More about this tool.

What is Seed Rate ?

Seed rate is the amount of seed that is required to be planted in a unit area of land to achieve a desired plant density. It is expressed in kilograms of seed per acre or kilograms of seed per hectare. The seed rate is determined by a number of factors, including the type of crop, the desired plant density, the soil type, and the environmental conditions. The label on the seed packet will usually specify the recommended seed rate for the specific crop. It is important to use the correct seed rate to ensure that the crop has a good chance of success. Too low of a seed rate will result in a thin stand of plants, while too high of a seed rate will result in a dense stand of plants that may be susceptible to diseases and pests.

How do I calculate the correct seed rate for my crop?

Step 1: Determine the desired plant density. This is the number of plants that you want per acre/hectare. You can find this information in a variety of sources, including seed catalogs, extension publications, and online resources.
Step 2: Determine the thousand grain weight (TGW) of the seed. This is the weight of 1,000 seeds. You can find this information on the seed packet label or in a variety of online resources.
Step 3: Determine the germination rate of the seed. This is the percentage of seeds that will germinate. You can find this information on the seed packet label or in a variety of online resources. Step 4: Calculate the seed rate by entering the above values on our calculator.

What is Test Weight?

Test weight is the weight of a specific number of seeds, usually 1,000 seeds. It is expressed in grams per 1,000 seeds (g/1,000 seeds).