stone apps 2002

Discussion in 'Pesticide & Herbicide Application' started by lawrence stone, Dec 26, 2001.

  1. First 3 apps are Scott’s 20-7-8=100% coated w/2.8% iron and micros at a rate of 1/2 lb of N/sq ft or 20K sq ft/50 lb bag.
    First round starts March 15, 2nd May 1, 3rd June 15.

    Next 3 apps are Scott’s 30-3-9= 50% coated w/2% iron at a rate of 1/2 lb of N/1k sq ft or 30K sq ft/50lb bag. Forth starts August 15, fifth September 15, sixth October 15.

    Last app starts November 1 and that is pellitized limestone.

    No pre-emergent herbicide is used. A spot treatment of post-emergent herbicide is applied every round. A combination product with insecticide can be substituted for round three or a straight application of insecticide can be also applied in conjunction with the fertilizer.

    These applications are applied to control turf growth when used in conjunction with a full service lawn and landscape maintenance program. Total yearly N per sq ft is 3.0 lbs synthetic plus the N from the recycled grass clippings.

    Comments and suggestions by actual soil scientists are welcome.
  2. Opps wrong forum.

    Please move to pesticide app forum.

  3. turfquip

    turfquip LawnSite Senior Member
    Messages: 860

    Stone I don't think that system is ideal for residential home lawns. Sports grass maybe but in my view that's way too much N in the Spring.

    You shoudn't need 1.5 lbs of N during the rainy season??

    I like the spot apps approach to weed management. Like you say if crabgrass breaks out then you've got Acclaim or other post to mop things up. Broadleafs are easy to manage.

    IPM dictates that insect control be applied as a curative, not a preventive? Am I right about that ?
  4. Turfquip PSU recommends 2 to 4 lbs per season for bluegrass.

    Do you realize I am applying at 1/2 the bag rate? So the 20-7-8 is actually 10-3.5-4 and the 30-3-9 is 15-1.5-4.5.

    Plus the spring apps are 100% coated urea. I can't see why a 1/2 lb of 100% coated every six weeks is overkill. In order to crowd the weeds out I need to propagate turf with vigorous reproductive abilities.
  5. The stone-a-green has room for two can sprayers.

    If you want nice turf you have to apply some Merit or roll the dice and deal with the possible consequences.
  6. Scraper

    Scraper LawnSite Bronze Member
    Messages: 1,656

    Scott's? Stone, I thought you used Lesco products.
  7. GroundKprs

    GroundKprs LawnSite Bronze Member
    Messages: 1,969

    Would be better to inquire about fertilization regimen from a turf agronomist, rather than a soil scientist. Today most turf specialists in cool season areas are recommending that 2/3 of N applied to turf should be applied in the fall. See table 2 in <a href="">AY-22: Fertilizing Established Lawns</a> for a proper schedule of fertilization. I'm not trying to sell everyone on IN turf programs. It's just that Clark Throssell was a really good man on turf - we recently lost him to USGA. And Zac has been around working with C3 grasses for a good while, also. Some others recommend an additional application of N in October. The current thinking is that it is better to feed heavily in fall, to establish good rooting and stored energy. Spring N has been shown to basically just increase shoot (leaf) growth and enhance seedhead production.

    First N of the year is not applied until after May 15, when natural flush of growth and seed production is over. That is when the cool season grasses are getting ready to survive the summer heat, growing deeper roots and storing energy for stress period.

    I do have 2 lawns that seem to need a shot of N in spring to get going, but these only get 0.25 to 0.35 #N/K, often in a starter fert formulation high in P - you always see a good response from turf from a P application.

    There may be use for frequent light spring applications of N, in special cases. Dr. Vargas at Michigan State has been running tests of just this format for a while. Forget what his rates and frequencies are, but he was having great success in certain areas of disease tolerance. Generally, though, spring fertilization - especially if excessive - can lead to disease problems.
  8. groundsguy1970

    groundsguy1970 Banned
    Messages: 166

    In WA. state it's like this:
    Fert on all the holidays...
    Valentines day Fe/ w/ insect control .5 lb N
    Easter .5 lb N
    Memorial Day .5 N
    4th July .5 N
    Labor Day .5 lb N
    Halloween .5 N
    Thanksgiving 1 lb N
    We mow to x-mas then sometimes start in so .25 lb N in Jan..
    our wet months I use pcscu or ibdu....."dry"months scu
  9. Jim the low N way maybe the way to go per a state paid professor but I have to use what works commercially.

    People who buy lawn care services want results ASAP.

    Plus I am one pound and a quarter lighter than the Groundsguys

    If there is an el nino? in effect the summers at my location are cool and wet just like the Northwest USA.
  10. Turfdude

    Turfdude LawnSite Bronze Member
    Messages: 1,899


    Even the Rutgers coop extension service preaches what groundskeeprs is selling 2/3N fall an 1/3N spring. I realize you're doing ligtr rates and I also here that your area gets very littl to no crabgrass at all (God bless you for that one). I personally never go 20% or higher N inearly spring. TOOOOOO much topgrowth!


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