Effects of olive oil solid waste on growth and nutrient uptake of faba bean, onion, and radish plants

Abstract

Although, olive oil industry is crucial for Turkey, olive oil solid waste or olive vegetation water, a by-product of the industry, leads to environmental pollution during olive oil production. This study investigated the fields where olive oil solid waste was used as an organic substance. Olive oil solid waste in different concentrations (0, 10, 20, 30 and 40 t ha-1) were applied to faba bean, onion and radish plants grown (in 1 m2 plots) in the field conditions. Germination rates and growth of the plants were monitored. The application at the rates of 10 to 30 t ha-1were determined as the most appropriate rates for both faba bean and onion. The higher rates of application negatively affected germination and growth of plants. The application at 20 t ha-1 concentration of olive oil solid waste provided the best results for faba bean and onion plants. However, none of the application rates were found suitable for radish. Keywords: Olive oil solid waste; germination; plant growth; plant analysis