Implementing recovery model for ‘sanh’ orange trees in Quang Binh District

BHG - Quang Binh District is a key area for growing ‘sanh’ orange trees in Ha Giang Province. However, in recent years, the cultivation area has significantly decreased due to diseases such as leaf yellowing, root rot, and branch dieback, leading to reduced productivity and yield.

The district has only about 800 hectares of ‘sanh’ orange cultivation, less than half of the area in 2021. To address this issue, farmers are implementing a recovery model for the trees under expert guidance.

The recovery model for ‘sanh’ orange trees by Bui Van Nam in Bang Lang Commune (Quang Binh District).

Since August 2024, the Sub-Department of Quality Management of Agricultural, Forestry, and Fishery Products has collaborated with the Quang Binh District’s Office of Agriculture and Rural Development and CARE Vietnam to support this recovery model.

Farmers in Tan Trinh, Tan Bac, Huong Son, Yen Ha, and Bang Lang communes have been trained in orange cultivation techniques using local resources and guided on making fertilisers, pesticides, and root stimulants.

Three households were selected to participate in the recovery programme, each managing 200 orange trees aged 6–10 years with poor growth and low yields.

The recovery process includes pruning branches, digging 70 cm around the tree base, applying IMO4 preparations, chicken manure, fish protein fertilisers, calcium-boron root stimulants, and fertiliser pearl-humate for irrigation. Pest control measures are implemented before covering the soil to maintain the trees' moisture.

The tested trees are marked with QR codes to monitor care progress.

Field inspections show that the trees are sprouting healthily without pests or diseases. Each tree has produced 5–7 new buds, with well-developed root systems and numerous water-absorbing fibrous roots. The farmers' self-made preparations meet quality standards for fertilising trees.

Experts and orange growers will continue monitoring and evaluating the model's effectiveness in the coming period.

MOC LAN