[Don Boles]

I was spraying this aft in more wind than I care to, about 30 degrees, hoping to finish a field and the spraying of peas off. Didn't.
The peas are short so you can esentually pretend you are spraying the ground, ran the boom as low as settings allow, in fact the middle section was as mechanically low as it could go, the rest controlled to that level about 2/3's of the way from my foot to my knee.
The electronic pressure gauge read 9 psi/62 kpa. Spray pattern was rock bottom acceptable. Aim/Pinpoint allow accurate setting of such low pressure, accurate flow control is an entirely different topic.
This meant I had to go very slow to attain correct rate but 7 km/hr is considerably faster than zero.

Desperation spraying.

 

[coogan]

Now you are farming ! In 20 years of farming I can count the number of perfect spraying days on one hand.

 

[farmshop]

Was in the same boat. Trying to get through corn between rain showers. running booms in the dirt aixr tips going 6-7 mph get 1 field done try a second and wallow my way out after 2 acres. Try again tomorrow

 

[13-36-29]

i thought there had to be a minimum height on aim for nozzle to nozzle overlap when they alternate on off. what was your duty cycle at.

 

[w-mFarms]

9 psi and nothing will happen here need a minimum of 15 to keep things going.
we always have wind, tonight was a perfect night for spraying, too bad we were all caught up for this week.

 

[lanwickum]

I was looking at spraying some barley. forcast was 90degF here toady. I seen 92. The barley should be sprayed, but I decided to wait till tomorrow by the time I had everything moved. I have messed up my crops enough this year. I have a better time accepting mother nature's abuse this far in the game with out me helping out. windy and hot with spray on top of everything did not sound good to me. I did get some office work done and things done around town I was needing to do.


Don, you must have been trying to avoid drift? yesterday I had to leave some edges of pea fields to avoid drift into barley next to it. No use in spraying weeds if you do more damage than the weeds will. If I get time to go back I will catch those edges. The wonders of coverage mapping.

 

[bussard]

Sprayed peas 10 days ago.. Had frost damage in low areas where crop was just comming back and peas on higher spots they were going over ten node stage.. Both ag reps thought I should leave it because of damage and drought..But with authority not activated the kocha was lifting above peas, oats was terrible..so decided to spray it at low rate with pursuit and assure

Went threw it today and was impressed overall with the control I got.. I had picked a good day with low wind.. Also got good control on lentals with same control

 

[the geeze]

Now you are farming ! In 20 years of farming I can count the number of perfect spraying days on one hand.

Dad always said if you could get the wind for haying we get for spraying it would make farming a lot easier.

 

[Don Boles]

i thought there had to be a minimum height on aim for nozzle to nozzle overlap when they alternate on off. what was your duty cycle at.

Almost 100 at the highest speed, tired to keep it over 90.
I don't think aim affects boom height recommendations.

 

[Don Boles]

Don, you must have been trying to avoid drift? yesterday I had to leave some edges of pea fields to avoid drift into barley next to it.

That was the entire goal, minimize drift.
Had to give up about 3:00, neighbor cereal crop right beside downwind NW wind about 40 km.
Finished tonight.

 

[Don Boles]

9 psi and nothing will happen here need a minimum of 15 to keep things going.

Yeah I got to thinking if the tank was full I'm not sure you'd need the pump on, let hydro-static head do it. Meh, not quite. Doesn't lift the 0 to 200 hard plumbed gauge off it's needle stop.
No screens over nozzles may help, 110-02 twin exit Teejets.

 

[madcow]

that's a good wind. with the herbicide you use can you flip over to a bigger droplet nozzle and use drift retardant's?


I am using old school chemicals and they seem to have a lot of forgiveness to them.

 

[Nitro 1]

So every trick you could think of.........and you did not think to put some crop oil in your tank ?

 

[Don Boles]

So every trick you could think of.........and you did not think to put some crop oil in your tank ?

At a remote location, spraying by myself with slowly increasing wind speeds and hoping to not get winded out, yeah, that's all I could come up with, strictly operational changes.
At such low pressure droplets are fairly coarse and I was was only spraying 50 L/ha, weed control will be interesting.
Yes done, but was it worth doing?

Raven pump speed rate controllers struggle with such low flow and pressure settings, ball valves I think are better with such use.