Field peas are a type of legume, specifically a variety of Pisum sativum, commonly grown for animal feed and soil improvement. They are typically harvested when the seeds are dry and can be used in various agricultural practices. Field peas are known for their ability to fix nitrogen in the soil, which helps enhance soil fertility. These peas are also used in human food products, such as soups and snacks, due to their high protein content and nutritional value. They can be found in both whole and split forms, making them versatile for different culinary applications.