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Disease suppression on greenhouse tomatoes using plant waste compost.

William Cheuk1, Kwang Victor Lo, Robert Copeman

  • 1Vision Environmental Co. Ltd., Vancouver, British Columbia, Canada.

Journal of Environmental Science and Health. Part. B, Pesticides, Food Contaminants, and Agricultural Wastes
|May 26, 2005
PubMed
Summary
This summary is machine-generated.

This study shows compost amendment effectively suppresses Fusarium crown and root rot in greenhouse tomatoes. Adding compost to growing media significantly increased tomato yield by 74% despite pathogen infestation.

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Area of Science:

  • Agricultural Science
  • Plant Pathology
  • Soil Science

Background:

  • Yellow cedar sawdust is a common greenhouse growing medium.
  • Fusarium oxysporum f. sp. radicis-lycopersici (FORL) causes significant disease in greenhouse tomatoes.
  • Greenhouse crop waste is a potential resource for sustainable amendments.

Purpose of the Study:

  • To evaluate the disease suppression capabilities of a compost amendment derived from greenhouse crop waste.
  • To determine the efficacy of this compost amendment in controlling Fusarium crown and root rot in tomatoes.
  • To assess the impact of the compost amendment on tomato yield.

Main Methods:

  • A compost amendment was produced from greenhouse crop waste using a controlled, in-vessel process.
  • The compost amendment was tested as a seed cover, plug substitute, and mixed with yellow cedar sawdust (2:1 ratio).
  • Greenhouse trials were conducted using Fusarium oxysporum f. sp. radicis-lycopersici (FORL) on susceptible tomato cultivars (Dombito).

Main Results:

  • The compost amendment significantly reduced Fusarium crown and root rot in tomato seedlings.
  • A mixture of 2:1 sawdust to compost amendment by volume proved most effective for disease suppression.
  • Tomato yield increased by 74% over a nine-month growing season in FORL-infested soil amended with compost.

Conclusions:

  • Compost amendment derived from greenhouse waste is a viable biological control agent against Fusarium crown and root rot.
  • Incorporating compost amendment into growing media enhances tomato plant health and productivity.
  • Sustainable waste management through composting can improve greenhouse agricultural sustainability.