Basing fertilization takes place towards the end of winter, before the activation of the root system, in order for slow nutrients (Ρ, Κ) to be exposed to winter rainfalls and be integrated in the soil. The goal is to promptly cover the increased needs of the trees after flowering, and even later on, during shoot and fruit growth.
The supply at this stage is:
- ● 1/3 of the total amount of the required Nitrogen (Ν)
- ● 2/3 of the total amount of the required Potassium (Κ)
- ● 3/4 or the full amount of Phosphorus (Ρ)
As nutrient uptake by the root system has not fully begun or is very low during this time, the Nitrogen in basic fertilization should always be used in an Ammoniacal or Stabilized form, so that leaching is avoided and Nitrogen is available to the trees during fruit growth.
Depending on the soil type and characteristics, the use of compound fertilizers (Complefert) is recommended, because they fully cover the requirements of the trees in N, P, K, Mg, S, as well as provide the necessary to the apple tree orchard trace elements Β and Zn, as is the use of compound stabilized fertilizers (NutrActive), which allow for a single application of basic fertilization and protect Nitrogen from leaching.
|Type of Fertilizer
||Stage of application
||Dosage per tree
NutrActive special 12-12-17 (30) +2MgO +TE
NutrActive magni-plus 14-7-14 (25) +4MgO +0,1Fe +0,1Zn
NutrActive triple-S 15-15-15 (25)
Ωmega fert 14-8-18 (30) +2MgO +TE
Ωmega fert 14-18-14 (27)
Complefert special 12-8-17 (27) +2MgO +TE
Complefert blue-star 12-12-17 (30) +2MgO +TE
Complefert magni-plus 14-7-14 (25) +4MgO +0,1Fe +0,1Zn
Nutrifert base 11-15-15 (32)
Organofert 12-12-12 (35) +10 O.Y.
(Jan. – Feb.)
|1 – 3 kg / Tree
* The dosages mentioned are indicative. Regarding the fertilizing of crops, one should take into account the advice of local agronomists.