Nauka Przyroda Technologie

Abstract. The aim of the experiment was to determine the optimum sowing and harvesting time for obtaining high herbage yield of summer savory. Sowing in the field was carried out at four times: 7, 14, 21 and 28 April. The herb was harvested at three different developmental phases of the plant: at full flower bud formation period, at the beginning of flowering and in full flowering. The greatest fresh herbage mass yield was obtained from summer savory sown on 14 and 21 April. Variation in herbage yield also depended on the developmental stage at which summer savory was harvested. The highest and not showing significant differences fresh herbage mass yield was recorded for the plants harvested at the beginning of flowering and in full flowering.