Soybean plants have bacteria living within nodules in their root systems while corn plants do not. Which plant would help farmers improve soil conditions and why?

the plant that will help farmers improve soil conditions is the soybean plants.

Explanation:

In Plant nutrition, plants can make glucose and other carbohydrates from carbondioxide and water. In addition, they require mineral salts for the formation of proteins and healthy growth. These mineral salts cannot be made by plants. Example of essential minerals that are required by plants include: NITROGEN, phosphorus, potassium, sulphur, calcium iron and magnesium.

Nitrogen is an essential mineral needed for the synthesis of amino acids, proteins, nitrogenous bases and chlorophyll. And it's deficiency can lead to extremely stunted growth with very small yellow leaves.

Some plants (LEGUMES) are able to make use of nitrogen gas in the soil. This is possible because symbiotic bacteria like the Rhizobium which are found in the root nodules of leguminous plants use gaseous nitrogen to manufacture amino- compounds and proteins which they share with the host plant.

SOYBEANS is a typical example of a leguminous plant, therefore the plant will help farmers improve soil condition for farming.