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In this article, learn about the main types of spray mixture preparation and the specific equipment needed to ensure a homogeneous mix.

Achieving high productivity in the field depends on a variety of factors. Among them, we have proper spraying with agricultural pesticides that protect crops against pests and diseases. In addition, it’s important to combine the use of these products with technologies that ensure correct spray mixture preparation, avoiding application errors and reducing waste. In this article, Rotoplastyc presents the main types of spray mixtures, along with the correct order of product addition and the specific equipment required to achieve a homogeneous solution, which ensures good coverage and positively impacts grain quality and overall productivity.

Types of Spray Mixture Preparation

Pesticide formulations can come in solid or liquid form. It’s important to follow the recommended sequence of product addition and, based on the specific needs of the crop, choose the best spray preparation system. Options include:
● Incorporators: components that come pre-installed on sprayers to assist in the spray mixture preparation process. The use of this system has declined due to the operational advantages offered by pre-mix and ready-mixture systems;
● Pre-Mixers: in this system, products are diluted in water. Most units include a spray nozzle and internal water injection into the containers, in order to perform triple rinsing and the immediate pumping into the sprayer tank. It is recommended to have some type of spray mixture agitation system. In this process, close attention must be paid to the amount of water used, as preparing with low volumes can saturate the system and compromise solubility;
● Ready-to-Use and Concentrated Mixtures: the mixture is prepared in a designated location, separate from the sprayer, and must be kept under constant agitation before being transferred to the sprayer tank. The main advantage of this process is the reduction in time spent moving the sprayer for refilling. It also offers better control, safety, and ease of operation in the field.

The Correct Order of Product Addition in Mixture Preparation

Proper spray mixture preparation requires knowledge of the specific sequence in which each product should be added, and must consider their formulation type, viscosity, and solubility. According to a publication on the Plantio Direto website, there is a recommended sequence for mixing products in the sprayer tank or spray mixture mixer, which helps identify product incompatibility during the process:
a) Adjust the water pH;
b) Turn on the agitation system;
c) Add surfactant and emulsifying adjuvants;
d) Add substances that are highly soluble in water;
e) Add solid formulation products (WP and WG);
f) Add liquid concentrates;
g) Add fertilizers, micronutrients, and other adjuvants;
h) Add oil-based products.

To achieve the best results, it’s essential to use specific equipment that ensures a homogeneous spray mixture. In addition to speeding up the process, such equipment helps reduce waste due to preparation errors, contamination, and product incompatibility. Rotoplastyc specializes in equipment for various types of ready-to-use spray mixture preparation, offering both the Pre-Mixer line and the Speed Mix line, equipment designed for preparing ready-to-use mixtures for sprayer filling, as well as the Comander, which allows the preparation of ready-to-use mixtures, pre-mixtures, and concentrated mixtures, featuring dual agitation and other unique advantages. Learn more about our spray mixture preparation solutions at https://rotoplastyc.com.br/rp/