To maintain varieties and to obtain propagating material for commercial cultivation, specific companies have specialised in vegetative reproduction of strawberry plants. Reproduction of strawberry plants usually takes place in open fields. However, some nurseries reproduce mother plants on substrate in gutters, mostly in greenhouses. A fertile soil is naturally the foundation for well developed, healthy plants. During the growth season, plant growth can be steered using specific (foliar) fertilisers and biostimulants. These products help you support the plant in critical growth phases, leading to optimal growth and crop quality.

Select a stage for more information

Stage 1 Cultivation preparation
Stage 1

Cultivation preparation

In this stage, we advise applying humic acid and boron. Humic acid has a positive effect on the availability of phosphate in the soil and indirectly stimulates crop development. Boron is also important for good root development and numerous other processes. Optima Soil Humi-B* is a pure humic acid with 2.3% boron

Advice in this stage:

Soil application: Optima Soil Humi-B* 20 litres/ha

* Unfortunately, only available and applicable in the Netherlands.

Stage 2 Planting
Stage 2

Planting

Reproduction fields are generally planted out in spring, in March and April. The mother plants are removed from cold storage and planted out. It is often possible to apply a precise dose of fertiliser when planting in the same operation. During this period, Phos-Life* is a suitable fertiliser to provide the plant with the extra phosphate, calcium and silicon it needs to optimally develop.

To promote the establishment of the plants, the soil must be properly moist. This promotes root development and the easy availability of minerals. Root development and plant establishment can also be stimulated with Optima Root. This leads to quicker growth and lower plant mortality.

Advice in this stage:

Soil application - Optima Root; 10 litres/ha

Soil application - Phos-Life*: 20 litres/ha

* Unfortunately, only available and applicable in the Netherlands.

Relevant products

Stage 3 Vegetative growth
Stage 3

Vegetative growth

After initial root development, the plants concentrate on the vegetative reproduction of stalks and foliage. Nitrogen, magnesium and manganese, in particular, are of extra importance for the production of chlorophyll (leaf green). To optimise the photosynthesis capacity and plant growth and therefore the yield, levels can be adapted during the season using foliar nutrients. This is important for the mother plants and new runners.

Advice in this stage:

Foliar application - Optima Leaf-Mg*: 1 litre/ha (every 14 days)

Foliar application - Optima Leaf-Mn: 0.75 litre/ha (every 14 days)

Foliar application - Optima Leaf-NPK+: 2 litres/ha (every 14 days)

* Unfortunately, only available and applicable in the Netherlands.

Relevant products

Stage 4 Runner formation
Stage 4

Runner formation

For high quality reproduction, it is vital that mother plants direct sufficient energy into the formation of runners from which young plants can develop. An important element in this phase is potassium, involved in the accumulation and transport of sugars and amino acids. If a potassium deficiency occurs during this period, this will affect the quality of the plants to be harvested. Optima Leaf-K has been developed especially for this application, to quickly make potassium available through the leaf during the growth season.

Advice in this stage:

Foliar application - Optima Leaf-K: 5 litres/ha (every 14 days)

Relevant products

Stage 5 Root development runners
Stage 5

Root development runners

When the runners have reached a sufficient length, they are positioned perpendicular to the row direction, so they will have enough sunlight, water and minerals for further development. In this stage, the runners start producing their own roots, so they are no longer dependent on the mother plant and can uptake up water and nutrients. Stimulating good root development is very crucial in this phase.

Advice in this stage:

Foliar application 2 x - Optima Root: 10 litres/ha (every 14 days)

Relevant products

Stage 6 Growing point formation
Stage 6

Growing point formation

At the end of the growth season, the phase arrives in which the young plants become heavier and start forming growing points. These growing points on the plant develop into vegetative (leaves) and generative (flowers and fruits) plant parts and are crucial for production in the following season. There is a strong relationship between the number of growing points and the final production per plant. Give the plant the right (quantity of) nutrients in time so it can accumulate reserves in preparation for the harvest period.

Important elements in this growth phase are potassium (accumulate reserves), calcium (cell wall strength and quality) and trace elements. For an optimal fertilisation, we advise the following fertilisers:

Advice in this stage:

Foliar application - Optima Leaf-Trace: 1 litre/ha (every 14 days)

Foliar application - Optima Leaf-K: 5 litres/ha (every 14 days)

Relevant products

Stage 7 Lifting and storing
Stage 7

Lifting and storing

Soiltech does not have specific products for this stage.