oa Agriprobe - Responses of root-knot nematode densities to aqueous extracts of Chilli and Tamboti

Volume 3, Issue 2
  • ISSN : 1810-9799



Tamboti <I>(Spirostachys africana)</I> bark and Chilli <I>(Capsicum frutescens)</I> var. Serrano fruit meal were evaluated with regard to the control of root-knot nematode (Meloidogyne incognita) population densities, plant parameters, soil electrical conductivity (EC) and soil pH, in tomato plants <I>(Lycorpersicon esculentum</I> L. var. Floradade). Three-week-old Floradade tomato seedlings were transplanted, each inoculated with 5000 and 4300 second-stage nematode juveniles for Experiment and Experiment 2, under greenhouse and micro-plot conditions, respectively. Treatments comprised unamended control, Tamboti, Chilli and a mixture of Tamboti + Chilli amendments, and were arranged in a randomised complete block design with 0 replicates. Upon harvesting, 08days after treatment initiation, in greenhouse Experiment , Chilli and Tamboti + Chilli reduced nematode numbers (P<U><</U>0.05) by 55% and 70% respectively. In greenhouse Experiment 2, Tamboti + Chilli reduced nematode numbers by 54%. In micro-plot Experiment and 2, Tamboti and Tamboti + Chilli reduced nematode numbers (P<U><</U>0.05) by 37% and 54% respectively. In greenhouse Experiment 2, Tamboti increased second fruit weight by 07% and Chilli by 59%. In micro-plot Experiment , Tamboti + Chilli increased first stem diameter by 32%. The study showed that Tamboti bark and Chilli fruit meal reduced nematode numbers, had no effect on soil EC and pH.

Loading full text...

Full text loading...


Article metrics loading...


This is a required field
Please enter a valid email address
Approval was a Success
Invalid data
An Error Occurred
Approval was partially successful, following selected items could not be processed due to error