1. Grid Soil Sampling Cody Claflin Soil 4213

2. Objectives Common practices and methods of soil collection Common practices and methods of soil collection Benefits and Disadvantages Benefits and Disadvantages How grid sampling works. How grid sampling works. Conclusion Conclusion

3. Practices Composite Composite Zone Zone Grid Grid

4. Methods Hand Hand Mechanical Mechanical http://www.youtube.com/watch?v=e0yZ8pdZDvY http://www.youtube.com/watch?v=e0yZ8pdZDvY http://www.youtube.com/watch?v=e0yZ8pdZDvY http://www.youtube.com/watch?v=vsALxsO5efY http://www.youtube.com/watch?v=vsALxsO5efY http://www.youtube.com/watch?v=vsALxsO5efY

5. Purposes of Soil Sampling 1.Measure the nutrient content or availability of the soil 2.Identify nutrient deficiencies 3.Predict crop response to added nutrients 4.Build a nutrient management plan H. Zhang 2009

6. Advantages More accurate than a composite. More accurate than a composite. Allows layering of data Allows layering of data Allocates nutrients where they are needed most Allocates nutrients where they are needed most Save money and increase yield* Save money and increase yield*

7. Disadvantages Can be cost prohibitive* Can be cost prohibitive* Not ideal for all situations Not ideal for all situations Time consuming Time consuming Needs specialized equipment Needs specialized equipment

8. The Grid Setting up a field boundary Setting up a field boundary From here a geo referenced grid can be designed. From here a geo referenced grid can be designed. Soil can be collected in a point or composite of the grid area. Soil can be collected in a point or composite of the grid area.

9. How it all works Soil Test Labs Soil Test Labs Results Results

10. Cont. Interpolation Interpolation Recs + Results Recs + Results

11. The Results

12. Differences

13. Conclusion Any sampling is better than none at all. Any sampling is better than none at all. Choose the method that returns the most profit. Choose the method that returns the most profit. Questions? Questions?