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questions with pre emergent control

boots1227

LawnSite Member
Location
bronx , new york
Hi guys , i am new here. My name is Brian . I just would like to say that this is awesome to finally be able to talk with others in the business that go through what i go through , during a day at work. My first question is : I always wind up with crabgrass in the very end of july and august and september . I used scotts last year and the growth of the grass was crazy. I live in ny, the bronx section. On April 15th last year i put down my step one with tupersan , just incase i have to fix anything and then about May 15th i started with the scotts turf builder with halts crabgrass preemergent . It held out the crabgrass until the end of july begining of august . What can i do to keep at least 90% of it out at least til the middle of sept. I usually start my spraying then and do my repair work in october. I know i am going with some slow release fertilizers this year and i know of dimension , barricade, and team ,but how can i put it all together , so i don't burn the lawn in the summer and keep the crabgrass out. I am looking at lebanon and they have some cool products. Any ideas.....Thanks for any help.

Take care
Brian
 

RAlmaroad

LawnSite Silver Member
Location
SC
Brian:
Regardless of the kind of Pre you use on fescue or bluegrass, the AI does not last all season, especially if it has been a cool rainy season. Generally, if you get a full 60-90 day activation, that's about as good as it gets. True, for some, the more you put down the longer it will last. But--it's going to leach or just die out. With that in mind, when you applied the Pre-Em or growing season will determine when you need to put down another application. You're probably carrying your Pre-Em with fertilizer, so you might think or try a split-application; i. e. April 15 and July 1st. This schedule will give you a grace period of about two weeks. If excessively rainy season then back up your July application. Timing is everything.
 
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boots1227

LawnSite Member
Location
bronx , new york
Brian:
Regardless of the kind of Pre you use on fescue or bluegrass, the AI does not last all season, especially if it has been a cool rainy season. Generally, if you get a full 60-90 day activation, that's about as good as it gets. True, for some, the more you put down the longer it will last. But--it's going to leach or just die out. With that in mind, when you applied the Pre-Em or growing season will determine when you need to put down another application. You're probably carrying your Pre-Em with fertilizer, so you might think or try a split-application; i. e. April 15 and July 1st. This schedule will give you a grace period of about two weeks. If excessively rainy season then back up your July application. Timing is everything.
Thanks for the help. When i do my seeding in the fall i do a mix of perannial rye, kentucky blue and tall fescue. This year i am doing a slow release fertilizer in the beginning of April and then starting my first application of pre emergent around the last week of april first week of may. Then i will hit it again with another pre emergent around the first of July. Any recommendations of the pre emergent i should use...Thanks really for the help.
 

JWTurfguy

LawnSite Senior Member
Location
Metro NYC
By the way, RAImaroads's advice on pre-emergent timing was exactly right, so I'm in no way trying to make it sound like he wasn't. Just thought you might appreciate some help from someone local.
 
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boots1227

LawnSite Member
Location
bronx , new york
By the way, RAImaroads's advice on pre-emergent timing was exactly right, so I'm in no way trying to make it sound like he wasn't. Just thought you might appreciate some help from someone local.
Hi shane i sent you an email. I would be greatful for any help.
Thanks
Brian
 

DA Quality Lawn & YS

LawnSite Fanatic
Location
Rochester, MN
boots - didn't you guys have an inordinate amount of rain last growing season, or am I mistaken? If so, that is going to throw your pre effectiveness all to heck. Make sure you don't go off the deep end just because one season was hard on you crab-wise.
 
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boots1227

LawnSite Member
Location
bronx , new york
boots - didn't you guys have an inordinate amount of rain last growing season, or am I mistaken? If so, that is going to throw your pre effectiveness all to heck. Make sure you don't go off the deep end just because one season was hard on you crab-wise.
Yes we had record breaking months of rain......Thanks for the advice.
 
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