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Sampling is done at the rate of one sample for every two-hectare area. However, at least one sample should be collected for a maximum area of five hectares. Â Soil sampling is the process of taking a small sample of soil, which is then sent to a lab to determine the nutrient content.
The soil can also be tested for its chemical, physical and biological properties, which are critical to plant nutrition.
Basic plant nutrition requires the presence of nutrients such as nitrogen, phosphorus, and potassium – soil sampling can also determine the pH levels of the soil alongside humus content, available lime, complete sulphur content, and total CaCO3.
The analysis of the soil is carried out by taking samples of the soil and performing laboratory tests, which is then followed by an interpretation of the results. Further recommendations for fertilizer and soil preservation can then be provided.