Soil samples representative of a field are the best guidelines to determine fertilizer needs. This publication describes proper procedures to collect representative soil samples and includes a diagram on how to sample a furrow-irrigated field.
- Descriptions of sampling approaches for uniform fertilizer application and variable rate fertilizer application, including grid and zone approaches
- Selecting proper sampling depth
- Collecting soil cores
- Soil sampling equipment
- Timing of sampling
- Handling of samples
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