نتایج جستجو برای: 1 and al2so43 at 800 mgl
تعداد نتایج: 17530373 فیلتر نتایج به سال:
چکیده کنه تارتن دو لکه ای tetranychus urticae koch یکی از چندخوارترین آفات شناخته شده محصولات کشاورزی دنیا به حساب می آید. در این بررسی جمعیت تخم و مراحل فعال این کنه در شرایط آلودگی طبیعی و مصنوعی در برگ های 8 رقم لوبیا در سال 1392 در گلخانه و مزرعه تحقیقاتی دانشکده کشاورزی دانشگاه ارومیه موردمطالعه قرار گرفت. آزمایش به صورت طرح کاملاً تصادفی برای شرایط مزرعه در10 تکرار و برای شرایط گلخانه ای...
The Moldavian dragonhead (Dracocephalum moldavica L., Lamiaceae) is an annual medicinal plant with beneficial nutritional sources that plays important roles in human and animal feed. Nanoparticles and cold atmospheric plasma increase biochemical compounds in plants. In this study, the effects of copper nanoparticles and cold atmospheric plasma on biochemical indices of the medicinal plant Draco...
previous studies have aimed at testing a hypothesis but the present study is data-first research in which researcher tries to form a theory from data rather than the use of data to test a hypothesis. this study aims at exploring teachers perceptions of the strengths and weaknesses of the current syllabus for college preparatory course. eight experienced teachers were selected to collect data du...
Compost tea has a lot of potential for sustainable agriculture. The suppressive effect compost on damping-off disease in beans (Phaseolus vulgaris), caused by Rhizoctonia solani, was investigated. physicochemical properties the tested showed presence dissolved solids (7070 mgL-1), organic matter (1280 nitrate (3840 and ammonium (90.0 mgL-1). concentrations phosphorus, potassium, calcium, magnes...
Effect of nanosilver particles was studied on the hatchability of rainbow trout (Oncorhynchus mykiss) egg and survival of the produced larvae at about 12ºC. In the first experiment the water-based nanosilver particles was used at concentrations of 0.5, 1, 2 and 4 mgL-1 for 30 minutes per day starting 24 hour post egg incubation until the hatching time. The mean percentage of hatchability reach...
Stevia rebaudiana Bert (Asteraceae) is herbaceous plant with sweet leaves, which are the source of sweetener products. The present study focuses on effects of different combination of plant growth regulators on callus induction, callus cell growth and regeneration and volatile constituents from callus of stevia in tissue culture condition. The results of present study showed callus formation p...
Stevia rebaudiana Bert (Asteraceae) is herbaceous plant with sweet leaves, which are the source of sweetener products. The present study focuses on effects of different combination of plant growth regulators on callus induction, callus cell growth and regeneration and volatile constituents from callus of stevia in tissue culture condition. The results of present study showed callus formation p...
orchids are one of the most popular plants in the world and among them phalaenopsis genus have the most sales in a global market. because of its hard propagation, micropropagation technique has been employed recently. in this study, we tried to find out useful protocol for commercial production through in vitro culture. at first, for seed capsules production, flowers were pollinated with hand i...
A sensitive, fast, low-cost and simple determination method was developed for the of nicotine in smokeless tobacco (Maras powder) using liquid chromatography-electrospray ionization tandem mass spectrometry. With method, amount Maras powder ashy determined confirmed. Chromatographic separation performed on a Hypersil Gold (2.1 mmx200 mm, 1.9 um) at 30 ◦C with gradient 0.2% acetic acid water ace...
Sesame (Sesamumindicum L.) as an ancient plant has traditionally used for centuries as a medicinal plant due to its natural antioxidants and plenty of medicinal properties. Seeds from different cultivars of sesame have various nutritional values and different genotypes showing different response to mature shoot buds meristems. In present experiment callus induction and plant regeneration of ses...
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