To the development of optimal methods for licorice seeds growing (Glycyrrhiza glabra L.) in irrigated lands of the Republic of Karakalpakstan

Abstract

The research was carried out at the Nukus branch of the Tashkent State Agrarian University.The article presents the results of research on the development of optimal methods for growing licorice (Glycyrrhiza glabra L.) from seeds on salinity lands of the Republic of Karakalpakstan. In particular, the optimal rates of application of potassium geohumate for soaking licorice seeds, the rate of washing during soil desalination, the rates of mineral fertilizers and irrigation have been determined. The study of the effect of potassium geohumate on seed germination showed that soaking licorice seeds in a 0.05% solution of potassium geohumate for 3 days followed by drying the seeds in the open air provided the best germination on the 30th day after sowing and amounted to 72.6%, while the germination of licorice in the variant with the use of 0.03% potassium geohumate solution was 38.6%. The germination of the control variant was only 22.3%. It has also been established that the optimal rate of mineral fertilization for licorice is the application of 300 kg/ha of superphosphate, 150 kg/ha of potassium and 100 kg/ha of ammonium nitrate for 8 irrigations with a rate of 600 m3/ha.