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Questions related from João Jesus
I was wondering which methods could be considered the best for a good assessment of soil pH. Namely, which extraction (saturated soil paste; 1:1; 1:2 soil to water extractions) could be used...
08 August 2014 5,026 38 View
I was wondering if it might be better for the determination of soluble salts from a soil to prepare a saturated soil paste and dilute it by 5 rather than prepare a 1:5 dilute water extract. A...
02 February 2014 8,480 15 View
I am having trouble testing GR in my soils as the non saline soil have a positive GR. Does exchangeable acidity interfere with the test? And for potassium, how much must be present to interfere...
02 February 2014 5,966 1 View
While testing for total hardness, the protocols indicate that high levels of dissolved or particulate organic matter may interfere. How does it interfere? How much organic matter is necessary for...
02 February 2014 1,589 5 View