نتایج جستجو برای: fertilizer and urea formaldehyde slow
تعداد نتایج: 16845333 فیلتر نتایج به سال:
Improvements in nitrogen (N) use efficiency reduce stress on the environment and improve tomato production. A two-year trial was conducted greenhouse tomatoes with a split-plot design, which one factor N application rate (150 kg·ha?1, N1; 200 N2; 250 N3) two other factors were type of urea applied (urea, T1; slow-release (polymer-coated) urea, T2, nitrification inhibitors (3,4-dimethylpyrazole ...
Nowadays formaldehyde is used as raw material in many industries. It has also disinfection applications in some public places. Due to its toxicity for microorganisms, chemical or anaerobic biological methods are applied for treating wastewater containing formaldehyde.In this research, formaldehyde removal efficiencies of aerobic biological treatment systems including moving bed biofilm (MMBR) a...
Application of organic manure in organic farming and long-term mineralization may lead to residual effects on the succeeding crop. So, residual effects of combined cattle manure and urea fertilizer of previous crop (black cumin) on growth and yield of pea were examined in a randomized complete block design. Treatments included of cattle manure (CM), urea (U), three ratios of CM+U full dose app...
in order to evaluate the effect of water deficit and different fertilizer levels on yield and some agro-morphological characteristics of moldavian balm, a split plot experiment was conducted in a randomized complete block design with three replications at the research farm of shahrekord university during 2013-2014 growing season. main factor was three levels of irrigation regimes including: 100...
production of onion all thruough the year particularly in semi tropical regions has been considered as an alternative to fulfil the local markets needs. in order to determine the best amount and method of urea fertilizer application so that to have higher yeild and lower amount of nitrate content the effects of seven levels of urea fertilizer including 0, 90, 180, 270, 360, 450 and 540 kg of ni...
Chemical precipitation is a suitable method for the recovery and removal of ammonium in water and a fertilizer known as MAP (magnesium ammonium phosphate; MgNH4PO4.6H2O; struvite) is obtained. Additionally, the advantage of this method is that environmental conditions do not have any effect compared to biological methods. In this study, the recovery of ammonium (Cmean=348 mg NH4 /L ± 38.1; n=25...
The reinforcing impact of Lignocellulosic micro and nanofibrillated cellulose (L-MNFCs) obtained from Eucalyptus Globulus bark in Urea-Formaldehyde UF adhesive was tested. L-MNFCs were prepared by an environmentally friendly, low-cost process using a combination involving steam explosion followed refining ultra-fine grinding. Obtained showed web-like morphology with some aggregates lignin nanod...
Urea-formaldehyde is one of the commonly used resin types in particleboard industry. In this study, effect nanofibrillated cellulose (NFC) and titanium dioxide (TiO2) addition formulation urea formaldehyde on physical, mechanical, morphological properties samples was investigated. The NFC (0.5% 1%) TiO2 (0.5%, 1%, 2%) were added to 10% adhesive formulation. Two different pressure times, 4 8 min...
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