tetranychus urticae koch is an important and destructive pest of crops, fruits and ornamental plants in worldwide. the high fecundity of t. urticae and its abruptly life span as well as the extensive application of acaricides for keeping t. urticae damages below economic injury level, caused to resistance to acaricides and control failures. in this research the fumigant activity of essential oi...

The Powder River Basin in Wyoming and Montana contains the United States' largest coal reserve. The area produces large amounts of natural gas through extraction from water-saturated coalbeds. Determining the impacts of coalbed natural gas-produced efflux water on crops is important when considering its potential use as supplemental irrigation water. We hypothesized that coalbed natural gas wat...

root-knot nematodes (meloidogyne spp.) are one of the most important plant parasitic nematodes which cause damage to crops. in recent years, using of medicinal plants has been considered to many scientists as effective methods for controlling nematodes. in this study, essential oils of ecalyptus spp., dorema ammoniacum and ferula galbanifula were tested against the root-knot nematode (meloidogy...

Camelina and pennycress are two annual oil-producing plant species that have recently gained attention as biofuel feedstock crops. Prior to commercial production, information on their breeding and pollination system is essential to ensure sustainable management. We conducted pollination experiments and observed flower visitors in an experimental double-cropping system in southern Germany. We fo...

two-spotted spider mite (tetranychus urticae koch), is one of the most seriously important  polyphagous pests that causes considerable damage to agricultural crops. in recent years, due to problems associated with the use of synthetic pesticides, herbal essential oils have received due attention as natural plant pest control compounds. in the present study, repellency effect of herbal plant ess...

Oil crops are one of the most valuable traded agricultural commodities and are probably worth over $100 billion/yr. The current volume of traded vegetable oils is over 70 Mt per year and is predicted to increased to over 100 Mt per year by the year 2010 (Murphy 1996). This is probably a considerable underestimate of the total volume of oil production since, particularly in developing countries,...

the two-spotted spider mite, tetranychus urticae koch, is a polyphagus pest which infests wide range of field, garden and greenhouse crops worldwide. pesticide applications against this pest have caused development of resistance, undesirable effects on non target organisms and environment and secondary pest outbreak. in recent years, herbal essential oils have received attention as natural plan...