Research Information System
AGBIOL, Edirne, Turkey, 29 - 31 August 2022, pp.421-422
Biostimulants increase plant growth and yield by activating physiological and metabolic processes to improve plants' nutrient uptake from the soil. The biostimulant effect of plant extracts obtained from plant leaves, roots and seeds are intended for increasing the uptake of nutrients available in growth media. It also helps to increase the stress tolerance of plants. Many factors such as the production method, biochemical content, application method, application dose, application frequency, and target plant species of plant extracts are closely related to the positive or negative effects of the allelopathic effect. Field trials have a vital role in developing low-input innovative approaches, their applicability in field conditions, their effects on yield and quality parameters, and the determination of success rates and deficiencies. In addition, it has aimed to obtain findings that will contribute to the recovery of production wastes (such as post-harvest plant parts, roots, leaves and plant pulp) and increase the usage areas. Sunflower seeds were treated with different doses of the prepared plant extract. The effects of plant extracts on the studied parameters of sunflower varied according to the processing time and the type of plant extract. It has been determined that it has a significant positive effect on physiological processes such as germination time, seedling formation, tray formation time, and tray diameter in sunflowers. According the results, physiological maturity processes were approximately 20% Marocter between the extracts applied and the non-extracted sunflowers seeds. In addition, statistically significant differences were determined between yield parameters such as the number of grains per tray and oil yield. Besides, important results have been obtained that will contribute to the application of exogenous seed preparation of renewable, bio-based plant extracts, low-input sustainable agriculture and organic farming systems. It was determined that the application of exogenous plant extract in sunflower created significant differences in the criteria examined from germination to harvest. In addition, the study is one of the important studies in which the wastes generated as a result of plant production and processed products gain economic value by recycling them as biostimulants.