ü whole grain analyzer Infratec 1241^TM with sample transport module (FOSS, Analytical Hilleroed, Denmark),

ü mobile sensor platform – MSP-3 (Veris Technologies, Salina, USA),

ü active optical sensors OptRx with equipment for variable nitrogen application (AgLeader, Ames, USA),

ü active optical sensor – GreenSeeker, model 505 (Trimble Inc., Sunnyvale, USA),

ü yield mapping system (AgLeader, Ames, USA),

ü on-combine grain analyzer – AccuHarvest (Zeltex, Hagerstown, USA),

ü high-accuracy automated steering system – GeoSteer (AgLeader, Ames, USA),

ü pressure plate extractor with 0 to 5 bar pressure range (Soilmoisture Equipment Corp., Santa Barbara, California, USA.