Agronomists and soil scientists agree — when collecting soil samples to gauge lime or nutrient needs in your fields, it’s worth spending time and money to ensure your samples are accurate to maximize yields and manage input costs.
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Soil Sampling
Good sampling accounts for variability, allows for adjustment
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Experts say the keys to getting a good soil test include getting a representative sample, getting it from the right depth and knowing the management history of the land.
Antonio Mallarino, an Iowa State professor of nutrient management, recommends 15 cores per zone or at least 8 to 10 per grid.