Effect of soil and climatic conditions on brown spot occurrence in rice lowland across four agro-climatic zones of Côte d’Ivoire

Publication Type

Journal Article

Name of Author

• Jean-Fabrice Akouemaho Dominique Adanve, University Felix Houphouët-Boigny (U-FHB), Côte d'IvoireFollow
• Brahima Koné, University Felix Houphouët-Boigny (U-FHB), Côte d'Ivoire
• Rachidatou Sikirou, National Institute of Agricultural Research of Benin, Cotonou, Benin
• Elliott Dossou-Yovo, Africa Rice Center, Abidjan, Côte d’Ivoire
• Geoffrey Onaga, Africa Rice Center, Abidjan, Côte d’Ivoire
• Fatogoma Sorho, University Felix Houphouët-Boigny (U-FHB), Côte d'Ivoire

Publication Date (Issue Year)

2023

Journal Name

Annual Research & Review in Biology

Abstract

Methodology: BS characterization were done in different farmer fields where soil samples were also collected during dry and rainy seasons. Soil silicon and acidity were determined in those samples and rice grain yield at harvest time were recorded in different sites. Weather data related to sites and seasons were used to find out correlations. Results: Occurrence of BS was found in forest zones with scores of 4 and 3 compared to 1 and 2 in savanna and transitional zones, respectively, with seasonal variation. Both rice production and the occurrence of BS were explained by soil parameters in conjunction with climatic parameters. Rainfall (R=0.38) and relative humidity (R=0.64) leaded BS occurrence and decrease of yield. Wind speed (R=0.62) and air maximum temperature (R= 0.63) were the determinant factors affecting rice yields. Si was found to be a component of sustainable soil management that interferes with soil pH in all climatic zones. Combined with Temperature, both soil parameters predicted BS occurrence over 50%. Conclusion: Temperature decrease BS pathogens occurrence whereas high humidity increases its spread. Those parameters combined with silicon which interferes with pH could leads sustainable solutions in BS control. Furthermore, having a deep understanding with rice varietal considerations can significantly improve strategies related to rice cultivation and protection.

Keywords

Precision agriculture, disease forecasting, rice, brown spot, silicon.

Rsif Scholar Name

Jean-Fabrice Akouemaho Dominique Adanve

Rsif Scholar Nationality

Benin

Cohort

Cohort 2

Thematic Area

Climate Change

Africa Host University (AHU)

University Felix Houphouët-Boigny (U-FHB), Côte d'Ivoire

Funding Statement

The authors acknowledge PASET-Regional Scholarship and Innovation Fund for capacity building support during this study. We acknowledge gratefully students, farmers, and seniors for their implications in development of this research and helpful comments on this manuscript

Recommended Citation

Adanve, J. A., Koné, B., Sikirou, R., Dossou-Yovo, E., Onaga, G., & Sorho, F. (2023). Effect of soil and climatic conditions on brown spot occurrence in rice lowland across four agro-climatic zones of Côte d’Ivoire. Annual Research & Review in Biology, 46-60. https://doi.org/10.9734/arrb/2023/v38i430581