State any two ways in which combination beans and maize planted together could improve maize yield
1. Nitrogen fixation: Beans are nitrogen-fixing plants, which means they can convert atmospheric nitrogen into a form that can be used by plants. By planting beans alongside maize, the beans can improve the nitrogen levels in the soil, which is an essential nutrient for maize growth.
2. Weed suppression: Beans have a dense canopy that can help suppress weeds, which can compete with maize for nutrients, water, and sunlight. By planting beans together with maize, the beans can help reduce weed growth, allowing the maize to flourish without as much competition.