BACKGROUND Although infection of dromedary camels with Cryptosporidium spp. is rare in Iran, it is considered a zoonotic threat to the keepers and herders of camels. Thus we investigated the prevalence of Cryptosporidium in these two hosts in Yazd Province, a semi-arid region in center of Iran. METHODS This study was conducted during 4 seasons (winter 2008, summer 2009, winter 2009 and summer...

Topographically heterogeneous agricultural landscapes can complicate and accelerate agrochemical contamination of streams due to rapid transport of water and chemicals to poorly drained lower-landscape positions and shallow ground water. In the semiarid Palouse region, large parts of these landscapes have been tile drained to enhance crop yield. From 2000-2004 we monitored the discharge of a ti...

there are different materials and compounds in water that determine its chemical and physical quality. as the result of special conditions such as increase and decrease in discharge, water quality can vary. one of these conditions is drought that decreases discharge, and water quality changes. in this study, droughts of sistan and baluchistan province have been analyzed using standardized preci...

yazd province because of cultural and historical background of the distant past always had known as ambitious and hard-working people. manifesting multiple efforts of these people is seen in water harvesting. in yazd province, background issues such as evaluation and assessment of water, ownership and agricultural water share refers to the distant past which has been changes over time in type a...

agriculture sector is the main consumer of water in the world. in productive sectors likeagriculture, water is considered as a valuable mediatory commodity or production input.demand for agriculture water comes from consumers› (agriculture products›) behavior. thisstudy aims to evaluate water use optimality in pomegranate arbors at the charkhab village inthe yazd province. the data was randomly...

Salinity may strongly influence the interaction between plant roots and surrounding soil, but this has been poorly studied for sodium sulfate (Na2SO4). The aim of study was to investigate effect chloride (NaCl) Na2SO4 salinities on soil chemical properties as well rice physiological- yield-related parameters two contrasted cultivars (V14 (salt-sensitive) Pokkali (salt-resistant)). Pot experimen...

The Yazd-Ardakan basin in Central Iran has two separated aquifers. The shallow unconfined aquifer is supplies 40 Qanats. The deep saturated confined aquifer is the main water storage. Due to over-withdrawal, water table has been decreasing during last 25 years. Recent study shows that the shortage of the aquifer is about 16 meters and land subsidence is 0.5 1.2 meters. Long deep cracks are foun...

due to the lack of fresh water resources, the use of saline water for the production of plants such as wheat and kochia is inevitable. to sustain production, the effect of saline water on the plants and soil in each region must be studied. therefore in this paper, the effects of irrigation with saline water to produce plants such as wheat and kochia, as well as changes in the soil salinity prof...