tailieunhanh - Hiệu quả của biện pháp nuôi cấy mô và xử lý hom giống trong phòng trừ bệnh trắng lá mía do Phytoplasma

Bài viết trình bày đánh giá hiệu quả phòng trừ bệnh trắng lá mía do Phytoplasma bằng biện pháp nuôi cấy mô và xử lý hom giống được thực hiện từ tháng 01 đến tháng 12 năm 2019 tại Viện Nghiên cứu Mía đường. | Tạp chí Khoa học và Công nghệ Nông nghiệp Việt Nam - Số 12 121 2020 Study on emergence development and integrated management of rice gall midge damage in the Mekong delta Vu Quynh Nguyen Thi Thanh Thuy Do Tan Trung Pham Thi Kim Vang Tran Loc Thuy Tran Thi Mong Quyen Tran Thi Be Hong Nguyen Thi Vang Nguyen Thi Thuy Le Quoc Cuong Nguyen Thi Phong Lan Pham Hong Hien Abstract The study on emergence development and integrated management of rice gall midge damage in the Mekong delta was carried out to examine occurrence and damage of AGM in regional rice paddy fields during period of 2018 - 2020. The results indicated that AGM appearance was linked closely with high RH degree and dry-wet alternative conditions the typical weather of dry cropping season in Mekong delta MK . Biological and ecological characteristics of AGM were investigated including life cycle alternative hosts and relative natural enemies. Moreover pest forecast using light traps and color-pan traps was also applied in order to explore AGM incident in paddy fields leading to proper pest management strategy. Screening tests of common rice varieties in MK were not found AGM resistant ant rice variety some rice varieties including OM9582 OM3673 OM11735 and OM10424 found to be promising and showed potentials of AGM resistance. Application of ecological engineering by planting flowers and mungbeans on rice bunds and use of mycoinsecticide 3M product containing three fungi species Metarhizium flavoviride M. anisopliae và M. minus 1 1 109 spores g developed by Plant protection department CLRRI were carried out as alternative methods instead of using chemical insecticides by farmer habit for environmental-friendly pest control on AGM damage by supporting natural enemy community performance in rice field ecosystem. Lastly field trials were deployed in experimental sites of Can Tho Kien Giang and Dong Thap in two consecutive cropping seasons Autumn Winter 2019 and Winter Spring 2019 - 2010 in total of over 20 .