The relative tolerance of local and introduced varieties of tomatoes (Lycopersicon esculentum (L) Mill) to root knot nematodes (Meloidogyne spp.)
1978
Chineke, A.
In a field test on soil, part infested with root knot nematodes and part treated with nemagon (a nematicide), and in an open greenhouse, two-week old seedlings of some tomato varieties were exposed to liquid and solid inoculum of nematodes, to study their relative tolerance. In both local and foreign varieties, nemagon application caused increases in the height and fruit yield. The size and frequency of root knots, proportion of infected lateral roots on weight and number basis for the greenhouse test matched the field test. Solid inoculum was a better source of infection. None of the varieties was immune to the nematode infection but introduced varieties showed some resistance. The local varieties showed an excellent growth and yield performance despite their high level of susceptibility
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