Cutworms: Irrigation in years with early droughts is recommended.
Colorado beetle: Selective methods (e.g. B. thuringiensis tenebrionisor Insect growth regulators) should be preferred.
Start first Phytophthora control based on a risk assessment.
Row application of fungicides should be made before crop closure.
Pure mechanical control.
Combination of chemical and mechanical control.
No pre-emergence/soil herbicides.