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The pearlescent powder used for seed coating can make the seed appearance bright and insect resistant. In recent years, more and more seed customers buy pearlescent powder for seed dyes.

A smooth and firm membrane was formed on the surface of the seeds added with pearlescent powder （agricultural dye）. With the germination, germination, emergence and growth of seeds, the effective components in the coating are gradually absorbed by the plant roots and transmitted to all parts of the seedlings, so that the seeds and seedlings play a role in controlling seed borne bacteria, soil borne bacteria and underground and aboveground pests. The micro fertilizer in the film can give full play to its effect before the base fertilizer can borrow. Therefore, the coated seeds grow vigorously at seedling stage, the leaves are dark green, the roots are developed and the plants are robust, so as to achieve the purpose of increasing production and income.

Product introduction

Yortay Gold Series effect pigment is a gold lustrous powder that is composed of Mica, Titanium Dioxide, and Iron Oxides. A wide array of gold shades are obtained by its varied particle sizes and its iron oxide to titanium dioxide ratio. It’s useful for a wide variety of things where a golden lustre or sparkle effect is desired.From sparkle shining luster to matte effect, you can see following pigment photo.

Definition of Seed Treatment

In agricultre and horticulture, seed treatment or seed dressing is a chemical, typically antimicrobial or fungicidal, with which seeds are treated (or "dressed") prior to planting. Less frequently, insecticides are added. Seed treatments can be an environmentally more friendly way of using pesticides as the amounts used can be very small. It comprises priming, coating, pelleting, phytosanitary treatment, and microbial inoculation.

The Process of Seed Treatment 

The text above mentioned that there are three ways of seed treatment, but pearl pigment powder is mainly used in the second way seed coating.

Seed coating: A special adhesive is used with a formula of pearlescent powder to enhance seed adhesion.Coatings need advanced processing technology, by the industry's praise.

The first thing to prepare is the slurry of mixed with pearl pigment powder, seeds, water and pelleting powder.The production process is as follows:

Step1: Put seeds and start to run the coater

Step2: Spray a little water

Step3: Add pelleting powder by slowly

Step4: Inject the slurry mixed with pearl pigment powder

Step5: Increase speed of rotary disk

Step6: Do step3 and step4 above 10-15min

Step7: Add finishing powder and check coating seed size

Advantages of Seed Treatment

1. Seeds treated with pearl powder can inhibit, control, or repel plant pathogens, insects, or other pests that attack seeds, seedlings, or plants.

2.Seed treated with pearl powder is aim to reduce inoculum levels and disease development from seedborne fungi that are present on or within seeds, without affecting the viability and emergence capacity of seed.

3.It is usual to add colour pearl pigment to make treated seed less attractive to birds if spilt and easier to see and clean up in the case of an accidental spillage.

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