Soil samples taken in late summer and fall are better than those taken in winter through early spring because they come closer to representing the soil’s nutrient status as it affects crops. Avoid taking samples when soil is wet or frozen because it will be difficult to handle and mix them. Do not take soil samples immediately after applying lime or fertilizer; wait several months or even longer if the weather is dry.
Send samples to a soil testing laboratory well before you need the recommendations. Allow about three weeks for the samples to be processed and the results to be sent to you. Samples sent to the laboratory between March and June may take longer to process. Avoid delays by sending samples between July and December.
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