نتایج جستجو برای: root colonization 888 percent and root height 6 and 11 percent
تعداد نتایج: 17034945 فیلتر نتایج به سال:
efl/esl textbooks have been regarded as essential language teaching materials with which the learners spend about 70 up to 90 percent of their class time. the important role they play and their vast use make them not only influential in learning the language but also in shaping values and attitudes. put it another way, textbooks socialize learners using their contents (i.e. texts, illustrations...
to study the root allelopathic effects of cool season crops on germination and early growth of three crops (sorghum, corn, and soybean), an experiment was conducted in seed research laboratory and greenhouse of college of agriculture, university of tehran. the experiment consisted of four cool season crops (wheat, barley, rye and pea) and control as the main plots, three spring-crops (corn, soy...
THE SYMBIOSIS EFFECT OF VESICULAR-ARBUSCULAR MYCORRHIZA ON GROWTH OF POA BULBOSA (BULBOS BLUE GRASS)
Inoculation experiments were carried out in pot culture to determine the effects of VA fungi on the growth of Poa bulbosa. In this experiment, four treatments were used: 1. Strile soil without inoculation, 2. Strile soil plus inoculum, 3. Natural soil plus inoculum, and 4. Natural soil without inoculation. Inoculum was prepared from a suspension of mycorrhizal roots of Poa plants (Root c...
abstract plant roots absorb water and minerals from soil solution. plant production is a function of root distribution and its activity in soil. by increasing root density in soil unit volume, roots absorb more water and minerals. this implies that knowledge of root development is an important factor for crop production. to determine the most suitable amount of water for the maximum development...
Drymaria cordata (L.) Willd. ex Roem. & Schult. commonly known as ‘West Indian Chick weed’ is a potential herb used in traditional medicine the treatment of many ailments. The main active principles therapeutically are drymaritin and isovitexin. Arbuscular mycorrhizae (AM) symbiotic associations between plants soil fungi that play vital role plant growth development well quality. In present...
the rationale behind the present study is that particular learning strategies produce more effective results when applied together. the present study tried to investigate the efficiency of the semantic-context strategy alone with a technique called, keyword method. to clarify the point, the current study seeked to find answer to the following question: are the keyword and semantic-context metho...
In this study 1250 patients who have been operated for lumber disc herniation during 10 years were analyzed. Seventy one percent of patients were male.with an average age of 37.2 +_ 0.9 years in which 61℅ had backache for many years ( average 3.5 +_ 2.1 year) before experiencing root pain, and in 54℅ of them backache started following a heavy weight lifting or heavy job. 29℅ of patients were f...
This research was carried out to evaluate the effect of two mycorrhiza species on growth, yield and oil content of geranium under salinity stress. The experiment was done at research greenhouse of Faculty of Agriculture, Lorestan University, Iran, in 2014. Four levels of substrate (sterilised and non-sterilised control soil and sterilised soil inoculated with Glomus mosseae or G. intraradices),...
In order to evaluate the effect of trinexapac ethyl concentrations (0, 250 and 500 g/h) and traffic stress (traffic and non traffic) treatments on wheat grass physiological and morphological traits, an experiment was conducted on research farm of Isfahan University of Technology in 2011 - 2012 as factorial in completely randomized designs with three replications. The studied traits involved pla...
The aim of this study was to describe an interdisciplinary approach for endodontic therapy of behavior-challenging children and to report the efficacy of sedation techniques for these procedures. Sedation records of thirty-two patients who received root canal treatment were reviewed. Age at treatment in months, gender, year of treatment, tooth type, status of root maturation (open or closed ape...
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