From

Location

Message

Date Posted

Argentina - sarichoscar@yahoo.com.ar

I know I'm high in potassium ... I like that I have to reach values ​​of phosphorus and nitrogen and the number of pounds of each to level the ground.


Total organic matter (%) 4.68
Organic Carbon (%) 2.71
Total Nitrogen (%) 0.23
pH in water (ratio 1: 2.5) 6.92
Electrical conductivity (ratio 1: 2.5) (us / cm) 562
Sulphate sulfur (ppm) 30.80
1:7 Bray phosphorus (ppm) 107.50
Cta nitrate nitrogen (ppm) 40.80
DTPA EAA Zinc (ppm) 1.84
EAA DTPA Copper (ppm) 1.35
EAA DTPA iron (ppm) 52.60
EAA DTPA Manganese (ppm) 40.10
Cation exchange capacity (meq/100gr) 19.20
EAA exchangeable calcium (ppm) 2041
EAA exchangeable magnesium (ppm) 356
EAA exchangeable potassium (ppm) 1156
EAA exchangeable sodium (ppm) 210
Azomethine assimilable boron (ppm) 1.56
SMP buffer pH 7.5

My floor is 45 x45 feet, and my season starts in late August.
Thank you and sorry for the inconvenience.
Oscar.

4/11/2013 9:40:51 AM

Germany

Quite a while since your post appeared and looks like nobody had suggestions for you. In my opinion P looks good, wouldn´t add more phosphorus. Nitrate N looks fine as well so far could be different in August, but should still be enough for a good start and then you can add little amounts of N fertilizers. K seems to be the troublemaker, would be great if you could half the K content and get Ca to 3000 ppm, Mg to 500 ppm. How did you reach such a high K concentration? Did you add heaps of compost or K-fertilizer? If there´s a chance that most of the K is still in the top 1 ft layer of your patch, I would try a deep plow to mix it with the soil from 2 ft depth. This should then lower the K concentration. Then you should add some gypsum and some dolomite to raise Ca and Mg level. Can´t tell you how much, you would have to do the deep plow and some tilling first, then get another soil analysis from samples of the new 1 ft top soil layer, and then ask the Langley soil estimator how much gypsum and dolomite (or maybe gypsum and epsom salt) you would have to add to adjust Ca and Mg levels.

Plan B: If the soil is that rich in K down to 2 ft depth, then you need to water the K out of your soil, or you need to add a 1 ft layer of "inert" soil (which almost lacks K) and mix it with your current top soil. Then you should be down to 600 ppm of K and that should make it easier to adjust Ca and Mg levels.

4/24/2013 3:06:32 PM

Argentina - sarichoscar@yahoo.com.ar

Thank you very much .... by the data .. I'll get to work urgently ...

4/25/2013 12:08:44 PM