From

Location

Message

Date Posted

Western PA

Hello,

Does anybody know what the correct apllication rate is for this product: Immunox (2% Myclobutanil)?

When applying this product do you spray the top and bottom of the leaves or do a soil drench?

I am in western, PA when do you think the best time is to start applying fungicides?

How often do you apply this product?

Thanks in advance for the help!

3/28/2009 10:01:01 PM

[email protected]

Is this the one you have?

http://wsprod.colostate.edu/cwis487/hup/LabelFiles/Spectracide.9688-165-8845.ImmunoxLawnDiseaseControlCON.pdf

"Yes" you need to treat both sides of the leaves. Pay particular attention to the bottom

3/29/2009 5:49:45 PM

Western PA

Yes, That is exactly it.

This is a systemic can the leaves absorb the the fungicide and take it into the plant, or does it just coat the leaves and deter the fungi from starting?

Thanks

3/29/2009 6:48:47 PM

[email protected]

Myclobutanil is a basipetal penetrant. A true systemic (acropetal penetrant) could be soil applied then found coursing up through the vascular system. Not so most fungicides. Only Aliette/Agri-fos/etc can truly translocate up & down.

Myclobutanil can only penetrate locally. It doesn't get all the way through a leaf even with the most advanced penetrating surfactants.

It coats the leaf & penetrates the cells on the treated side.

Contact fungicides protect a leaf only until the leaf outgrows the protective layer or until sunlight (& to a lesser extent rain) degrades the layer. Systemic fungicides have limited protective properties but they can kill a fungus after it has gained access to the plant.

No fungicide can do everything. Hence we find what works best for the problem we're dealing with at the time.

4/3/2009 9:59:51 PM