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(Unit/t of production)
(Unit/t of production)
N
12
12
Very Sensitive
P2O5
4.2
4.2
Very Sensitive
K2O
12
12
Very Sensitive
MgO
1.9
1.9
Sensitive
SO3
2.2
2.2
Sensitive
TE
Zinc (Zn) from the 6-leaf stage, boron (B) enhances fecundation
Fertilization recommendations:
Silage maize needs nutrients in concentrated form, especially in the first phase of plant development. The total amount of nutrients required for grain maize can be applied prior to cultivation. The largest requirement for nutrients is in the first phase of growth. Too late an application of mineral N increases the risk of leaf burning and delayed ripening. When using urea as well as cattle manure, gaseous N-losses can be substantial if these fertilizers are not worked into the soil immediately after application. Only with high yield expectations and therefore a high N requirement or on light soils (where there is a risk of N-leaching) is a split application of nitrogen is appropriate. One third of the planned quantity of nitrogen is applied during the two to four leaf stage. Later applications increase the risk of leaf burn and delay ripening. The result of this is higher moisture contents in the grain.
Banded fertilization in the form of NP fertilizer brings yield benefits, especially in heavy soils, cold locations and soils low in phosphate, as the poorly developed roots of the young plants can feed directly from the fertilizer band. Temporary phosphate deficiency during juvenile development can be resolved very well with liquid fertilizers or water-soluble nutrient salts applied as foliar fertilizer. Liming can be done before sowing or even in autumn. The maximum quantity of CaO should be 1.500kg/ha - preferably in the form of calcium carbonate, to avoid boron fixation.
Yield parameters of silage maize:
Growing 9-11 strong plants per m² with stable, long-growing stems is ideal and makes for high yields. Strong and healthy cobs are particularly important for a high energy density of the harvested material.
First application
Second application
A single dose of the total nutrient requirements for optimal maize fertilization:
Maize needs its nutrients in the first phase of growth until tasselling. Fertilization before sowing is therefore required to achieve high yields. With the appropriate NPK formula, all the required nutrients can be supplied in one application. N fertilization depends on subsequent delivery from the soil and is based on extraction, which corresponds to approximately 160-180kg N/ha. It is important to use water-soluble nutrients. From the six-leaf stage onwards, a high daily mass formation begins, which is associated with high nutrient absorption rates of several kg/ha and day. Emphasis on phosphorus fertilization in maize ensures the desired yields when using manure from cattle farming and biogas slurry.
Please use NutriGuide for a personal recommendation.
Final fertilization in the two to four leaf stage:
At high yield expectations, and therefore higher N requirements, as well as on light soils to avoid leaching losses, N-fertilization is divided into two applications. In this case, one third of the total amount of nitrogen should be added as fast acting nitric nitrogen in the two to four leaf stage. Later fertilization brings no yield advantage but carries the risk of leaf burning and delayed ripening.
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4021 Linz, Austria
