Assessment of Fruit Production of Main Tree Species of Kon Chu Rang Nature Reserve, Gia Lai Province, Vietnam

To carry out propagation work on the main tree species in the indigenous forests of Vietnam (Kon Chu Rang nature reserve), the primary tasks were to observe their development and fruiting, determine morphometric indicators, and apply processing methods to identify hidden defects and damage. Taxonomy and morphometric indicators of the main tree species were studied. The effects of sulfuric acid at various concentrations on the fruits of hard-shelled species with prolonged germination periods were studied. The X-ray method was employed to determine whether fruits and seeds were damaged by pests and diseases. The elements contained in the soil samples were determined, and methods for storing and sowing seeds of the trees under study were recommended. Due to the loss of a large amount of forest resources, the monsoon tropical forests of Vietnam require replenishment; the main task of forestry is to study the seed productivity of tree species, which plays a huge role in accelerating the development of nursery farming. Using the scarification method with sulfuric acid, it was established that the species Ormosia balansae, Dialium cochinchinense, and Dipterocarpus kerrii responded positively to a 2 % concentration, and growth differed from other experimental options by 2-3 cm along the length of the seedling.