|KARTHIKEYAN, GANDHI - Tamil Nadu Agricultural University
|RAYAPATI, NAIDU - Washington State University
Submitted to: Thysanoptera International Conference Proceedings
Publication Type: Abstract Only
Publication Acceptance Date: 3/24/2016
Publication Date: N/A
Technical Abstract: Among the tospoviruses (genus Tospovirus, family Bunyaviridae) reported in India, Peanut bud necrosis virus is by far the most economically significant for tomato production in subsistence agriculture. Management of PBNV has been a challenge for farmers due to the broad host-range of PBNV and its vector, that includes legume and solanaceous crops and non-crop species, overlapping cultivation of different crops that are susceptible to PBNV and perpetuate its vector, and the lack of genetic sources of resistance to PBNV in tomato. To circumvent these practical challenges, we have sought alternative strategies to minimize the field spread of PBNV. Studies on spatio-temporal spread of PBNV suggested that the virus was introduced initially into farmers’ fields via infected transplants obtained from nurseries and secondary spread occurred to neighboring plants within rows. Using this information, transplanting virus-free tomato seedlings and roguing of symptomatic seedlings during and soon after transplanting in the field were recommended to farmers as simple and affordable tactics to reduce virus incidence and avoid crop losses.