DD298623A5 - METHOD FOR THE REQUIREMENT OF THE RENDERING OF LIQUID AGROCHEMICALS BY AIRCRAFT - Google Patents

Abstract

The invention relates to a method for the demand-based application of liquid agrochemicals with aircraft in agriculture and forestry for the control of pests and Wekraern, for Duengung and biological Prozeszsteuerung with variably designed agrochemicals in the broth to increase the impact safety, reducing the environmental impact and reducing the Residuals on the harvested products. The variable amount of agrochemicals to be applied is determined as a function of the broth's evaporation conditions, the technical and technological operational parameters of the aircraft and the meteorological conditions before the start of work. The process does not affect the biological effect and leads to a reduction in the amount of agrochemicals used. {Agrochemicals; spreading; variable application rate; Rueckstandsverminderung; Environmental Protection; Application rate reduction}

Description

Field of application of the invention

The present invention relates to a method for the demand-oriented application of agrochemicals in agriculture and forestry with aircraft for controlling pathogens and weeds, for fertilization and for biological process control.

Characteristic of the known technical solutions

Process engineering solutions are known in which agrochemicals mixed with water or oil are applied as a solution, emulsion or suspension by aircraft. Furthermore, it is known that the agrochemicals special substances, such as wetting agents, evaporation inhibitors or adhesives can be added to change the physical properties of the liquids, with the aim to increase the effect or to reduce the drift. An essential part of the known solutions is that the content of active substance is kept constant, regardless of the use of additives and regardless of the prevailing during the application of meteorological and technological conditions. This leads depending on the complex effect of all factors influencing the deposition of agrochemicals on the target areas to an uncontrollable deposition amount that can lead in extreme cases to Mir.derwirkungen or health-endangering residues in crop or food products.

Object of the invention The invention aims to provide a method for the demand-based application of agrochemicals by aircraft

develop.

Another object of the invention is to make the auszubringende Agrochemicalsanteil in the broth variable, characterized

to increase the safety of the environment, to reduce the environmental impact of agrochemicals and to avoid excessive residues of

Avoid agrochemicals in r uejo food products. Explanation of the essence of the invention

The object of the invention is to develop a process for the demand-based application of liquid agrochemicals with aircraft in agriculture and forestry for controlling pathogens and weeds, for fertilization and biological process control.

According to the invention the object is achieved in that before and during the Ausbringvorganges the auszubringende amount of agrochemical depending on the evaporation properties of the liquid and the addition of evaporation inhibitors, the nature and the use parameters and the meteorological conditions of the ground air layers is calculated and metered so that on The amount of agrochemicals deposited in the target areas is kept almost constant.

The required deposition rate of the agrochemicals is determined by the target function of the application of agrochemicals and determined before the start of work. By this method, surprisingly, the amount of agrochemicals used can be substantially reduced and the environment can be protected, without the biological effect being adversely affected.

AusfOhrungsbelsplel

In the following an inventive method is shown.

Before the application of agrochemicals, a parameter catalog of the influencing factors is compiled. With the aid of a QS algorithm, these parameters are used to calculate the amount of Agrochemicals deposited on the target surfaces and evaluated using a factor that characterizes the unevenness of the distribution. This calculated value is compared with a process-specific SoIIw Tt of the necessary quantity of agrochemicals. The result of the comparison determines the quantity of agrochemicals to be delivered.

Claims (6)

1. A method for demand-based application of liquid agrochemicals by aircraft, characterized in that the amount of agrochemicals contained in the liquid is made variable so that the amount on the target surfaces to the effect amount is kept almost constant that the agrochemical portion contained in the liquid depending on the evaporation characteristics of the liquid, the type and operational parameters of the aircraft, the technological operational characteristics and the meteorological conditions of the near-surface air layers shall be determined by calculation. 2. The method according to claim 1, characterized in that the evaporation properties of the liquids depending on the carrier substance water or oil and in the vehicle water on the type and amount of additives are described. 3. The method according to claim 1, characterized in that the deployment parameters are described by the altitude and airspeed. 4. The method according to claim 1, characterized in that the technological application parameters by the droplet spectroscopic and distinguish spraying and characterized the Brüheaufwandmenge is determined. 5. The method according to claim 1, characterized in that the meteorological conditions of the ground level air layers are described by the psychrometric temperature difference, the wind speed, the wind direction with respect to the direction of flight and the degree of turbulence of the atmosphere. 6. The method according to claim 1 to 6, characterized in that the agrochemical component contained in the liquid is additionally determined depending on the uniformity of the distribution on the target surfaces.