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-Spring Cereals
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Cereals Seed Rate Calculator
Enter your figures based on your region, seed and establishment data to calculate seed sowing rate
Target plant population
in spring (plants/m²)
Insert desired spring plant population after losses from non-germination and establishment have been taken into account.
TGW
Insert TGW. This is a measure of seed density and varies greatly between seasons and between seed lots. It will be indicated on the seed bag or can be measured by an official seed testing station.
% germination
Insert the official germination figure for the seed lot, indicated on the seed bag.
% establishment
Insert your estimate of the % seeds that will generate viable plants. Establishment may be influenced by local soil and seed-bed conditions, climate, drilling date, rotation, pest (insect/bird/rodent) damage.
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Seed rate required (seeds/m²)
Seed rate required
(kg/ha)
Seed rate required
(kg/ac)
The above calculator is for guidance only. Consult your agronomist for specific advice.