Productivity of Hyssopus officinalis on dropped irrigation in southern steppe of Ukraine

Researches conducted on lands Nikolayev state agricultural research station IIA NAAS In 2017- 2018. Soil of an experimental plot is chernozem southern weakly eroded clay loamy on loess's, it is noted by high contents potassium, average - phosphorus and it is not enough provided by nitrogen. Climate of region - continental, is characterized sharp and repeated by fluctuations annual and month temperature of air, greater spare of heat and aridity. Agrotechnic in experiment was generally accepted for southern Steppe of Ukraine. Scheme of experience included three factors - a sowing periods: II ten-day period of October (winter), II ten-day period of November (underwinter), I ten-day period of April (spring); variants of fertilizers: without fertilizers (control), recommended dose (N60P60) and N30P30 broadcast + N30Р30 with irrigated water; the modes of irrigation: 80-70-70% of minimum moisture-holding capacity and 90-80-70% of minimum moisture-holding capacity...