To study about the majority of viruses infecting plants are spread by insects, and aphids are the most common group of virus vectors or carriers. All potyviruses (the largest group of plant viruses) are transmitted by aphids and management of non-persistent viruses Plants cannot be cured once infected by a virus. Instead, disease management aims to prevent or delay the infection of plants and minimize economic losses. Although no single method is likely to provide adequate control, integrating several management options will often provide effective control. First method is excluding or avoids the virus; Plant virus-free seed and healthy seedling transplants, cuttings and tubers. This is a key management tool as infected seeds, transplants or tubers introduce viruses at a very early stage of crop growth and provide a source of virus that can be further spread by aphids. Second method is a Reduce virus levels i) Control weeds and other hosts of viruses and aphids around crops, headlands and farm buildings etc. ii) Destroy old crops promptly, as these often have a high level of viral infection and are an important source of infection for new crops. Third method is a protect the crop i) Plant virus-resistant or virus-tolerant varieties. These are available for some virus/host combinations (e.g. the three potyviruses infecting zucchini and pumpkin, and potato virus Y in capsicum). ii) Use highly reflective mulches and oil sprays to deter aphids from landing and feeding, and interfere with probing/feeding patterns. Straw mulch on the soil surface also deters landings. These methods delay virus infection rather than totally prevent it. Reflective and straw mulches become ineffective once plant growth covers most of the mulch. Oil sprays need to be applied at least weekly with good coverage of leaf surfaces, including young, recently unfolded leaves. iii) Use tall barrier crops, windbreaks and bare land to reduce the numbers of aphids entering the crop. Integrated management methods that reduce or eliminate insecticide use are encouraged. Cultural and biological control methods are outlined in the fact sheet.