Anordning för selektiv ogräskontroll med kortvariga högspänningspulser

摘要

The device is selective and only harms growing weed seed and plants early in the life cycle. The required energy amt. is small, with four-sided pulses with an optimal field strength between 100 and 300 kV/m of short duration (10-100 microseconds). A converter (2) can be placed on a sowing machine for conversion of electrical or mechanical energy to high voltage pulses. The energy can be delivered from a towing tractor via a power transmission (1) or from a local power source. The high voltage pulses are applied via two or more applicators (3) at a fixed mutual distance from the earth around the freshly sown seeds in the form of short-duration pulses.