What are you guys using?

Discussion in 'Fertilizer Application' started by ron mexico75, Aug 19, 2013.

  1. ron mexico75

    ron mexico75 LawnSite Bronze Member
    Posts: 1,697

    When you aerate and overseed are you using starter fertilizer or something else? I have always used starter regardless if its an established lawn or a renovation and had good results.

    I was just doing some reading online and came across a recommendation that if it's already an established lawn to just use a 16-4-8 or 12-4-8 fertilizer when overseeding. I have not heard of that and was wondering if any of you do that or have heard of that.

    I always thought that anytime you put seed down rather it be a new lawn or just overseeding that you would want it high in phosphorus hence a "starter."
     
  2. ron mexico75

    ron mexico75 LawnSite Bronze Member
    Posts: 1,697

    come on anybody?
     
  3. heritage

    heritage LawnSite Bronze Member
    Posts: 1,262

    Hi Ron,

    If soil pH is below 6, I would use DAP (18-46-0). If pH above 7 use MAP (11-52-0). New seedlings needs available P. You can get this from a farm supply.

    A pound of Actual P per 1000 is enough, so either bag will go a long way and spread with ease.

    P is most available in mineral soils of pH 6-7.

    Here (new jersey) P is regulated and the soil test must show low available P before it can be applied at time of seeding.

    Barry Draycott may chime in with some comments with a spreadable and more organic option too.
     
  4. ron mexico75

    ron mexico75 LawnSite Bronze Member
    Posts: 1,697

    Wow those are some high P numbers.

    I am using an 18-24-12 while overseeding but was just wondering.
     
  5. foreplease

    foreplease LawnSite Bronze Member
    Posts: 1,918

    I've had good results with the 18-24-12 a couple days before seeding too. To be honest, I've found that water and even the smallest amount of organic matter gets the seed up well. Then it can be pushed hard with fertilizer When it is a new bare soil seeding I like to use potassium nitrate at 1#K/M as soon as it has been mowed once. One week later I use urea at 0.7# N/M, making the total 1# each of N and K. Then sharpen your blades, you're going to be mowing a lot :) . I have never seen anything fill in so fast as this combination.
     
  6. ron mexico75

    ron mexico75 LawnSite Bronze Member
    Posts: 1,697

    No kidding? Never heard of doing that but sounds pretty neat.
     
  7. ron mexico75

    ron mexico75 LawnSite Bronze Member
    Posts: 1,697

    Anyone else just us starter regardless if its already an established lawn?
     
  8. foreplease

    foreplease LawnSite Bronze Member
    Posts: 1,918

    I tell people it's like Viagra for grass (but rarely tell anyone how I did it). Potassium nitrate is often very hard to find - lots of Homeland Security shipping restrictions on it. An old timer told me to try this combination this several years ago. Giddyup!
     
  9. grassmasterswilson

    grassmasterswilson LawnSite Platinum Member
    from nc
    Posts: 4,535

    I use 18-24-12 as the starter on all my lawns at reseeding.
     
  10. ron mexico75

    ron mexico75 LawnSite Bronze Member
    Posts: 1,697

    thanks for posting, yeah I still plan on using it as well. Just wondering if anyone else subscribed to the using of something else if it was already an established lawn. I guess due to the lack of responses most everyone is using starter.
     

Share This Page