Landwirtschaftliche Verteilmaschine mit von einem elektronischen Rechensystem gesteuerten Dosierorganen welches Rechensystem eine Vorhersage einschliess einer Empfehlung zur Ausführung einer entsprechenden Behandlung ausgibt, welche auf einer Prognose des Tauniederschlags aufbaut.The agricultural distribution machine has a dosing element that supplies material, particularly crop by liquid in adjustable quantities or adjustable concentrations. A computer (2) has an electronic computing system (1) for determining the humidity degree of coverage of plants on the agricultural surfaces by a program with forecasting tool under consideration of previous or actual or predicted weather data (3). The program is stored in a storage of the computer. An expected dew coverage is calculated by the program. The calculated data is utilized for adjustment of spraying quantity.