In order to improve the yield and production of eggplant (Solanum melongena L.) by fertilization taking into account the problem of soil infertility, a lack of official recommendations on the use and optimal doses of fertilizers used and the low rate of their application in Haiti, this study was carried out on the fertilization of eggplant during the period from June to December 2019. The study was carried out in Cabaret, in the Gary Prince locality for estimate the optimal economically profitable application rates of nitrogen (N), phosphorus (P) and potassium (K) using response surface methodology (RSM) and also determine the effect of these elements and their interaction on the agronomic performance of 3 varieties of eggplant: Black Beauty, Florida Market and Long Purple. Five (5) levels of each element were tested using the Central Composite Rotatable Design (CCRD).
Effet de différentes densités de semis et de l’association culturale sur les performances du maïs (Zea mays) et du sorgho (Sorghum bicolor) en culture intercalaire avec le pois inconnu (Vigna unguiculata) dans la commune de la Croix-Des-Bouquets.
Intercropping is the main farming method practiced in Haiti. It occupies more than 65% of the useful agricultural areas, with the dominance of cereals (maize, sorghum), cultivated mainly with legumes such as the cowpea. Poor farming practices is one of the main constraints encountered in this system, especially in terms of densities. The plants are grown at low seed densities, so finding an optimum density that promotes better yields is difficult.