Assess quality of bioslurry under Biogas Program for the Animal Husbandry sector in Vietnam - Nghiên cứu phân bón

18
May

Cao Ky Son¹, Nguyen Thanh Son², Le Thi Xuan Thu³, Tran Thi My Dzung¹

1. Institute for Soils and Fertilizers, 2. Livestock Production Department, 3.Biogas Project Division in Hanoi

Abstract

Research was conducted at nine households having biogas digesters which constructed strictly following the Project model designs in two communes of Thanh Xuan and Bac Phu, Soc Son district, Hanoi. Cow dung, pig dung and mixture of cow dung and pig dung were used to feed into digesters. Samles of liquid biolurry were taken at two stages: stage 1 and; stage 2 was 45 days after stage 1. The research shows that the dilution ratio of dung and water = 1/ 1-1/ 2 should be applied for diluting animal dung. Liqid bioslury can be  used for watering fertilizer or as foliar fertilizers for all kinds of crop. When used as watering firtilizer, liqid bioslurry from cow dung, pig dung and mixture cow dung and pig dung should be added with water 3,8-4 times (eg. 1 bioslurry and 3 water), 3 times (eg. 1 liqid  bioslurry and 2 water ) and, 3 time (eg.1 liqid of bioslurry and 2 water) respectively.