Soybeans are susceptible to viruses, non-living packets of genetic code encapsulated within a protein coat. Viruses are unique pathogens in that they grow and reproduce only inside living plant cells, using the plants own molecular machinery to reproduce. Infected soybeans tend to be stunted and produce fewer pods. Foliage may be distorted and have a mottled or mosaic appearance. Seed may also be mottled and deformed. Many symptoms of viral infection in soybeans resemble damage due to common fungal and nematode pathogens, insects, nutrient deficiencies, and even herbicide injury and often go unnoticed in fields. If left unmanaged, severe yield losses can and do occur.