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

NutriSolutions 360 by WinField United logo
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

Chart of potassium deficiencies in soybeans during growing season

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.