Fatty alcohols

Upon contact with green shoots, the substance causes rapid dehydration and destruction of the cell cuticle. This process leads to tissue necrosis at the point of contact, physically eliminating the growth point without harming the main stem or mature leaves of the crop.

An important feature of fatty alcohols is their strictly contact nature. They do not translocate through the plant's vascular system, which means they only function where the spray droplets directly land on the plant surface.

The effect of these substances is immediate, with visual damage to suckers appearing within 30 to 60 minutes after application. Effectiveness depends entirely on the coverage quality and the uniformity of the spray solution.

This group of substances is also frequently used as a desiccant to prepare crops for harvest by reducing the moisture content of the green mass. Their ability to disrupt cell membranes quickly makes them essential for selective vegetative control.

The primary use of fatty alcohols is for the control of suckers in tobacco and macorka cultivation. These preparations stop the development of secondary shoots that compete for nutrients with the main leaves.

In addition to sucker control, fatty alcohols act as desiccants for various vegetable and field crops. They facilitate the drying of vegetative parts, which simplifies and accelerates the harvesting process.

In pomology, fatty alcohols are sometimes used for fruit thinning. Precise application to young fruitlets allows for the regulation of the fruit load on trees, promoting larger and higher-quality yields.

These substances can also exhibit herbicidal activity against various weeds in their early growth stages. However, due to their contact-only nature, they are rarely used as primary herbicides for established weed infestations.

Using fatty alcohols allows agronomists to effectively manage crop development, directing plant resources exclusively toward forming the marketable yield and improving overall quality.

Application rates for fatty alcohols depend on the growth stage of the suckers and crop density. Usually, solutions with a concentration of 2% to 4% active ingredient are used, depending on the manufacturer's specific recommendations.

High spray volumes are critical for success, with recommendations typically ranging from 300 to 500 liters of solution per hectare to ensure complete coverage of suckers hidden in leaf axils.

The optimal timing for treatment is when suckers reach a length of 2 to 5 centimeters. Applications that are too early may lack efficacy, while those that are too late do not guarantee the complete elimination of developed shoots.

Treatments should be performed in dry weather, preferably during morning or evening hours. Humidity levels should not exceed 80%, as high moisture slows the evaporation of the solution, which reduces the herbicide's effectiveness.

It is important to ensure thorough agitation in the sprayer tank. Due to their unique physical properties, fatty alcohols form an emulsion that requires constant pressure and mixing to maintain uniform distribution.

While fatty alcohols are generally of low toxicity to humans, standard safety precautions must be followed. Personal protective equipment, including respiratory protection, gloves, and eye protection, is mandatory when handling these chemicals.

The primary environmental restriction is temperature. Applications in temperatures exceeding 30°C (86°F) are strictly discouraged, as they may lead to severe burning of the main crop leaves.

These preparations may be incompatible with certain surfactants, which can alter the physical characteristics of the spray solution and decrease its contact efficacy.

Strict adherence to concentration guidelines is essential. Exceeding recommended doses can lead to phytotoxicity, damaging the marketable parts of the crop or causing premature leaf drop.

Storage must be in closed containers in a cool place protected from direct sunlight. Fatty alcohols are sensitive to low temperatures, which can compromise the stability of the emulsion and render the product ineffective.