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How does a peanut grow?


Groundnut, or peanut, is a member of the legume family. It belongs to those few plants whose fruits grow and grow underground.. It is considered a valuable oilseed, widely used in the food industry.

Description and history of the origin of the peanut

In appearance, peanuts resemble pods from 1 to 6 cm long. The number of yellowish seeds enclosed in them is usually from 1 to 3, the maximum can reach 6 pieces. The seed coat accepts various shades: deep purple, red, pink or variegated.

Peanut Peanut

As a result of pollination of flowers and subsequent fertilization, the lower part of the ovary grows. It forms a gynofor - a shoot that penetrates the wet layers of the soil and forms a fruit. If the flowers are located at a height of more than 20 cm from the ground, then they have no chance of seed formation.

Translated from the Greek peanuts means a spider. The plant owes its name to the similarity of the mesh pattern on the surface of the pod with the cobweb. BUT peanuts are often called peanuts due to fruit ripening.

The historical homeland of the valuable product is South America. It was from there that he began his journey through the world. At the beginning of the 16th century, the Portuguese brought peanut seeds to India, the Macao colony and Japan. In the Philippines and Madagascar walnut came from Spain.

At the end of the 16th century, Portugal founded a colony in Canton. The plant turned out to be in China, where the locals appreciated it. Peanuts helped solve the problem with hunger in the country and was called the Chinese nut.

The next destination was Africa, where it settled down well on practically barren soils. Sown areas for peanuts grew rapidly, and oilseeds were grown for export.

The mass distribution of walnut in the United States began in the XIX century after the Civil War of 1861. On the advice of the American agricultural chemist George Carver, farmers alternated the sowing of peanuts and cotton, which was dying more and more often due to a cotton weevil. Soon, nut yields exceeded cotton income many times and became the main crop in the southern United States.

D. Carver has developed hundreds of varieties of products and products from the plant. Peanuts are part of drinks, dyes, cosmetics, medicines.

Russia was able to appreciate the full benefits of culture at the turn of the XVIII-XIX centuries. The most suitable for climatic conditions for the cultivation of groundnut located in the Caucasus, Central Asian republics, in the southern part of Ukraine, in the North Caucasus.

Calorie and vitamin composition

Peanuts have a high calorie content: 100 g of the product contain 551 kcal. People who are prone to obesity, it is not recommended to get involved in nuts, especially roasted.

Peanut is a high-calorie product

Despite the peanut belonging to the legume family, it is closest to nuts in terms of nutrients and vitamins.

Chemical composition includes:

  • essential nutrients - proteins (26.3 g / 100 g), fats (45.2 g / 100 g), carbohydrates (9.9 g / 100 g);
  • cellulosesugar, starch;
  • vitamin complex (B, C, E, PP);
  • micro and macronutrients - phosphorus, zinc, iron, copper, calcium, magnesium, manganese, potassium, sodium, selenium.

Useful properties and disadvantages

Specialists who studied the properties of peanuts, came to the conclusion that the benefits and harms of the product are about the same. If to consider contraindications to the use and to observe a measure, then unpleasant consequences can be avoided.

The beneficial qualities of groundnut are as follows:

  1. Proteins and fatscontained in peanuts are easily absorbed by the body. Rich vitamin and elemental composition puts the nut on a par with products recommended for healthy eating.
  2. The presence of linoleic acid reduces the risk of developing sclerosis. With sufficient content of this important component in the body, the synthesis of essential fatty acids - linolenic and arachidonic - takes place. They allow you to maintain a normal level of cholesterol in the blood.
  3. Peanut fruit helps to increase blood clotting, which reduces blood loss in injuries and in patients with hemophilia.
  4. Due to the high content of antioxidants, walnut (especially roasted) is a useful prophylactic agent for heart and vascular diseases. Slows down the aging process and cancer cell division.
  5. Natural fiber in peanuts helps to improve digestion, excretion of pathogenic bacteria from the body.
  6. Amino Acid, Part of Peanut tryptophan produces the hormone serotonin in the body. Its high content removes people from depression, restores the nervous system after stress.
  7. Possesses choleretic action.
  8. It is a good helper in fighting infections, boosts immunity.
  9. With the constant use of fruits in small quantities, people noted improvement of hearing, memoryincreased concentration of attention.

Products derived from nuts have almost the same beneficial qualities:

  • peanut butter preserves the complex of essential vitamins and elements;
  • peanut milk has a positive effect on the gastrointestinal tract;
  • peanut paste provides the body with energy.
Peanut butter is a valuable dietary plant product

Nut Harm:

  1. Seed sheath may cause allergic reactionsusually expressed by itching and redness of the skin. In rare cases, vomiting, laryngeal swelling is possible.
  2. For diseases of the joints eating foods high in protein is contraindicated.
  3. If the seed treatment, transportation or storage technology has been violated, a nut can accumulate toxins. Therefore, when purchasing, you must make sure that there is no mold on the shell. Foreign smell is also unacceptable.
  4. People suffering from varicose veins should not eat peanuts because of its ability to make blood thicker.

The famous peanut diet raises many questions. On the one hand, walnut contributes to the rapid breakdown of fats. On the other side of the scale - high calorie product.

The decision to use peanuts for prophylactic purposes or for the treatment of any disease should be made only after consulting a doctor. It is necessary to strictly adhere to the recommendations of experts. Abuse of any product can cause irreparable harm to the body.

Peanut application

The taste of nuts is familiar to everyone. Roasted, salty, sweet, honey-sesame - you can buy them at any store. In a crushed form the peanut is a part of various bakery products, chocolate pastes, halva, creams, coffee drinks.

Most of the crop is recycled for the manufacture of vegetable oil. The highest grade is used in canning and confectionery production. The lower grades of peanut butter are used to make high-quality Marseille soaps.

Nut seed protein is an integral part of various types of glue, plastic. It is used in the production of vegetable wool - ardila.

The botva of the plant is used for cattle feed.

A curious fact - in the US, peanuts are even found in dynamite, in Russia this function is performed by soybeans.

Cultivation technology

To grow a really high-quality product and harvest a rich harvest, you need to follow the recommendations:

Peanut Plantation in Bloom
  1. Preseeding tillage fertilizer allows you to increase the yield by half. Growing peanuts requires good lighting and warm soil. The optimum temperature for germinating seeds is 25-300C. The lower limit at which their germination is still possible is not lower than 140 ° C.
Great importance on the growth of culture has soil moisture, especially during flowering. The main thing is not to overdo it with watering. Stagnant water will adversely affect the yield - rotting of the roots and the appearance of spots on the leaves will lead to the death of the plant.
  1. Landing is best done at the beginning of June.. At this time, the risk of frost on the ground is minimal. Dried seeds and beans are used for sowing. Gardeners recommend choosing large seeds, otherwise you can not wait for germination.
  2. In the hole depth of 7-10 cm (sometimes a little more) put 3-6 pieces of nuts, the distance between crop rows is not less than a meter. On wet soils, sow seeds 3 cm from the surface.

Given that the nut ripens underground, it is difficult to establish the exact date of harvest. On average, it is 3-4 months for early varieties and up to six months for late ones. You can evaluate the degree of their readiness by trying a few pieces to taste.

Gather peanuts in dry weather.. Shrubs should be easily pulled out of the ground. When the soil begins to freeze, most of the crop risks remaining underground.

Then the beans are dried in the sun for several weeks and taken to storage or processing.

Care rules

To get a good harvest you need to take care of the shoots.

  1. To create the necessary moisture peanut watered every 2 weeks. In dry times, this period is reduced by half. 3-4 weeks before harvesting, watering is stopped.
For watering the bushes can not use cold water, especially in hot weather.
  1. After the appearance of inflorescences spend regular hilling of bushes.
  2. Required weeding.
  3. Fertilization at least 3 times during the ripening period. Top dressing can significantly increase the yield, reducing the number of underdeveloped beans.
Industrial Peanut Growing

It is not recommended to grow peanuts in the same area more than 2-3 times in a row to avoid contamination of the culture with pathogenic organisms that remain in the soil and plant residues.


Peanuts are a unique culture. As a representative of legumes, it ripens in the ground like potatoes. It carries many benefits as a preventive and therapeutic agent.. And the wide scope of the walnut in various types of industry makes it a universal product.