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University of Guelph (1999)

Use of marigold and Mexican sunflower to control nematode parasites of tomato in Namibia

Rosloski, Sarah M. 

Titre : Use of marigold and Mexican sunflower to control nematode parasites of tomato in Namibia

Auteur : Rosloski, Sarah M. 

Université de soutenance : University of Guelph

Grade : Master of Science (MS 1999)

Résumé
Field experiments were conducted in Namibia to study the effect of the French marigold and the Mexican sunflower on parasitic nematodes in tomato. It was hypothesized that these plants could suppress nematode infestation of tomato, as previous research has shown that these plants are nematode-suppressive. A cover cropping and a green manure experiment, in conjunction with tomato resistance to the root-knot nematode, were evaluated. The cover cropping experiment comprised a first season planting density of 0, 40, 50, 60 cm $\times$ two nematode suppressive plants (marigold and sunflower), followed by a test cropping in the second season with a nematode susceptible tomato cultivar. The green manure experiment comprised a four-treatment (0, 50, 100, 150 Kg sunflower green manure/19.25 m$\sp2$ plot) $\times$ two tomato cultivar (resistant or susceptible to root-knot nematodes) design. Marigold was a host plant for nematodes but sunflower was not. However, neither plant suppressed parasitism of tomato. Green manuring increased tomato plant growth but did not suppress nematodes. The resistant tomato cultivar had a suppressive effect on nematodes. The results have relevance to nematode control in Namibia.

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Page publiée le 2 février 2018