نتایج جستجو برای: humic acid has
تعداد نتایج: 3212141 فیلتر نتایج به سال:
to study the effect of foliar application of humic acid on morpho-physiological traits, nutrients uptake and postharvest vase life of cut marigold, an experiment was conducted with five levels of humic acid (0, 250, 500, 750 and 1000 ppm) based on completely randomized design with three replications. based on the results, in compared with control, leaf number and leaf area, total phenol and aer...
effect of foliar spraying by humic acid on mineral leaf composition, yield and fruit quality of apple (malus domestica l. cv. ‘granny smith’) was studied. an experiment based on randomized complete design was conducted in khorramdare city of zanjan province. spraying of humic acid was conducted in four levels 0, 5, 10 and 15 mg/l on eight year-old ‘granny smith’ apples grafted on mm106 rootstoc...
photocatalytic membranes exhibit great potential for water treatment since they combine the filtration and photo degradation in a single unit. although blending photocatalytic nanoparticles into polymeric thin film remains the simplest method to prepare the photocatalytic membrane, the entrapped photocatalyst showed less catalytic activity due to the agglomeration and shielding effects in the p...
Culture medium and nutrition are two important factors in determining the quantity and quality of greenhouse products. Accordingly, a factorial experiment was conducted based on completely randomized design on strawberry (cv. Aromas) in the greenhouse of Department of Horticulture, University of Kurdistan, Sanandaj, Iran. The first factor was two culture media (mixture of perlite and cocopeat w...
Humic substances are the most important organic fractions in soils and have affinity towards trace metals. In order to evaluate the effect of humic acid on zinc (Zn) sorption and desorption by soil, a batch experiment was conducted with two soil samples which were different in clay and calcium carbonate contents. Three levels of humic acid (0, 200, 500 mg/L) and various Zn concentrations (0 t...
To investigate the effects of irrigation intervals and humic acid application on some phophysiological and biochemical of thyme (Thymus vulgaris), the experimental in the form of factorial in the design complete randomized block in four replications at Miandoab University Research Field in 2019. Experimental treatments were at four levels of irrigation intervals (once every three days, once eve...
Humic acids are generally defined operationally as those decomposir tion products of plants and animals that comprise the base-soluble, 2 acidand alcohol-insoluble fractions of the soil. These materials are of interest because of their geological significance, possible nutritive properties, involvement of biological processes, and the challenge 3 afforded by their chemical and structural comple...
The study was carried out to evaluate the effects of soil application of humic acid and calciumon morpho-physiological traits and Na+, Mg2+, Ca2+ uptake of Pistachio seedling (Akbari) grown under salt stress. A completely randomized design was used with four replications in greenhouse conditions. The experimental treatment consisted of four levels of humic acid (Bis humic) (0, 4, 8 and 12 gr k...
The interactions between earthworms and microorganisms can produce significant quantities of plant growth hormones and humic acids which act as plant regulators. Experiments were designed to evaluate the effects of humic acids extracted from vermicompost and compare them with the action of commercial humic acid in combination with a commercial plant growth hormone, indole acetic acid (IAA) whic...
In order to increase the quality of agricultural products and improve healthy food production systems, application of organic fertilizers has become very important in agroecosystems. To investigate the effect of different concentrations and time of humic acid foliar application on the qualitative characteristics and shoot and grain micronutrients content of Triticale, an experiment was conducte...
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