**The suspension concentrate (SC)**


**195**

*thuringiensis* [85].

*Toxic Potential of Bacillus thuringiensis: An Overview DOI: http://dx.doi.org/10.5772/intechopen.85756*

• Dispersions of solid active ingredients in a nonaqueous liquid intended for

• Oil dispersion provides several important characteristics, such as the ability to supply water-sensitive active ingredients and the ability to use an adjuvant fluid

• Stable suspension of microencapsulated active ingredient in an aqueous continu-

• The bioagent as an active ingredient is encapsulated in capsules (coating) made

• Protected from extreme environmental conditions (UV radiation, rain, tempera-

• The most frequently applied encapsulation method uses the principle of interfa-

The extension of pesticide formulations containing Bt will depend essentially on our capacity to improve the performance of the products used [83]. Therefore, biotechnology companies have the task of providing not only formulations adapted to certain crops and insect pests, but also, they must look for and produce bioinsecticides based on the new high-potency strains originating from the agroecosystems where they are going to apply. It is expected that the new products that appear in the market will provide a spectrum of higher activity that will impact on a greater number of pests in other crops and can help develop sustainable agriculture [80].

Worldwide, the use of biopesticides increases 16% annually, which represents approximately 8% of the pesticide trade in the world [12]. The formulations derived from natural materials such as bacteria, animals, plants, or minerals offer a powerful tool to create a new generation of sustainable products [84]. About 90% of microbial biopesticides are derived from a single entomopathogenic species *Bacillus* 

*Bt*-based bioinsecticides are classified into first-line products up to the fourth generation: (1) They are made up of spores and crystals, have several drawbacks, since they present a narrow range of activity when more than one pest insect is present, have little persistence in the field to solar radiation, and do not reach insects that attack roots or internal parts of the plant. (2) They contain spores and toxins of strains as an active ingredient with the introduction of genes from other

• The nonaqueous liquid is more often an oil (vegetable oil).

instead of water that can increase and extend pest control.

• Intended for dilution with water before use.

of gelatin, starch, cellulose, and other polymers.

• Residual stability increases due to slow (controlled) release.

**Oil dispersions (OD)**

dilution before use.

**Capsule suspension (CS)**

ous phase.

ture, etc.).

cial polymerization.

**8. Bioinsecticides based on** *Bt*

