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Introduction
It is a native species to North America and was used by American Indians for an important, high-energy food source. Spanish explorers carried it with them to Europe. Russian agronomists were responsible for the first agricultural hybrids. These returned to the United States with Russian and German immigrants. Sunflower began as an important agronomic crop in the U.S. in the 1950's, starting in North Dakota and Minnesota. Seeds, kernel, what is the difference? The answer, there isn't a difference. Here is how the NSA refers to sunflower seeds/kernel:
Confection/Non-oil Sunflower Characteristics Confection sunflower seeds are normally black with white stripes and approximately five eighths of an inch long. The heavy hull accounts for approximately half the weight of the seed and is loosely fixed to the kernel inside. Seed size is primarily affected by plant genetics, but also to planting density and weather. Sunflower seeds are graded according to size and separated into groups. The largest size will go into the in-shell market. The medium-sized seeds are usually hulled for the kernel market. The smallest size will go into the bird and pet feeding market.
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