Winter wheat

Last updated
An ear of winter wheat. WheatFlower1.jpg
An ear of winter wheat.
Winter wheat with autumn colors in the eastern United States Young green wheat in Eden Township.jpg
Winter wheat with autumn colors in the eastern United States

Winter wheat (usually Triticum aestivum ) are strains of wheat that are planted in the autumn to germinate and develop into young plants that remain in the vegetative phase during the winter and resume growth in early spring. Classification into spring wheat versus winter wheat is common and traditionally refers to the season during which the crop is grown. For winter wheat, the physiological stage of heading (when the ear first emerges) is delayed until the plant experiences vernalization, a period of 30 to 60 days of cold winter temperatures (0° to 5 °C; 32–41 °F). [1]

Contents

Winter wheat is usually planted from September to November (in the Northern Hemisphere) and harvested in the summer or early autumn of the next year. In some places (e.g. Chile) a winter-wheat crop fully 'completes' in a year's time before harvest. Winter wheat usually yields more than spring wheat.

So-called "facultative" wheat varieties need shorter periods of vernalization time (15–30 days) and temperatures of 3° to 15 °C (37–59 °F). In many areas facultative varieties can be grown either as winter or as a spring, depending on time of sowing.

In countries that experience mild winters, such as in South Asia (India, Pakistan, Nepal, Bangladesh), North Africa, the Middle East and the lower latitudes (e.g. Sonora in Mexico), spring wheat (not requiring a period of vernalization) is also sown in the autumn (November–December) and harvested in late spring (April–May) the next year. This spring wheat planted in the autumn and grown over the winter is sometimes also incorrectly called "winter wheat".

Hard winter wheats have a higher gluten protein content than other wheats. They are used to make flour for yeast breads, or are blended with soft spring wheats to make the all-purpose flour used in a wide variety of baked products. Pure soft wheat is used for specialty or cake flour. Durum, the hardest wheat, is primarily used for making pasta. Almost all durum wheat grown in North America is spring-planted. [2]

Winter wheat is grown throughout Europe and North America, and in Siberia.

Cultivation

Winter wheat is grown as a cash crop or a cover crop. Optimal growing conditions for winter wheat include high-drainage soil with medium texture. Mid-quality soil nutrient content is best for winter wheat, with an appropriate supply of nitrogen being critical for the wheat to be able to establish itself in time before winter dormancy. In addition, a firm seedbed helps protect the wheat over the winter period. [3]

Benefits of growing winter wheat

United States

Winter wheat was brought to Kansas by German-Russian Mennonites in the 19th century. [4] Bernhard Warkentin and Mark A. Carleton played a major part in the spread of winter wheat as a commercial crop. Warkentin organized mills in central Kansas and imported seed from Ukraine to meet growing demand. Carleton worked for the United States Department of Agriculture (USDA) as a crop explorer. He went to Russia to find other wheat varieties and worked with Kansas State University researchers to develop new ones. Winter wheat production quickly spread throughout the Great Plains, and was, as it still is, usually grown using the techniques of dryland farming.[ citation needed ]

Effects of climate change

For temperate climate zones, increases in yields for winter wheat due to climate change are predicted for example in the case of spring wheat in Canada. [5] For Ukraine where temperatures are increasing throughout the year and precipitation is predicted to increase, winter wheat yields could increase by 20-40% in the north and northwestern regions by 2050, as compared to 2010. [6]

Related Research Articles

<span class="mw-page-title-main">Annual plant</span> Plant which completes its life cycle within one growing season and then dies

An annual plant is a plant that completes its life cycle, from germination to the production of seeds, within one growing season, and then dies. The length of growing seasons and period in which they take place vary according to geographical location, and may not correspond to the four traditional seasonal divisions of the year.

<span class="mw-page-title-main">Cereal</span> Grass that has edible grain or fruit

A cereal is any grass cultivated for its edible grain, which is composed of an endosperm, a germ, and a bran. Cereal grain crops are grown in greater quantities and provide more food energy worldwide than any other type of crop and are therefore staple crops. They include rice, wheat, rye, oats, barley, millet, and maize. Edible grains from other plant families, such as buckwheat, quinoa, and chia, are referred to as pseudocereals.

<span class="mw-page-title-main">Wheat</span> Genus of grass cultivated for the grain

Wheat is a grass widely cultivated for its seed, a cereal grain that is a worldwide staple food. The many species of wheat together make up the genus Triticum ; the most widely grown is common wheat. The archaeological record suggests that wheat was first cultivated in the regions of the Fertile Crescent around 9600 BC. Botanically, the wheat kernel is a caryopsis, a type of fruit.

<span class="mw-page-title-main">Rye</span> Species of grain

Rye is a grass grown extensively as a grain, a cover crop and a forage crop. It is a member of the wheat tribe (Triticeae) and is closely related to both wheat and barley. Rye grain is used for flour, bread, beer, crispbread, some whiskeys, some vodkas, and animal fodder. It can also be eaten whole, either as boiled rye berries or by being rolled, similar to rolled oats.

<span class="mw-page-title-main">Vernalization</span> Induction of a plants flowering process

Vernalization is the induction of a plant's flowering process by exposure to the prolonged cold of winter, or by an artificial equivalent. After vernalization, plants have acquired the ability to flower, but they may require additional seasonal cues or weeks of growth before they will actually do so. The term is sometimes used to refer to the need of herbal (non-woody) plants for a period of cold dormancy in order to produce new shoots and leaves, but this usage is discouraged.

<span class="mw-page-title-main">Durum</span> Species of wheat used for food

Durum wheat, also called pasta wheat or macaroni wheat, is a tetraploid species of wheat. It is the second most cultivated species of wheat after common wheat, although it represents only 5% to 8% of global wheat production. It was developed by artificial selection of the domesticated emmer wheat strains formerly grown in Central Europe and the Near East around 7000 BC, which developed a naked, free-threshing form. Like emmer, durum wheat is awned. It is the predominant wheat that grows in the Middle East.

<span class="mw-page-title-main">Dryland farming</span> Non-irrigated farming in areas with little rainfall during the growing season.

Dryland farming and dry farming encompass specific agricultural techniques for the non-irrigated cultivation of crops. Dryland farming is associated with drylands, areas characterized by a cool wet season followed by a warm dry season. They are also associated with arid conditions, areas prone to drought and those having scarce water resources.

<span class="mw-page-title-main">Khorasan wheat</span> Species of grass

Khorasan wheat or Oriental wheat is a tetraploid wheat species. The grain is twice the size of modern-day wheat, and has a rich, nutty flavor.

<span class="mw-page-title-main">Karnal bunt</span> Smut fungus messing up wheat plants

Karnal bunt is a fungal disease of wheat, durum wheat, and triticale. The smut fungus Tilletia indica, a basidiomycete, invades the kernels and obtains nutrients from the endosperm, leaving behind waste products with a disagreeable odor that makes bunted kernels too unpalatable for use in flour or pasta. While Karnal bunt generally does not lead to devastating crop losses, it has the potential to dramatically decrease yield and poses additional economic concerns through quarantines which limit the export of suspected infectious wheat products from certain areas, including the U.S. Several chemical control methods exist for Karnal bunt of wheat, but much work remains to be done in identifying resistant host varieties.

<i>Tilletia caries</i> Species of fungus

Tilletia caries is a basidiomycete that causes common bunt of wheat. The common names of this disease are stinking bunt of wheat and stinking smut of wheat. This pathogen infects wheat, rye, and various other grasses. T. caries is economically and agriculturally important because it reduces both the wheat yield and grain quality.

<span class="mw-page-title-main">Intensive crop farming</span> Modern form of farming

Intensive crop farming is a modern industrialized form of crop farming. Intensive crop farming's methods include innovation in agricultural machinery, farming methods, genetic engineering technology, techniques for achieving economies of scale in production, the creation of new markets for consumption, patent protection of genetic information, and global trade. These methods are widespread in developed nations.

<i>Thinopyrum intermedium</i> Species of flowering plant

Thinopyrum intermedium, known commonly as intermediate wheatgrass, is a sod-forming perennial grass in the Triticeae tribe of Pooideae native to Europe and Western Asia. It is part of a group of plants commonly called wheatgrasses because of the similarity of their seed heads or ears to common wheat. However, wheatgrasses generally are perennial, while wheat is an annual. It has gained the Royal Horticultural Society's Award of Garden Merit as an ornamental.

<span class="mw-page-title-main">Rice production in China</span>

Rice production in China is the amount of rice planted, grown, and harvested for consumption in the mainland of China.

<span class="mw-page-title-main">Rice production in India</span>

Rice production in India is an important part of the national economy.

<i>Eurygaster integriceps</i> Species of true bug

Eurygaster integriceps is a species of shield bug in the family Scutelleridae, commonly known as the sunn pest or corn bug. It is native to much of northern Africa, the Balkans and western and central Asia. It is a major pest of cereal crops especially wheat, barley and oats.

<span class="mw-page-title-main">Farming systems in India</span>

Farming systems in India are strategically utilized, according to the locations where they are most suitable. The farming systems that significantly contribute to the agriculture of India are subsistence farming, organic farming, industrial farming. Regions throughout India differ in types of farming they use; some are based on horticulture, ley farming, agroforestry, and many more. Due to India's geographical location, certain parts experience different climates, thus affecting each region's agricultural productivity differently. India is very dependent on its monsoon cycle for large crop yields. India's agriculture has an extensive background which goes back to at least 9 thousand years. In India, in the alluvial plains of the Indus River in Pakistan, the old cities of Mohenjo-Daro and Harappa experienced an apparent establishment of an organized farming urban culture. That society, known as the Harappan or Indus civilization, flourished until shortly after 4000 BP; it was much more comprehensive than those of Egypt or Babylonia and appeared earlier than analogous societies in northern China. Currently, the country holds the second position in agricultural production in the world. In 2007, agriculture and other industries made up more than 16% of India's GDP. Despite the steady decline in agriculture's contribution to the country's GDP, agriculture is the biggest industry in the country and plays a key role in the socio-economic growth of the country. India is the second-largest producer of wheat, rice, cotton, sugarcane, silk, groundnuts, and dozens more. It is also the second biggest harvester of vegetables and fruit, representing 8.6% and 10.9% of overall production, respectively. The major fruits produced by India are mangoes, papayas, sapota, and bananas. India also has the biggest number of livestock in the world, holding 281 million. In 2008, the country housed the second largest number of cattle in the world with 175 million.

Wheat is produced in almost every state in the United States, and is one of the most grown grains in the country. The type and quantity vary between regions. The US is ranked fourth in production volume of wheat, with almost 50 million tons produced in 2020, behind only China, India and Russia. The US is ranked first in crop export volume; almost 50% of its total wheat production is exported.

<span class="mw-page-title-main">Effects of climate change on agriculture</span> Effects of climate change on agriculture

There are numerous effects of climate change on agriculture, many of which are making it harder for agricultural activities to provide global food security. Rising temperatures and changing weather patterns often result in lower crop yields due to water scarcity caused by drought, heat waves and flooding. These effects of climate change can also increase the currently-rare risk of several regions suffering simultaneous crop failures, which would have significant consequences for the global food supply. Many pests and plant diseases are also expected to either become more prevalent or to spread to new regions. The world's livestock are also expected to be affected by many of the same issues, from greater heat stress to animal feed shortfalls and the spread of parasites and vector-borne diseases.

<span class="mw-page-title-main">Climate change in Kansas</span> Climate change in the US state of Kansas

Climate change in Kansas encompasses the effects of climate change, attributed to man-made increases in atmospheric carbon dioxide, in the U.S. state of Kansas.

This glossary of agriculture is a list of definitions of terms and concepts used in agriculture, its sub-disciplines, and related fields, including horticulture, animal husbandry, agribusiness, and agricultural policy. For other glossaries relevant to agricultural science, see Glossary of biology, Glossary of ecology, Glossary of environmental science, and Glossary of botanical terms.

References

  1. B. C. Curtis, S. Rajaram, H. Gómez Macpherson (eds.). 2002. Bread Wheat: Improvement and Production. Rome: Food and Agriculture Organization of the United Nations.
  2. Oulton, Randall. "Durum Wheat". CooksInfo.com.
  3. 1 2 "Winter Wheat". Sustainable Agriculture Research and Education (SARE).
  4. Federal Writers' Project of the Work Projects Administration for the State of Kansas (1939). Kansas: A Guide To The Sunflower State. New York: The Viking Press. p. 57. ISBN   0403021677.
  5. Qian, Budong; Zhang, Xuebin; Smith, Ward; Grant, Brian; Jing, Qi; Cannon, Alex J; Neilsen, Denise; McConkey, Brian; Li, Guilong; Bonsal, Barrie; Wan, Hui (2019-07-01). "Climate change impacts on Canadian yields of spring wheat, canola and maize for global warming levels of 1.5 °C, 2.0 °C, 2.5 °C and 3.0 °C". Environmental Research Letters. 14 (7): 074005. doi: 10.1088/1748-9326/ab17fb . ISSN   1748-9326. S2CID   159213414.
  6. World Bank. 2021. Ukraine: Building Climate Resilience in Agriculture and Forestry. 151p.https://documents1.worldbank.org/curated/en/893671643276478711/pdf/Ukraine-Building-Climate-Resilience-in-Agriculture-and-Forestry.pdf