TRIAL CULTIVATION RESULTS OF NEW PEAR VARIETY “VH6” IN BAC KAN PROVINCE

Abstract

Bac Kan province has a favorable natural condition for the development of some temperate fruit trees such as pear in highland areas. However, pear production is still small scale and mainly used local pear variety, so the quality is limited. The project of trial planting pear variety “VH6” at typical locations of 3 highland districts: Ba Be, Ngan Son, Pac Nam, Bac Kan province, with altitudes of 540 - 740 m above sea level, was implemented from June 2017. Preliminary results show that VH6 pear variety was well adapted to local conditions. Although planting in the Summer (June 2027) in unfavorable weather, but after 3 and 4 years of planting, the trees had grown quite well, with few pests and diseases, and began to produce the first fruit season after the 3 year planting. After 4 years planted, fruits were harvested from the mid.- end of July at the rate of 32.4% fruiting trees, each tree bear: 22.3 fruits, fruit weight: 260.9 g/fruit, yield: 6.0 kg fruit/tree. Fruit performed good quality: Spherical slightly flattened shape, green color skin; High edible rate: 90.95%. The flesh of the fruit was white with little or no darkening after peeling and opening the fruit; The fruit was succulent, soft flesh, sweet and cool, without acrid taste. Dry matter ratio: 17.78%; Sweetness (brix degree): 12.00%; vitamin C content: 10.23 mg/100g tannin content: 0.17% and acidity with acid content 0.22%. This result shows that pear variety “VH6” is a high potential to develop and expand production in Bac Kan province.