1 INTRODUCTION PROPERTIES OF THE STUDY To increase productivity and yield, factors such as seeds, fertilizers, cultivation techniques, play an important role, in which fertilizer is considered the main factor However, the long-term use of chemical fertilizers leads to high costs of investment, which results in lower profits for farmers, as well as higher N2O emissions On the other hand, the excess of chemical fertilizers pollutes the soil, water and human health The problem of crop production increases the area of cultivated land is polluted, the fertility and productivity of the land will reduce, causing nutrition degradation Research to find effective farming practices that retain high productivity while improving soil fertility and environmental safety are essential In addition to finding new high yielding cultivars, organic fertilizers are recommended, which can take advantage of all agricultural waste to produce organic fertilizer such as straw, manure, residue Using organic fertilizer to reduce the amount of chemical fertilizer, improving soil fertility Organic fertilizers not only increase crop yields, but also increase the effectiveness of chemical fertilizers, improve soil fertility and productivity Therefore, the research and application of organic fertilizers and biological products in agricultural production to reduce chemical fertilizer, contribute to environmental protection and building a sustainable agriculture This is very necessary and has great significance in agricultural production Thua Thien Hue and central Vietnam as well, the application of organic fertilizers and biological products has not been popularized, even very limited in the context of the climate change towards sustainable agriculture and safe Based on the above issues, the topic of "Research on the effectiveness of using organic fertilizer with Trichoderma and Pseudomonas in groundnut in Thua Thien Hue" was conducted to select the fertilizer formula that can supply good nutrients for soil, plants and contributing in improvement economic efficiency of groundnut production in Thua Thien Hue PURPOSE AND OBJECTIVES ➢ The purpose of the research To determine the effect of organic fertilizer on bio-products to groundnuts, which will be the basis for the elaboration of appropriate technical processes to improve groundnut yields and develop groundnut production following by the bio-sustainable ➢ Objectives of the research Evaluate the using efficiency of organic fertilizer with Trichoderma and Pseudomonas preparations for groundnut in the coastal sandy and infertile soils to improve groundnut production efficiency in Thua Thien Hue province PRACTICAL AND SCIENTIFIC SIGNIFICATION OF THE STUDY ➢ Scientific signification - Providing scientific data on the effectiveness of using organic fertilizer with Trichoderma and Pseudomonas preparations on growth, development, groundnut yield and groundnut production efficiency on coastal sandys and infertile soil - As a reference source, new information as the basis for the use of biological products for groundnut on coastal sandy and dedgraded soil ➢ Practical signification - Contributing in application of organic fertilizers and bio-products useful in sustainable agriculture - The research results of the project will be new scientific advances to base bio-based groundnut production in Thua Thien Hue and other localities SCOPE OF THE STUDY - Research on the effect of organic fertilizer on Trichoderma and Pseudomonas in pots in coastal sandy and gray-on-dedgraded soil at the Faculty of Agronomy, University of Agriculture and Forestry, Hue University The result of the pots experiment to determine the potential formula for growth and yield in oder to develop further research in the field conditions Time conducting of the net house experiment from January to April, 2013 - The research on the effectiveness of using organic fertilizer with Trichoderma and Pseudomonas for groundnut in the field conditions The field experiments are conducted from December 2013 tidual yield (5.56 g/plant), followed by treatment VI (5.10 g/plant) and treatment IV (5.10 g/plant) 5,14 g/plant) The treatment with individual yields similar to control were treatment III (4.77 g/plant), treatmentVII (4.88 g/plant) and control gained 4.78 g/plant Field experiments - Coastal sandy, treatment VI (TP50: 50) achieved the highest yield and economic efficiency in the both cropping seasons Winter-spring cropping seasons, yield grained 27.25 quintals per hectare and economic efficiency grained 46.175.000 VND/ha Summerautumn crop, yield grained 15.95 quintals per hectare and economic efficiency reached 17.925.000 VND/ha Meanwhile, the control grained 22.83 quintals per hectare and 11.54 quintals per hectare, the economic efficiency grained 35,349,000 VND/ha and 7,144,000 VND/ha in cropping season, respectively - Dedgraded soil, treatment V (TP30: 70) grained the highest yield and economic efficiency in the both cropping seasons Winter-spring cropping seasons, yield grained 26.45 quintals/ha and economic efficiency grained 44.175.000 VND/ha Summer-autumn cropping seasons, yields grained 14.39 quintals per hectare and economic efficiency grained 14,025,000 VND/ha Meanwhile, the control grained 20.85 quintals/ha and 10.85 quintals/ha, economic efficiency grained 30,399,000 VND/ha and 5,399,000 VND/ha in cropping seasons, respectively - Using organic fertilizers and bio-products for groundnut in the coastal sandy in Quang Loi and the dedgraded soil in Tu Ha, Thua Thien Hue has improved the soil fertile Increasing organic matter content, total N content and especially potassium exchange Production model The results of models at two locations showed that groundnut growth better, less pest infection, yield and economic efficiency were higher than the control models The model on coastal sandy soil, profit grained 62,900,000VND/ha and cultivated VCRs was 3.87 times The model on the dedgraded soil, profit grained 58,350,000 VND/ha and cultivation VCR was 3.66 times CONCLUSION The study implemented one pot experiment, eight field experiments during fours cropping seasons and developed the best result on the demostration models at the two sites The final result determined the treatment of 02 tons of compost Bokashi + 40 kg N + 60 kg P2O5 + 60 kg K2O + 400 kg lime + Trichoderma and Pseudomonas at 50:50 on the coastal sandy and the treatment of 02 tons of organic fertilizer Bokashi + 40 kg N + 60 kg P 2O5 + 60 kg K2O + 400 kg lime + Trichoderma and Pseudomonas with the ratio 30:70 on the dedgraded soil are the best treatments for groundnut on growth, pest and disease resistance, physiological characters, yield and economic efficiency and some biological and chemical indicators as well as on the coastal sandy and dedgraded soil in Thua Thien Hue TRANG THƠNG TIN VỀ NHỮNG ĐĨNG GĨP MỚI CỦA LUẬN ÁN Tên luận án: “Nghiên cứu hiệu sử dụng phân hữu với chế phẩm Trichoderma Pseudomonas cho lạc Thừa Thiên Huế” Chuyên ngành: Khoa học trồng Mã số: 62 62 01 10 Họ tên nghiên cứu sinh: Trần Văn Tý Khóa đào tạo: 2013- 2016 Người hướng dẫn khoa học: PGS.TS Trần Thị Thu Hà PGS.TS Hoàng Thị Thái Hòa Cơ sở đào tạo: Trường Đại học Nông Lâm, Đại học Huế Những đóng góp luận án - Kết nghiên cứu xác định cơng thức bón phân hữu với chế phẩm Trichoderma Pseudomonas tốt cho lạc loại đất trồng lạc phổ biến Thừa Thiên Huế Đất cát ven biển, công thức VI (02 phân hữu + 40 kg N + 60 kg P2O5 + 60 kg K2O + 400 kg vôi + Trichoderma Pseudomonas với tỷ lệ 50:50) đất xám bạc màu, công thức V (02 phân hữu + 40 kg N + 60 kg P2O5 + 60 kg K2O + 400 kg vôi + Trichoderma Pseudomonas với tỷ lệ 30:70) - Kết nghiên cứu đề tài đánh giá hiệu việc sử dụng phân hữu với chế phẩm sinh học đến việc cải tạo sinh tính tính chất hóa học đất cát ven biển đất xám bạc màu tỉnh Thừa Thiên Huế THE NEW CONTRIBUTION OF THE DISSERTATION Dissertation title: STUDY ON EFFECTIVE USING OF ORGANIC FERTILIZER TRICHODERMA AND PSEUDOMONAS PREPARATIONS FOR GROUNDNUT IN THUA THIEN HUE PROVINCE Major: Crop Science Code: 62 62 01 10 Author name: Tran Van Ty Training duration: 2013- 2016 Supervisors: Assoc Prof Dr Tran Thi Thu Ha Assoc Prof Dr Hoang Thi Thai Hoa Institutions: Hue University of Agriculture and Forestry Contribution of the dissertation - The results of the study determined the best treament of organic fertilizer with the Trichoderma and Pseudomonas preparations for groundnut in two common soils at Thua Thien Hue The coastal sandy, treament VI (02 tons of the organic fertilizer + 40 kg N + 60 kg P2O5 + 60 kg K2O + 400 kg lime + Trichoderma and Pseudomonas at 50:50) and the dedgraded soil, treament V (02 tons of organic fertilizer + 40 kg N + 60 kg P2O5 + 60 kg K2O + 400 kg lime + Trichoderma and Pseudom onas at 30:70) - The results of the study evaluated the effect of using organic fertilizer with bio- preparations in improving the biological and chemical characters of the coastal sandy and dedgraded soil in Thua Thien Hue province ... ÁN Tên luận án: ? ?Nghiên cứu hiệu sử dụng phân hữu với chế phẩm Trichoderma Pseudomonas cho lạc Thừa Thiên Huế? ?? Chuyên ngành: Khoa học trồng Mã số: 62 62 01 10 Họ tên nghiên cứu sinh: Trần Văn... Hòa Cơ sở đào tạo: Trường Đại học Nơng Lâm, Đại học Huế Những đóng góp luận án - Kết nghiên cứu xác định cơng thức bón phân hữu với chế phẩm Trichoderma Pseudomonas tốt cho lạc loại đất trồng lạc. .. + 60 kg P2O5 + 60 kg K2O + 400 kg vôi + Trichoderma Pseudomonas với tỷ lệ 30:70) - Kết nghiên cứu đề tài đánh giá hiệu việc sử dụng phân hữu với chế phẩm sinh học đến việc cải tạo sinh tính