Spring wheat: properties and features of cultivation
Spring wheat is considered a culture of high value, its products are widely used in cooking: bread is baked from it, confectionery products are prepared from it. Wheat is cultivated in most countries of the world, with spring wheat playing a special role - the one that is sown in the spring.
What it is?
Spring wheat has long and firmly settled on the positions of the leader of the agricultural industry in Russia and a number of other countries of the world. Its invaluable advantage lies in its good adaptive ability to any weather conditions. This species belongs to bluegrass herbaceous plant species. In Russia, soft and durum varieties of naked wheat are best known, in India they grow spherical, in Pakistan - two-grain, in Syria - Persian, and in Ethiopia dwarf varieties are popular.
The main characteristics of this type of wheat are the following features.
- The root of the plant consists of individual germinal roots, which in the future form additional shoots from the roots. The roots completely finish their growth and stop development at the flowering stage - at this moment the size of the root system increases to 1.5 meters.
- The stem of the plant resembles straw in appearance, its length is about 100 cm. The inflorescences are represented by spikelets and are divided into segments and a stem. Each ear has several scaly flowers in its structure.
- The grains of the ears of spring varieties look like fruits of very different weights and shades, they are bicarious - they have two seed coats. Outside, there is a special layer that contains a small embryo, which, in turn, contains buds, a shield, a stalk, as well as leaves and a root.
- The spring crop is characterized by increased productivity, however, in order to achieve it, it is necessary to comply with all necessary measures of agricultural technology. Unfavorable atmospheric conditions - drought, prolonged rains, hurricanes, as well as invasions of harmful insects - have a detrimental effect on the fertility of varieties.
- Spring varieties of wheat are characterized by increased demands on the type of soil, the level of heating, the degree of illumination and humidity. The maximum yield can be harvested in regions with the longest daylight hours. If the level of natural insolation is less than 15 hours a day, then the plant begins to lag behind in its development, withers and produces a small crop. Such features of the culture are due to a rather short time of growth and development - no more than 120 days pass from sowing seeds to harvesting grain.
Varieties
The whole variety of spring varieties is conditionally divided into two types: soft and hard, and both groups have fundamental differences. This should be considered in more detail.
hard varieties
A similar culture grows in latitudes with a continental climate, for example, in the Altai Territory, the Orenburg Region, where the summer is hot, dry and relatively short. All varieties of such wheat are sensitive to soil and air drought.
Durum grain is saturated with protein and special gluten.Flour from these cereals is widely used for the manufacture of cereals and pasta products, it is added to bread flour in order to improve the quality of bread. Many varieties of the spring direction have been bred, and each of them is intended for certain atmospheric conditions, types of predecessor in the sowing zone, and individual agricultural technology.
The most common hard spring representatives are the varieties listed below.
- Kharkivska 39 - this variety gives grain with a high degree of vitreousness: in the light such grains seem transparent, and if it is broken, then the place of damage will resemble broken glass. This feature is important for the production of high quality flour and bakery products.
- Orenburgskaya 10 - species classified as mid-season. It is resistant to lack of moisture, lodging and premature shedding.
- Naschadok - another mid-season spring species, which is optimal for conditions of intensive agricultural technology. Tolerates higher amounts of fertilizer without compromising vitreousness, but requires regular watering.
- Bezenchukskaya steppe - a culture with an average ripening time. Wheat is resistant to soil drought, although it does not tolerate atmospheric dryness quite easily.
Soft
Soft spring wheat does not withstand atmospheric drought well, so it can be cultivated only in those areas where good irrigation is guaranteed, regardless of the weather. Such wheat is not demanding on the quality structure of the soil and the level of its fertility, but the grain has much less useful gluten. That is why the flour is more crumbly and refined in comparison with derivatives of hard varieties.
Such flour is widely used for the production of confectionery products and bread, but baking from it quickly becomes stale - which is why a little durum flour is added to it.
The most common types of soft wheat are the following.
- Irgina - a high-yielding and early ripe species, which is traditionally grown in the south of Russia.
- Prioksky - a variety with early maturation, characterized by increased productivity, but does not develop well in conditions of irrigation deficiency. More susceptible to bacterial infections.
- Lada - extremely resistant variety to powdery mildew and other fungal diseases. But it responds unfavorably to a long summer storm with rains. Prone to complete lodging.
- Daria - a variety with high fertility rates, resistant to powdery mildew, but often affected by fungi.
- Dobrynya - a variety resistant to dryness and excessive moisture, the flour of which is distinguished by exceptionally high baking qualities.
cultivation
The technology of growing spring wheat is characterized by complex agricultural technology and requires strict adherence to established rules and a high degree of technological discipline.
Soil and seed preparation
First you need to properly prepare the soil for growing seeds. Work should begin after the harvesting of the previous crop is completed. Soil cultivation has two parts: autumn (it is called autumn) and spring (pre-sowing).
If perennial grasses were the predecessor of spring crops, then in autumn it is necessary to carry out disking of the soil, followed by plowing, while subsurface plowing is allowed.Spring work begins with harrowing - this measure helps prevent excessive evaporation of ground moisture and helps to maximize the warming of the earth. After that, the soil is cultivated to a depth of about 10 cm.
No less attention should be paid to the preparation of seed material. To begin with, they are necessarily disinfected with the help of special disinfectants, most often they use Fundazol or Vitavax. Immediately before planting, the seeds are heated, for this they are kept in an open area in a well-lit place for about 4 days. If the weather conditions are not favorable for natural heating, they resort to using a dryer with an active ventilation mode for 3-4 hours at a temperature of 40-60 degrees.
Some farms spray seeds with superphosphate powder - this method of treatment significantly increases the germination of seeds from 16 to 25%.
Seeding methods
The planting of spring varieties of wheat is based on the principle of crop rotation - the place of this crop is after perennial tilled plants. It is not recommended to plant wheat after sunflower - in this case, the crops will be heavily clogged. You should not plant it after winter crops - a similar cultivation method contributes to the accumulation of bacterial microflora in the ground. Spring trees need nutrient soil with an average level of acidity and a finely dispersed structure.
A place for crops is formed with the help of special equipment - a cultivator in combination with harrows. All this allows you to well smooth out the area intended for sowing. If the arable land is treated in accordance with basic agrotechnical principles, then there is no need for pre-sowing plowing, and seedlings are easily planted to the required depth.The sowing bed has a size of 4 to 6 cm, in arid latitudes the material is buried by 7-8 cm, although germination is significantly reduced.
Normally, 4-6 million grains are planted per 1 hectare of sown area; under favorable natural and agrotechnical conditions, the volume of seed is reduced to 2-3 million grains. Together with the seeds, granular superphosphate is introduced into the ground. All sowing works on the field are carried out by equipment that compacts the soil minimally.
Care
Spring wheat requires high-quality and technological care, the correctness of which largely determines the yield of crops.
The main component of agrotechnical measures is the fight against unnecessary weeds, since they can significantly reduce the level of yield. The maximum effect is achieved if the work is carried out taking into account the type and characteristics of weeds, their number and climatic parameters of the region. Most often, herbicides "Hurricane" and "Roundup" are used - these are compounds of general action. As for wheatgrass and dioecious plants, the Attribute drug is more effective here. It is necessary to timely process plantings from attacks of field pests, most often, the compositions "Decis" and "Sumi-alpha" are used for this.
It is important to adhere to competent irrigation technique. The regime directly depends on the weather characteristics of the area in which spring wheat is sown.
The plant responds well to fertilizers, most often I use nitrogen-containing compounds with phosphorus-potassium supplements. The volumes of the required compositions directly depend on the characteristics of the terrain, the structure of the soil and the predecessors of the spring crop.
The most popular in the cultivation of spring crops are such effective preparations as ammonium and calcium nitrate, as well as azophoska and nitrophoska.
If we take average indicators, then 40 kg of nitrogen, 22 kg of potassium and 10 kg of phosphorus are needed for 1 ton of grain and 1 ton of straw. In addition, organic top dressings - compost, manure or rotted litter, which must be applied at the stage of autumn site preparation, have good efficiency. In the same period, it is recommended to treat the land with ammonia water or anhydrous ammonia.
Development phases
Spring crops have several phases of their life cycle.
- seedlings - the appearance of sprouts begins with the formation of 4-5 roots, after which a bud and a small shoot immediately appear, covered with coleoptile. This coating protects the sprouts from integrity violations and other external negative factors.
- tillering - when a young plant has 3 full-fledged leaves, the growth of the stem stops, thin shoots and various nodal roots form.
- Exit to the handset - after the rudiments of the root system are fully formed, the active growth of the stem begins, at this stage the lower internodes lengthen. The importance of this stage lies in the fact that those internodes that are on top become stronger, and the plant becomes more resistant to lodging.
- balayage - otherwise it is called earing. In time, it coincides with the appearance of the sixth internode. The period between stemming and heading is extremely important, because it is at this moment that the ear is formed.
- Flowering and ripening - come to replace earing. This cycle occurs in three stages: appearance, filling and final maturation.The duration of seed formation is short - about a week, after which the filling stage begins, which is accompanied by a decrease in seed moisture content to 12%.
Pests and diseases
The basic preventive measures for the control of varietal pests are:
- preliminary impregnation of seeds with protective solutions;
- early rise of plowing with additional processing of the soil with flat cutters and dumps;
- compliance with the principles of crop rotation;
- treatment with strong planting preparations;
- preventive foliar top dressing (carbamide, metaphos, chlorophos from a proportion of 20 kg per 30 liters of water).
Spring wheat often encounters Fusarium and Septoria. Title and Rex Duo compositions are highly effective in the treatment of such infections.
Harvesting
The grain is best harvested one week after the grain has reached full maturity. If you delay harvesting, then most of the grains can crumble, which will significantly reduce the yield.
In most cases, spring wheat is harvested by a separate method, in which special self-propelled headers completely mow the straw stalk, after which they are rolled up and left for a couple of days to dry completely. After some time, each roll is subjected to threshing - this method is optimal when the plant has high stems and a significant density of crops.
At the end of the grain collection, it is placed in specially equipped elevators, and the arable land is subjected to special plowing up to a depth of 13 cm.
For information on how to carry out pre-sowing treatment of spring wheat seeds, see the following video.