نتایج جستجو برای: nitrogen and phosphorous
تعداد نتایج: 16845547 فیلتر نتایج به سال:
This study quantified the theoretical minimum energy required to recover fertilizer products from different environmental waste streams.
This experiment target measuring soil properties (pH, EC and OC), nutrient (N, P, K S) the correlation study between availability. Six different locations in Havalbag block, Almora district of Uttarakhand, were sampled for (0-15cm depth). Nitrogen, Phosphorous, Potassium Sulphur examined using known conventional methods. Available Nitrogen was by alkaline KMnO4 method, extractable available CaC...
this study was performed for evaluation of the qualitative traits of safflower (carthamus tinctorius l.) as affected by azotobacter and mycorrhizal symbiosis (host plant root symbiosis with the glomus fungi) as factorial experiment based on randomized complete block design with three replications in research farm of college of arak islamic azad university during growing season of 2011-2012. tre...
This study was carried out to determine the effects of acetic acid, hot water, and cold sand stratification scarification at different periods on seed germination carob (Ceratonia siliqua L.) in Salah Alden province. The seeds were collected from Kirkuk province area September 2016. Carob stratified not treated by soaking glacial acid for 20, 40, 60, 120 min. lab temperature (25oC). Hot water (...
A longstanding puzzle in isotope studies of C3 plant species is that heterotrophic plant organs (e.g., stems, roots, seeds, and fruits) tend to be enriched in C compared to the autotrophic organ (leaves) that provides them with photosynthate. Our inability to explain this puzzle suggests key deficiencies in understanding post-photosynthetic metabolic processes. It also limits the effectiveness ...
Traditional models of chemostat systems looking at interactions between predator, prey and nutrients have used only a single currency, such as energy or nitrogen. In reality, growth of autotrophs and heterotrophs may be limited by various elements, e.g. carbon, nitrogen, phosphorous or iron. In this study we develop a dynamic energy budget model chemostat which has both carbon and nitrogen as c...
Elevated arsenic content in food crops pose a serious human health risk. Apart from rice wheat being another main food crop is possibly cultivated on contaminated sites. But for wheat uptake mechanisms are not entirely understood especially with regard to nutrient fertilization and different moisture regimes taking into account heavy rainfall events due to climate change. Here we show that espe...
Nitrogen and phosphorous are critical determinants of plant growth and productivity, and both plant growth and root morphology are important parameters for evaluating the effects of supplied nutrients. Previous work has shown that the growth of Acer mono seedlings is retarded under nursery conditions; we applied different levels of N (0, 5, 10, and 15 g plant-1) and P (0, 4, 6 and 8 g plant-1) ...
the effects of an azotobacter chrococum isolate (strain ag11) and vermicompost and their combined effects on a rain-fed winter wheat (var. zagros) nutrient uptake and growth and soil water content were investigated with a farm trial. the dry matter yield was determined in 5 occasions. gravimetric soil water content, soil microbial respiration and the number of azotobacter were determined at sa...
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