In onion cultivation, a number of plant processes play a crucial role that determine the final yield and grading. A grower can positively influence these processes by applying the right fertilisers and biostimulants at the right time.

The products below are options for use in onion cultivation. Discuss with your advisor what is the best application for you.

Select a stage for more information

Stage 1 Sowing/planting
Stage 1

Sowing/planting

Advice:

Optima Leaf-MnZn+3-8 applications of 1 - 1,5 L/ha from planting/emergence

Bladtoepassing bij specifiek nutriëntengebrek - 3 tot 8 keer product uit de Optima Leaf-range: 1,0 - 1,5 liter/ha (dus de producten Optima Leaf-Trace, Optima Leaf-Fe+, Optima Leaf-Ca, Optima Leaf-Mg+, Optima Leaf-Mn+, Optima Leaf-Zn+) (vanaf planten/opkomst)

Relevant products

Stage 2 Leaf formation
Stage 2

Leaf formation

Advice:

Optima Leaf-MnZn+3-8 applications of 1 - 1,5 L/ha from planting/emergence

Foliar application in case of specific nutrient deficiency - 3 to 8 times product of the Optima Leaf range: 1,0 - 1.5 L/ha (the products: Optima Leaf-Trace, Optima Leaf-Fe+, Optima Leaf-Ca, Optima Leaf-Mg+, Optima Leaf-Mn+, Optima Leaf-Zn+) (From planting/emergence)

Relevant products

Stage 3 Bulb formation
Stage 3

Bulb formation

Advice:

Optima Leaf-MnZn+3-8 applications of 1 - 1,5 L/ha from planting/emergence

Foliar application in case of specific nutrient deficiency - 3 to 8 times product of the Optima Leaf range: 1,0 - 1.5 L/ha (the products: Optima Leaf-Trace, Optima Leaf-Fe+, Optima Leaf-Ca, Optima Leaf-Mg+, Optima Leaf-Mn+, Optima Leaf-Zn+) (From planting/emergence)

Relevant products

Stage 4 Filling of the bulbs
Stage 4

Filling of the bulbs

Possible products:

Optima Leaf-K3 applications of 3 - 5 L/ha during bulb filling
Optima Leaf-MnZn+3-8 applications of 1 - 1,5 L/ha from planting/emergence
Optima Leaf-KS3 applications of 3 - 5 L/ha during bulb filling

Foliar application in case of specific nutrient deficiency - 3 to 8 times product of the Optima Leaf range: 1,0 - 1.5 L/ha (the products: Optima Leaf-Trace, Optima Leaf-Fe+, Optima Leaf-Ca, Optima Leaf-Mg+, Optima Leaf-Mn+, Optima Leaf-Zn+) (From planting/emergence)

Relevant products

Stage 5 When turning yellow
Stage 5

When turning yellow

Soiltech has no products for this stage.

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