The influence of some bio-products on germination and protection of basil seeds

Abstract

Basil (Ocimum basilicum L.) is an annual herb with medicinal, edible and economical values. To reach a yield potential, among other things, seed high germination percentage and seed vigor are required. The aim of the study was to discover the most efficient biopreparations with a beneficial effect on basil seed vigor, germination and seed health. Testing was conducted with two plant protection products, permitted in organic production ('Exstrasol F', Polyversum'), and three herbal preparations (fermented valerian extract, fermented extract of yarrow, and fermented LAB mix). Seed germination testing followed the standard procedure suggested by the Rule book on seed quality control, while seed health was examined by the filter paper method. The seeds were treated with 15 ml of bio-product solution, while the same amount of distilled water was used as a control. The experiment was conducted in three replications, and the seeds were observed on the 4th and 14th day following the treatment. The seed germination was increased in all treatments, in comparison to control. The treatments with fermented extract of yarrow had the highest effect on seed vigor. Based on the symptoms, the presence of Alternaria sp. was confirmed on the seed surface. Compared to control, the infection of seeds was reduced in all treatments, but the fermented extract of yarrow had the highest effect on disease reduction.