Studying some Technical Measures to Improve the Yield and Quality of Van Ban Pear Variety in Lao Cai Province

The Van Ban pear is a fruittreethat brings high economic efficiency to local peoplein Lao Cai province which was at risk of eroding precious genetic resources due to the traditional farming practices of mountain people. Aims to effectively exploit and sustainably develop this pear variety, 3 experiments were conducted, including (1) Study on the effects of fertilization treatmentson growth, yield and quality of Van Ban pear variety; (2) Study on pruning combined with pulling branches techniques on growth, yield and quality of Van Ban pear variety; (3) Study on the effects of some soil moisture retention measures on growth, yield and quality of Van Ban pear variety. Research results indicatedthat applying 1,200 kg/ha of Viet Nhat synthetic NPK fertilizer (15 : 15 : 15 + TE) gavea high fruiting rate (4.47%); large fruit (353.1 g/fruit), high yield (213.9 kg/tree. Pruning branches three times a year combined with pulling branches once increasedfruit setting rate, number of fruits/tree, productivity, fruit setting rate (4.73%), fruit size (349.9 g/fruit) andthe actual yield reached190.3 kg/tree.The most optimal treatment to retain moisture was plant matter’s addition to the soil, combined with applying AMS-1 moisturizing agent at an amount of 0.1kg/tree. Fertilizing and moisturizing as above had enhancd fruit quality (increased dry matter content, total sugar, brix and vitamin C content) of Van Ban pear variety.