Important in the technological process in the cultivation of corn by industrial technology is the introduction of highly effective low-toxic, rapidly decaying herbicides, which make it possible to destroy weeds on the field without the use of manual labor and to reduce or completely eliminate inter-row treatments during planting.
In weed control, it is necessary to properly use the existing range of herbicides, depending on the degree and nature of debris in each field.
Norms, terms and methods of application of herbicides on maize crops, on the active substance (according to Yu. G, Merezhinsky, I. V. Veselovsky)
Application rate, kg / ha
Ways and terms of application
Annuals, single and dicotyledons
Spraying the soil before sowing, at the same time with it or before the emergence of shoots, termination of cultivators, disc tools or harrows
Annual dicotyledonous and cereal
Tape spraying in a row width of 25-30 cm during sowing or in phase 3 leaves of corn
Amine salt 2,4-D
Spraying vegetative weeds in the fall after harvesting the corn precursor
Annual cereals and dicots
Spraying before sowing with embedding in the soil
Spraying the soil before sowing, at the same time as it or before the emergence of shoots with harrowing
Annual cereals and dicots
Polydim + amino salt 2,4-D
Steppe and ordinary gorchak, thistles and other dicotyledons, resistant to 2,4-D
Spraying vegetative weeds in the fall after harvesting the predecessor
The main (basic) herbicides that are applied to the soil before sowing corn for grain are Eradikan, Agelon, Sutan, Atrazine, Simazin, Linuron, Nitazin and Primexstra, auxiliary (insurance) used during the growing season of corn, - 10 oleopros, 200 and 400, mayazine, dialen, amino salt 2,4-D.
Currently, the most widely used soil herbicide Eradican. Eradican 6E and Eradican 7E contain, respectively, 80 and 82.6% of the active ingredient of eptam and 4-6% of the antidote, a special substance that makes eptam harmless to corn. Eradikan is an emulsion concentrate. The drug is very volatile, has a relatively short duration of action, so that its remnants completely disappear by the time of harvesting corn. Eradikan - anti-tide herbicide. With the correct introduction of annual grasses (bristles of gray and green, common cinnamon), it suppresses almost completely, and dicotyledons (white mar, shchiritsy, mountaineers) - by 55-85%. This herbicide does not work on vegetative root-sprouting perennial weeds (bristle thistle, yellow thistle, field bindweed, creeping gorchak, etc.) and sunflower seedlings.
In fields with a one-year monocotyledonous type of debris, the optimal dose of Eradican is 6-7 l / ha (per preparation) dissolved in 300 l of water. On fields with mixed eradikan contamination, it is advisable to mix in a mixture with atrazine: eradikan 6–7 l / ha + atrazine 1.5 kg / ha (by preparation) when grown after corn, atrazine-sensitive crops. When re-growing corn or atrazine-resistant crops (sorghum, millet), its dose is increased to 4 kg / ha (50% of the drug) or 2.5 kg / ha (80%). The phytotoxic effect of the mixture on weeds is more effective in years with sufficient rainfall. During drought, the effect of the mixture on the weeds is reduced. Therefore, in years with insufficient moisture, crops have to be additionally treated with one of the insurance herbicides.
Atrazine (gezaprim, zeazin, kungazin) - soil herbicide of selective action. Enters the plant through the root system. Non-toxic to corn plants and at the same time destroys most weeds, except perennial dicots. It is a wettable powder containing 50% active ingredient. With water forms a suspension. It is characterized by delayed (1-2 years) decomposition in the soil, so the doses are determined depending on the type and contamination of crops, the physicomechanical properties of the soil, and also the place of corn in the crop rotation. Its effect on weeds largely depends on the soil-climatic zones of corn cultivation and the folding (from 3-5 times in planting to 3-5 leaves in plants) weather conditions. In favorable conditions for moistening on light soils, as well as on soils with low and medium humus content, this herbicide destroys from 85 to 95% of weeds in corn crops. On soils with a high content of humus and when the upper layer of soil dries out, the destructive effect of the herbicide on the weeds is reduced.
When used in a dose of 1.7 kg / ha of the drug (0.85 d.v.) or more, it can have a negative after-effect on sensitive crops sown after corn (winter wheat, sugar beets, sunflower, etc.).
According to the method of application and the action on the weeds close to the Eradican is a sutan. Dose - 5-6 l / ha (for the drug). Contains about 80% of the active substance (a jacket with antidote). Sutan is less effective against rhizomatous weeds than eradican. The soil decomposes quickly, does not show negative aftereffect on the subsequent crop rotation. Relatively low toxicity to humans and animals.
Agelon - combined preparation, contains atrazine (33%) and prometrin (17%). Available in the form of a 50% wettable powder that forms a suspension with water. When introduced under pre-sowing cultivation, one-year-old cereal and two-seedling weeds are destroyed. The optimal dose on the lungs on the mechanical composition of the soil 3-4, on medium and heavy - 5-6 kg / ha (for the drug). The working fluid consumption is 300 l / ha. At a dose of 3-4 kg / ha, it decomposes over one growing season and does not have a negative effect on spring crops and other crops sown after corn the following year. When making an agelon in a dose of 5-6 kg / ha of maize, in this field, crops are re-grown or sown after it are resistant to the crop culture - sorghum, millet, peas, fodder beans, potatoes. The herbicide is embedded in the soil by cultivators with lancet working bodies in an aggregate with harrows or combined implements (Kombi-8.8, BP-8, etc.).
Nitazine - wettable powder containing 70% active ingredient (54.8% of ramrod and 15.2% of atrazine). Suppresses one-year cereals (bristles of gray and green, common cinnamon) and dicotyledonous (mary white, schyrina white and tilted, middle star) weeds. With sufficient moisture, 75–90% of weeds die. The optimal dose of the drug - 6-9 kg / ha, dissolved in 300 liters of water. Apply on all soils, except sandy. Herbicide in soil decomposes in a single growing season. With the introduction of 6 kg / ha does not have a negative effect on crops sown after corn next year. On regular plots, when re-growing corn or resistant crops (sorghum, millet), nitazine can be applied at a dose of 7-9 kg / ha.
Primarkstra - wettable powder or emulsion concentrate, contains 50% active ingredient. Combined medication consisting of metholechlor (daula) - 33% and atrazine - 17%. With sufficient soil moistening, it suppresses annual cereal and dicotyledonous weeds. The optimal dose of the drug - 4-6 kg / ha, dissolved in 300-400 liters of water. When used in the indicated doses in the soil, the herbicide decomposes during one growing season and does not have a negative effect on crops sown after corn (except for sugar beet).
The experience of maize cultivation according to industrial technology shows that the most important condition for high efficiency of all soil herbicides is good soil cuts, the absence of cortextape residues on its surface, and their uniform distribution at a given rate.
Working solutions of herbicides are prepared using APG-12, STK-5 aggregates, BP-3M water distributors, equipped with a hydro-agitator. A sprayer ОВТ-1А with a hydraulic mixer is suitable for this. The amount of the finished solution of the herbicide should be a multiple of the volume of the sprayer tanks. For example, if a POU sprayer with a capacity of 600 liters is used to apply the herbicide, the capacity for preparing the working solution should contain 600, 1200, 1800, 2400, 3000, 3600 l, etc. You can proceed to the preparation of a new batch of solution. will be completely released.
In the preparation of working solutions using only pure water. During the preparation of the solution, as well as during the filling of the sprayer, the mixing device (agitator) should work constantly.
To prepare a mixture of eradican 7E and atrazine, the aggregate is filled 2/3 with water, then the necessary amount of eradican 7E is poured in with active stirring of the solution. Atrazine suspension through the filter is poured into the tank of the unit to prepare the working solution and add the missing amount of water.
Sprayers must be refueled outside the field - on roads or specially designated areas.
For spraying the surface of the field using a boom sprayers POU, OVT-1A, OVT-1B, OPSH-15, "Kertitoks-Goliath-1." Sprayers should be well adjusted in accordance with the application rate of the working solution. It is necessary to constantly maintain pressure in the system that guarantees good atomization - 147–245 kPa (1.5–2.5 atm), depending on the flow rate of the liquid.
An important condition determining the quality and efficiency of chemical treatment is the uniform application of the working fluid of the herbicide to the entire surface of the field without gaps and overlaps. In order to avoid these violations, the unit must be equipped with warning indicators.
Sprayers should have cutoffs that prevent fluid leaks when the unit is forced to stop and cornering, which eliminates the extra costs of the herbicide and the creation of unwanted concentrations in the soil. The speed of the unit should be constant.
It is impossible to cultivate the soil with eradikan when the air temperature is above 24 ° C, as well as in windy weather. Herbicides are applied in the morning when the weather is calm. Since eradican is characterized by high volatility, the drug or its mixture with atrazine is embedded in the soil to a depth of 10–12 cm no later than 15 minutes after the passage of the aggregate. For embedding the herbicide into the soil, heavy disc tools are generally recommended in a unit with tine harrows (BDT-7, BD-10), which are more active than the cultivator's paws, mix the herbicide with the soil and give good results in areas with physically ripe soil and sufficient initial moisture reserves for corn seedlings. At the same time, the use of disc harrows on overwetted soil leads to the formation of large clods of earth, and when drying its upper layer - to delay and inadvertent germination of seeds, thinning of seedlings. Therefore, tools for planting Eradikan and its mixtures in each case, choose depending on the physico-mechanical properties of the soil, the presence of reserves of productive moisture in it, from the time of sowing. Disk tools, intensively drying the topsoil, are used with an adequate supply of moisture in the soil.
All-Union Corn Research Institute recommends the use of such combinations of guns: BDT-7 + Kombi-8,8, BDT-7 + KAPP-8.8, LDG-10 + Kombi-8,8, LDG-10 + KAPP-8,8, LDG-10 + KPS-4, additionally equipped with a leveling board and rollers, a steam cultivator KPS-4 + KAPP-8,8, KPS-4 + USMK-5,4, etc.
What are herbicides
The very concept of "herbicide" means a chemical substance used to destroy plants. Preparations based on herbicides can effectively and in a short time to get rid of unwanted vegetation. According to the principle of exposure to plants, they are divided into drugs of selective (selective) and continuous action.
The latter are capable of killing all types of vegetation. The area of their application is the destruction of unnecessary plantings around and on the territory of industrial facilities: on roads, airfields, under power lines, in ponds, canals. Selective drugs are designed to protect crops from weeds. They are used in the cultivation of corn.
Treatment with herbicides in the people is called "chemical weeding." This is really a good comparison, because after the use of weed remedies, there is not a trace left.
With proper use, they are completely safe for crops, but it often happens that not only weed but also cultivated plants are destroyed. Such an outcome is possible if the herbicide is chosen incorrectly, or an excessive amount of it has been introduced.
It is important to understand that any herbicide is a fairly strong chemical intended for the breeding of resistant weeds. If such a preparation is treated with crops of economic importance, then the probability is high that the plants will stop growing, or the crops will simply die from burns. As for corn, its processing makes sense only if there are a lot of weeds, and other more benign ways of dealing with them cannot be applied. As a rule, this situation occurs when corn is grown on the fields on a very large scale.
A very wide selection of herbicides for corn is now available, and therefore it is quite difficult to choose the best from the entire range. The most common are drugs based on 2,4-D amine salt, clopyralid, sulfonylurea, acetochlor. Each of the active ingredients has its own characteristics of use.
Amine salt is effective with good moisture. In case of drought, this herbicide can partially burn the corn, and also significantly slow down its growth. The principle of the drug is not in the drying of weeds, but in stopping their growth and gradual death. Many business executives are bewildered and disappointed by the fact that even a few days after applying the product, the weeds remain green and unharmed. However, do not think that the herbicide is ineffective, just for the complete destruction of the plantations you need 30-40 days.
Kloperalid is a very highly active herbicide used after germination. Sulfonylureas - systemic drugs of a very wide range of effects with high selective activity against weeds. If you use these tools in tandem, the result can be simply amazing.
The choice of drug depends not only on the active substance, but also on its purpose, the type of weeds and the time of application.
Corn can be processed by the following means:
- Trimmer is a versatile system drug to combat the main annual and perennial dicotyledonous weeds. It is used after sprouting when plants reach 3-5 sheets.
- Quasar is a post-harvest systemic drug against annual and perennial weeds.
- Miranda - a complex preparation in the form of a suspension, intended for the destruction of weeds already in crops.
- Aztec is a soil herbicide used during maize sowing.
- Triton - a drug to combat annual and annual weeds. The principle of action consists in the absorption of the substance by leaves and the rapid movement to the points of growth, which leads to the rapid death of weeds.
- Turbine is a high activity drug against annual cereal weeds. It is used in crops.
This is not the whole list of herbicides. There are also drugs that are introduced into the soil before sowing corn: Merlin, Saga. They are very easy to use, as they eliminate crops from weeds at the right time - at the initial stage of growth. However, the treatment of such means has a significant disadvantage - excessive drying of the soil.
Types of weeds
Corn is a heat-loving crop. Many gardeners grow it from seedlings, and planted in open ground with the onset of warm days.
When corn is cultivated on a large scale, there is no opportunity to grow seedlings, so the grains are sown immediately in the soil at the end of spring. In this case, the first shoots can appear only by mid-June.
Late sowing and slowly developing shoots lead to the fact that corn more than other crops suffer from weeds, which in the spring period have time to grow well.
Weeds, as well as cultural ones, are divided into annuals and perennials, which in turn are divided into monocots and dicots. The annual monocotyledonous weeds that most often attack corn are common bracken, bristles, wild oats, and rosaryka of millet varieties. From dicotyledonous annuals in corn plantings most often grow: blue cornflower, highlander, pea, yellowcone, mar, schiritsa, chistets and many others.
From perennials, corn is often supplanted by the field thistle (sow thistle), bindweed (popularly called birch), dandelion, spurge, wormwood, and ambrosia. In wet soil, horsetail is often found.
Get rid of these plants is very difficult. Even repeated treatment with herbicides does not always allow to remove these weeds, since they are capable of producing new shoots. Еще одна сложность борьбы с сорняками состоит в том, что многие виды произрастают довольно поздно – после того, как посадки были обработаны. Кроме того, большинство сорняков предрасположены к самосеву, поэтому обрабатывать кукурузное поле приходится несколько раз за сезон.
Инструкция по обработке
Поскольку любой гербицид – это очень активное химическое вещество, то его применение должно быть крайне осторожным и правильно дозированным. Before using the drug, you should read the instructions on the package. For each tool there is an exact dosage, method of application and the types of weeds, from which it is effective.
Corn can be processed in two ways: by embedding it in the soil and spraying weeds. In both cases, liquid solutions are used, which are diluted in the concentration recommended by the instructions.
For spraying applied solutions of a stronger concentration, as under the action of wind, rain and other natural factors, the herbicide is partially removed from the weeds. It is noticed that when spraying on the leaves, no more than 30% of the preparation remains. Both methods have their pros and cons. The advantages of spraying include the elimination of soil contamination, and a significant disadvantage is the fact that when spraying weeds die more slowly.
If the herbicide is introduced into the soil, the solution must be carefully distributed over the surface so that it penetrates no lower than the planted grains. Using soil preparations for corn, it is necessary to pay attention to the conditions under which they are active. For example, many of these herbicides do not show their activity in dry soil. If there is no rain, or they are very rare, the probability is high that by the time the soil is moistened, the active components will have disappeared and their introduction will be useless. This also applies to preparations based on 2,4-D amine, dicamba, which are active only in moist soil. In addition, they can be used in strictly defined terms - when sprouts will have 3-5 leaflets.
Practically all the preparations are applied in the morning or in the evening, as a prerequisite for their safe use is the temperature regime not exceeding 25 ° C. At a higher degree, the agents have a toxic effect not only on the corn, but also on the one who was engaged in the processing of plants. Therefore, when working with such substances, you must protect yourself - wear protective clothing, shoes and a respirator.
It is important to understand that the introduction of herbicides into the soil for maize is an irreversible process. The period of their action lasts from 1 to 2 months. At the same time the active substances penetrate into the roots, stems and leaves, which, of course, affects the quality of the crop. Therefore, corn is no longer processed approximately 1–1.5 months before harvest. If maize is planned to be harvested in milk maturity, then the use of drugs is stopped no later than a month before the harvest of young heads.
Video "Protection of corn from weeds"
This video is a simple visual aid for effective protection of maize against contamination using technology based on the drug Mayster.
Basic Corn Growing Rules
Corn for proper growth requires the following conditions:
- temperature 12-25 ° C
- air humidity not less than 30%,
- soil with pH 5.5-7.0,
- light day is not shorter than 12 hours.
For feeding, use different types of potash comfort: potassium chloride, potassium sulfate, potassium salt, potassium nitrate, potassium magnesia, wood ash.
Watering is rare. But the water should penetrate to a depth of 15 cm. Special attention to soil moisture during the period of laying and ripening cobs.
Purpose of herbicides for culture
Great work on the destruction of weeds is carried out before sowing by disking and before the stage of emergence of shoots - by harrowing. When the plants have already gone to growth the best means are herbicides - preparations containing harmful substances to the flora. Herbicide treatment of the fields does not allow the weeds to crush the first shoots of corn. Did you know?Corn gets on well with all crops, except tomatoes. There are two types of such drugs:
- Total action - completely clean the area from vegetation. Used in the primary processing of land.
- Selective action - kill plants of a certain type only.
It is on the basis of the last species that various means are created for cleaning the sown areas of corn.
Important!All herbicides are poisonous preparations. They must be applied very carefully and in personal protective equipment. They must be applied in accordance with the instructions. The destruction of weeds in the later stages of growth by mechanical means is associated with the danger of damaging the root system. Did you know?For successful cultivation, it should be remembered that corn is unable to compete with cereal weeds in the early stages of development. Therefore, the use of herbicides for maize, especially the introduction of ground (pre-emergence) funds is of great importance.
The most effective and powerful drugs:
- "Kratos" - soil herbicide for corn, aimed at the destruction of weeds. Consists of acetochlor emulsion. The active substance enters through the shoots of weeds. Inhibits protein synthesis. Begins to act immediately after making and until the end of the growing season. Treats moderate toxic (ІІІ class),
- "Harnes" - contact selective action, for pre-emergence protection. Well suited to combat all types of weeds. The active ingredient is acetochlor, in the form of an emulsion 900 g / l,
- "Acenit A" - due to the content of the antidote, shows a good result against various types of weeds,
- "Chaser P" - soil preparation against annual dicotyledonous weeds. Recommended for use before germination and after the appearance of 2-3 sheets.
The widest range of drugs refers specifically to post-emergence species:
- "Dialen Super" - post-emergence herbicide for corn, used in the phase of 3-5 sheets. Directed against annual and perennial dicotyledonous plants, including those resistant to other herbicides,
- Titus - means for control of perennial and annual cereal, as well as two-long weeds. It can be used during the long growth phase - from 1 to 7 leaves,
- Meister Power - effective control of all types of weeds, regardless of climate and soil. Effective against the second wave of weeds. Belongs to the second class of hazard (highly toxic).
- "Esteron" - used in the phase of 3-5 leaves of culture. Aimed at combating dicotyledons.
How to use herbicides for corn
The main rule of application of such means is the strict and accurate execution of instructions, the observance of concentration. In this case, the risk of causing harm to health and the environment is minimal. The choice of the drug is also influenced by the type of weeds affecting crops. If spraying is chosen as a method for treating corn, the concentration should be increased - to minimize the effects of rain and wind.
Did you know?As a result of wind and other atmospheric phenomena, about 30% of the active drug remains on plants. If the tool is planned to be applied directly to the soil, the solution is mixed with the top layer of soil.
When spraying, you should carefully consider the condition of the sprayer. Malfunction of the equipment violates the uniformity of treatment and the effect of drugs.
Some active ingredients are sensitive to soil moisture. Therefore, precipitation control becomes an important part of the preparation for tillage. Processing of corn with herbicides is carried out at a temperature not higher than 25 ° C. At a higher temperature, the plants themselves become affected, and the health of workers is threatened. Compliance with the rules of labor protection is extremely necessary when making drugs. Work should be carried out only in special clothes, with the use of respiratory protection and rubber gloves. Be careful when making drugs. Remember that they can be carried by the wind and there is a high risk of poison entering other fields.
Important!The introduction of herbicides is strictly prohibited during the formation of cobs. The deadline for the last treatment is one month before the harvest. These drugs are the most important plant protection products. A large number of various drugs allows you to choose the best tool for your field and conditions. Low toxicity, high efficiency, variety of brands – All this allows the active use of herbicides for high-quality plant protection.
The most acceptable conditions for growing corn
Corn - heat-loving culture. It also develops better and gives a good harvest in sunny and windless areas. Its least troublesome cultivation in the southern territories of Russia - heat and sunlight provided. But with the right approach to the cultivation of this grain crop, good results are achieved even in Siberia. It should be borne in mind that at temperatures below 10 and above 45 degrees Celsius, the development of the plant stops.
Please note! In the absence of specific requirements for the soil, corn, nevertheless, is responsive to fertilized and drained soil. If its acidity is high, it is worth adding lime when digging / plowing.
As for the personal plot, you should pay attention to the neighborhood with other garden crops. For example, beetroot and celery are unwanted neighbors for corn.
Place for future crops need to prepare more in the fall. For what, before the frosts, the plot is dug up, weed roots are carefully selected, the soil is watered abundantly. These actions will help before the onset of cold weather to ascend the seeds that have fallen into the ground, which should be weeded out. If these conditions are alternately met, then in the spring, half a month before sowing, the soil should be slightly loosened and the corn sown.
Being a drought-resistant plant, corn, however, needs good soil moisture during the period of laying and development of male and female inflorescences. Apical panicles are the male organ of the plant, while the female panicles are located in the depressions of the leaves in the germ (root) zone. During the month of the formation and development of the broom, a lack of moisture can lead to drying out of pollen. This leads to poor fertilization and, consequently, to a decrease in yield. It is proved that more than half of the consumption (about 70%) of the necessary nutrition and moisture falls on the first half of the cultivation of the crop.
Herbicide Stellar (stellar)
It is one of the most effective chemical preparations of selective action. It is useful for weed control on the crop itself and as soil protection. With the right dosage, it is able to protect fields 100% of most weeds. Somewhat worse result when dealing with bindweed, chamomile, wheatgrass.
An aqueous solution of the herbicide includes:
- topramezone at a concentration of 50 g / l,
- dicamba at a concentration of 160 g / l.
The first component belongs to the class of benzoylpyrazoles. Topramezon fights selectively with weeds. It inhibits and inhibits the weed's vital processes.
The second active ingredient of the solution is selectively concentrated on the leaves and roots. Getting into the grass sap flow system, Dicamba does not allow its cells to divide, which leads to compression (changes in the structure) of all parts of the plant and to its death.
Important! Herbicide Stellar on corn is used at the beginning of the growing season. Effective for the destruction of annuals and perennials. With an increase in the concentration and consumption of the solution can provide complete protection of crops.
Distinguishing features of the drug:
- one application is enough
- harmless to corn,
- controls the process of the emergence of a new wave of weeds,
- convenient to make
- does not have a harmful effect on the environment.
The effect of the use of the drug Stellar persists throughout the growing season of the culture.
The highest efficiency is achieved at a flow rate of 250 l / ha. The addition of the adhesive (Metolat, DASH), a viscous substance that helps keep the herbicide on the surface of the plant, doubles the effectiveness of the drug.
At the beginning of the development of culture it is difficult to fight weeds, as the latter have stronger roots and are adapted to the growing environment. Therefore, it is recommended to spray the plantations with herbicides before the appearance of the first two leaves. The deadline is fouling with 8 leaves.
Work is carried out in warm, preferably dry and windless weather. Within two weeks after it, irreversible processes take place in the vital activity of weeds. Protection lasts up to 2 months. Soil characteristics do not affect the result. Soil is only a conductor of the drug to the grass root system.
With all the safety of the herbicide Stellar for corn, it can be dangerous for legumes and beets. These crops can be sown only 1.5 years after the last spraying.
Drug storage conditions:
- temperature from -5 to +40,
- dark dry place
- separate from food.
- stored no longer than 5 years.
Herbicide Ballerina: instructions for use on corn
After spraying, within one hour, the herbicide spreads through the sap flow system, covering the whole plant. The purpose of the drug - to stop cell division. On the second day the division process stops completely. Visually, damage can be observed after 4 days. The plant will look pale and withered.
Ballerina (balerina) destroys the weeds of more than one hundred and fifty species, but only one wave! That is, from ascended at the time of the work and before the appearance of new ones. It doesn't matter whether annuals or perennials. The optimal effect of the drug is achieved on young plants (up to 10 cm high). If time is missed, then the Ballerina’s consumption rate will have to be increased with an average consumption of 0.3 l / ha.
Depending on the sizes of the areas of landings the working solution is prepared. The average volume of the solution is 250 l / ha. In case of severe contamination, it can be increased to 300 l / ha. The solution is prepared right before starting work. The required amount of herbicide is injected into the sprayer tank, filled with water in the required volume and with vigorous stirring. Sometimes prepare the mother liquor. This is a 15% emulsion of the drug in water, which is subsequently introduced into the water and mixed. Work on the preparation of funds are carried out in a specially designated place. After their completion, general cleaning of the room and disinfection of dishes is carried out.
The most effective drug at a temperature of 8 to 25 degrees Celsius.
The components of the drug nicosulfuron and thifensulfurol-methyl. The advantage over other herbicides of this range is efficiency, ease of application, safety for the environment and animals. Soluble granules are mixed with the required volume of water shortly before use. For this purpose, a composition is prepared at the rate of 60 g of concentrate per 250 l of water per 1 hectare of a sown area. You can also first prepare the masterbatch, that is, dissolve the right amount of granules in a small amount of water and then add it to the water in the spray tank. At the end of the dilution of the solution is added adhesive.
Important! At all stages of the preparation of the solution requires vigorous stirring! It is recommended to work before sunset or in the morning. In the next three days, it is undesirable to display workers in these fields.
Herbicide begins to inhibit weed vegetation after a few hours, and it will completely die after 3 weeks.
As a result of the use of the chemical, the production of amino acids that are vital for the culture is excluded.
With all the positive qualities of the drug is prohibited to use in the area of lakes and rivers. It is toxic to fish.
All crops can be included in crop rotation. Caution should be taken when sowing other plants with a very dry period between the use of the working solution and sowing or on acidified soil.
The drug can be stored for 2 years after release, in a closed factory container at a temperature of minus 25 to plus 35 degrees, in the reach of outsiders.
The use of herbicide Balet for corn crops is not widely spread. It is mainly used to protect the fields of wheat and barley, as well as the Prima herbicide.
The drug has a wide range of applications. In 24 hours, even dangerous, root-sprouting weeds are harassing. Its action does not depend on the weather. Economical (0.4 liters of concentrate in 300 liters of water per hectare) and cheap preparation (850 rubles / l). It is of little danger to humans and insects. Has no restriction on crop rotation. Herbicide Ballet for maize and other cereals is applied by spraying with a working solution before overgrowing and tillering of weeds.
Herbicide Prima Donna
The drug is used on corn fields immediately after the appearance of weeds, not bringing them to strong germination. The components of the chemical inhibit the production of important amino acids and growth hormone in plant life. Within an hour after application, the results of the action of the agent are visible. Finally weeds die in 2-3 weeks. Moreover, the herbicide is capable of destroying the most difficultly effected varieties of weeds, such as snyti and dandelion.
Unlike other means of weed control, the effectiveness of the Diva does not depend on weather conditions. It can be mixed with various fungicides, insecticides and get protection from harmful insects. The use of funds is not reflected in the rotation.
Рабочий раствор готовится непосредственно перед применением, с соблюдением инструкции по применению на кукурузе гербицида Примадонна. Для этого в бак наливается половина объёма воды, добавляется препарат, доливается остальная вода. В течение всего процесса жидкость постоянно взбалтывается. Расход концентрированного средства составляет 0,6 л на 0,9 га. Объем самого раствора — 250-300 л/га. The best time for work is earlier morning or late evening.
The drug should be stored in a place inaccessible to unauthorized people, at a temperature of from -10 to +35 degrees to 2 years.
Rules for the care of culture (treatment of weeds, chemical polk, fertilizing, etc.)
In the absence of special requirements for the soil, corn, nevertheless, is responsive to fertilized and drained soil. If the acidity of the soil is high, it is worth adding lime when digging / plowing. As a fertilizer, the introduction of a mixture of humus, superphosphate and potassium salt in the proportion of 5 kg / 0.2 kg / 0.1 kg during the autumn and spring plowing is welcomed. Also, 14-20 days before sowing (before loosening), complex nitrogen-phosphorus-potassium fertilizer can be dispersed in a volume of 0.05 kg per square meter.
Worth knowing! In small areas it is quite possible to apply mechanical weeding on plantings. On an industrial scale can not do without chemistry. Because even weekly dominance of weeds can ruin the next harvest. And modern herbicides allow to clear weed fields in a short time.
The impact on unwanted neighbors of the culture is also called the chemical regiment of corn. This is due to the selective effects of the drug. Just as in the manual, the herbicide removes only the shoots of weeds, without harming the crop.
In modern times, choosing the right herbicide is not a problem. Along with the above listed drugs can be noted Priority, Titus. But it must be remembered, their effectiveness depends on the actual situation on the sown field. All the same, this chemistry and without the need to apply it is not worth it. It will be correct to apply herbicides from weeds on corn only if there is a large amount of weeds and in full compliance with the instructions.
- The use of herbicide depends on how it acts. Some are applied before planting, others immediately after sowing the corn or during its growth. You can not use these tools only at the time of the formation and maturation of the cobs.
- The soil should be well treated. In large clods, there are always seeds, small weed roots, if they are not broken up, they will survive by cultivating the field with drugs and germinate. So loosening should be timely and of high quality!
- When using substances of continuous action, it is necessary to remove most of the residues from the previous crop from the field so that they do not cover the ground and allow the substance to penetrate into the soil.
- Norms indicated on the package must be followed. The opinion that a greater amount of money will make it more effective is wrong. If the rule does not comply with the drug can act badly or burn the corn itself, and not just the weeds, even if it is of the selective type.
- Weather conditions can greatly affect the action of the herbicide. Precipitation, strong wind during the processing period are undesirable.