How to grow rhubarb?
The petioles of rhubarb contains on average 95% of water, 0.5-1% nitrogen, 0.5 to 1% sugar, 3 to 8% dry matter, 1,5-3% nitrogen-free substances, 3-5% oxalic acid, 1-2% malic acid and about 10 mg% of vitamin C, informs Rus.Media.
Rhubarb is known in medicine as a laxative and cholagogue, drugs which are widely used in the treatment of gastrointestinal diseases. The food used in the petioles, of which, prepare compote, jelly, jam, kvass, wine.
Rhubarb belongs to the family Polygonaceae. It is a perennial plant with a strong rhizome, which goes back into the soil, and lots of dormant buds, which resumes the growth of leaves and floral shoots. Propagate rhubarb by dividing these kidneys. Adult 4-6-year-old rhizomes have 5-6 branches. Each of them is 6-7 buds, have rudimentary stems with flowers in its infancy. At the base of the rhizome are young buds – the growth (vegetative).
Kidney reproductive organs begin to develop when regrowth of plants, forming a flower stalk and seeds. From vegetative buds remains dormant. Each one repeats approximately the development cycle: 12-year – vegetative growth 2nd or 3rd seed formation and death.
Leaves on long petioles, lush, green, pink or red, collected in the outlet. Leaf blade is solid, with a wavy edge, oval or triangular in shape, reaching a size of 70 by 80 inches, especially in wet years. In the second year, 40-50 days after the beginning of regrowth of leaves, flower stalks appear. They reach a height of 2-2,5 meters high, hollow, has a long meusli. The stems are sessile, relatively large leaves.
The stems end with a inflorescence in panicle. The flowers are small, white, their fragrance attracts many insects. Seeds brown, triangular shape, with krilatko. With the appearance of a flower stem education new leaf is suspended, and during maturation of seeds rosette leaves gradually dying out, and only after the cutting of the shoots begins secondary growth of leaves. With timely vilamovian stems the growth of the rosette of leaves is observed over the summer that allows you to lengthen the time of gathering the stalks of rhubarb from the garden plot.
Rhubarb – the plant is cold-hardy in severe winters with little snow don’t freeze solid, begins to grow immediately after snow melting. Young buds tolerate frosts to 2-6 degrees cold. The growth and development of rhubarb is observed at a temperature of from 2 to 18 degrees Celsius. At a higher temperature 25-27 degrees, the plants grow and develop very quickly.
The lack of moisture inhibited the growth of stalks, they quickly stiffen and have an unpleasant taste. In wet and cool years, the rhubarb gives a juicy and fleshy petioles for 20-30 days longer vegetation period.
Rhubarb is not demanding to light, it can be placed in shaded areas, in the aisles of the orchard, near fences, buildings. The soil should be light, fertile, for the development of a strong hive requires a large amount of nutrients.
Rhubarb is well propagated by dividing the rhizomes. It is divided into several parts, multiple visible buds on the rhizome. This reproduction is most often practiced in gardens, in backyards, and especially if new varieties. This method allows you to carefully select the plants with landespolizei; the colour of the petioles, vitamins.
For vegetative propagation of the crop stalks in the first year of planting is the same as for 2-3-year-old plantations during the multiplication of seeds. Note that the Central Bud of the Bush give flower shoots in the first year, and a side – on 2-3rd year after planting. This pattern should be considered when choosing planting material, selecting highly productive Bush with late flowering.
Good results can give the July summer sowing, which it is devoted usually to rainy weather. By the end of the growing season formed well-developed rosette of leaves with sufficient nutrient that promotes better overwintering plants. The following year, as a rule, the rhubarb is ready for harvest already by may 20-30. So, spring planting gives the products already in the year of sowing to autumn, and the summer sowing until the spring of next year. Therefore, it is acceptable both ways in our environment.
Seedling method, which is recommended as the primary method of seed reproduction, has no advantage over non seedlings, as it requires a lot of work in growing seedlings, transplanting, and watering plants.
With the onset of the flowering phase the growth of new leaves stops and not cut the stalks stiffen. After seed maturation in mid-July, begins the secondary growth of leaves, allowing for a harvest of petioles. Thus, gardeners can make two cut – spring and summer – to harvest rhubarb.
In the spring the plant contains from 40 to 60 mg% of vitamin C per 100 grams of product. This means that to satisfy the daily human need for vitamin C is enough for one or two cuttings. During budding, the vitamin C content significantly reduced, and the autumn, when re-growth, rises again.
Rhubarb can grow in one place for 10-12 years, but 5-6 years of age, the leaves and petioles are small, malacolite. Prior to this period it makes sense to lay a new bed of rhubarb.
Agrotechnics of cultivation of rhubarb is simple. It is early spring digging between the rows with the application of compost, peat with the addition of mineral fertilizers. During the summer, spend two or three times the loosening of the soil. While cut flower stems. The irrigation area increases product quality and lengthens the period of flow of the harvest. When cutting cuttings should be left one third of the leaf, so as not to weaken the plant. Cut the stalks without processing can be stored refrigerated for 5-6 days.