Growers planning to sow cereal seed left over from last autumn’s rain-hit campaign should get it tested for germination levels to ensure they use the right amount.

Chris Guest, seed manager at Gleadell Agriculture, says germination levels in over-yeared seed are showing significant variability, with over a third of samples tested falling below 85%, the legal standard for certified seed.

Initial results from Dunns, one of the largest agricultural seed processors in the UK, show 54 of 158 samples tested failed to reach that standard. Actual results in this group ranged from 5% to 84% germination, and averaged 65%.

“While seed at the average level is obviously usable the grower would need to increase his drilling rate by a third to sow at the equivalent of 85% germination,” says Mr Guest.

“Given the extreme variability these tests have thrown up there is a real need to get individual seed lots tested.”

To help growers tackle the problem Gleadell is offering a free germination test through Dunns. Growers are eligible for one free sample for every 3t of new variety seed they have bought from Gleadell.

“Gleadell will invoice the grower directly for the cost of the test,” says Mr Guest. “However, if the grower orders new variety seed we will credit the grower for the cost of the sample test against their new seed sale.”

Any new variety offered by Gleadell can be purchased to trigger the offer, he adds. To take advantage of the service growers should contact their local farm trader. The test usually takes about 7-10 days for over-yeared seed.

“A simple test like this will take all the guesswork out of sowing the right seed numbers and ensure growers establish a healthy plant population this autumn,” says Mr Guest.