Experimental researches of plant protection means

. There was presented and investigated the problem of the application of atomizing tips in the system of processing plants with backpack sprayers in small forms of management and conditions of limited land use. Laboratory researches were conducted using the equipment of the company TeeJetTechnologies, namely for the work on the specified equipment there was designed the dispenser for the selection of atomizing tips of the present design of the sprayer. It will allow you to select atomizing tips for wider use. Also there were designed forms of tables to control the operation of the proposed sprayer based on the processing of one row.

demolition of the working fluid. Drops, which are subject to demolition, have a size of less than 200 microns and easily leave the working area during operation, and can fall into undesirable areas and cause serious consequences for the growth of crops [4].
A number of variables and non-permanent factors is influenced on the demolition of the working fluid at the time of treatment of cultivated plants: size of drop, height of the spraying, wind speed, temperature, humidity and atmospheric pressure. The main means of combating this problem is the use of special tips that are strictly oriented towards the treated surface. These accessories are working actively and allowing to supply the control of introduction mostly on straight sections, however, this factor is not constant throughout the rut and on the distortions we can observe gaps in this design.
The equipment provided by TeeJetTechnologies (the company is a leader in the production of components for accurate measurement, development and application of technology of control systems and data management) was used in laboratory researches. On Fig.1 there were shown the recommendations for the use of the atomizing tips of the same company.
To operate on the specified equipment there was designed and patented the construction of the sprayer to select the atomizing tips for the developed design of the sprayer. It will allow you to choose the atomizing tips for their wider use. Since the use of caps for modern knapsack sprayers is not possible, and the nomenclature range of the tips is currently very extensive, and the working range for their work can provide a knapsack sprayer, especially those structures that operate on autonomous power sources [5].
For convenience, let us set some final parameters: 1. The pressure that can develop a working knapsack sprayer reaches no more than 6 atm.
2. The speed at which the processing is carried out is no more than 7-8 km / h. The choice of atomizing tips is determined according to the recommendations of the company for their working and physical capabilities, and the choice of the tip type is due to the conditions that are most often used in the designs of knapsack sprayers (Figure 2).

Fig. 2. Set of atomizing tips of the company TeeJetTechnologies used in the present research
The main design feature during laboratory researches is the universal case for the atomizing tip. It will make it possible to use not only the tips that come with the sprayer, but also to use more modern and perfect tips and thereby expand the range of use of portable sprayers [6]. The selected atomizing tips in their characteristics constructively and technically fully correspond to the operating pressure, which can provide a knapsack sprayer that has an active pressure discharge drive. In this regard, we were faced with the task to optimize the variety of atomizing tips according to the results of laboratory researches on the installation of TeeJetTechnologies [7].
For laboratory studies there have been developed and constructed a device to simulate the movement of the sprayer in spaces between rows and rows of cultivated crops ( Figure  5). The given device will allow to explore the process of operation of the sprayer at different modes of movement [8].