author(s)
SG Gazi

abstract
The article provides information on bioecology, phenology, and the damage level of ordinary mole cricket Gryllotalpa gryllotalpa (Linnaeus, 1758), that is one of the most dangerous pests in sugar beet, as a result of studies conducted in sugar beet fields in Imishli region of Azerbaijan. The researches were carried out in sugar beet fields at Khalfali village of Imishli region during March-October 2014-2016. It has been established that the gryllotalpa of the main pests of the plant gives a generation in aggregate during the season, and goes to winter for both imago and larvae at the latter age. The mass output of individuals from wintering is observed at the end of March, in early April, at depths 10-15 cm in the soil, when the temperature is 10-13 °C, and the air temperature is 15-17°C. Egging process is long lasting, and continues in late July and sometimes even till September. They put their egg in the depths of 10-12 cm. A mother individual has the potential to egg up to 550-600 pieces. The embryonic development takes 12-24 days, depending on the temperature.