Articles
Phytosanitary practices in the market garden area of Niayes, Senegal
Article number
1355_23
Pages
179 – 186
Language
English
Abstract
In sub-Saharan Africa, vegetable crops are an essential component of sustainable development.
However, occurence of insect pest is a major obstacle to improving the productivity and quality of horticultural production.
To limit crop losses, producers resort to chemical control, with side effects in the use of insecticides.
The objective of this study is to assess the phytosanitary practices of producers in the Niayes area.
Surveys were carried out on a total of 116 cabbage plots and 98 tomato plots in a north-south transect of the Niayes, from transplanting to harvest.
The results show a significant variability between producers in the management of the phytosanitary protection of their plots, with the number of insecticide treatments per plot ranging from 0 to 12 for a crop cycle (4 treatments on average). No difference was observed between cabbage and tomato crops.
The average number of treatments was higher in the southern (4.5) and northern (4.2) zones than in the central Niayes zone (3.4). In the northern zone, almost half of the treatments were carried out with organophosphates (OPs), while they represented only 22% in the southern zone, where pyrethroids were more used (30%). The central zone is dominated by avermectins (21%). In the southern and central zones, slightly more than 20% of treatments use binary (or even ternary) formulations, combining pyrethroids and neonicotinoids.
The environmental impact Quotient (EIQ) of these practices is on average moderate (32), but highly variable (0-169) between plots.
This study highlighted the state of phytosanitary practices of producers in the Niayes area.
However, occurence of insect pest is a major obstacle to improving the productivity and quality of horticultural production.
To limit crop losses, producers resort to chemical control, with side effects in the use of insecticides.
The objective of this study is to assess the phytosanitary practices of producers in the Niayes area.
Surveys were carried out on a total of 116 cabbage plots and 98 tomato plots in a north-south transect of the Niayes, from transplanting to harvest.
The results show a significant variability between producers in the management of the phytosanitary protection of their plots, with the number of insecticide treatments per plot ranging from 0 to 12 for a crop cycle (4 treatments on average). No difference was observed between cabbage and tomato crops.
The average number of treatments was higher in the southern (4.5) and northern (4.2) zones than in the central Niayes zone (3.4). In the northern zone, almost half of the treatments were carried out with organophosphates (OPs), while they represented only 22% in the southern zone, where pyrethroids were more used (30%). The central zone is dominated by avermectins (21%). In the southern and central zones, slightly more than 20% of treatments use binary (or even ternary) formulations, combining pyrethroids and neonicotinoids.
The environmental impact Quotient (EIQ) of these practices is on average moderate (32), but highly variable (0-169) between plots.
This study highlighted the state of phytosanitary practices of producers in the Niayes area.
Authors
M. Diatte, B. Labou, S. Sylla, E. Tendeng, I.A. Ndiaye, S.O. Sène, A. Baldé, O. Seydi, P. Diop, K. Diarra
Keywords
horticulture, insecticides, EIQ, Niayes, Senegal
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