Causal Agent 139 Journal Article 139 Viruses and viroids Subject Areas 125 Crop Type 111 Pathogen detection 92 Vegetables 30 plus ... Fruit 26 Field crops 24 Ornamentals 23 tree fruits 18 herbaceous/flowering plants 16 Epidemiology 15 Etiology 12 Pathogen diversity 10 Disease management 7 Tropical plants 7 disease development and spread 7 other 7 Trees 6 oilseeds and legumes 6 small fruits 5 Techniques 4 pathogen survival 4 RT-PCR 3 Yield loss and economic impacts 3 cereals and grains 3 grapevine 3 ornamentals 3 High-throughput sequencing 2 moins ...