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Guidance on Soil Testing

If you are thinking to get the soil tested in your garden or yard. While choosing the sample the sample soil shouldn't be taken from the surface but approximately six inches deep. To do the soil test correctly you need to have a word with a soil testing lab giving reliable horticultural soil testing services.

You can also purchase the test kit from them that provides direct pH instead of number or value.

Nutrient availability is affected by soil pH. Plants perform best in various soil pH ranges. Slightly acidic soils, pH amounts of 5.8 to 6.5 are perfect for vegetables, grasses, and ornamentals. Soil pH values below or above these ranges may lead to less vigorous expansion or signs of nutrient deficiencies.

Nutrients: There are 3 types of nutrients for optimum plant development: main, secondary, and micronutrients. The secondary minerals, calcium (Ca), magnesium (Mg), and sulfur (S) are demanded in smaller amounts but are still vital for good plant growth. 

                                          

Plants just require very tiny amounts of micronutrients including zinc (Zn) and manganese (Mn). Keeping up the soil pH at the appropriate value will fix most deficiencies of micronutrients.

Nitrogen: Nitrogen testing isn't wise since the amounts of available forms of nitrogen are extremely water-soluble. The nitrogen goes fast through the ground with irrigation and rain. 

The recommendations for how much nitrogen necessary is based on the kind of plants you mentioned that were being increased in the sample analyzed.