humic acid, which has hormone- like activity , not only enhances plant growth and nutrients uptake but also improve stress tolerance. to determine the effect of humic acid on the yield and vegetative characteristics of tomato an experiment was conducted with tomato cv. `isabela` in 2008 in a plastic tunnel at the agriculture faculty, guilan university using randomized completely design with fou...

existence of acid humic in water resources is undesirable and causes carcinogenic component in disinfection process due to reaction with chlorine. due to their cost-effectiveness and higher physical resistance than activated carbon, natural zeloites are used for removing various pollutants. . in the present study, iranian natural zeolite modified with cetylpyridinium bromide (cpb) was investiga...

to evaluate the effect of on-farm seed priming and methods of zinc sulfate application on seed emergence properties, yield and yield components of two corn cultivars, an experiment was conducted as factorial in randomized complete block design with three replications during 2012 at research farm of bu-ali sina university, hamedan. first factor was methods of zinc sulfate application containing ...

Nano-sized flower-like Ag/ZnO was synthesized by a simple method using zinc acetate and silver acetate under hydrothermal condition. Powder X-ray diffraction (PXRD) and transmission electron microscopy (TEM) were used to characterize the structure and morphology of the synthesized powder. Nano flower-like Ag/ZnO was used as a photocatalyst for degradation of humic acid in aqueous solution. The ...

an experiment was conducted in order to evaluate the effects of humic acid spraying on  grain yield and yield components of wheat, in agricultural research and natural resources center of tehran province, in 2010-11. a split-plot layout within randomized complete block design with three replications were used. main plots were three irrigation treatments contains of normal irrigation, non-irriga...