative dormancy phase; G3 – the use of the drug Croplatid NPA 2 days before frost; G4 – the application of growth regulators Paclobutrazol (2 ml/tree) during the vegetative dormancy phase + the drug Croplatid NPA (5 l/ha).