Thread Tools   Display Modes
Old 02-09-2001, 09:44 AM
KirbysLawn's Avatar
KirbysLawn KirbysLawn is offline
Millenium Member
Join Date: Jun 2000
Location: Just east of Charlotte, NC
Posts: 3,486
Originally posted by lawrence stone
Originally posted by Mscotrid
Tupersan is overpriced and has a short residual. You would be better off to get your seed in the ground as early as possible and after germination come back in with Dimension.

Dimension has pre-post emergent control
This is really bad advice. You need to go and read the label.

Exactly where did you get your pesticide license?

In a Cracker Jack box?
Could you elaborate on which part of the post is incorrect and give us guidance on the correct information?
Reply With Quote
Old 02-09-2001, 12:03 PM
lawrence stone's Avatar
lawrence stone lawrence stone is offline
Join Date: Jan 2000
Location: anthracite valley, commonwealth of pennsylvania Winter residence: Charlotte County FLA
Posts: 2,079
Jim explained it all in his post why this is a bad practice.

Mscotrid wrote:

>You would be better off to get your seed in the ground as early as possible and after germination come back in with Dimension.

1.If you apply this product when the turf is new you will stress the plant while it should be building up reserves for the summer sress to come.

2.Buy not applying Tupersan at time of seeding the the turf has to compete with all the weeds that will germinate.

3.If you do not apply tapersan the lawn won't be as thick do to weeds and the customer will demand you kill the weeds.
This is a callback and results in lost income.

The above applys to commercial and residential turf.
When it comes to sports fields I treat the fall sports fields in the spring in a completely different fashion.
Reply With Quote
Old 02-09-2001, 02:54 PM
GroundKprs GroundKprs is offline
LawnSite Bronze Member
Join Date: Dec 1999
Location: South Bend, IN
Posts: 1,969
It's what's underground that counts

If you have never seen the effect of root inhibiting pre-emergents on grass roots, here is a sample.

The plants on the left received no pre-em; those on the right received pre-em after germination. ( larger image ) These are crabgrass plants dug up early July; germ here is usually around mid-late May. The poor guy at lower right had one root below the limits of pre-em barrier, and that was the only decent root. Roots on all plants dug up that had received pre-em after germination were just stubs - can see it in enlargement in plant upper right.

Now, since new roots of desireable grasses grow from the crown, which is above the pre-em barrier, the use of pre-em will inhibit new root growth in your desireable grasses. To my knowledge, the only pre-ems that will not have this effect are Ronstar and siduron. I have gone out with another operator on his lawns, and told him which ones had pre-em and which did not, just by looking at rooting in each lawn. Roots views are obtained using a cup cutter; try to get a 6" deep sample.

In the case of a newly seeded lawn, application of a pre-em - other than siduron or Ronstar - sooner than a year after seeding is going to reduce the vitality of the turf by reducing root growth. (IMHO)

Wish I had taken pictures of Dr W's lawn. This was a 23K lawn sodded in Dec. Had pre-em for 4 years, and lawn was riddled with patch disease, dollar spot, and red thread all that time. All this time, there was absolutely no root growth into the soil - we attributed that to the extremely poor soil. In 5th yr, Dr W wanted to overseed, so pre-em was not applied. In mid-March of 6th year, roots had grown to 3"-4" deep; By mid-April, roots were 6"-8" deep. The only difference was that pre-em had not been applied.

For a production oriented operation, pre-em is a good thing, because you can rack up the apps with minimal fuss from clients. When disease or other pests harm the turf, they can be blamed on the disease, insect or other problem, and more $$$ can be churned. If you are challenged to grow a really healthy lawn, you will use a heck of a lot less pesticide, and your clients will pay more for your time involved in performing an intelligent, responsible service.
North central Indiana
<a href="">Learn About Turfgrass</a>
Reply With Quote

Thread Tools
Display Modes

Posting Rules
You may not post new threads
You may not post replies
You may not post attachments
You may not edit your posts

BB code is On
Smilies are On
[IMG] code is On
HTML code is Off

Forum Jump

Layout Style:

Powered by vBulletin® Version 3.8.6
Copyright ©2000 - 2016, Jelsoft Enterprises Ltd.
Copyright ©1998 - 2012, LawnSite.comô - Grand View Media
All times are GMT -4. The time now is 08:54 PM.

Page generated in 0.07139 seconds with 10 queries