The invention relates to a method for controlled dispensing of liquid pesticides and / or fertilizers by means of an agricultural distributor, more especially by means of a field sprayer (10). In the method, mounted on a on the distributor or sprayer (10) spraying boom (16), crop protection and / or fertilizer liquid is during a field drive the distributor or sprayer (10) by means of at least one spray nozzle (20) (a plant population 22 ) distributed. The method comprises several steps, so among others, the input or reading of set values in a computer system (32), in particular for setting a defined wetting of the plant stand (22), a variation of Ausbringparametern for plant protection and / or fertilizer liquid, taking into account at least the input nominal values, the constant, cyclic and / or intermittent detection of a wetting degree of the plants of the plant stand (32) after spreading of the crop and / or fertilizer means of at least one the spray boom (16) downstream of the monitoring means (30), and the comparison of the by means of the monitoring means detected (30) degree of wetting of the plants of the plant stand (32) by the computer system (32) with the calculated value based on the target input predetermined degree of wetting. The Ausbringparameter be adjusted based on a deviation of the detected degree of wetting of the predetermined degree of wetting of the plants of the plant stand (22).
