نتایج جستجو برای: nitrogen fertiliser placement
تعداد نتایج: 194745 فیلتر نتایج به سال:
Nitrogen-Use Efficiency in Maize (Zea mays L.) on Fluvisol Soils in Afgoi District, Southern Somalia
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.)...
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% ...
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...
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...
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...
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...
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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