Evaluation of Root- knot Nematode Management Strategies Based on their Distribution in Tomato Fields in Mwea, Kenya
Abstract
185 words
Tomatoes (Solanum lycopersicum) are mainly grown by small
scale farmers in most arable areas in Kenya with the main
production areas being in Central Province. Tomato production
in Kenya is hampered by a variety of pests and diseases among
other factors. Plant parasitic nematodes (PPN), particularly
root knot nematodes (RKN) are a serious pest problem in
smallholder tomato farms in Kenya. Nematode management is
primarily dependent on the application of chemical nematicides.
These nematicides are often broadcasted uniformly on the
cultivated fields regardless of the relative nematode distribution
in the farm. However nematode populations are usually not
uniformly distributed. Uniform field-wide applications of
nematicides can therefore result in wasteful expenditure as well
as adverse environmental effects. Identification of specific areas
within individual fields for targeted nematicide application may
allow producers to reduce the amount of nematicides applied
for nematode control and lower production costs. This study
evaluated different nematode management strategies for varying
nematode densities in Mwea, Kenya. Nematode resistant tomato
varieties Assila, Sandokan and a susceptible variety, Riograndeas well as varying applications of Mocap (Ethoprophos) were
evaluated and the most effective management options identified.
Subjects
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