the algal flora of five stations from paddy-fields of golestan province was investigated between october 2006 and september 2007. eight filamentous heterocystous nostocacean are recorded here for the first time from paddy fields of iran: cylindrospermum licheniforme, cylindrospermum stangnale, cylindrospermopsis raciborskii, calothrix ghosei, gloeotrichia longiarticulata, aulosira implexa var. ...

pricing policies play an important role in water demand management and its optimal allocation. determining proper water price leads to optimal allocation of water especially in agricultural consumptions. applying new subsidy targeting law in iran which insists on pricing water based on its supply cost, will effects considerably on water resource management in agriculture sector. so, in this stu...

the main objective of this study was to reveal the impact of nine climate indices on temperature changes and climate oscillations in golestan province along the southern coast of the caspian sea. climate indices data from across the atlantic-eurasian sector were collected from the ncep/ncar, the climate prediction centre (cpc) and the climatic research unit (cru) over a period of 40 years (1971...

In order to identify the species of Helicotylenchus Steiner, 1945 present in Iran, 497 soil and root samples were collected from the rhizosphere of different plants and localities throughout the country during 2009-2010. A new and several known species of Helicotylenchus were identified from the collected material. H. persiaensis sp. n. is characterized by its short tail (8-11 µm , c = 54.2-79....

southern margin of the caspian sea due to keeping of domestic animals and abundance of surface water reservoirs is prone to infection with leptospira sp.. this study was performed to determine anti-leptospira antibody frequency in golestan province, southeast of the caspian sea in the north of iran. this study was performed on 1028 people in golestan province. sampling was stratified. leptospir...

infection status of soybean field to tobacco ringspot virus (trsv) in golestan provincein order to serological detection of tobacco ringspot virus in soybean fields of golestan province, during 2008 growing season, infected samples of dpx, gorgan3, williams, pershing and jk cultivars with leaf malformation, stunting, necrosis and terminal bud blight symptoms, were collected and tested by enzyme...

the assessment of the quantitative and qualitative changes, the result of the impacts imposed by natural factors, and human interventions during specific sampling periods has a substantial influence on nature, management method and tending operation of every region’s forests. the present research was carried out in golestan province forests (iran) over an 11- year period and the obtained statis...

BACKGROUND & OBJECTIVES Leishmaniasis is an endemic parasitic disease reported sporadically throughout Iran. Golestan province is one of the 17 zoonotic cutaneous leishmaniasis (ZCL) foci. In this study, ecoepidemiological characteristics of ZCL were investigated in Gonbad-e Kavus County, Golestan province of Iran. METHODS This cross-sectional study was carried out in three endemic villages a...