Herbicide Harnes: instructions for use, mechanism of action and consumption rates

The advantage of soil herbicides is the suppression of weeds at the stage of the embryonic cycle. This creates favorable conditions for the germination of cultivated plants, does not deprive them of useful substances, and allows full use of soil fertility. Harnes is a soil herbicide used to treat and protect soybean, corn and sunflower crops.

Active ingredients, purpose and dosage form of Harnes

The drug belongs to the group of chloroacetanilide, which are soil herbicides with selective action. The active ingredient is acetochlor at a concentration of 900 grams per liter.

Acetochlor effectively eliminates the most widespread types of weeds - cereals and dicotyledonous annuals. Protected plants:

• corn;
• soy;
• sunflower.

The product is available as a concentrated emulsion, bottled in 10 and 20 liter canisters.

Note: The marketing authorization for acetochlor has expired.

How does weed killer work?

The drug is applied to the soil, it is distributed in the surface layer. Its action extends to acetochlor-sensitive plants in the germination stage. The substance is absorbed by the roots and seedlings of weeds. The effect on adult weeds is weak, so the treatment must be done before germination.

Harnes inhibits protein metabolism, due to this, cell division is blocked. The vegetation of the seedlings stops, the weeds freeze in their embryonic state and die.

Obvious signs of the action of Harnes are the absence of germinating weeds, severely deformed, mutilated shoots that dry out as soon as they appear.

Protection period

The impact of Harnes continues for 10-12 weeks. During this time, crops grow stronger, their stems close, do not allow weeds to germinate after the protective effect of the herbicide is completed.

An important condition for the full-fledged work of Harnes is the presence of moisture in the soil, which helps to reveal all the properties of the herbicide.

Impact speed

The drug begins to act immediately, weed seedlings die within 3-7 days, do not appear on the surface or break through damaged and dry on the soil. The effect of the herbicide increases soil moisture, as the substance does not move well in the absence of water.

The effect of the herbicide lasts for 10-12 weeks.

Pros and cons of herbicide

Harnes benefits include:

• long term herbicide action;
• destruction of weeds in the most important period of crop development - at the stage of germination, when young crops are weak, seedlings are still rare;
• does not disrupt crop rotation;
• does not adversely affect the soil;
• eliminates the need for inter-row cultivation, i.e. reduces costs;
• large range of herbicidal action - millet (species), foxtail (species), Rosichka (species), others.

The drug completely decomposes in the soil during the season, it does not fall into the lower layers. Harnes has a hazard class 2 for humans, which requires increased security measures when preparing the solution and spraying the product.

Reference: in high humidity and cold weather, the herbicide can adversely affect protected crops - slow down growth, lead to deformation of shoots.

How to prepare the working mixture

Harnes is bred on concrete grounds, wearing personal protective equipment. Herbicide is poured into a tank filled with water by a third with a constantly running hydraulic mixer. After kneading and complete dissolution, the products are supplemented with water.

Recommended volume of ready solution - 200-300 liters per hectare.

How to properly spray the drug

The herbicide is sprayed on the ground. Instructions for use oblige to adhere to the following rules:

• without incorporation Harness is applied only if the soil is moist;
• time of application - before sowing, along with planting crops, before germination;
• the drug is applied in the amount of 1.5-3 liters per hectare in the volume of the working solution of 200-300 liters;
• with overdried soils, no hope for precipitation, Harnes is covered with harrows or cultivators to a depth of 3-5 centimeters;
• when applying to dry soil, it is recommended to irrigate the fields within 1-3 days after spraying.

Maximum allowable amount of herbicide applied:

• on heavy clay soils;
• if the soil contains a lot of humus (from 3%);
• with a lack of moisture and impossibility of watering.

The herbicide should not be buried in the soil if there is enough moisture in the soil or the fields will be irrigated immediately after sowing.

Using grassland or removing crops from fields is allowed 70 days after herbicide spraying.

Herbicide Safety

Work with herbicide in a protective suit with a mask, goggles. Strictly follow the prescribed dosages. One-time processing of fields by Harnes per season is allowed only by ground means.

The working mixture is used during the day, the remains are disposed of. Exclude contact of substance with products, animals. Carry out protective measures for bees.

Toxic properties

Toxicity - class 2 for humans, class 3 for bees. Within 2-3 months, the herbicide completely decomposes in the soil. No danger to soil microorganisms, worms, insects.

According to some reports, there is a risk of carcinogenicity.

Compatible with other pesticides

It is allowed to use the drug with other pesticides to remove all types of weeds from crops. Prior to pollination, the fields are examined for toxicity.

Harnes is also used in general solution with fertilizers. When spraying mixtures, the hydraulic mixer must be constantly running.

Terms and rules of storage

Harnes has a shelf life of 36 months in unopened factory packaging. For storage, utility rooms for chemicals are used.

Existing analogues

Exact analogues of the drug are herbicides Kratos, Hortus, containing acetochlor in the same dosage.

Since the registration of acetochlor has not been extended, here are Harness's analogues for other substances of the chloroacetanilide group:

• dimethenamid-R - Checkpoint, Difront, Frontier Optima;
• C-metolachlor - Vanguard, Methols, Gardo Gold, Stream;
• metazachlor - Butizan, Butizan Star, Nopasaran, Sultan.

When choosing analogues, the content of the active substance and the activity spectrum of the agent are taken into account.

Soil herbicides protect plants during germination, prevent weeds from pinching young crops and taking away their nutrition. Harnes allows crops to rise, close rows, allows you to get a high yield without harm to the fruit.

Recommended