"Increasing the Value of Soil Testing"

We have all seen the evolution of soil sampling, from composite field sampling all the way to intensive grid sampling. Splitting fields into zones is becoming more common and is less expensive than grid sampling. Conventional composite field sampling is still the most common and least expensive form of soil sampling. Some fertilizer dealers and consultants have taken a step forward in improving consistency and increasing the value of composite field sampling, by marking each soil core location while they collect samples. This is referred to as "geo-referenced soil sampling." This procedure is relatively simple using a small hand-held computer (PDA) with a tiny GPS receiver and easy to use mapping software currently available.

By collecting sample cores in the same spots each time a field is sampled, you will greatly increase the consistancy in soil test results. You will also have much better information for monitoring the real increase or decrease of nutrient levels such as phosphorus, potassium, zinc etc. You will also be able to avoid areas of the field such a salty areas or old farm sites, because all of the points will be the same each year.

People who have been doing "georeferenced sampling" for a few years, see more value in the soil test results and can now see trends in nutrient levels based on fertilizer inputs and crop removal. Farmers immediately recognize the improvement in quality. It makes sense to them and they have greater confidence in the test results. This is a great way to improve your customer relations. You will add value to your soil testing program because farmers know this information is worth more and they will be willing to pay more for this service.

For two web sites which show you several options for inexpensive PDA computers, GPS receivers and mapping software go to: www.cpubarn.com or www.prairie.mb.ca.

3379