Soro Lacina - Academia.edu (original) (raw)

Papers by Soro Lacina

Research paper thumbnail of Influence du contexte spatial et quelques facteurs climatiques sur la dynamique de trois espèces de Syrphidae (Insecta: Diptera) du cotonnier Gossypium hirsutum L. dans la région du Tchologo en Côte d’Ivoire

Journal of Animal and Plant Sciences

Il existe une diversité d’insectes utiles qui participent à la régulation des populations des ins... more Il existe une diversité d’insectes utiles qui participent à la régulation des populations des insectes ravageurs dans les parcelles cotonnières. Parmi ceux-ci, les espèces appartenant à la famille des Syrphidae jouent un rôle important en s’alimentant essentiellement de pucerons au stade larvaire et en étant pollinisateurs au stade adulte. Les espèces Ischiodon aegyptius (Wiedemann, 1830), Episyrphus balteatus (De Geer, 1776) et Sphaerophoria scripta (Linnaeus, 1758) ont été suivi dans le but d’identifier quelques facteurs climatiques, notamment la pluviométrie, la température et l’humidité relative de l’air qui influencent leur densité dans les parcelles de Korokara, Diawala, Kaouara et Kong. Les captures à la main, à l’aide de filet fauchoir et de pots barbers ont été effectuées dans 40 parcelles cotonnières. Les résultats ont montré que la pluviométrie n’influence pas significativement I. aegyptius (r = -0,29 ; p = 0,09) et de E. balteatus (r = -0,24 ; p=0,15) dans la localité de...

Research paper thumbnail of Study of Germination and Health Quality of Cotton Seed Grown in the West Central Region of Côte d'Ivoire

DOI: 10.21276/sjavs.2018.5.3.4 Abstract: In Côte d'Ivoire, cotton cultivation faces many cons... more DOI: 10.21276/sjavs.2018.5.3.4 Abstract: In Côte d'Ivoire, cotton cultivation faces many constraints including the thorny issue of quality seeds for meeting the challenge of optimal yield. In order to contribute to the achievement of this goal, we investigated the health and germination of cotton varieties used in west central region of Côte d’Ivoire. The cotton seed samples were collected from 10 farmers. Samples comprised 3 varieties which were grouped for laboratory and field analyses including Purity analysis, moisture content test, germination test and the seed borne mycoflora investigation. The result show maximum pure seed (95%) was found in cotton seed samples with a moisture content of 10 %. Cotton seeds of the 3 varieties had very low germination (<30%), highest number of dead seed (27% 95%) and abnormal seedlings (1 51 %) in the laboratory and in the experimental plot. Thereafter, seeds treatment with Thiram + Imidacloprid helped raise the germination rate to more ...

Research paper thumbnail of Sanitary Diagnosis of Cotton Cultivation in the West Central Region of Cote D'ivoire

International Journal of Applied Sciences and Biotechnology, 2018

In order to contribute to cotton cultivation sustainability in west central Côte…

Research paper thumbnail of Effect of three synthetic chemical insecticides on Cheilomenes sulphurea (Coleoptera: Coccinellidae), a predatory insect in cotton fieldin Ferkéssedougou, northern Côte d'Ivoire

Abusive use of pesticides in cotton plotsin Côte d'Ivoire is not without consequences for use... more Abusive use of pesticides in cotton plotsin Côte d'Ivoire is not without consequences for useful entomofauna. Very few studies based on the role of beneficial insects in pest management have been done. The study aims to knowthe effect of three pesticides on Cheilomenes sulphurea, in cotton plots. Hand capture of insect was conducted 24 hours before and 72 hours after each chemical spraying. Observations made before the first spraying showed the abundance of larvae (3.08 ± 1.83/30 plants) and adults (5.91 ± 2.6 /30 plants). Statistical analysis showed that there was no significant difference between the numbers of larvae (ddl = 11; F = 0.41 p = 0.75) and adults (ddl = 11; F = 0.13 p = 0.93). However, the number of larvae and adults of Cheilomenes sulphurea dropped considerably except in control plots after each spraying. All insecticides used were highly toxic on larvae (ddl = 11; F = 49 p = 0.000) and adults (ddl = 11; F = 50.80 p = 0.000). Cheilomenes sulphureaseems to be stron...

Research paper thumbnail of Sanitary Diagnosis of Cotton Cultivation in the West Central Region of Cote D'ivoire

In order to contribute to cotton cultivation sustainability in west central Côte d'Ivoire, a ... more In order to contribute to cotton cultivation sustainability in west central Côte d'Ivoire, a phytosanitary diagnostic study was conducted in 11 plots. It consisted of monitoring the sanitary condition of 10 rural plots and an experiment plot set up at the Research Farm of University Jean Lorougnon Guédé of Daloa according to the regular and careful inspection of cotton seed germination, seedling health and cotton plants throughout the growing season. The results obtained indicated that the cotton varieties used by farmers had very low germination with maximum number of healthy seedlings of 43.75 % in an experiment condition. Highest number of infected seedlings (24-51%) showing characteristic symptoms of seedling blight leading to their death was observed. Under cultivation, a variety of pests was identified on cotton plants. The most important were Bemisia tabaci, Jacobiella fasciali, Helicoverpa armigera, Dysdercus sp, Earias sp, Zonocerus Variegatus, Haritalodes derogata. The...

Research paper thumbnail of Sanitary Diagnosis of Cotton Cultivation in the West Central Region of Cote D'ivoire

In order to contribute to cotton cultivation sustainability in west central Côte d'Ivoire, a ... more In order to contribute to cotton cultivation sustainability in west central Côte d'Ivoire, a phytosanitary diagnostic study was conducted in 11 plots. It consisted of monitoring the sanitary condition of 10 rural plots and an experiment plot set up at the Research Farm of University Jean Lorougnon Guédé of Daloa according to the regular and careful inspection of cotton seed germination, seedling health and cotton plants throughout the growing season. The results obtained indicated that the cotton varieties used by farmers had very low germination with maximum number of healthy seedlings of 43.75 % in an experiment condition. Highest number of infected seedlings (24-51%) showing characteristic symptoms of seedling blight leading to their death was observed. Under cultivation, a variety of pests was identified on cotton plants. The most important were Bemisia tabaci, Jacobiella fasciali, Helicoverpa armigera, Dysdercus sp, Earias sp, Zonocerus Variegatus, Haritalodes derogata. The...

Research paper thumbnail of Spatial and temporal dynamics of Coccinellidae (Coleoptera) and Formicidae (Hymenoptera): Two families of beneficial insects, in cotton fields in the Tchologo region (Northern Côte d'Ivoire

This study was conducted to analyse spatio-temporal dynamics and the impact of rainfall and tempe... more This study was conducted to analyse spatio-temporal dynamics and the impact of rainfall and temperature on two beneficial insect-families in cotton farms in Côte d'Ivoire, Formicidae and Coccinellidae. They contribute to reduce the pest populations in the cotton farms. Data were collected in four localities treated with chemical vulgarized. Sampling, of rainfall and temperature data were collected respectively by direct counting, capture with mowing net, traps, rain gauges and thermo-hygro-meters installed. We have inventoried 7675 insects including 93% for the Formicidae and 7% for the Coccinellidae. Analysis of variance, showed that there is a significant difference in aboundance of Formicidae but there is no significant difference between the population of Coccinellidae. Rainfall and temperature have not affected the dynamics of beneficial insects populations. Knowledge of those beneficials insects is important to developt an integrated cotton pests control methods.

Research paper thumbnail of Influence du contexte spatial et quelques facteurs climatiques sur la dynamique de trois espèces de Syrphidae (Insecta: Diptera) du cotonnier Gossypium hirsutum L. dans la région du Tchologo en Côte d’Ivoire

Journal of Animal and Plant Sciences

Il existe une diversité d’insectes utiles qui participent à la régulation des populations des ins... more Il existe une diversité d’insectes utiles qui participent à la régulation des populations des insectes ravageurs dans les parcelles cotonnières. Parmi ceux-ci, les espèces appartenant à la famille des Syrphidae jouent un rôle important en s’alimentant essentiellement de pucerons au stade larvaire et en étant pollinisateurs au stade adulte. Les espèces Ischiodon aegyptius (Wiedemann, 1830), Episyrphus balteatus (De Geer, 1776) et Sphaerophoria scripta (Linnaeus, 1758) ont été suivi dans le but d’identifier quelques facteurs climatiques, notamment la pluviométrie, la température et l’humidité relative de l’air qui influencent leur densité dans les parcelles de Korokara, Diawala, Kaouara et Kong. Les captures à la main, à l’aide de filet fauchoir et de pots barbers ont été effectuées dans 40 parcelles cotonnières. Les résultats ont montré que la pluviométrie n’influence pas significativement I. aegyptius (r = -0,29 ; p = 0,09) et de E. balteatus (r = -0,24 ; p=0,15) dans la localité de...

Research paper thumbnail of Study of Germination and Health Quality of Cotton Seed Grown in the West Central Region of Côte d'Ivoire

DOI: 10.21276/sjavs.2018.5.3.4 Abstract: In Côte d'Ivoire, cotton cultivation faces many cons... more DOI: 10.21276/sjavs.2018.5.3.4 Abstract: In Côte d'Ivoire, cotton cultivation faces many constraints including the thorny issue of quality seeds for meeting the challenge of optimal yield. In order to contribute to the achievement of this goal, we investigated the health and germination of cotton varieties used in west central region of Côte d’Ivoire. The cotton seed samples were collected from 10 farmers. Samples comprised 3 varieties which were grouped for laboratory and field analyses including Purity analysis, moisture content test, germination test and the seed borne mycoflora investigation. The result show maximum pure seed (95%) was found in cotton seed samples with a moisture content of 10 %. Cotton seeds of the 3 varieties had very low germination (<30%), highest number of dead seed (27% 95%) and abnormal seedlings (1 51 %) in the laboratory and in the experimental plot. Thereafter, seeds treatment with Thiram + Imidacloprid helped raise the germination rate to more ...

Research paper thumbnail of Sanitary Diagnosis of Cotton Cultivation in the West Central Region of Cote D'ivoire

International Journal of Applied Sciences and Biotechnology, 2018

In order to contribute to cotton cultivation sustainability in west central Côte…

Research paper thumbnail of Effect of three synthetic chemical insecticides on Cheilomenes sulphurea (Coleoptera: Coccinellidae), a predatory insect in cotton fieldin Ferkéssedougou, northern Côte d'Ivoire

Abusive use of pesticides in cotton plotsin Côte d'Ivoire is not without consequences for use... more Abusive use of pesticides in cotton plotsin Côte d'Ivoire is not without consequences for useful entomofauna. Very few studies based on the role of beneficial insects in pest management have been done. The study aims to knowthe effect of three pesticides on Cheilomenes sulphurea, in cotton plots. Hand capture of insect was conducted 24 hours before and 72 hours after each chemical spraying. Observations made before the first spraying showed the abundance of larvae (3.08 ± 1.83/30 plants) and adults (5.91 ± 2.6 /30 plants). Statistical analysis showed that there was no significant difference between the numbers of larvae (ddl = 11; F = 0.41 p = 0.75) and adults (ddl = 11; F = 0.13 p = 0.93). However, the number of larvae and adults of Cheilomenes sulphurea dropped considerably except in control plots after each spraying. All insecticides used were highly toxic on larvae (ddl = 11; F = 49 p = 0.000) and adults (ddl = 11; F = 50.80 p = 0.000). Cheilomenes sulphureaseems to be stron...

Research paper thumbnail of Sanitary Diagnosis of Cotton Cultivation in the West Central Region of Cote D'ivoire

In order to contribute to cotton cultivation sustainability in west central Côte d'Ivoire, a ... more In order to contribute to cotton cultivation sustainability in west central Côte d'Ivoire, a phytosanitary diagnostic study was conducted in 11 plots. It consisted of monitoring the sanitary condition of 10 rural plots and an experiment plot set up at the Research Farm of University Jean Lorougnon Guédé of Daloa according to the regular and careful inspection of cotton seed germination, seedling health and cotton plants throughout the growing season. The results obtained indicated that the cotton varieties used by farmers had very low germination with maximum number of healthy seedlings of 43.75 % in an experiment condition. Highest number of infected seedlings (24-51%) showing characteristic symptoms of seedling blight leading to their death was observed. Under cultivation, a variety of pests was identified on cotton plants. The most important were Bemisia tabaci, Jacobiella fasciali, Helicoverpa armigera, Dysdercus sp, Earias sp, Zonocerus Variegatus, Haritalodes derogata. The...

Research paper thumbnail of Sanitary Diagnosis of Cotton Cultivation in the West Central Region of Cote D'ivoire

In order to contribute to cotton cultivation sustainability in west central Côte d'Ivoire, a ... more In order to contribute to cotton cultivation sustainability in west central Côte d'Ivoire, a phytosanitary diagnostic study was conducted in 11 plots. It consisted of monitoring the sanitary condition of 10 rural plots and an experiment plot set up at the Research Farm of University Jean Lorougnon Guédé of Daloa according to the regular and careful inspection of cotton seed germination, seedling health and cotton plants throughout the growing season. The results obtained indicated that the cotton varieties used by farmers had very low germination with maximum number of healthy seedlings of 43.75 % in an experiment condition. Highest number of infected seedlings (24-51%) showing characteristic symptoms of seedling blight leading to their death was observed. Under cultivation, a variety of pests was identified on cotton plants. The most important were Bemisia tabaci, Jacobiella fasciali, Helicoverpa armigera, Dysdercus sp, Earias sp, Zonocerus Variegatus, Haritalodes derogata. The...

Research paper thumbnail of Spatial and temporal dynamics of Coccinellidae (Coleoptera) and Formicidae (Hymenoptera): Two families of beneficial insects, in cotton fields in the Tchologo region (Northern Côte d'Ivoire

This study was conducted to analyse spatio-temporal dynamics and the impact of rainfall and tempe... more This study was conducted to analyse spatio-temporal dynamics and the impact of rainfall and temperature on two beneficial insect-families in cotton farms in Côte d'Ivoire, Formicidae and Coccinellidae. They contribute to reduce the pest populations in the cotton farms. Data were collected in four localities treated with chemical vulgarized. Sampling, of rainfall and temperature data were collected respectively by direct counting, capture with mowing net, traps, rain gauges and thermo-hygro-meters installed. We have inventoried 7675 insects including 93% for the Formicidae and 7% for the Coccinellidae. Analysis of variance, showed that there is a significant difference in aboundance of Formicidae but there is no significant difference between the population of Coccinellidae. Rainfall and temperature have not affected the dynamics of beneficial insects populations. Knowledge of those beneficials insects is important to developt an integrated cotton pests control methods.