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Author Topic: Fertilizing Oaks ???  (Read 2221 times)

Offline Crittergetter

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Fertilizing Oaks ???
« on: December 15, 2018, 03:51:05 PM »
Looking for info on how to and when to fertilize oaks on my small lease.
What’s the best products to use? How much do you use? When is the best time?
Thx in advance!
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Online Roy from Pa

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Offline PistolPete

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Online forster

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Re: Fertilizing Oaks ???
« Reply #3 on: December 15, 2018, 06:51:12 PM »
Randy,
In general oaks in a healthy (natural) forest ecosystem do not need fertilizing and in fact may be harmed by too much nitrogen.  Trees make their own food by photosynthesizing. Acorn production is a result of the sugar made by the leaves and transported to the roots for storage.  Some of the energy (sugar) produced is used to increase twig and branch growth, root spread and leaf surface area. 

So, cultural practices that enable forest trees to expand their crowns by removing adjacent trees that are competing for crown space do the most good in influencing mast production.  This is called timber stand improvement (TSI).  A forester from the Texas forest Service or a local consulting forester could help you with that.
  For trees growing along the edge of a field or in a pasture, food plot, or opening you can potentially help acorn production by fertilizing the trees that are proven mast producers. Trees growing alone or in a small clump or in a line along a field often produce the most acorns.  Trees in crowded woods produce less acorns per tree but may still produce more acorns per acre.
 
To fertilize trees in an opening, apply about 2 to 3 pounds of 13-13-13  per 1,000 square feet of area from just outside the the drip line (outer perimeter of the crown) to within about 3 to 5 feet of the trunk.  Apply in early spring about one week before to one to two weeks after bud break. Or, buy the tree fertilizer spikes targeted to landscape trees and follow instructions. The tree spikes are more costly but easier to transport.  It is important to get fertilizer to the trees roots and not to the grass and weeds.  Its important to control grass and weeds growing within the drip line with Roundup (41%  Glyphosate). Mix 2 ounces per gallon of water in a backpack or hand held sprayer and spray grass and weed foilage to the point of runoff.  Some people "scalp" or mechanically remove the sod but you want to be careful not to damage the trees fine shoestring like feeder roots that take up moisture and nutrients.  The large roots primarily anchor the tree and provide support.  Anything that compacts the soil or removes the upper soil layers does harm to these fine feeder roots and ultimately impacts acorn production. Cattle or horses congregating around trees can compact topsoil as can heavy equipment or grading.  Also, natural cycles of weather that negatively impact flower production and pollination affect acorn production. Also alternating cycles of insects that bore into the nut and lay eggs that hatch into larvae that eat the fruit affect mast crops.  So fertilizing doesn't work every year.  You have to stick with it and look for results over a period of years by targeting trees you have observed to be producers. 

On leased land you are of course going to need landowners permission to perform the cultural (TSI) practices that have the most beneficial impact on tree health and acorn production.  I have noticed increased acorn production on oak trees with and along food plots just from the annual application of fertilizer for the food plots. Same thing for trees growing in a  fence line along corn or crop fields that get fertilized annually.  Oaks growing in clover and alfalfa, which are nitrogen fixing plants (legumes) also spill over benefits for oaks by self fertilizing.

I have seen some impressive results from fertilizing with 10-10-10 (or triple 13 or 19) along roads or edges or lines through clearcuts where there is soft mast (greenbriers, blackberries, pokeberry, hardwood sprouts...) . Some foresters I met at an Auburn conference years ago shared how they hang stands in residual trees in or along recent
clearcuts and broadcast fertilizer around the stand. The tree sprouts, briers, etc. respond and so do the deer. 

Offline bucknut

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Re: Fertilizing Oaks ???
« Reply #4 on: December 15, 2018, 07:28:50 PM »
I have done it in the past on mast trees of different varieties with good results. It just sucks when you put all that work into it and have a drought or late frost or worms wipe out all the fruit of your labor. I drove a stake about 1' in the ground about every 3-5' on the drip line and dumped a coffee cup full of 13-13-13. Not quite as scientific as forster but worked good enough for me. I generally just used it to make a destination tree so to speak. I also fertilized honeysuckle and berries with good results.
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Online fmscan

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Re: Fertilizing Oaks ???
« Reply #5 on: December 15, 2018, 07:37:57 PM »
What Forster said...

Offline Crittergetter

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Re: Fertilizing Oaks ???
« Reply #6 on: December 15, 2018, 08:45:54 PM »
Thx for the replies. Good info as well!
My goal is to try to attract deer and get them to stay a little longer on my small section of woods. They travel through my side of the lease and bed on the neighbors property. Due to my limited access (one way in and out) I am limited to hunting the edges and try to intercept them so that  I don’t push the deer off the property. If I can coax them to my “trees” it should increase sightings and shot opportunities.
An elitist mentality creates discord, even among the elite!
"I went jackalope hunting but all I saw was does!"
Luck is when preparedness meets opportunity, I just need more opportunities!

Offline Zwickey-Fever

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Re: Fertilizing Oaks ???
« Reply #7 on: December 16, 2018, 08:19:36 AM »
I use Jobes fertilizer spikes for fruit and nut trees with good results on white oak trees. Pending on the size of the trees is how many fertilizer spikes I use. You must place around the trees drip line, outer parameters of the trees branches. They won't be to effective when place close to the tree. Some of the big oaks I have placed about 25-30 spikes around. I usually start spiking the white oak trees in early spring, March. I'e noticed a significant difference in the amount of acorns yield from those trees that I did not spike. I call it my poor mans food plot. I also plant some clover in some shaded areas, as long as you make soil contact the clover should grow. I usually frost seed in the early spring as well. You will only need a rake. Best of luck,
Now therefore take, I pray thee, thy weapons, thy quiver and thy bow, and go out to the field, and take me some venison;
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Offline George Vernon

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Re: Fertilizing Oaks ???
« Reply #8 on: December 16, 2018, 02:16:11 PM »
The botanist and tree surgeon who help me say one can fertilize any time of the year when there is abundant moisture.  But they indicate the best time to fertilize is in the fall.  Root growth and food storage are the main things the trees do after leaf drop.  Spring fertilizer tends to go directly to crown growth.  Root growth in the off season strengthens the base and create reserves that will be used the following spring.

Offline Liquid Amber

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Re: Fertilizing Oaks ???
« Reply #9 on: December 16, 2018, 02:28:14 PM »

Offline Eric Krewson

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Re: Fertilizing Oaks ???
« Reply #10 on: December 16, 2018, 07:27:24 PM »
I used to do it but found every squirrel in the woods homed in on my treated oaks and quickly stripped the acorns off of them leaving nothing to attract deer when the season arrived.

Online forster

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Re: Fertilizing Oaks ???
« Reply #11 on: December 17, 2018, 10:05:02 AM »
Cliff,
The author of the article in your link knows his stuff. I have to complete continuing education work for the Association of Consulting Foresters. Listened to several hours of his talks on forest and wildlife management. He and his grad students do practical research. Anyone can sign up for and listen to seminars, talks etc. and often free. UT, U GA, Clemson and every other bc land grant university have extension wildlife and forestry classes and publications.  Dr. Harper's point about providing good mast producing trees room for crown expansion is primary. Spend your $ and time on that and/or food plots.

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Re: Fertilizing Oaks ???
« Reply #12 on: December 17, 2018, 10:09:09 AM »
Eric: Guess you had some fat squirrels that year. "The best laid plans of mice and men"  too often go astray.

Offline John Cholin

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Re: Fertilizing Oaks ???
« Reply #13 on: December 17, 2018, 07:33:33 PM »
I hail from the northeast where we have an abundance of white, red and black oaks on the three places where I hunt.  I find that the most important factors in producing acorns are a.) the weather during the flowering time for the oaks, just before leaf-out and b.) the weather over the June, July and early August period.  If you have gentle dry weather with light breezes and no rain to speak of during the flowering time the hood of the Jeep will be yellow-green every morning and you will get a good start on a good mast crop.  But you also need enough rain over those summer months to keep the acorns growing.  If we get those two sets of weather conditions then we will get a great mast crop.  If we have a nor'easter come in during the flower time then it will be a bleak year for acorns.  If it is a hot dry summer don't bet on an acorn crop - make other plans.  This year in NJ and eastern PA we had both a great flower time and a really wet summer.  We got buried in acorns.  But further north the weather was too wet during flower-time and the summer rains didn't make a difference the mast crop was disappointing.

That's all I know.

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