Soybean FAQ

Soil Fertility Management

Animal Waste and Soil Fertility

General Information

Science Fairs

Soil Permeability

Soil Permeability

Soil pH Level

How can it be that a plot to which lime is applied in spring has got a lower pH than that to which nitrogen is applied?
How do you explain unexpected change in soil pH across different fields with lime being used to lower the pH in fields where it was high and with little being done to the fields that had a relatively low pH?
How does the cation exchange of a soil contribute to fertility?
Is there a correlation between soil acidity and nitrogen content of the soil ?
The ph level of soil in our fields is 7.3 and high in lime preventing clover growth. How can we reduce the level of lime in order to get much better pasture for the animals?
What are the ideal pH conditions for production of Soya beans in arid climates under irrigation?
What effects does gypsum have on soil?
Why is pH important?

Soybean Fertilizer

Soybean, Copper and Zinc

Are the crop soils in US zinc deficient?
Is it likely that enough copper will leach off and into the soil to cause my veggetables to become toxic-to humans, or to animals?
What is the acceptable form to add zinc in furrow starter fertilizer?
Where can I find information concerning the phytotoxicity of zinc and copper with respect to soybean production?

This information is provided by:
Robert G. Hoeft, Ph.D.
For more information about Dr. Hoeft, see the Soil Fertility Management Soybean Answers page.