How to set application rates

Step 1: Perform a soil test measuring ppm units. The most important two elements are the phosphorus (P) and potassium (K) totals.


Step 2: According to the plant needs, decide which element is more crucial to be supplied to the crop being grown, so as to determine the specific NPK ratio mix.


Step 3: In tables 1 and 2, according to soil test results and the crop, identify if the specific soil type falls in the low, optimum or high category.


Step 4: In relation to the specific soil type category indicated in Tables 1 and 2, identify the Haifa Turbo-K™ application rate.


Stage 5: According to the application rate indicated in Table 3, calculate the amount of Haifa Turbo-K™ to be applied.


  1. Potassium (K) soil test results for a loamy soil are 160 ppm. The crop being grown is tomato.

  2. As indicated in Table 2, this is an optimum level.

  3. From table 3, the application rate is 101 kg per hectare.

  4. To calculate the amount of Haifa Turbo-K™ to be applied based on a N-P2O5-K2O formulae of 14 -14 -17 proceeds as follows:

    • (Recommended application rate) ÷ (% K2O in Haifa Turbo-K™ formula) x 100kg = the amount of Haifa Turbo-K™ to be applied (kg per hectare)

    • 101 ÷ 17 x 100 = 594 kg per hectare (rounded to 600kg= 24 bags)


Next: Table 1: Soil phosphorus (P) levels