SAN DIEGO -- Newly established quarantines are in place in Fallbrook and Valley Center following infestations by two crop-damaging insects, the California Department of Food and Agriculture announced Wednesday.

The discovery of three Mediterranean fruit flies led to the establishment of a 79-square-mile quarantine in the Fallbrook area, according to the CDFA.

An Asian citrus psyllid trapped in the Valley Center area triggered the extension of an existing quarantine in the North County to about 977 square miles.

Agricultural shipments from the quarantine zones are restricted, according to the CDFA.

The quarantine requires that local residents not move home-grown fruits and vegetables from their properties and instead consume them on site, according to the CDFA. Additionally, the CDFA is working with local growers, packing houses, transporters and farmers' markets to ensure they are complying with quarantine regulations.

State agricultural officials have begun treating quarantine areas.

Medflies can infest more than 260 types of fruits and vegetables. Asian citrus psyllid can carry the disease huanglongbing, also known as citrus greening disease, which can cause diseased trees to produce inedible fruit and ultimately die.