The influence of the biostimulator on the yield components and yield of faba bean (Vicia faba var. minor)

Faba bean is the third most important legume species after peas and beans in the world. The study on the influence of the biostimulator Slavol-S on the morphological and production characteristics of faba beans (Vicia faba var. minor) were carried out in the growing seasons of two successive years, in the agro-ecological conditions of Banja Luka. During the field research, the following parameters were analyzed: plant height (cm), number of pods per plant, pod length (cm), number of grains per pod, weight of grains per pod (g), harvest index (%) and grain yield (kg ha-1). Two-year average height of the plants in the control treatment was 81.3 cm and under the treatment with biostimulator Slavol-S it was 105.1 cm. The effect of the treatment with the biostimulator on the height was highly significant in both years. Two-year average number of pods per plant in the control treatment was 9.25, while in the treatment with the biostimulator it was 12.38. The effect of biostimulator on the number of pods per plant was highly significant. In the control variant, two year average number of seed per plant was 1.97, while biostimulator treatment provided 2.41 seeds per plant. Two year average harvest index under the treatment with biostimulator was 9.33% higher than in the control variant. The impact of biostimulants was highly statistically significant and is recommended for improving beans production.