REPORT ON STATUS OF MAIZE LETHAL NECROSIS ：对玉米致命坏死状况报告.pptVIP

Counties surveyed and disease severity: SEVERE-Narok, Bomet, Nyamira, West Pokot, Nandi MILD- Migori, Siaya, Busia, Kakamega, Kisumu,, Kericho, Naivasha , Elgeyo Marakwet, Baringo. VERY LOW- Trans Nzoia (except West Pokot), Uasin Gishu, Nakuru Over 2000 samples collected Screening of inbreed lines by (KARI, CIMMYT) KARI-CIMMYT team has evaluated over 2,000 maize genotypes in Narok and Naivasha elite inbreed , pre commercial hybrids, elite lines pre-commercial hybrids, commercial hybrids Evaluated lines revealed ca. 5% resistance/moderate Establishing a centralized MLN screening facility at KARI-Naivasha (In progress) Offer an opportunity for screening elite germplasm for KARI, CIMMYT as well as public and private partners in EA Inoculum multiplication (SCMV MCMV) Artificial inoculation Notes taking/ scoring Inoculum Preparation 1.2 ARTIFICIAL INOCULATION PROCESS CIMMYT NARS WORKSHOP –Two workshops Objectives: Raise awareness about MLN to scientist, technicians skilled field staff Train MLN identification Train Scoring MLN MLN management Draft strategies to combat MLN KARI and MoA: Created public awareness on disease and management options to Extension staff, Stakeholders, Farmers via a) Electronic and Mass media b) Technical Publications c) Public Forums d) Field days e) Workshops for Extension Officers in 36 counties Creation of public awareness Conducting tests to verify seed transmission of viruses in local cultivars Host Resistance: Intensify screening of maize germplasm for tolerance/resistance to MLND Initiate MLND tolerance/resistance breeding in maize improvement programs Review cropping practices Introduction of closed maize seasons, Quarantine movement, removal and disposal of infected maize crop, Crop Rotation Schedules Vector management Commend regime of pesticide applications for vector control (seed and foliar) Integrated Pest Management options Genetic resistance, Vector control, Cultural, Good Agricultural Practices