Classes of Wheat
The agricultural areas of the United States differ dramatically in
topography, soils and climate. Because of these differences, the United
States produces a wide variety of crops, each suited to its own locale.
Wheat is a typical example. Wheat is grown in most of the 50 states of
the United States. The kind of wheat grown and the quantity vary widely
from one region to another. Thus, an importer or domestic miller can be
readily assured of obtaining the type of wheat they need by selecting
the proper class.
Plant breeding lies at the heart of assuring continued improvements in the production and quality of U.S. wheat. Wheat improvement work had its formal beginning in 1897 when the U.S. Department of Agriculture set up an active program of wheat research and development. Today, the variety development program is carried out by experiment stations maintained by a number of states as part of their agricultural college and university systems. The experiment stations are the primary source of new wheat varieties and help to maintain the uniformity within a wheat class. Plant scientists at these federal and state stations are guided not only by the need of farmers for high-yielding wheats that resist drought and disease, but also by the quality requirements of millers and bakers at home and abroad.
Six Basic Classes
The many varieties of winter and spring wheat are grouped into six official classes. The class a variety fits into is determined by its hardness, the color of its kernels and by its planting time. Each class of wheat has its own relatively uniform characteristics related to milling, baking or other food use.
Hard Red Winter (HRW) is an important bread wheat which accounts for almost forty percent of the U.S. wheat crop and wheat exports. This fall-seeded wheat is produced in the Great Plains, which extend from the Mississippi River west to the Rocky Mountains and from the Dakotas and Montana south to Texas. Significant quantities are also produced in California. HRW has a moderately high protein content, usually averaging 11-12%, and good milling and baking characteristics. There are no subclasses of this class.
Hard Red Spring (HRS), another important bread wheat, maintains the highest protein content, usually 13-14%, in addition to good milling and baking characteristics. This spring-seeded wheat is primarily grown in the north central United States--North Dakota, South Dakota, Minnesota and Montana. HRS comprises just over twenty percent of U.S. wheat exports. Subclasses based upon the dark, hard and vitreous kernel content (DHV), include
dark northern spring, northern spring and red spring.
Hard White (HW) is the newest class of wheat to be grown in the United States. It is used for noodles, yeast breads and flat breads and is grown in California, Idaho, Kansas and Montana. There are no subclasses. Currently, HW is used primarily in domestic markets with limited quantities being exported. It is anticipated that exports of this class will increase.
Soft White (SW) is a preferred wheat for flat breads, cakes, pastries, crackers and noodles and is grown primarily in the Pacific Northwest. Soft white is a low protein wheat, usually about 10%. SW represents just over twenty percent of total U.S. exports, primarily to Asia and the Middle East. Subclasses are soft white, white club and western white.
Soft Red Winter (SRW) is grown in the eastern third of the United States. SRW is a high yielding wheat, but relatively low in protein, usually about 10%. SRW is used for cakes, pastries, flat breads, crackers and snack foods. This fall-seeded wheat comprises about fourteen percent of U.S. wheat exports. There are no subclasses of this class.
Durum, the hardest of all U.S. wheats, provides semolina for spaghetti, macaroni and other pasta products. This spring-seeded wheat is grown primarily in the same northern areas as hard red spring, while smaller winter-sown quantities are grown in Arizona and California. Durum comprises nearly five percent of total U.S. wheat exports. Subclasses are hard amber durum, amber durum and durum.
Plant breeding lies at the heart of assuring continued improvements in the production and quality of U.S. wheat. Wheat improvement work had its formal beginning in 1897 when the U.S. Department of Agriculture set up an active program of wheat research and development. Today, the variety development program is carried out by experiment stations maintained by a number of states as part of their agricultural college and university systems. The experiment stations are the primary source of new wheat varieties and help to maintain the uniformity within a wheat class. Plant scientists at these federal and state stations are guided not only by the need of farmers for high-yielding wheats that resist drought and disease, but also by the quality requirements of millers and bakers at home and abroad.
Six Basic Classes
The many varieties of winter and spring wheat are grouped into six official classes. The class a variety fits into is determined by its hardness, the color of its kernels and by its planting time. Each class of wheat has its own relatively uniform characteristics related to milling, baking or other food use.
Hard Red Winter (HRW) is an important bread wheat which accounts for almost forty percent of the U.S. wheat crop and wheat exports. This fall-seeded wheat is produced in the Great Plains, which extend from the Mississippi River west to the Rocky Mountains and from the Dakotas and Montana south to Texas. Significant quantities are also produced in California. HRW has a moderately high protein content, usually averaging 11-12%, and good milling and baking characteristics. There are no subclasses of this class.
Hard Red Spring (HRS), another important bread wheat, maintains the highest protein content, usually 13-14%, in addition to good milling and baking characteristics. This spring-seeded wheat is primarily grown in the north central United States--North Dakota, South Dakota, Minnesota and Montana. HRS comprises just over twenty percent of U.S. wheat exports. Subclasses based upon the dark, hard and vitreous kernel content (DHV), include
dark northern spring, northern spring and red spring.
Hard White (HW) is the newest class of wheat to be grown in the United States. It is used for noodles, yeast breads and flat breads and is grown in California, Idaho, Kansas and Montana. There are no subclasses. Currently, HW is used primarily in domestic markets with limited quantities being exported. It is anticipated that exports of this class will increase.
Soft White (SW) is a preferred wheat for flat breads, cakes, pastries, crackers and noodles and is grown primarily in the Pacific Northwest. Soft white is a low protein wheat, usually about 10%. SW represents just over twenty percent of total U.S. exports, primarily to Asia and the Middle East. Subclasses are soft white, white club and western white.
Soft Red Winter (SRW) is grown in the eastern third of the United States. SRW is a high yielding wheat, but relatively low in protein, usually about 10%. SRW is used for cakes, pastries, flat breads, crackers and snack foods. This fall-seeded wheat comprises about fourteen percent of U.S. wheat exports. There are no subclasses of this class.
Durum, the hardest of all U.S. wheats, provides semolina for spaghetti, macaroni and other pasta products. This spring-seeded wheat is grown primarily in the same northern areas as hard red spring, while smaller winter-sown quantities are grown in Arizona and California. Durum comprises nearly five percent of total U.S. wheat exports. Subclasses are hard amber durum, amber durum and durum.
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