Articles
USE OF COMPOST FROM DIFFERENT ORIGINS TO CONTROL SOILBORNE PATHOGENS IN POTTED VEGETABLES
Article number
1044_17
Pages
145 – 148
Language
English
Abstract
Compost suppressiveness varies according to the type of wastes and the composting process, so the aim of this research was to evaluate the suppressiveness of composts produced from different origins for controlling soilborne pathogens in potted plants.
Composts originated from green wastes and/or municipal biowastes, using a traditional composting system or an integrated biogas/composting system were used.
Suppressiveness was tested in greenhouse on potted plants against Fusarium oxysporum f. sp. basilica/basil, Pythium ultimum/cucumber, Rhizoctonia solani/bean, Phytophthora nicotianae/tomato and Phytophthora capsici/pepper.
Composts were blended with a peat substrate at different dosages (10, 20 and 50% vol./vol.) 14 days before seeding or transplanting.
Pathogens were mixed into the substrate at 0.5 or 1 g of wheat kernels L-1 7 days before seeding.
Seeds of basil, cucumber and bean and seedlings of tomato and pepper were sown into 2 L pots in greenhouse.
The number of alive plants and above ground biomass were measured 20-30 days after seeding or transplanting.
The number of diseased cucumber, basil and pepper plants was significantly reduced by increasing dosages of municipal compost.
The application of composts on tomato and bean did not increase significantly the number of alive plants compared to control.
Composts originated from green wastes and/or municipal biowastes, using a traditional composting system or an integrated biogas/composting system were used.
Suppressiveness was tested in greenhouse on potted plants against Fusarium oxysporum f. sp. basilica/basil, Pythium ultimum/cucumber, Rhizoctonia solani/bean, Phytophthora nicotianae/tomato and Phytophthora capsici/pepper.
Composts were blended with a peat substrate at different dosages (10, 20 and 50% vol./vol.) 14 days before seeding or transplanting.
Pathogens were mixed into the substrate at 0.5 or 1 g of wheat kernels L-1 7 days before seeding.
Seeds of basil, cucumber and bean and seedlings of tomato and pepper were sown into 2 L pots in greenhouse.
The number of alive plants and above ground biomass were measured 20-30 days after seeding or transplanting.
The number of diseased cucumber, basil and pepper plants was significantly reduced by increasing dosages of municipal compost.
The application of composts on tomato and bean did not increase significantly the number of alive plants compared to control.
Publication
Authors
M. Pugliese, M.L. Gullino, A. Garibaldi , A. Benetti
Keywords
organic amendments, compost suppressiveness, Fusarium oxysporum f. sp. basilica, Pythium ultimum, Rhizoctonia solani, Phytophthora nicotianae, Phytophthora capsici
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