Partner 840 is an innovative liquid fertilizer based on low and medium molecular weight free amino acids, of the levorotatory type (biologically active form), fundamental for the formation of new plant tissues and rapidly assimilated by crops. The product is obtained from the hydrolysis of an organic animal substance and its application in fertigation promotes plant growth, fruits and vegetables growth, it increases nutrients uptake and it speeds up the recovery of the plant after atmospheric stress. Finally, Partner 840 contributes to improving the chemical-physical and biological characteristics of the soils also reducing salinity and increasing the activity of beneficial micro-organisms.