Thua Thien Hue Technical innovation Competition in 2020 – the Second prize
- Field: Agriculture, Forestry, Fishery, Natural Resources and Environment
- Authors: Hoàng Thị Thái Hòa, Tran Thanh Duc, Nguyen Thi Thu Thuy, Nguyen Quang Co,
- Ho Cong Hung, Do Dinh Thuc, Dinh Thi Song Thuy, Le Thi Thuy
- Unit: Agriculture and Forestry University, Hue University
Producing organic fertilizers from livestock waste after biogas compost to create a source of fertilizer and solve environmental pollution which is an important issue today. Therefore, research is carried out with the aim of building the process of processing organic fertilizers mixed with residue and biogas solution after composting; Evaluate the efficiency of using organic fertilizer mixed with residue and biogas solution after composting for leafy vegetables in Thua Thien Hue province. The study was conducted in Huong Van ward, Huong Tra town, Thua Thien Hue province from November 2019 to March 2020. Research results have built a process of producing organic fertilizers from biogas waste, in which the treatment used straw, peanut shell, peat (1: 1: 2) + solution and sediment with biogas composting + Trichoderma have the best organic manure quality. Apply 10 tons of organic fertilizer from biogas waste + 63 kg N + 42 kg P2O5 + 42 kg K2O + 500 kg of lime/ha or only 15 tons of organic fertilizer from biogas waste/ha for lettuce and mustard for high productivity, quality and economic efficiency. Currently, the solution has been ordered by a number of fertilizer companies to purchase products and proposed to be applied. Besides, the proposed research is recognized as a useful solution, as a premise for technical transfer in the future.
Keywords: Biogas, efficiency, organic fertilizer, quality.