Effect of Soybean Crop Residue Compost on the Productivity of Guinea Sorrel (Hibiscus sabdariffa)

Ivorian soils are facing a loss of fertility that affects the production of market gardeners such as the cultivation of guinea sorrel. In order to propose a method of producing guinea sorrel that takes into account the environment and is accessible at a lower cost to producers, fertilization based on compost from crop residues was undertaken. For this purpose, six (6) doses of compost based on soybean crop residues were tested (without application of fertiliser, 02 tonnes per hectare (t. ha-1), 04 t. ha-1, 06 t. ha-1, 08 t. ha-1 and 10 t. ha-1). The parameters measured concerned the vegetative parameters and the yield components. The vegetative development (DV) of the plants was influenced by the different treatments at 45 days after sowing (45 DAS), with the most important DV being those obtained with the doses of 06 t. ha-1 and 10 t. ha-1. ha-1 treatments generated the best values. As for the yield, it was significantly higher with the doses of 02 t. ha-1; 04 t. ha-1 and 10 t. ha-1 with respectively 18.67; 18.73; 18.33 t. ha-1. According to the results obtained, the dose of 02 t. ha-1 would be the most effective since it is the lowest dose that produced as much as the doses 04 t. ha-1 and 10 t. ha-1.