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Soil Sampling Guidelines - Purdue University

Author: Jason P. Ackerson,Assistant Professor of AgronomyAY-368-WSoil testing is an integral part of a soil fertility management program. Effective soil testing provides information on the fertility status of soils within a field that can be used for making fertilizer or lime application recommendations, monitoring changes in soil fertility over time and even identifying and targeting low fertility soils within larger fields. Informative soil Sampling can improve on-farm nutrient efficiency, leading to increased return on investment for fertilizer and lime application and decreased risk of off-site nutrient movement. Regardless of the goal, reliable soil testing starts with proper soil Sampling . In this article, we will outline the basic principles of agronomic soil Sampling , covering the basic principles of soil sample collection and providing Guidelines for establishing an effective soil Sampling and testing Collection and HandlingProper soil sample collection relies on three principles:1.

Soil sampling for spatially explicit management 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. By correlating the soil test results with the area of the Figure 3.

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