Barley yellow dwarf

But, uh- Generally speaking, you tend to get burnt more on the later side.

Um, I think based on what we're seeing with barley yellow dwarf, I'm curious to see what, uh, both yourself and Dennis feel on that, but seeing a lot more of it in fields.

And if you do have that early planting and with the amount of cover crop in that around, um, to, uh, act as a host for some of those aphids in that, are we maybe at greater risk if you're not planting treated seed or some way of, uh, mitigating that? I don't know.

Cool.

Yeah, I think you can plant too early.

I mean, ideally, you wanna plant on time or in that, during that window where, where you're at the, your target, you know, so that you can get enough growth in, in the fall to get, get your, you know, four to five, six tillers, um, in the fall.

But if you do plant too early, Jonathan, I think you're right, um, in terms of you, you get-- you plant early and you get a, a bit excessive growth, and then that's, uh, can be a haven for aphids, um, and, uh, s- which spread the barley yellow dwarf virus.

So, uh, there's that risk of getting that barley yellow dwarf virus earlier.

I suppose looking forward, I suppose farmers could start sowing rye at the end of next week, and it doesn't mind being sown early.

It's not as susceptible to diseases and issues like take-all and BYDV, even though it can get hit a small bit, but suppose to get the workload underway if autumn drilling is on your mind you can get the rye going early and then probably follow to winter barley the following week if you have a barley yellow dwarf iris tolerant variety that just gives you a bit of flexibility around sowing dates and apart from that i'd probably hold off in the week until october unless you're in heavy enough land maybe around mead or or elsewhere just to reduce the disease burden in the springtime But all in all, I suppose the tillage thing is going on right at the moment in terms of workload anyway.

Have you been out looking at any maize crops or anything recently, Stephen? Out looking at a few.

Kind of a mixed bag.

So Littoral, Organa and SY Kestrel.

SY Kestrel topping out on yield and Litteral and Argana are BYDV tolerant.

SY Kestrel claims BYDV resistance and that's also a six row hybrid.

Their disease profile is really impressive.

So those three new varieties all score an eight for resistance to both rincosporium and net blotch.

Just to know belfry has gone from the list.

And that's the only one that went off the list this year.

But there's a total of 10 varieties and seven of them BYDV tolerant.

It's more combinations of letters, but we did speak about this a few weeks ago, like the other stuff.

But barley yellow dwarf virus, BYDVs, become quite a bit more of a problem in re- in recent years, and we've just launched a new tool to help growers manage the risk of BYDV in their crops.

So the new tool considers many more risk factors than the previous tool that was used, the aphid Tsum tool, uh, and that's been around for several years.

But this, this tool goes one step further.

It's based on decades of aphid biology science, virus epidemiology studies, and computer modeling, and it also puts crop economics at its heart.

So you can use the tool to make informed sowing date and risk-based spray decisions for BYDV susceptible varieties.

The tool has been developed in conjunction with farmers to make sure that it's practical, that it's easy to use, and it actually makes a difference on farm.

Our research shows that using it alongside local knowledge can reduce the number of insecticide applications and protect more yield than the previous Tsum tool did where BYDV is present in crops.