At least 70 olive trees were torched near the occupied city of Nablus as harvesting season begins, according to Palestinian Authority's official news agency Wafa.
Ghassan Daghlas, an official who monitors settlement construction in the northern West Bank, said settlers set fire to olive groves located between the towns of Burin and Huwwara.
Palestinian farmers rely on the annual olive harvesting season for income. Israeli settlers commonly vandalise Palestinian olive farms in a deliberate attempt to stifle their revenue, commonly by setting fire to olive farms and poisoning the plants.
For many Palestinians in rural areas they have little alternative to olive farming.
Israel has occupied the West Bank illegally since 1967, committing various crimes against Palestinian civilians.
More than 600,000 Israeli Jews live in settlements in the occupied West Bank and East Jerusalem, in constructions considered illegal under international law.