up to now, interactions between method and amount of nitrogen fertilizers application on plant density and variety of wheat under sprinkler irrigation systems have not been studied. thus, this research was conducted during two years in esfehan region with split factorial design. the treatments of this experiment were: three fertilizers application methods (conventional manual application at the...

six cultivars of hexaploid wheat (hyrmand, shiraz, pishtaz, marvdasht, mahdavi, roshan ‎‎(susceptible check) and m-79-6) in subplots, and three seed treatments: i1 – seed without ‎treatment; i2- seeds artificially infected with bunt spores in 5/1000 ratio and i3- seeds treated ‎with carboxin thiram fs in main plots of a split plot trial within a rcbd with three ‎replications and 3 locations of ...

background : according to the national strategy plan on monitoring of insecticides resistance, this study was carried out to determine the base line susceptibility of the culicidae mosquitoes to the who-recommended insecticides in an endemic focus of malaria in southeastern iran. methods : larval collection was carried out by dipping method and adult collection occurred by suction tube from jan...

The susceptibility of Culex quinquefasciatus to chemical insecticides in two field sites in Kuala Lumpur was evaluated using the WHO standard susceptibility test. Less then 7days old female mosquitos, reared from wild caught females were exposed to discriminating dosages of insecticides at recommended exposure periods. The larval bioassay were conducted using the multiple concentrations and the...

The resistance/susceptible status of Aedes aegypti (field strain) from slum area of Misri Shah Lahore, Pakistan was determined during May 2009 to January 2011. Two insecticides i.e. deltamethrin 1.5% EC and cypermethrin 10% EC which were sprayed in various localities of Lahore from the last ten years were used to evaluate resistance/susceptible status of field collected adult females of Aedes a...

Two freshwater fishes, Rasbora sumatrana (Cyprinidae) and Poecilia reticulata (guppy) (Poeciliidae) were exposed for a four-day period in the laboratory condition to a range of copper (Cu) and cadmium (Cd) concentrations. Mortality was assessed and median lethal concentrations (LC50) were calculated. LC50 increased with decrease in mean exposure times for both metals. For R. sumatrana, LC50s fo...

‘Stevens’ cranberry (Vaccinium macrocarpon Ait.) terminal bud freezing stress resistance was assessed by nonlinear regression utilizing relative scoring of the post-thaw bud growth and development based on defi ned bud stages 2 weeks following controlled freezing tests. Bud stages tested were chosen based on a phenology profi le from each sampling date throughout the spring season. Previous yea...