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...

Organic fertilization improves soil fertility and ameliorates the deleterious effects of accumulated salts in for sustainable agricultural production. This research was carried out on thirteen-year-old Mexican lime trees to study effect humic acid (HA), applied as (10, 20 or 30 mL·tree−1) foliar (0.1 0.2%) applications, fertility, tree growth, productivity fruit quality. The experiment conducte...

Abstract The experiment was conducted in the nursery of Diyala Agriculture Directorate during growing seasons 2021 from March to November study effect growth promoters Humic acid, Atonic and Salicylic acid spray on some chemical vegetative parameters Local bloody orange transplants budded sour rootstock. included two factors, first one cultivars (Local bloody), second promoters(Humic acid). spr...

Atriplex halimus (L.) is a xero-halophyte shrub adapted to extreme drought and salinity stresses. Ability of local A. halimus to tolerate salinity stress was investigated. Two-month-old A. halimus plants were exposed to salt stress (0, 150, 300 and 600 mM NaCl) in properly aerated liquid medium. Differential gene expression of stressed plants was investigated using real-time PCR analysis. Furth...

The paperaim of the was to study the effect of low temperature stress on Avena nuda L. seedlings. Cold stress leads to many changes of physiological indices, such as membrane permeability, free proline content, malondialdehyde (MDA) content, and chlorophyll content. Cold stress also leads to changes of some protected enzymes such as peroxidase (POD), superoxide dismutase (SOD), and catalase (CA...

the adsorption thermodynamic characteristic of cu2+ from aqueous solution onto humin andalso humic acid from a typical black soil in northeast china were examined at three different temperatures(298, 318 and 338 k) by batch isotherm experiments. results showed that humin was structurally differentfrom humic acid. the increase of temperature had a positive effect on the adsorption process. freun...

introduction drought stress is one of the most yield reduction factor of lima bean where effects on the more than 60% of bean world production. in this regard, solutions that help increase productivity with high water efficiency in this region can change the agricultural crop production. one of the solutions is using organic materials (acid humic). humic acid with linkage of water molecules and...

to evaluate the response of wheat to drought stress and salicylic acid, this field experiment was carried out at the experimental farm of college of agriculture, university of shahid bahonar kerman, iran in 2011-2012, in a split-plot arrangement using completely randomized block design with four replications. main plot was irrigation (normal irrigation and cut off at flowering) and sub plot was...