The current study was performed to determine Hirudinea species diversity collected from rice fields of Guilan province June 2012 2020. This reports the most recent information on leech (Annelida, Clitellata) in this region. Morphological characters and DNA barcode analysis were used identify samples. According acquired results, there two families zone (Glossiphoniidae Hirundinidae). Based morph...

this research was conducted in the west forest of guilan, northern iran. data from various harvesting methods for 20 years were collected. results showed that, productivity rate of round wood, pulp wood and fuel wood has had an upward trend, while rate of traditional products (lumber, sawn wood, charcoal, etc.) has had a downward trend. production cost has been investigated in this research. th...

INTRODUCTION AND OBJECTIVE Deoxynivalenol (DON) is one of several mycotoxins produced by certain Fusarium species that frequently infect wheat, corn, rice, oats, barley and other grains in the field or during storage. Guilan, Golestan and Mazandaran areas are located in the North Iran with favorite conditions for Fusarium growth. DON affects animal and human health causing vomiting, acute tempo...

Increased cost of tobacco cultivation is a major concern for its sustainable production in Iran. Therefore, the development of tobacco mechanized cultivation is a necessity. Given this, the driving and inhibiting factors of the development of mechanized tobacco cultivation were investigated by the Delphi technique in three rounds in Guilan Province, Iran. Nineteen experts from the Jahad Agricul...