General requirements for cereal seed:
Seed treatment is becoming a strong alternative to field spraying due to the method being both environmentally and user friendly. Seed treatment is safer, both for people and the environment. The amount of active ingredient can be minimized thanks to precise dosage and application with our Rosengren-machines. This inturn means that plant protection will become more profitable.

Different manufacturers are conducting intense product development both of conventional and biological seed treatment products. Today we are even better equipped to partake in the development of machines, systems, materials and formulations and we look forward to further reinforcing and improving relations with our customers.

The Seed shall: 

• Have a high purity and germination. 

• Have the best possible seed health. 

• Be well sorted and cleaned. 

• Be storable.

Plant Production and Harvest:

• Use certified seed. 

• Use well cleaned sowing machine to avoid contamination.

• Don't overdo the nitrogen fertilisation.

• Treat against diseases and weeds.

• Use well cleaned and adjusted harvesting machine to avoid contamination and seed damage.

Drying and storage:

• At a water content higher than 16% dry immediately. 

• Never use a higher drying temperature than 60 C0.

• At storage the water content may never exceed 15%.

• Well cleaned dryers and storage to avoid contamination.

Analyse:

• Analyse of raw seed per at least 60-70.000 kg.

• Water content must be controlled directly after harvest to decide if drying is necessary.

• The water content must be controlled before drying.

• Germination must be controlled before cleaning..

• Seed health test before seed treatment. If no seed health test has been done treat the seed. 

• Germination test after cleaning and seed treatment per 25 - 30.000 kg.

Cleaning and seed treatment:

• A well cleaned and sorted seed contains only seed of approximately the same size. 

• Big seeds give a more even and better emergence.

• Avoid seed damage at transport, storage and seed treatment.

• To achieve a good seed treatment dust and other impurities must be taken away with a good air cleaning & separation system. 

Germination:

The seed purity can be improved with a more effective cleaning and sorting/separation. An infected seed can be disinfected by seed treatment. 

Reasons for a bad germination: 

• Use of unsuitable herbicide or spraying at wrong time. 

• Field germination. Occurs some years, difficult to do anything about. 

• Incautious harvesting. The risk increases at low water content.

• Over heating at storage i.e. the raw seed has not been dried in time or enough, which makes the temperature arise and the embryos dye. 

• Too high drying temperature. 

• Incautious transport and too hard cleaning.

• Seed- and soil borne diseases and pests. 

• The wrong seed treatment has been used & choosen or uneven treatment.