When to fertilize crab grass?

Discuss grasses and how to grow and harvest them.
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southernultrablack
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When to fertilize crab grass?

Post by southernultrablack » Sun Apr 15, 2018 7:46 pm

I broadcast about 5 acres in red river crabgrass today. It’s suppose to be in the 50’s for a couple of days and then climb back into the 70’s. When should I fertilize to best help the crabgrass. Will it start to germinate when the temps get back in the 70’s? Should I fertilize now or wait a week?
For what it’s worth, I planted on the tail end of a big rain and will let the cows walk it in for a bit.

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kenny thomas
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Re: When to fertilize crab grass?

Post by kenny thomas » Sun Apr 15, 2018 8:23 pm

Not gonna be much difference in a week. What are you spreading on it? N works fast, P and K takes up to a few months to break down.
My thoughts only, don't bet the farm on them. KT

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Re: When to fertilize crab grass?

Post by southernultrablack » Sun Apr 15, 2018 8:25 pm

kenny thomas wrote:Not gonna be much difference in a week. What are you spreading on it? N works fast, P and K takes up to a few months to break down.

Was going to do a pasture blend
23-7-14 or something like that.

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kenny thomas
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Re: When to fertilize crab grass?

Post by kenny thomas » Sun Apr 15, 2018 8:49 pm

southernultrablack wrote:
kenny thomas wrote:Not gonna be much difference in a week. What are you spreading on it? N works fast, P and K takes up to a few months to break down.

Was going to do a pasture blend
23-7-14 or something like that.

I keep saying this but what does your soil need to grow crabgrass? The Nitrogen will work within days so I would let the grass get up first.
My thoughts only, don't bet the farm on them. KT

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Re: When to fertilize crab grass?

Post by Douglas » Sun Apr 15, 2018 10:14 pm

Post emergence fertilizing and spraying must be done after Quick-N-Big® and Red River crabgrass is tillering (stooling)
or is up to 2 to 4 inches tall. Too soon can cause stand damage. Never use liquid nitrogen on young crabgrass,
Never top dress or spray weeds at too young a stage, especially on wet soil, and never put broiler litter on just
before planting or volunteer emergence or when crabgrass plants are too small. Refer to Production above.

Also visit our web site http://www.redrivercrabgrass.com , and the Noble Foundation Web site : http://www.noble.org

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