Why calcareous soil and high pH are not the same measurement, and how high pH changes iron, zinc and phosphorus availability.
Lime is the carbonate material in the soil; pH is the reaction, and they are not the same measurement. High pH changes the availability of iron, zinc and phosphorus. Feeding is not tied to acidifying or to a blind micronutrient before that change is measured.
A foliar application is considered when the root cannot take up an element whose availability has fallen in the soil. It does not replace the soil measurement.
How to read NPK, micronutrients and the guaranteed analysis, and why the percentage is not the field rate.
How urea, ammonium and nitrate behave differently in soil, and why one large dose is not the same as splitting it.
What a leaf analysis shows that a soil analysis does not, and why sampling time and leaf choice change the reading.
How to judge compost maturity before field use: temperature, smell, salinity and the analysis, not color alone.
Why phosphorus becomes bound in soil and why raising the rate without a soil analysis is not the management.
