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Nghiên cứu sự ký sinh của nấm Trichoderma sp. và Paecilomyces sp. (mật số 1 ˟ 108 bào tử/ml) trên tuyến trùng gây bướu rễ cây tiêu được thực hiện nhằm đánh giá khả năng ký sinh (1) trứng tuyến trùng Meloidogyne sp.; (2) tuyến trùng cái Meloidogyne sp; (3) ảnh hưởng của dịch trích nấm Trichoderma sp. và Paecilomyces sp. đối với tuyến trùng. Kết quả cho thấy Trichoderma sp. ký sinh trứng 89,6% ở 7 ngày sau chủng (NSC) và tuyến trùng cái bị ký sinh 100% ở 2NSC. Paecilomyces sp. ký sinh trứng tuyến trùng 95,7% ở 7NSC và tuyến trùng cái bị ký sinh 96,7% ở 5NSC. | Tạp chí Khoa học Công nghệ Nông nghiệp Việt Nam - Số 1 110 2020 S. L Shu S.Y Lai Yi-Lu Jiang and Jyh-Nong Tsai Mizrahi Y. Nerd A. and Nobel P. S. 1997. Cacti as 2015. Pathogen identification and management of crops. Hort. Rev. 18 291-319. pitaya canker and soft rot in Taiwan. In International Schaffer B. Gaye G.O. 1989. Gas exchange workshop proceedings Improving pitaya production chlorophyll and nitrogen content of mango leaves and marketing 7-9 September 2015 Fengshan as influenced by light environment. HortScience 24 Kaohsiung Taiwan. 507-509. Hieu Nguyen Thanh and Hoa Nguyen Van 2015. Yunus N. 1992. Effect of intensity of training and Management strategies of major pitaya diseases in pruning on growth yield and quality of guava var. Vietnam. Workshop on Improving pitaya production JP 1. ISHS Acta Horticulturae 322 I International and marketing Kaohsiung Taiwan 7-9 Sep 2015. Symposium on Training and Pruning of Fruit Trees. Effect of various degree of pruning on plant growth yield and controlling of canker disease of dragon fruit crop Ngo Thi Kim Thanh Nguyen Ngoc Anh Thu Nguyen Thanh Hieu Abstract Dragon fruit Hylocerus undatus is one of most importance tropical crop in southern part of Vietnam. Mop top concrete post is known as traditional production system which associates to many inherent issues to industry such as old unproductive cladodes and support instability management constraints providing a haven for pests and diseases poor quality fruit etc. The Mop Top plant structure itself presents challenges for orchard hygiene and poorly management is leading to significant pest and disease problems particularly canker disease Neoscytalidium dimidiatum . This newly emerge disease could quickly spread in wet season and heavily infection orchard could reduce plant growth marketable production and highly level of fungicide residue is lead to food safety due to intensive chemicals and in-appropriate applications of chemicals. The result showed that canopy pruning
