HEUBACH

Heubach Testing of Treated Seeds

We perform testing of treated seeds using the Heubach method, in full compliance with the applicable ESTA – European Seed Treatment Assurance guidelines.

The Heubach test is used to assess the quality of seed treatment by determining the amount of free dust released from treated seeds under defined conditions. Seeds intended for treatment must meet specific requirements regarding moisture content and cleanliness, including dust level, presence of broken or damaged seeds, and the presence of foreign material such as chaff, other seeds, sclerotia, or inert material.

Threshold values for dust content:

• Maize (Corn): 0.75 g of dust / 100,000 seeds
• Oilseed rape (Canola): 0.50 g of dust / 700,000 seeds
• Sugar beet: 0.25 g of dust / 100,000 pellets
• Sunflower: 0.40 g of dust / 75,000 seeds
• Cereals: 4.00 g of dust / 100 kg of seeds
• Carrot, Chicory: 0.10 g of dust / 100,000 seeds
• Onion: 0.20 g of dust / 100,000 seeds
• Sweet corn: 0.75 g of dust / 100,000 seeds
• Green and dry beans: 0.40 g of dust / 100,000 seeds
• Pea: 0.20 g of dust / 100,000 seeds
• Cotton: 6.00 g of dust / 100 kg of seeds

Continuous and frequent monitoring of the seed treatment process using the Heubach test, as required by the ESTA standard, not only ensures compliance with ESTA requirements but can also provide measurable financial benefits, such as reduced use of seed treatment products and ongoing control of their consumption.