Heze Peony Disease Investigation And Control Technology Research

Heze peony cultivation is the largest area of germplasm and ornamental resources in China. Heze is also the base of peony in medical and industrialization and research. Heze peony with their own unique fashion in the asexual propagation, sexual breeding, farther process, flowering and peony-season development has been made economic efficiency and social benefits. However, with the development of peony cultivation, the diseases of peony have increasing year by year. As the spread of peony disease caused large peony plants growing frail and matched recession, paeonol low output, poor quality, serious waste of financial resources was caused. Peony cultivation is urgently needed to solve the problems.The research reports in peony disease are very rare, and only the general research and investigation. A systematic study on peony disease has been carried out in pathogen, symptoms, epiphytology, etiology and disease control in our research.Through 3 years investigation and study, peony disease and their distribution in Heze was clear. Systemic study on three main diseases (red spots, root rots and root-knot nematode )was carried out. The fungus Cladosporium paeoniae was identified as the causal agent of peony red spots disease, Fusarium solani was identified as the causal agent of peony root rots disease, and Meloidogyne hapla was pathogen of root knot nematode. The biological characteristics of these pathogen, the raletionship between the occurrence of disease and environmental cause for example soil, cultivation, varieties, and other aspects were also studied.It was found that 70% thiophanate-methy, 50% Carbendazim and several fungicide were beseem to control the rod spots disease of peony. The effects were more than 90% and these fungicide had a good effect on peony root rot control. Study also found that 10 % anti-nematode granules, 5% Yishubao etc. could used to control, root-knot nematodes. The effects has more than 80%. The bacterial strains were also selected to control the diseases. From the control practice, the disease index of this three disease were been limited about 5. This were the foundation for the development of Heze Peony.