نتایج جستجو برای: fertilizers and micro nutrients

تعداد نتایج: 16852989  

Journal: :Environmental pollution 2013
Richard O Carey George J Hochmuth Christopher J Martinez Treavor H Boyer Michael D Dukes Gurpal S Toor John L Cisar

This literature review focuses on the prevalence of nitrogen and phosphorus in urban environments and the complex relationships between land use and water quality. Extensive research in urban watersheds has broadened our knowledge about point and non-point pollutant sources, but the fate of nutrients is not completely understood. For example, it is not known how long-term nutrient cycling proce...

Journal: :Molecules 2012
Siti Aishah Hassan Salumiah Mijin Umi Kalsom Yusoff Phebe Ding Puteri Edaroyati Megat Wahab

The source and quantity of nutrients available to plants can affect the quality of leafy herbs. A study was conducted to compare quality of Cosmos caudatus in response to rates of organic and mineral-based fertilizers. Organic based fertilizer GOBI (8% N:8% P₂O₅:8% K₂O) and inorganic fertilizer (15% N, 15% P₂O₅, 15% K₂O) were evaluated based on N element rates at 0, 30, 60, 90, 120 kg h⁻¹. Appl...

2011
S. Zandi

Abstract: Soil pH has a major effect on plant nutrient availability by controlling the chemical structure of the nutrient. Adjusting soil acidity or alkalinity improves soil nutrition without adding extra fertilizers. Soil nutrients needed by plants in the largest amount are referred to as macronutrients. In addition to macronutrients, plants also need trace nutrients and both macro and trace n...

2000
Anne Jones-Lee Fred Lee

There is a resurgence of interest in controlling the excessive fertilization (eutrophication) of surface waters in order to protect domestic water supplies and other beneficial uses of waters from impairment (pollution) by excessive growths of algae or other aquatic plants whose growth is stimulated by nitrogen and phosphorus. An area of particular concern is the nutrients added to waterbodies ...

Journal: :global journal of environmental science and management 2016
a.r. karbassi s. tajziehchi n. farhang adib

estuaries are well known for their potential in removing metal from fresh water to provide micro-nutrients to aquatic life. in the present investigation, we have tried to bring out the metal removal potential of estuaries during accidental spills. for this purpose artificial river water containing high concentration of mn, cu, zn, ni and pb were mixed with sea water at different salinity regime...

2013
C. N. Mbah

In sustainable agricultural systems, recycling of nutrients is a major component of nutrient management. We conducted an experiment in Abakaliki South Eastern Nigeria in 2007 to investigate the effects of organic amendments (poultry droppings (PD), burnt rice husk dust, (BRHD), Unburnt rice husk dust (UBRHD) and inorganic fertilizer (NPK) on soil properties and their residual effect tested in 2...

Journal: :پژوهش های تولید گیاهی 0
مصطفی حیدری دانشیار گروه زراعت و اصلاح نباتات، دانشگاه صنعتی شاهرود الهام جعفرپور دانشجوی کارشناسی ارشد باغبانی، دانشگاه زابل

introduction and aim: sennai (cassia angustifolia vahl) is one of the valuable plants which used to constipation treatment. production of organic plants is one of the goals of medicinal plant production, this is possible with the application of bio-fertilizers. in the past decades due to the use of chemical fertilizers numerous environmental impacts, including soil and water pollution problems ...

Journal: :journal of chemical health risks 0
hamidreza boostani college of agriculture and natural resources, shiraz university, darab, iran alireza mahmoodi college of agriculture and natural resources, shiraz university, darab, iran esmaiel farrokhnejad college of agriculture and natural resources, shiraz university, darab, iran

the essential nutrients in the pharmacological plants play a significant role in the remedy of illnesses but, these elements at high levels; can also be dangerous and toxic. the aim of this study was to determine the concentration of macro (mg, ca, p, and k) and micro (cu, zn, fe and mn) essential elements in seven indigenous pharmacological plants growing in fars province, southern iran. they ...

Journal: :IOP conference series 2021

Abstract Agricultural waste can be converted onto useful materials like compost or organic fertilizers. In a simply practice, those wastes were kept and mixed with additional composting to enrich the fertilizer nutrients compositions. Generally, plants growth optimally in sufficient media, that is soil. It requires adequate micro macro phosphorus (P). order determine P content other nutrient pr...

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