The Use of Air Induction Nozzles for Application of Fertilizing Preparations Containing Beneficial Microorganisms

Abstract

The work presents the structure and characteristics of field sprayer nozzles, as well as their impact on the survival of beneficial organisms in the selected fertilizing preparations. EŻK and EŻKT nozzles, (EŻK and EŻKT are trade names of single and twin jet air induction nozzles, respectively), that are available on the market have shown low efficiency in the discussed characteristics. Survival of microorganisms under initial conditions at 13.6 × 106 cfu/mL and pressure of 0 MPa, under critical conditions dropped to 1.7 × 106 cfu/mL for EŻK02 and 1.2 × 106 cfu/mL for EŻKT02, in both variants at a pressure of 0.5 MPa. When increasing the flow rate of the components, i.e., the size of the outlet orifices, it was observed that the survival of microorganisms increased by about 11.3% compared to the previously tested component. This resulted from the negative impact of the following: the pressure generated by the application device, number of outlet orifices, and size of an outlet orifice. The results of survival of microorganisms are given in the colony-forming unit (CFU). In addition to providing guidelines useful in the creation of a prototype sprayer intended for use in the application of microbiological preparations, the presented characteristics are a source of information for the end user as regards the proper conditions for the application of these preparations.

Biopolymer-based emulsions for the stabilization of Trichoderma atrobrunneum conidia for biological control

“…This indicates that CNF-based formulations would be challenging to use in existing industrial irrigation equipment. This is also an indication that CNF-based formulations may also not be suitable for foliar treatments, where backpack sprayers are used and are highly sensitive to clogging (Sesan et al 2020 ; Szwedziak et al 2020 ). Conversely, both the CNC and agar-based formulations did not show any signs of clogging/build-up, even down to the smallest filter size tested (115 μm), indicating that these formulations could have applicability for a variety of practical biological control scenarios.…”

Effect of Calcium Foliar Spray Technique on Mechanical Properties of Strawberries

“…To achieve the intended effects of the treatment, scientists must consider the complexity of the application and the need for appropriate technical and technological spraying parameters. They must also use the right nozzles for administering the treatment, considering the properties of the liquid and atmospheric conditions [7][8][9].…”

Average Degree of Coverage and Coverage Unevenness Coefficient as Parameters for Spraying Quality Assessment

“…Efforts have therefore been made to reduce the negative effects for human health and the environment. These activities include the use of air-induction nozzles, the use of decision support tools [1,[6][7][8], and injection into trunk trees of plant protection products [9]. In addition, the use of the latest advanced sprayers equipped with various sensors reduces the risk of hazards [10,11].…”