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blewb

Soil pH testing.

19 years ago

I could've sworn I posted about this yesterday but apparently I didn't.

I successfully managed to grow some blueberries (Climax and Tifblue. Climax tastes a lot better) last year with this forum's help and the plants also managed to survive the winter (with no help on my part lol). So now that my blueberry stalks are infested with buds again (that are very quickly turning into fresh, green leaves to compliment the old leaves) I need to know how to test the soil for pH.

Last year I bought a $5 kit that was a one shot thing. Rip off in other words, but my soil was fine the first time around so I just put in some sulphur every few weeks (we have lime in our water) and went from there. They grew, bloomed, I ate, and they went dormant for the winter.

Now they're back. I need to know how to test the soil pH? I have pH paper, but do I do a soil - water ratio? Or do I stick the pH paper in a damp section of soil or what? And should I use the soil on the top or dig deeper and go for about the middle area?


I'm actually really looking forward to this season because last time the bushes had to grow a lot. They should yield a lot more blueberries this year.

Comments (8)

  • 19 years ago

    So does no one have an answer? It doesn't have to be with pH paper...I just need a relatively cheap way to get the PH of my soil..

  • 19 years ago

    Get a Rapitest pH meter for $15. Works great for me, lasts forever. Rub the probe clean before each use to get a good reading. Read the instructions on the box for how to use.

    That reminds me, I haven't checked my pH since last spring..

    Scott

  • 19 years ago

    You will need to add some of your soil to some distilled water. The ratio is not important, as the distilled water has little if any buffering capacity, but it has to be distilled and not tap water. You can then measure with pH paper or a pH meter. I do not know which (if any) cheap pH meters are worth using, but pH paper will give you a good ballpark figure for your pH. Anything between 4.5-6 will be fine, maybe even 6.5 for rabbiteyes. Unless your plants are becoming chlorotic, your pH is probably OK.

  • 19 years ago

    by chloric, kiwinut means, the leaves are yellowing rather than green.

    I'm lazy....I just add about 1-2 cups of hollytone a season (and a little more if the leaves yellow). If you have weeds around your blueberries its likely that the soil isn't acidic enough.

    ~Chills

  • 19 years ago

    Check with your county extension agent, as many states offer free or very low cost soil tests. This will give you info on pH as well as the levels of all the nutrients in the soil. I wouldn't wait for your plants to become chlorotic, either.

    Chills, your statement "If you have weeds around your blueberries it's likely that the soil isn't acidic enough" couldn't be farther from the truth. Many weeds can grow and even flourish in a wide soil pH range.

  • 19 years ago

    Well I got one of the pH meters as suggested above. Brilliant little thing. Cost me $10. Half of me wants to take it apart to see how it works lol.

    On one plant the pH is 4.5, so about optimum. On the other it's closer to 4. Do I need to raise the pH? And if so how?

    There's no lime in our water. I was mistaken about that. Our water shows a more or less even 7.0.

  • 19 years ago

    Good Lord, Blewb, first you are worried about lowering your Ph, now you worry about raising it. With the success you had the first season, just keep doing what you were doing, but reduce your applications of sulphur. Your blueberries should be pretty happy with a Ph in the range of 4 to 4.5. My native soil is pretty close to neutral, and all I do after planting in well prepared soil is to scratch in a handful of iron sulphate and ammonium sulphate around the plants each spring. The blueberry plants are happy as clams, with dark green leaves and lots of berries. As long as they look like that, soil testing is not urgent.

    Your Ph tester works like the battery in your car, using two metals, one of which gives up electrons to the other in the presence of an acid. It is this flow of electrons that is measured by the meter's needle.

    Don Yellman, Great Falls, VA

  • 19 years ago

    Ah, that makes sense.

    And I thought 4 was too low for blueberries which is why I was considering raising it.

    Anyhow we have a great rainstorm going on outside right now so the blueberries should be happy. And as I was digging through the soil there were still bits (all be it small ones) of sulfur still in the soil from last season so I piled some mulch around the base so I guess we'll see how it goes.

    I was worried about the pH initially because the leaves from last year were turning purple which I thought was due to a lack of phosphorous and a low acidity was preventing the up take of the phosphorous. When I pulled at them, though, they snapped off with relative ease so I guess they were just dead.

    Anyhow I have a lot of growth on one bush and the other is starting to grow some leaves and a few buds so I guess I'll just sit back and watch for now.