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Soil Sample: Soil testing characteristics can vary significantly from one spot to another, even in a very little garden or field. Taking samples everywhere in the field is crucial to urge the most correct measurement of nutrients and different organisms. An example of this is often along gravel roads where the soil may have a lot of lime from the mud from the roads settling down in the soil, or an previous animal feedlot where phosphorus and nitrogen counts might be beyond the remainder of the sphere. บริษัทเจาะสำรวจดิน There are various methods to gather the soil sample in the field, around 40 acres of land it's advisable to require a soil teat with the sample at least in twenty totally different areas so the average value of fertility within the land is found.