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Old 06-23-2014, 04:28 PM
Skipster Skipster is offline
LawnSite Senior Member
Join Date: Dec 2010
Location: Billings, MT
Posts: 861
Sounds to me like you used the wrong surfactant. The ProSedge label calls for only non-ionic surfactant containing no less than 80% active material. Using MSO can injure turf.

Although the Celsius label says MSO is acceptable for use, Iíve seen phyto from that combination, too.

I think the lesson is pretty clear here: donít use MSO unless the label specifically calls for it. If youíre not spraying Drive, you probably donít need MSO.

The discolored spots should recover, but donít fertilize them Ė that will just make it worse. Give them enough water so they wonít dry out and youíll see improvement in a couple of weeks.
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