12 research outputs found
The Northern Root-Knot Nematode on Carrot, Lettuce, and Onion in New York
Root-knot nematodes (Meloidogyne spp.) are major
pathogens of vegetables throughout the United States
and world, impacting both the quantity and quality
of marketable yields. In addition, root-knot nematodes
interact with other plant pathogens, resulting
in increased damage caused by other diseases. To
date, only the northern root-knot nematode (NRKN;
Meloidogyne hapla) has been found on vegetables
grown on organic or mineral soil in New York, as it
is able to survive the extreme low temperatures
during winter. The NRKN has a wide host range
consisting of more than 550 crop and weed species,
including weeds common to muck soils such as
dandelion (Taraxacum officinalis), purslane (Portulaca
oleracea), mallow (Malva rotundifolia) and
plantain (Plantago major). The increasing occurrence
and damage of this nematode to onions, lettuce,
and carrots grown on organic soils in New
York was recently documented