مكافحة بق العنب الدقيقى وخطر إزالة القلف

Removing bark naturally created on the vine Trunk is a big mistake to do while you control mealy bugs in grapes.

Removing that bark confuse the circular system of the vine overall the year.

The vine will not able to protect it self against environment conditions and pests; like hot temperature waves or snow or bad insects…etc... for an example if you tend to spray oil at dormant period it will be disaster after spray or at bud break with removing the bark. it is recommended to spray the oil without bark removal, the vines will be killed in that case. also spray the oil before bud swilling and at night or in the early morning. but if you tend to remove the bark because of heavy infection; just remove the naturally separated bark from the vine but do not remove it very deep or hard and do not harm the interior actual phloem; rather than that will be disaster.

I advise every applicator in grape vines to take the environmental conditions specially in autumn and dormant oil spray applications in his consideration:

1 – Temperature at application time; each product vary to the other for the ideal temperature degree to spray (hormones, oils, foliar feedings, organophosphates, other pesticides; read the label and ILT carefully.

2 – Units of Maximum Dose per acre in one applications (MDA).

3 – Days of Minimum Days intervals between applications (MDIA).

4 – Number of  Maximum applications per season for that product (MAS).

5 – Days of Pre harvest intervals for that product (PHI).

6 – Hours of Maximum Re-Entry  in area after application for that product (REI).

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