the cypress tree mealybug, planococcus vovae (nasonov) (hem., pseudococcidae) is one of the most important pests of cypress trees, especially cupressus semprevirens fastigiata l. in iran. a survey was carried out to determine the natural enemies of cypress tree mea-lybug in tehran province, during 2004-2005. as a result of this study, 17 species of preda-tors, parasitoids and hyperparasitoids b...

Quarantine measures to prevent insect invasions tend to focus on well-known pests but a large proportion of the recent invaders were not known to cause significant damage in their native range, or were not even known to science before their introduction. A novel method is proposed to detect new potential pests of woody plants in their region of origin before they are introduced to a new contine...

A new species of conifer was recently discovered in northern Vietnam. In a preliminary phylogenetic analysis of morphological data a possible sister species, Chamaecyparis nootkatensis (D. Don) Spach, was identified; however, because of the presumed phylogenetic remoteness of these two species to the remainder of the Cupressaceae, a new genus-Xanthocyparis-was described to accommodate both spec...

Cupressus sempervirence var. horzontalis belong to the Cupressus family. This species is evergreen and grows within an elevation range of 290 meters and 1200 meters above sea level in the North of Iran. The extraction of texture features from high-resolution remote sensing imagery provides a complementary source of data for those applications in which the spectral information is not sufficient ...

Exotic tree plantations have been considered as a management strategy for the rehabilitation of indigenous tree communities in situations that require human intervention to assure forest ecosystem rehabilitation. This study evaluated the value of pine Pinus caribaea and Pinus patula and cypress Cupressus lusitanica plantations as a means o f permitting indigenous trees to become established on ...

the effect of soxhlet and simple immersion extraction methods on the amount and type of bioactive phenolic compounds of c. arizonica woodknots were studied. lipophilic and hydrophilic compounds were soxhlet extracted according to t280 pm-99 standard method with hexane and acetone solvents, respectively.  also, in the immersion method woodknot samples were dipped in hexane to remove the lipophil...

BACKGROUND Use of antioxidants is a means of reducing rancidity of fats and oils in food stuffs. The commercial synthetic antioxidants in food industry have been suspected to cause negative health effects. Therefore as alternatives, there is a strong need in finding new effective and safe antioxidants from natural sources to prevent deterioration of foods, drugs and cosmetics. OBJECTIVES IN O...