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2017 Fall Nitrogen

10964 Views 57 Replies 18 Participants Last post by  wardconnor
Lets start the thread for this year. Here is the link to the article: http://thelawnforum.com/viewtopic.php?f=22&t=753

The midwest had a fairly wet and cool summer. Temperatures are currently hovering in the danger zone for fungus, but we had our share of cool nights. Two things: 1) fall PreM is really a most and 2) I think we will be able to start sooner (at least in the midwest).

To elaborate on the PreM. Normally the summer heat kills most of the Poa annua. The rains and the not so hot weather allowed some of the Poa to survive and I've seen some seed heads. The PreM applied in the spring has lost/will soon loose the protection it was giving. The Poa will soon drop those seeds and will germinate. It will go dormant in the winter and show it self in the spring. I recommend an application of PreM now to break the Poa annua cycle.

References:
https://www.extension.purdue.edu/extmedia/AY/AY-41-W.pdf

01Aug2017 - Definitely in the shedding period in Indy. The cool temps have helped. Fhe extended forecast shows that fall is here. I started to apply organic sources (cracked corn) since they take some time to break down.

06aug2017-my lawn is done with the shedding. I started dropping Milo to get things going. Fungus is still a concern.
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Will this keep out the wild onion/garlic for the whole winter also? My yard gets crazy with this winter annual.
I plan on spraying Tenacity after the quick up-tick of mid 80s weather breaks later this week. Prodiamine will follow shortly. Remember, I did a spring/summer reno so this Tenacity app is my "60 day mark" application. Since I started spreading out my watering schedule, I noticed the Poa Annua starting to die off a bit but it will be back soon, so I plan on getting a barrier down ASAP.
Vols_fan08 said:
Will this keep out the wild onion/garlic for the whole winter also? My yard gets crazy with this winter annual.
I dont think any of the PreM works with wild onions. Those need round up. Pulling is somewhat effective if you could get all the bulbs.
Try the proplugger for wild onion.
https://youtu.be/BpR7tsUbIc0
g-man said:
Vols_fan08 said:
Will this keep out the wild onion/garlic for the whole winter also? My yard gets crazy with this winter annual.
I dont think any of the PreM works with wild onions. Those need round up. Pulling is somewhat effective if you could get all the bulbs.
That's just awesome :|
well, I did buy prodiamine this year, for this task in particular. One question. If I have some poa t I need to rid myself of, do I spray it with round up, wait for browning and then apply prodiamine to avoid the marked areas?

Or, leave the poa t and wait for spring, targeting the bigger pest in a poa A take over.
I would deal with poa trivia as soon as I see it. No point in letting it get a hold of you lawn.

If you have kbg, then it will spread and fill the holes. If you want to overseed, then yes avoid those areas. I would even take some of the soil out at seed time and replace it with bagged soil.
I'm thinking of overloading the lawn with Milorganite like fertilizer this fall at 1/2 pound of N per 1.000 per week untill temperatures drop below 5 C.
Any thoughts on the damage it might do?
I don't see a problem with your approach other than 5C. As temperature drops milogarnite will struggle to be broken down by the microbes. I would stop sooner (8-9c). Since you are applying a high rate, you want to it absorbed by the soil this year instead of next.
Good point.
Should I be looking at average air temperatures, highs, lows or soil temperatures?
If you could get soil temp, then 55f temp. Here is info on milogarnite. In my area I stop milo around late sept.

http://www.milorganite.com/using-milorganite/how-it-works
What about synthetic nitrogen, besides the late fall winterizer
Non organic fertilizer.

I have a bag of 25-x-x I bought as a summer application, till I came here and learned not to put it down.

So I saved it and will use now.

Then add Milo

And then at the end of season add winterizer, in which case I use synthetic starter fertilizer, as a final app before winter
Yes you could use it. If you go to the bag it will tell you the percent of fast acting vs slow. Some times they call it water soluble vs coated or slow release. Avoid using slow release into late Sept. since it takes longer to break down. You could apply 4lb/k of that product in a month.
Updated the post to reflect current conditions for Indy.
kolbasz said:
What about synthetic nitrogen, besides the late fall winterizer
Many people use synthetics all year round. It's not pure evil, but in general we don't put it down mid summer because most lawns are stressed this time of year from the heat and lack of water. If you keep it sealed, you can save it for whenever you decide it's time to use synthetic. I use it spring/fall personally, in addition to milorganite.
I use urea at 0.5 lbs N/thousand every 2 weeks through fall/winter. I typically add some potassium sulfate to it, and ferrous sulfate on occasion for color.
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