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Detailed explanation-1: -Because samples taken from these locations would not be typical of the soil in the rest of the field, including them could produce misleading results. Areas within a field where different crops have been grown in the past should be sampled separately, even if you now plan to grow the same crop in the whole field.

Detailed explanation-2: -There are two main methods for soil sampling in spatially explicit management-zone-based sampling and grid sampling. With each method, soil samples are collected from predefined areas in a field.

Detailed explanation-3: -Push probes, hammer probes, and bucket augers (Figure 1) are commonly used because they are capable of taking uniform samples with depth. Figure 1. Examples of soil sampling equipment: a soil push probe, hammer probe, and bucket auger. Along with a probe, a clean plastic bucket should be used.

Detailed explanation-4: -What Does Field Sampling Mean? In a field sample analysis, a surveyor may remove a small sample of the earth for examination. The sample may consist of a number of sample types, such as a portion of the soil, dirt, sludge, drinking water, industrial waste, and even the air.