At present, the entire province of Lao Cai has 53,300 hectares of pure cinnamon, which is concentrated in Bao Thang, Bao Yen, Van Ban and Bac Ha districts. The cultivation of cinnamon brings a high economic value, so the area is expanding. Recently, a number of pests and diseases have started to cause severe damage that affects the growth of cinnamon.

According to the Bao Thang District People’s Committee, there is now a phenomenon that cinnamon trees dry out between the leaves and between the leaves (a new disease has a light green streak along the leaf veins, and then burns dry between the leaves), causing widespread damage to many caused communities Phu Nhuan, Son Ha, Xuan Giao and Tang Loong – Bao Thang district. The specialized agency of the Lao Cai Ministry of Agriculture and Rural Development examined and took samples for analysis to determine the fungal cause of the disease.

At the same time, it is recommended that communities instruct forest owners to clean and remove diseased branches and leaves from cinnamon gardens to destroy and limit the spread. For cinnamon forests that are not registered for organic cinnamon production, it is possible to combine test spraying on a narrow area with fungicides such as Anvil 5SC or Tiltsuper 500EC to ensure an isolation period of at least 15 days after spraying the newly harvested, harvested branches and leaves.

In addition, powdery mildew appears and causes damage to cinnamon trees scattered in some communes of Bao Yen, Bao Thang, Bac Ha, Van Ban districts… It is forecast that late February to mid-March 2023 will be the peak pests and diseases that harm cinnamon trees, such as leaf tips, powdery mildew; Caterpillars, thrips, beetles…

In order to actively prevent and minimize damage from pests and diseases to cinnamon trees, the Ministry of Agriculture and Rural Development of Lao Cai Province has just sent out an urgent document to request the county and city people’s committees to guide the departments. The technical committees coordinate with the people’s committees of townships, districts and townships to urgently inspect cinnamon forests, demarcate areas infested with pests and diseases, and direct forest owners to take pest care and prevention measures. Prepare statistics and report on the situation of cinnamon pests and diseases to the Ministry of Agriculture and Rural Development to take immediate measures to control directly and effectively.

Direct the municipal people’s committees and grass-roots agricultural advisers to strengthen information, propaganda and training to guide forest owners to identify and proactively apply technical measures to prevent and control cinnamon pests and diseases (giving priority to the use of cinnamon becomes). and biological drugs) as follows:

– Cultivation measures: planting at the right density, not planting too densely, proper thinning to ensure the right density for the cinnamon forest, clearing of vegetation, balanced fertilization to create favorable conditions for the growth and development of forest trees, increased resistance against pests and diseases.

For the area of ​​​​the trees that have been planted for a long time to the age of exploitation and can be harvested, they are harvested to clean the vegetation and plant a new replacement. It is recommended that cinnamon forests be planted with other forest trees according to bands to limit drought risk, preventing pests from emerging and spreading damage on a large scale.

– Manual measures: dig around the base to kill pupae and larvae in the soil, use traps to kill young caterpillars when they are newly hatched and still congregating in one spot on the leaves, or catch adults Bugs when pretending to be dead (This is a very effective and safe measure, but it is necessary to spread it widely in the community and mobilize the entire population to apply it in order to achieve high efficiency). It is possible to use light traps to catch adults by lighting them at night from 7 to 10 p.m. in areas with harmful insects, adults (he) will fly to, catch them with a bat and destroy them.

– Biological measures: the use of biological products such as Bacillus thuringiensis, Beauveria bassiana, Metarhium anisopliae from fungi or suitable bacteria prevents both insecticidal and long-lasting action in the forest, while protecting parasitic natural enemies and being non-toxic. and does not pollute the environment.

– Use of pesticides: Should only be used when there is a high density of pests and diseases. Some medications can be used, such as:

+ For powdery mildew: Bacillus amyloliquefaciens (Bacillus subtilis) QST 13 (Serenade SC); Ketomium 1.5 x 106 cfu/g powder; Daconil 500EC; Dipcy 750WP…

+ For dry leaves: B Cure 1.75WP; Curenox oc 85WP, BM Bordeaux M 25WP, Ridomil Gold® 68WG, Anvil 5SC…

+ For Beetles: Vimatox 1.9EC, 5SG; Ometar 1.2 x 109 spores/g; Dibamec 5 WG, Limater 7.5 EC…

+ For depth measurement: Vimatox 5SG, Dylan 5WG, Kuraba WP, 3.6EC; Tasieu 1.9EC, 5WG…

+ For thrips: Shertin 5.0EC; Silsau 6.5EC, 10HP; Vibamec 5.55EC; Vetsemex 40EC, 135WG

Note:

– For organic cinnamon growing areas: only agricultural, artisanal and organic methods are used. In no case do not use chemical drugs, only organic pesticides and herbs that are allowed to be used in organic production. It is necessary to design and arrange buffer zones to isolate them from mass production areas according to the prescribed distance.

– For cinnamon growing areas not registered for organic certification: Priority is given to agricultural, artisanal and organic methods. When spraying, care should be taken to place a warning sign in the newly sprayed area to ensure human and animal safety and ensure the isolation time after spraying as required. The isolation time depends on the type of drug, at least 15 days after spraying to utilize and collect twigs and leaves.