Pome trees are very demanding in plant nutrients. The soil for cultivation should be fertile with a good water holding capacity and aeration, preferably with a neutral pH. In order to ensure a regular high yield, it is necessary to regulate tree growth through pruning, as this will have a positive impact on the size and color of the fruits.
The fertilization of pome fruits strongly depends on the age and phenological stage of the tree. In order to achieve an effective fertilization, it is important to know the available nutrients of the soil, so a soil analysis can provide the needed information.
Major parts of nitrogen (N), phosphate (P) and potassium (K) are applied in spring, mainly with granular SOP based NPK fertilizers, as it is crucial to supply the correct quantities of nutrients so that they are available during flowering. Calcium is also a very essential nutrient for the stability of the fruit’s cell walls, and it must be available for the tree after flowering until harvest. Calcium also has a strong impact on the fruit storage properties; it is most effective as a foliar application.
Zinc, boron, manganese and iron are the most important micronutrients for pome trees (foliar application).
Biostimulation, which is mainly used to alleviate the stress effect, has also a positive impact on the fruit quality and should be applied foliar.
For planting we recommend Basacote® Plus 6M/9M. Blaukorn® or NovaTec® as granular fertilizers are used in the stage of sprouting and bud development. For fertigation systems we recommend Hakaphos® or NovaTec®Solub. Trace elements can be given with foliar application, e.g. with Fetrilon® Combi. The biostimulant Basfoliar® Kelp SL can be appliacted during vegetative growth and fruit development.