1.

Investigation of causal agents in decline and mortality of Arizona Cypress (Cupressus arizonica) in Qom

Pages 1-9
H. Khakdaman; A. Pourmeidani; S.A. Salari
2.

Resistance to Ophiostoma novo-ulmi in Ulmus carpinifolia var. umbraculifera, U. glabra and U. parvifolia

Pages 10-19
M.M. Iraqi; K. Rahnama; A. H. Taheri
3.

Oak cynipid gall wasps (Hym.: Cynipidae) and associated parasitoids on Persian oak, Quercus brantii in southern Zagros

Pages 20-28
S. R. Golestaneh; S. E. Sadeghii; E. Azizkhani; N. Farrar
4.

Life forms and chrotypes of unwanted weedy plants in the main parks of Tehran

Pages 29-41
S. S. Mirzadeh Vaghefi; M. Rajamand
5.

Germination and growth traits reflexes of five Bromus and Agropyron species to artificial inoculation by Fusarium avenaceum and F. graminearum

Pages 42-53
M. A. Alizadeh
6.

Tolerability of Populus deltoides 69/55 to poplar clearwing moth Paranthrene tabaniformis Rott (Lep: Sesiidae) damage in Mazandaran province

Pages 54-61
M. R. Babaee; S. Khorankeh; K. Spahbodi
7.

Comparative life history of woolly poplar aphid, Phloeomyzus passerinii, on various poplar clones

Pages 62-73
N. Rajabi Mazhar; S. Moharramipour; S.E. Sadeghi
8.

Identification of the causal agent of bacterial canker on hazelnut trees in Guilan province

Pages 74-78
Bita Ali; Mostafa Niknejad Kazempour; Seyed Ali Elahinia


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