Cam Pha students create Nano products to help prevent diseases in yellow flower tea

Cam Pha High School (Cam Pha City) has created a nano product to help yellow camellia growers control pathogens caused by bacteria and fungi that are harmful to plants, limiting the use of pesticides.

The group of authors conducted testing of the preparation.

Ba Che yellow flower tea (Quang Ninh) is popular for its delicious flavor and high content of active ingredients in medicinal herbs. With its outstanding advantages, Ba Che yellow flower tea is not only a product with high economic value but also a valuable resource, contributing to promoting local economic development.

Nguyen Trong Hung, a student of class 11A8, Cam Pha High School, the project team leader, said: When we went on field trips and experienced the regions in Ba Che district, we saw that the leaves of the yellow camellia tree had many black spots, curled or yellow leaves. Through research and study, we found that this plant variety is often infected with some diseases caused by fungi and bacteria such as rust, leaf spot, etc. To prevent these diseases, people often use chemical pesticides. If not used properly, it will leave toxic residues on agricultural products, affecting the health of consumers and the environment.

The results of testing the product on yellow camellia plants showed that rust and leaf spot diseases were reduced and completely cured. Photo: Provided by the authors.

Recent studies have shown that nanoparticles such as copper oxide (CuO), silver (Ag), etc. synthesized by green methods using plant extracts have good antibacterial and antifungal properties. This is considered a solution to replace chemical pesticides. In addition, the use of preparations containing silver-doped copper oxide nanoparticles by green methods not only brings economic benefits by reducing production costs but also contributes to environmental protection.

“These nanoparticles can penetrate cells and damage the cell membrane of microorganisms, inhibit the activity of enzymes essential for life, and denature proteins, leading to cell degradation and death. The main ingredient to create this product is papaya leaves. We use dried papaya leaves, extract the solution, and use chemical methods to create a nano-silver copper oxide preparation,” added Hung.

The group of authors, while working in the golden tea growing area in Ba Che, had the initiative to research and create a nano-product to treat harmful bacteria and fungi on tea trees. Photo: Provided by the group of authors.

After evaluating the antibacterial and antifungal activity of the preparation, the research team also tested direct spraying on infected Ba Che yellow camellia trees. The experiment was conducted at the yellow camellia garden of the Sustainable Forestry Cooperative, Nam Son Commune, Ba Che District. The results showed that after 3 days of spraying the preparation, rust and leaf spot on the yellow camellia trees were significantly reduced; after 7 days of spraying, these diseases were completely cured. The yellow camellia trees in the entire garden grew normally. This preparation also had similar effects on other plants.

The results of the project are of great significance in the search for new, low-cost, environmentally friendly materials, opening up prospects for wide application in agriculture , especially in the protection of yellow camellia trees in Ba Che district. This project by students from Cam Pha High School won second prize at the Science and Technology Research Competition for junior high and high school students in Cam Pha City in the 2024-2025 school year.

Nguyen Ngoc

Source: https://baoquangninh.vn/hoc-sinh-cam-pha-che-tao-ra-che-pham-nano-giup-phong-benh-cho-tra-hoa-vang-3357410.html