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Kobra applications to wet-up substrates

January 15, 2025 Published by laurae
Soft Fruit Substrates Category: Horticulture
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In his latest technical update, OMEX’s soft fruit agronomist, Neil Holmes, discusses Kobra applications to wet-up substrates

raspberry

Wet-up Substrates

As new plantings get underway in strawberries and raspberries, consider applying Kobra to substrate bags or pots to improve the swelling of the coir and water penetration to the very corners of the bag, pot or trough. Kobra contains wetting agents which reduces the surface tension of the irrigated liquid to give even moisture penetration.

Begin by applying 5ml Kobra/L of stock tank fluid in the first application, reducing to 0.1ml Kobra/L in subsequent fertigation cycles. This makes it a very economical method of wetting up coir costing mere pence per 1000L stock tank at the lowest application rates.

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Kobra Application Guidelines

Kobra volume (L)/ stock tank (1000L) Stock tank volume (L) Rate of inclusion in stock tank (L Kobra/ L water) Rate of inclusion in the stock tank  (ml Kobra /L water) Final drip solution at 1:100 (ml Kobra/ L of fertigation) Frequency of application
5.00 1000 0.0050 5.00 0.050 Initial or quarterly inclusion
2.50 1000 0.0025 2.50 0.025 Monthly
1.00 1000 0.0010 1.00 0.010 Weekly
0.10 1000 0.0001 0.10 0.001 Constant

Stock tank inclusion rates assuming feeding at a ratio of 1:100.

close up of many raspberries

RASPBERRY NUTRITION

Learn more about our bespoke Raspberry crop nutrition and substrate options!

Raspberry Nutrition

 

close up of many strawberries

STRAWBERRY NUTRITION

Learn more about our bespoke Strawberry crop nutrition and substrate options!

Strawberry Nutrition

 

TALK TO US ABOUT SUBSTRATES
For further information regarding the range of OMEX products used within Horticultural crops, then please contact your local OMEX advisor.
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