Nozzles for pre-Ems and centurion max

[Brisel]

Sorry to come back to this. If I have a twin cap angled forward and back with blue flat fans, each supplying 100l/ha so 200 in total, is this the same as a twin line?

Alternating nozzles along a boom surely means a large proportion of BG plants are sprayed either forward or back. Twin cap must hit both sides???

Yes, twin caps would give the same effect as twin lines IMO. Alternating angled nozzle direction is better than all vertical but not as good as twins.

The most recent TAG agronomy update had a paragraph on nozzle choice & water volume for pre em herbicides. It said that 100 l/ha is fine & that an even spray pattern & good timing are more important than nozzle choice i.e. better to use air induction nozzles than flat fans if at all windy or the forward speed is high. There was no mention of nozzle angle in this context. The TAG article did not mention post emergence herbicides.

 

[SimpersTradeCounter]

Again, it has to be said there are many ways to skin a cat and it seems many opinions on what is best.

I think that like I have said before, many new nozzles come and go and with which comes a price tag as with everything. It does however still remain that most of the time we'll end up back where we started using good old fashioned standard flat fans.

I can assure you that using air induction nozzles are not the way to go regarding black grass etc. unless the air induction you are talking of is the BFS bubble jet (this is not an advert) . This is because of the droplet spectrum created by this nozzle especially at real life spraying pressures (c3 bar) .

Having said this. If you wanted to make the move to use twin fans of sorts. My advice would be to use a twin fan cap and run 2 x 03's at 300 l/ha as I have said earlier. That way you will double pass, bi directional spray with a medium droplet spectrum @ 3 bar.

Again though its only an opinion.

 

[SimpersTradeCounter]

Oh and on a side note you can obtain nearly all your nozzle, cap, twin caps and seal at

STC

Just give us a call !

Shameless plug

 

[Fran Loake]

On the topic of best spraying practises for pre ems, has anyone any experience of using a tail type arrangement on the end of each boom (either a small wheel on a stick or an upside down walking stick with the handle or wheel to brush the ground on uneven ground) of maybe 40cms long to stop grounding?

I've seen them from a distance and wondered about making them. Would they work? Or just gather soil or drag the boom backwards??

 

[SimpersTradeCounter]

A boom skid ?

 

[Fran Loake]

A boom skid ?

Yes, I suppose so. We've already made a small simple affair to stop the boom end touching the ground but are thinking of a bigger type that will keep the boom end up to almost correct height when the ground is a bit uneven.

 

[Brisel]

The Aussies do this a lot for pickup truck based spray rigs where high speed is key & the suspension gives rise to lots of pitch & yaw.

 

[Brisel]

What about an old cheapo car trailer axle with torsion bar suspension?

 

[Fran Loake]

What about an old cheapo car trailer axle with torsion bar suspension?

Not sure the booms would take the weight but good idea

 

[Andrew K]

Yes, I suppose so. We've already made a small simple affair to stop the boom end touching the ground but are thinking of a bigger type that will keep the boom end up to almost correct height when the ground is a bit uneven.

Chafer sprayers come with a modified pigtail tine to stop grounding of the boom tips, works well.

 

[Brisel]

Knight have something very similar, as do Amazone

 

[SimpersTradeCounter]

Knight use them (2 types, short ones and longer ones) which are made from spring steel. Hardi use ones similar to the ones shown on the Aussie machines with wheels on their bigger force booms and on tier smaller booms they also have 2 types (a light and a heavier duty one) They are not an uncommon site on sprayer afaik !