Over yeared seed

[Rookie]

Didn't get any winter crops planted last year, so had a fair bit of new dressed seed still in the shed.
Just got results back for germination and vigour and was pleasantly surprised.
Wheat and barley with standard dressing between 95 and 99% germination and all 1 vigour (1 highest and 5 lowest vigour).
Even wheat dressed with latitude has come out at 99% germination and 1 vigour.
At least I won't have to buy lots more expensive seed.
Heard someone else has had some seed tested and came back between 50 and 70% germination.
What are others finding?

 

[teslacoils]

Not had the results of mine yet.

 

[David.]

Makes a difference how dry it was when treated, I have found. It didn't like being overyeared at 17.5%

 

[SteveE]

Tested some Dawsum and that came back at 97% germination with vigor of 1 also, was Redigo pro treated of our fss

 

[Bramble]

Dawson 91% 7
Diego 96% 8
Graham 98% 9
Crusoe 99% 9 (vigour out of 10, 10 the best)

All SPD dressed

 

[Ed Gaskit]

I've never had a problem using overyeared seed even where germination was 45%. Still got a decent crop.

 

[Rookie]

I've never had a problem using overyeared seed even where germination was 45%. Still got a decent crop.

I take it that you had to double the seed rate. If you had drilled it without getting it tested you may of had a shock at the low plants / m2.

 

[Rookie]

Just had a delivery of some mustard seed to use as a cover crop from one of the main seed suppliers that do a lot of sfi seed, and was surprised it is over 2 years since it was bagged up and tested.
Is there any timescale how old new seed can be and still be sold.? Realise it hasn't got any seed dressing on it.

 

[Flatlander]

Lots of canola seed here is re tested if not sold and either blended or re bagged and sold again. It is labeled from which year it was produced so no mis representation as to what your getting. Cereals will over year pretty good if kept dry and cool.

 

[Jock]

Sow some over yeared seed most years.
Never tested it but has always grown without any noticeable difference

 

[Boysground]

I did a tray test in the kitchen and everything grew so that will be fine. The latitude dressed was definitely a couple of days behind the beret.

Had my home saved spring beans tested at 45% germination this year. So planted at 90 seeds m2. Think it was something like 300kg/ha. I think every seed germinated was the thickest crop I have seen. Cracking yeild from it.

Bg

 

[nick...]

Sure suppliers only tell us over yeared seed is no good to flog some more.ive used plenty of over yeared in the past and just put a bit more seed on.
Nick...

 

[Salopian_Will]

I've had over yeared where there was acceptable germination but not enough vigour for it to make it through. Wasn't drilled too deep and could see to the line where I changed to the old seed. It had come from a merchant and I expect had been redressed. Merchant didn't quibble the suggestion that the invoice was waived!

 

[SteveE]

I've had over yeared where there was acceptable germination but not enough vigour for it to make it through. Wasn't drilled too deep and could see to the line where I changed to the old seed. It had come from a merchant and I expect had been redressed. Merchant didn't quibble the suggestion that the invoice was waived!

Yes we have certainly had that in the past where we have always been wary of overwintered seed. Often clean enough for fields that we are sure of and then anything additional we would get non dressed incase of weather turning for the worst.

 

[BigBarl]

Key with overyeared is to get a vigour test done. The only time I’ve ever known overyeared seed to be a problem is when it’s low vigour and drilled very late or into horrible, wet, cold seed beds. In every other situation there you’d struggle to tell the difference between overyeared seed and new crop.

 

[yellow belly]

When I did it in 2001
1 year old dressed new dressed and new undressed there was a days difference between emergance
Undressed new up 1 day earlier than new dressed old dressed a day after newbdressed
Since then usually drill untreated seed grown from treated new seed this avoids having treated 1 year old seed in a 2000 2012 2019 or 2023