Roundup and sheep grazing

[shearerlad]

If there i are no real weed issues, why are you spraying it off?
I would just turn it over nicely with the plough, get the use of any organic matter left after the sheep. Roundup just dries the whole sod up and probably leave you with a leatherjacket problem.
Different story if there are weed issues though

I read somewhere that the kiwis are doing trials so fix this. Iirc a bit of liquid molasses as a tank mix with glyphosate feeds the soil microbes and helps prevent the soil drying out. I don’t know any details though sorry

 

[ollie989898]

Wireworm aren't going to hurt spring barley. You are drilling hundreds of seeds per square meter and the stuff grows and tillers out like a weed. By the time the wireworm realise you have killed or buried their foot the crop will be two feet tall.

I have grown spring barley in what was the most hideous, neglected, ancient permanent pasture you could think of and never had a serious issue with wireworm. Make a good seed bed, don't drill it too early or into mud and roll it firm. The biggest issue with spring barley is crows eating the damned stuff, not wireworm. The seed bed needs to be good and the drilling sound. It needs to emerge uniformly and get up and away fast. I agree with putting the N in the seed bed. I do not see what odds it makes leaving it two weeks later until emergence.

If it is nasty old pasture I would spray it off with Kyleo and validate, don't mess about. It will murder anything if applied right.
There is nothing you can do with leatherjackets or wireworm now. I always found wireworm were worst in the second and third years after grass when they had little to eat and have to come up to find your crop.

After 3-4 years with no grass the larvae have flown the coop and you will be wireworm free.

Dry soil? Good, that is what barley wants. Not mud.

 

[Brisel]

I want to spray a 30 acre section of a field off with roundup this week, the field currently has Hoggs in it....how long would I have to take the sheep out for after spraying before I could let them back In? Many thanks

Legally, you need to follow the conditions on the label for the Roundup used. They vary between brands. Some say you can graze within a few days, other a week or two. Grasses will start to show symptoms of dying off around 2 weeks after application but broad leafed plants will take longer.

 

[neilo]

Wireworm aren't going to hurt spring barley. You are drilling hundreds of seeds per square meter and the stuff grows and tillers out like a weed. By the time the wireworm realise you have killed or buried their foot the crop will be two feet tall.

I have grown spring barley in what was the most hideous, neglected, ancient permanent pasture you could think of and never had a serious issue with wireworm. Make a good seed bed, don't drill it too early or into mud and roll it firm. The biggest issue with spring barley is crows eating the damned stuff, not wireworm. The seed bed needs to be good and the drilling sound. It needs to emerge uniformly and get up and away fast. I agree with putting the N in the seed bed. I do not see what odds it makes leaving it two weeks later until emergence.

Nonsense, that depends on level of infestation. I took out lots of old pp when I moved here in March 2012, with a neighbour/contractor coming in to plough & ph/drill Spring Barley for me. One 8ac field had such bad wireworm that, despite giving them a healthy drink, the crop yielded about 1/2 t per acre. The next year, again in SB, it was only slightly better, at a little over a ton/ac. Only after putting it through a swede crop for a year did we get on top of them and start getting that field close to paying it's rent.

 

[Skintagain]

Tell the sprayer man to watch the Hoggs with the booms

 

[JD-Kid]

I read somewhere that the kiwis are doing trials so fix this. Iirc a bit of liquid molasses as a tank mix with glyphosate feeds the soil microbes and helps prevent the soil drying out. I don’t know any details though sorry

have heard the same kinda thing with. a kg or 2 of sugar added per ha
bit of urea would do the same thing

 

[ollie989898]

Nonsense, that depends on level of infestation. I took out lots of old pp when I moved here in March 2012, with a neighbour/contractor coming in to plough & ph/drill Spring Barley for me. One 8ac field had such bad wireworm that, despite giving them a healthy drink, the crop yielded about 1/2 t per acre. The next year, again in SB, it was only slightly better, at a little over a ton/ac. Only after putting it through a swede crop for a year did we get on top of them and start getting that field close to paying it's rent.

What the heck are you doing to have a barley crop wiped out by wireworm??

I've put all kinds of crops into the nastiest old pasture in a variety of places. Only in maize is the crop particularly at risk.

What you describe sounds like something far more acute, like the kind of damage leatherjackets or frit fly might do. How did you know the crop was being attacked by wireworm?

 

[FIL46]

Mob the field with sheep and leave the sprayer in the shed, just a waist of chemical, dormant weed seeds will pop up after you plough it anyway better saving your money and spraying weeds early on when barley is strong enough your chemical adviser should keep you right when to do it, put on your N as soon as the tram lines are visible putting to much in the seed bed will just get the weeds going and will wash ina bit by the time the barley needs it, on the top worked best for me.

 

[Skintagain]

Mob the field with sheep and leave the sprayer in the shed, just a waist of chemical, dormant weed seeds will pop up after you plough it anyway better saving your money and spraying weeds early on when barley is strong enough your chemical adviser should keep you right when to do it, put on your N as soon as the tram lines are visible putting to much in the seed bed will just get the weeds going and will wash ina bit by the time the barley needs it, on the top worked best for me.

A couple I know don’t bother spraying off for spring barley but they wholecrop it so it may be different never looks riddled with sh!t though.

 

[Northeastfarmer]

How long after it was sprayed off can I spread muck on this please? Was sprayed off 6 days ago...would like to spread muck on today

 

[Bury the Trash]

'sposed to be a week … cant you do something else today...
…. will be alright tho I guess …. the weathers been good and stuffs growing....

 

[Northeastfarmer]

'sposed to be a week … cant you do something else today...
…. will be alright tho I guess …. the weathers been good and stuffs growing....

Time is of the essence I’m afraid...need jobs doing before lambing or it turns wet

 

[Skintagain]

How long after it was sprayed off can I spread muck on this please? Was sprayed off 6 days ago...would like to spread muck on today

Have you got started? Horse and muck fork job is it?

 

[Northeastfarmer]

Have you got started? Horse and muck fork job is it?

I’m halfway through the job

 

[Skintagain]

Racehorse on the job I see

 

[Northeastfarmer]

Prices for spring barley are fairly high.
Westminster being a good allround variety.
Not much you can do if wireworm are present.
Have you tested for PH?

Hi Kev, is it possible to see Wireworm in the soils structure?

 

[Brisel]

 

[Northeastfarmer]

View attachment 783972

Thanks @Brisel will have a look

 

[Northeastfarmer]

View attachment 783972

Had a good root top to bottom and can’t see anything resembling that

 

[Brisel]

http://www.csalomontraps.com/4listbylatinname/pdffajonkentik/wireworms.pdf