The Right Plant Nutrition

Soil and tissue sampling are the most reliable ways to determine a soybean crop’s nutrient needs. By monitoring nutrient levels through regular sampling, deficiencies can be accurately identified and supplemented to achieve optimal yield potential. Fertilizing for soybeans can provide a significant boost to yield potential.

Comprehensive Approach to Plant Nutrition

The NutriSolutions 360® system evaluates and monitors plant nutrient status through a combination of soil testing and tissue sampling, before visual deficiencies appear. There are limitations in both soil testing and tissue sampling; the use of either one exclusively will not answer critical crop nutrition issues. Soil tests provide a good indication of which nutrients may be limiting, but cannot measure actual nutrient availability over time. Likewise, a single tissue sample taken at only one growth stage usually creates more questions than answers. Using soil tests and tissue samples together provides a complete picture of a plant’s nutritional status from top to bottom.

Potassium Deficiencies Present Yield Limiting Threat

Nearly 1,592 soybean plant tissue samples were collected and analyzed with NutriSolutions® analysis in the South Region throughout the 2014 growing season.

  • Results shown in Chart 1 indicate 19 percent of fields were either responsive or deficient in potassium.
  • During the critical reproductive stage, NutriSolutions® analysis of approximately 553 soybean tissue samples showed 81 percent of sampled fields had either responsive or deficient potassium levels (Chart 2).
  • Left uncorrected, these potassium deficiencies can prevent soybean crops from reaching their optimal yield potential. To maximize the response to foliar micronutrients, a potassium deficiency needs to be corrected first.