Figure 7

Main components of expectations of owners of farms with different areas with regard to the possibility of using probes to optimize agrotechnical treatments: 1-date of commencement of field works, 2-date of sowing, 3-sowing depth, 4-method of soil cultivation, 5-method and fertilization dose, 6-application of plant protection products, 7-dates of fertilization. With regard to functional features of the probes: 8-price, 9-measurement accuracy, 10-measurement range 0–15 cm, 11-measurement range 0–30 cm, 12-reliability and resistance to damage, 13-easy installation and operation, 14-sending results to a smartphone/computer, 15-information on the dose of water for irrigation, 16-measurement data used to automate irrigation.