AbstractIn order to improve vegetative quality, root development and increase growth rate, humic substances have been used in this test on hawortia tessellata and hawortia papillosa, succulents on which there are usually delays in the growth cycle and problems related to water and salt stress, especially in pot cultivation. The data show that the use … Continua a leggere Article: “Qualitative and physiological effect of humic substances on Hawortia tessellata and Hawortia papillosa,”