Plant-parasitic nematodes (PPN) pose a hidden threat to vegetable production, with root-knot nematodes being among the most damaging soil-borne pests. These nematodes affect a wide range of crops and have caused significant yield reductions in Indiana, impacting both large-scale conventional vegetable production and small-scale diversified farms, particularly in high tunnel production. Despite their potential to[Read More…]
Nematode Management
Root-knot nematode (RKN, Meloidogyne spp.) is a major problem in cucurbits such as watermelon, cantaloupe, cucumber, pumpkin, and squash. The reason RKN is problematic lies in their ability to persist for long periods in the soil and their wide host range, which includes more than 2,000 plant species, including crops and weeds. RKN infestations are[Read More…]
We announced in a previous newsletter article that we are doing a survey to understand the extent of root-knot nematode (RKN) damage on vegetable crops in Indiana. Among the 18 soil samples from high tunnels of 14 farms, RKNs (juvenile or adult) were found in 13 samples at 9 farms. Only 3 farmers knew RKN[Read More…]
In a recent grower visit in southwest Indiana, we saw a severe root-knot nematode infestation on high tunnel tomatoes. Soil fumigation is by far the most effective approach to control nematodes, but many soil fumigants are not labeled for greenhouse (high tunnel) use. In addition, the types of equipment that used for soil fumigation are[Read More…]