mixing pesticide cautions

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Dear farmers pay careful attention in mixing pesticides

Mixing pesticides is a highly specialized topic, this does not mean that

mixing pesticides should not be done, 
but must be done carefully and be aware of the impact of each compound.
The following discussion attempts to study summary of points and more
important topics, but Expert advice is  a very impressive key to success
in agricultural operations. 
by Hamed.kh
Mixing pesticides is a highly specialized topic, this does not mean that 
mixing pesticides should not be done, 
but must be done carefully and be aware of the impact of each compound.
The following discussion attempts to study summary of points and more
important topics, but Expert advice is a very impressive key to success in
agricultural operations. 

1-Use tapered nozzle for spraying the trees with insecticide and for 
spraying with herbicides and fungicides
use linear nozzle (T-JET).

2-we usually set Tractor sprayers pressure between 3 and 4 While 
in most cases because of a slight wind in 
the farm less pressure will be needed so we can allow particles 
mixed with the air to flow, this is more 
recommended in spraying fertilizer, because unlike the spraying
poisons that we need soluble to penetrate
and wash out the leaves into the canopy, In foliar fertilizers, we
just need leaf area to be weep.

3-The combination of copper compounds with phosphorous
insecticides is not recommended.

4-Calcium-containing fertilizers are in conflict with
phosphorus-containing fertilizers. 

5-Fertilizers (macro and micro) are not miscible with any organophosphate.

6-Fertilizers like zinc, boron, and other metal elements such as iron, 
copper and .... available in macro and
micro formulation make rapid chemical reaction with phosphate fertilizers
and it makes the mixture to become
ineffective.

7-Adding soap and urea fertilizer to the herbicides has a cumulative effect.

8-pesticide with EC formulations cannot be mixed with pesticide with WP
formulations or fungicides 
and herbicides.

9-Avoid mixing 2-4-D with iron sulfate.

10-Paraquat does not mix with Roundup

11-Foliar fertilizers containing copper or calcium is better to be sprayed alone.

12-Mixing fertilizers that contain high humic acid with high potash fertilizers
should be done with caution,
especially in the irrigation systems.

13-It is better to water the garden a day before spraying.

14-water-soluble powder fertilizers do not carry the ability to be mixed with 
water-soluble toxic compounds
and also emulsifiers.

15-Mixing herbicides with insecticides is not recommended except in
special cases.

16-Adjuvants are compounds that boost the effects of herbicide up.

17-Its better before any kind of mixing, to prepare a small sample of the 
mixture and after ensuring of 
no conflict, a small test in a small range of field be performed and after
insuring that whole process is 
a safe, then attempt to execute it on large scales. (This issue is more
important in agriculture than garden).

18-Mixing or spraying fertilizers with different PH is not recommended 
and it's better to adjust the
solution with PH regulators.

19-To neutralize the effect of after spraying shock on the plant, it is
better to use Megaful.

20-Megaful reduce amount of pesticide use by almost 30%.