Articles
Biological control in horticultural agro-ecosystems in Senegal
Article number
1348_18
Pages
129 – 134
Language
English
Abstract
Insect pests cause significant damage to crops.
They are often difficult to control using insecticides, whose systematic use leads to resistance, suppression of natural enemies, and contamination of fruits and vegetables.
The objective of this work is to evaluate the natural regulation of the main crop pests by their natural enemies in Senegal.
The tomato fruitworm (Helicoverpa armigera), the diamondback moth (Plutella xylostella), the South American tomato leafminer (Tuta absoluta), the fall armyworm (Spodoptera frugiperda) and the fruit fly (Bactrocera dorsalis) were targeted.
The study sites are located in the northern, central and southern zones of Senegal.
The target pests were monitored in the field and in the laboratory to assess the associated parasitism.
Natural enemies regulate up to 25.5% of the tomato fruitworm populations, 97% of the tomato leafminer populations, 64% of the diamondback moth populations and 73% of the fruit fly populations.
The fall armyworm has a large parasitic procession that can totally control the pest.
This work shows an important diversity of species of natural enemies native to Senegal.
These beneficials constitute credible alternatives to the use of chemical pesticides.
They are often difficult to control using insecticides, whose systematic use leads to resistance, suppression of natural enemies, and contamination of fruits and vegetables.
The objective of this work is to evaluate the natural regulation of the main crop pests by their natural enemies in Senegal.
The tomato fruitworm (Helicoverpa armigera), the diamondback moth (Plutella xylostella), the South American tomato leafminer (Tuta absoluta), the fall armyworm (Spodoptera frugiperda) and the fruit fly (Bactrocera dorsalis) were targeted.
The study sites are located in the northern, central and southern zones of Senegal.
The target pests were monitored in the field and in the laboratory to assess the associated parasitism.
Natural enemies regulate up to 25.5% of the tomato fruitworm populations, 97% of the tomato leafminer populations, 64% of the diamondback moth populations and 73% of the fruit fly populations.
The fall armyworm has a large parasitic procession that can totally control the pest.
This work shows an important diversity of species of natural enemies native to Senegal.
These beneficials constitute credible alternatives to the use of chemical pesticides.
Publication
Authors
K. Diarra, B. Labou, M. Diatte, S. Sylla, E. Tendeng, L. Diamé, O. Seydi, A. Baldé, P. Diop, S.O. Sène, I.A. Ndiaye
Keywords
biodiversity, pests, natural enemies, parasitoids, natural control, Senegal
Groups involved
- Division Plant Genetic Resources, Breeding and Biotechnology
- Division Tropical and Subtropical Fruit and Nuts
- Division Temperate Tree Fruits
- Division Temperate Tree Nuts
- Division Vine and Berry Fruits
- Division Ornamental Plants
- Division Vegetables, Roots and Tubers
- Division Plant-Environment Interactions in Field Systems
- Division Greenhouse and Indoor Production Horticulture
- Division Postharvest and Quality Assurance
- Division Precision Horticulture and Engineering
- Division Horticulture for Human Health
- Division Sustaining Horticulture in a Changing World
- Division Landscape and Urban Horticulture
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