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The last 4 posts

Monday, June 18th 2007, 6:32pm

by Fertigation Guru

8.6 is highly alkaline. You are just out of the desired range for St Augstine grass. The range is quite broad, 5.0 to 8.5, however it is not good to be on the extreme ends of this spectrum. I suggest you add some gypsum and humic's to your soil to increase the acidity. Keep adding lime until your reach the 6.5 to 7.0 range. Currently your soil is preventing your grass from absorbing the nutrients from the fertilizer. Once you increase the acidity you should see a dramatic increase in the overall health appearance of your grass.

The good news is this problem is easily fixed with multiple applications of lime. The bad news...you wasted a bunch of fertilizer. Sandy soils have excellent drainage. This means your fertilizer literally went down the drain. Chances are you might see some of the benefit from the fertilizer you already applied, unfortunately it will not be equal to the amount of money you already spent for it.

Traditional fertilizing practices (dry broadcast) allow the fertilizer to sit on top of the sand. Good for your type of soil and you current watering practices (it can only dissolve so fast). Fertigation mixes the fertilizer with water, sending the fertilizer right where the water goes. If you have sandy soil it is easy to overwater. With your fertigator, water more frequently for shorter periods of time. This will keep the application of water on the foilier portion of the plant material and within the root zone. Soaking your roots will not benefit your landscape, it will just waste water and fertilizer...

Tuesday, June 12th 2007, 3:53pm

by gregory1420

yes i live in south florida thats all thats down here is sandy soil..i got a soil test done and the only thing they test is ph and the ph came back at 8.6 i have st augstine grass

Tuesday, June 12th 2007, 8:36am

by Fertigation Guru

It also will not produce the same results. My feeling is that you migh be over-watering. Do you have sandy soil?

Saturday, June 9th 2007, 3:37pm

by gregory1420

fertigation 39k sq ft

i installed a fertigator pro serval months ago. i am trying to fertigate 39k sq of turf man this things eats fertilizer am i crazzy for trying to use this thing b/c regular fertilizer is alot cheaper..