Grid sampling reveals how the nutrients are distributed across a field. By collecting more soil samples on a field we gain a better understanding of the nutrients available. By understanding the nutrients available, we can be confident the fertilizer dollars are being used efficiently.
In each of these cases the soil sample allows for the fertilizer prescription to be optimized and the chance of a return on the investment improved.
Grid soil sampling and variable rate application of lime, gypsum and fertilizers adds a level of control and security to a fertilizer program.
Over-application of lime can have a negative affect on the crop by increasing the soil pH beyond a neutral level. This causes some nutrients like phosphorus to become less available for the crop. Grids provide a way to prevent the over-application of lime and at the same time save on input costs.
In some areas, regulations are in place that limit the application of fertilizer once a maximum threshold has been met. Grid soil sampling provides a means to monitor soil nutrient levels and ensure fertilizer and manure application meet those standards.