Fertilizing farmland because Rhizobium leguminosarum bacteria is important in nature’s Nitrogen cycle. Helping plants, trees, fruits, and vegetables flourish. Fertilizing farmland by planting legume and nut plants in crop rotation so that these free-N fixation bacteria stay active. Loosening soil for crops from its chemical and mechanical activity, thus earning Rhizobium leguminosarum bacteria the title of the pioneer bacteria from several farmers. Keeping soil humidity, temperature, drainage, and acidity (pH) stabile and optimum so the next crops will adapt better to their new environment. Causing easy growth for seeds planted on soil after it is used to plant legume and nut plants. Keeping farmland’s soil nutrient intact.