نتایج جستجو برای: nitrogen fertiliser placement

تعداد نتایج: 194745  

Journal: :Asian Journal of Research in Crop Science 2022

In this study, an experiment was conducted to determine the best rate of nitrogen fertilization on maize grain yields and interaction levels application methods growth yield maize.
 For purpose, designed in experimental farm Somali Ministry Agriculture, Afgoi, Lower Shabelle, Somalia 2017 spring autumn. The treatments consisted eight rates (0 kg N ha-1; 25 50 75 100 125 150 ha-1 175 ha-1.)...

2011
S. Domingos M. Germain S. Dallas G. Ho

The efficiency in nitrogen removal from wastewater generated at CSBP Ltd fertiliser and chemical manufacturer by two hybrid constructed wetland mesocosms was compared. The mesocosms were set up in order to help clarify the reasons why the two year old constructed wetland located at the industrial facility, a 1.2 ha free water surface/vertical flow conjugated system, has performed under the 50% ...

Journal: :avicenna journal of dental research 0
masoumeh khoshhal department of periodontics, school of dentistry, hamadan university of medical sciences, hamadan, ir iranسازمان اصلی تایید شده: دانشگاه علوم پزشکی همدان (hamadan university of medical sciences) fariborz vafaei department of prosthodontics, school of dentistry, hamadan university of medical sciences, hamadan, ir iranسازمان اصلی تایید شده: دانشگاه علوم پزشکی همدان (hamadan university of medical sciences) banafsheh poormoradi department of periodontics, school of dentistry, hamadan university of medical sciences, hamadan, ir iran; department of periodontics, school of dentistry, hamadan university of medical sciences, hamadan, ir iran. tel: +98-9188124251, fax: +98-8138381085سازمان اصلی تایید شده: دانشگاه علوم پزشکی همدان (hamadan university of medical sciences) janet moradi haghgoo department of periodontics, school of dentistry, hamadan university of medical sciences, hamadan, ir iranسازمان اصلی تایید شده: دانشگاه علوم پزشکی همدان (hamadan university of medical sciences) faezeh behgozin dentist, hamadan, ir iran neda amiri dentist, hamadan, ir iran

results the mean distances between the crestal bone and the implant shoulder in group 1 were 1.01, 1.44, and 1.93 mm at the implant placement time, and at the 6 and 12-month postoperative intervals, respectively. in group 2, these distances were 1.35, 1.20, and 1.41 mm, respectively. there were no significant differences in the marginal bone resorption between the two groups (p > 0.05). conclus...

2003
Ram C. Dalal Weijin Wang G. Philip Robertson William J. Parton

Increases in the concentrations of greenhouse gases, carbon dioxide (CO2), methane (CH4), nitrous oxide (N2O), and halocarbons in the atmosphere due to human activities are associated with global climate change. The concentration of N2O has increased by 16% since 1750. Although the atmospheric concentration of N2O is much smaller (314 ppb in 1998) than of CO2 (365 ppm), its global warming poten...

Journal: :Journal of environmental management 2003
J Primdahl B Peco J Schramek E Andersen J J Oñate

Agri-environmental schemes (AES) have been introduced as part of European Union's (EU) Common Agricultural Policy and are now an important part of this. A methodological approach to analyse the policy effects of AES is outlined, in which we distinguish between performance effects (on agricultural practices) and outcome effects (environmental impact). The performance effects are further approach...

2018
James Stephen Robinson Karen Baumann Yongfeng Hu Philipp Hagemann Lutz Kebelmann Peter Leinweber

Strategies are needed to increase the sustainability of phosphorus (P) fertiliser management in agriculture. This paper reports on the potential of pyrolysis treatment to recycle P from renewable materials previously regarded as wastes. The study used K-edge X-ray absorption near-edge structure (XANES) spectroscopy to examine chemical forms of P in the waste feedstock materials and correspondin...

2015
Rosanna Kleemann Jonathan Chenoweth Roland Clift Pete Pearce Devendra Saroj

10 P recovery from wastewater treatment plants (WWTPs) as struvite fertiliser is a recognised method of 11 improving P use efficiency and reducing P losses into the environment. The main driver for P recovery from the 12 water industry viewpoint is the reduction in the nuisance of struvite clogging inside pumps and pipes. Struvite 13 recovery leads to an average P recovery rate of 72±7% from ce...

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