This study sought to investigate the relationships between climate trends and tree reproductive cycles at the National Floristic Center of Abidjan over a period of more than thirty years. Climate trends were analyzed and reveal major increases in rainfall; more frequent extreme events; à decline in maximum temperature, which is a direct contradiction to the global records observed; and tree phenological rhythms. Monitoring of eleven tree species demonstrated continuous fruiting the greatest being in December for thirteen individuals, flowering at peak in February for five individuals belonging to three different species, and exhibiting different adaptations to new environmental conditions. The results indicated a high level of synchronization between the biological cycles of trees and climatic parameters. In this respect, the biological rhythms were particularly more sensitive to temperatures between January and May and the triggering of reproductive phases was more tied to rainfall. Overall mixes of responses were shown by the species, by climate trends and by climate variables.

This study is part of the sustainable management of soil fertility. It aims to identify biofertilizers to boost eggplant production. For this purpose, a randomized block device with three repetitions was set up. Within this device, the treatment consisted of the application of two biofertilizers separately or in combination: T0 (control): plot without fertilizer, T1: Plot fertized only with Azolla filiculoïdes, T2: Plot fertilized only with Tithonia diversifolia and T3: Plot fertilized only with chicken manure. From planting to harvest, growth parameters and yield (leaf length and width, height, diameter, wingspan, number of vegetables) of the Kalenda F1 eggplant variety were collected. The result of statistical analyses showed that the growth and production of plants was booted by the biofertilizer T.diversifolia. However, Azolla filiculoides could be applied in the absence of T.diversifolia.

Lianescent plant species have generally been neglected in botanical research despite the fact that they represent one of the important components of the flora of tropical forests and are of great use to rural Ivorian populations. Based on this observation, this study focused on the use of lianas by the cocoa-producing populations of the South-West of Ivory Coast. Thus, to collect information on the characteristics of producers and on the use of lianas associated with cocoa-based agrosystems, a survey was carried out among cocoa farmers in the village of Djapadji. For this purpose, two hundred (200) cocoa producers were interviewed. The results of these interviews reveal that cocoa producers in our study area are dominated by men (87%), indigenous people (53%) and adults (30 to 45 years old). In addition, lianas are mainly used by populations for medical care (78%) and also for food (13%). Ultimately, this study showed that cocoa plantations are full of large quantities of lianas; which lianas are of capital importance in the daily life of the populations of the South-West of Côte d’Ivoire.

Semi-structured interviews were conducted with 268 women in the Sous-préfecture of Kokumbo in central Côte d’Ivoire, in order to provide information on the role of women in the gathering, processing and marketing of products from species associated with cocoa trees in agroforestry systems. These interviews were coupled with direct observations alongside the women involved. The data collected was analyzed using descriptive statistics. The results of the investigations indicated that the majority of women (74.25%) of age to collect products from cocoa agroforests are between 16 and 50 years old. Over 65% of the women were illiterate, and 31.34% were heads of cocoa farms. The majority (41.05%) of women surveyed are actively involved in harvesting the associated products. Product processing in the study area is carried out entirely by women (100%). Processed products enable women to make better use of their produce. Also, it is during the lean season that the products bring in the most profit. Harvested produce is used primarily for household food consumption, with the surplus sold on the market. Income from the sale of cocoa products contributes to improving household living conditions, and also to the financial empowerment of women, while preserving the forest. The domestication of certain associated products should be envisaged by the women in order to have them available all year round for household consumption and eventual commercialization.

This study aims to investigate the diversity of species and assessing the availability of woodfuel plants used in rural areas by Koulango and Lobi populations on Eastern periphery of Comoé National Park. Two surveys were conducted in ten villages: a house-to-house interview and an individual walk-in-the woods interview with some informants. Frequency of citation use value were used to estimate the local knowledge of woodfuel plants. Floristic inventory based on random plot sampling method was applied on 200 small squares. A qualitative analysis through the households has showed that firewood was the fuel most used in households. Among the useful species, 6 plants were the most use species by both local populations. According to plants availability, in Comoé National Park, juvenile individual of 12 plants such as Berlinia grandiflora, Burkea africana and Vitellaria paradoxa were the most abundant species. Adult individual of plants were the most abundant species. In rural area, 8 plants like Daniellia oliveri, and Vitellaria paradoxa were the most abundant species. Annona senegalensis, Saba senegalensis and Vitellaria paradoxa were the 3 most abundant species. However, juvenile individual and adult individual of 16 plants such as Bombax costatum Margaritaria discoidea and Raphia sudanica were very rare in both areas (CNP and rural area). The study pointed out the importance of use value as tool to select the species which conservation must be emphasized in the management plans to meet not only the need of the populations but also to improve the conservation statute of the species. Finally, this study raises the fact that there is an urgent need to develop methods for a sustainable use of these plants from Eastern periphery of Comoé National Park.