scholarly journals Communicating the Risks and Benefits of Human Urine-Derived Fertilizer

2020 ◽  
Vol 12 (23) ◽  
pp. 9973
Author(s):  
Alex Segrè Cohen ◽  
Nancy G. Love ◽  
Joseph Árvai
Keyword(s):  
Risk Communication ◽  
Human Urine ◽  
Communication Strategies ◽  
Consumer Acceptance ◽  
Public Acceptance ◽  
Global Challenge ◽  
Urine Diversion ◽  
Phosphorus And Potassium ◽  
Nitrogen Phosphorus

Ensuring long-term access to nutrients needed for food production is a growing global challenge. Human urine diversion and recycling is a viable and energy-efficient means of recovering nitrogen, phosphorus, and potassium from wastewater. Before implementation, however, it is critical to understand how communicating differently about human urine-derived fertilizer may influence its public acceptance. This study tests how different strategies of communication (video compared to texts), as well as different amounts of information, impact public acceptance. We also explored how specific characteristics, such as age and education level, may impact the usefulness of the different strategies of communication. The results indicate that short and long videos are the most useful risk communication strategies, and age fully moderates this relationship. This research may serve as a jumping off point for future studies focused on how risk communication strategies may affect consumer acceptance of other emerging food technologies.

scholarly journals Contents of macronutrients and growth of ‘BRS Marataoã’ cowpea fertigated with yellow water and cassava wastewater

2019 ◽  
Vol 14 (3) ◽  
pp. 1 ◽  
Author(s):  
Narcísio Cabral de Araújo ◽  
Vera Lucia Antunes Lima ◽  
Jailton Garcia Ramos ◽  
Elysson Marcks Gonçalves Andrade ◽  
Geovani Soares de Lima ◽  
...  
Keyword(s):  
Human Urine ◽  
Dry Matter ◽  
Mineral Fertilizers ◽  
Fresh Matter ◽  
Number Of Leaves ◽  
Phosphorus And Potassium ◽  
Set Up ◽  
Cassava Wastewater ◽  
Nitrogen Phosphorus ◽  
Reduction Of Costs

Agricultural utilization of yellow waters associated with cassava wastewater is a sustainable technique, since it allows reduction of costs related to acquisition of industrialized fertilizers and minimizes the environmental pollution caused by the inadequate disposal of these effluents. In this context, this study evaluated the macronutrient macronutrient content and growth of cowpea fertigated with yellow water associated with cassava wastewater and NPK as source of nutrients. The experiment was set up in a greenhouse located at Campus I of the Federal University of Campina Grande. The experimental design was completely randomized, composed of five treatments characterized by: fertigation with mineral fertilizers, in the form of NPK; organic fertigation composed of human urine, cassava wastewater, human urine plus cassava wastewater; and organo-mineral fertigation composed of urine, cassava wastewater and mineral phosphorus, with four replicates. At 36 days after sowing, the following parameters were determined: contents of nitrogen, phosphorus, potassium, sulfur and the variables number of leaves, plant height, stem diameter, leaf area, shoot fresh matter and shoot dry matter. The use of yellow waters promotes significant increases for growth and production variables for nitrogen and potassium contents mainly, as well as for growth and production variables. The contents of nitrogen, phosphorus and potassium were higher than the levels considered as adequate for the cowpea crop. The use of human urine and cassava wastewater have potential to meet the needs for the main macronutrients required by cowpea and the irrigation via fertigation with these biofertilizers positively influences the development of cowpea.

Fertilizer responses with non-irrigated Shiraz grapevines, 1944-1966

1970 ◽  
Vol 21 (2) ◽  
pp. 243 ◽  
Author(s):  
HW Tulloch ◽  
WB Harris
Keyword(s):  
South Australia ◽  
Growth And Yield ◽  
Yield Response ◽  
Positive Interaction ◽  
Severe Reduction ◽  
Factorial Trial ◽  
Phosphorus And Potassium ◽  
One Year ◽  
Nitrogen Phosphorus

A long-term factorial trial with nitrogen, phosphorus, and potassium fertilizers was started at Nuriootpa Viticultural Station, South Australia on the grape cultivar Shiraz in 1944. Results show a significant yield response to superphosphate. Long-term applications of ammonium sulphate resulted in severe reduction of vine growth and yield, and a significant lowering of soil pH. No direct response to potassium sulphate was obtained except in one year, but a positive interaction between potassium and phosphorus occurred in some years. An analysis of the components of yield in 1964 showed that the increase in yield with superphosphate was due to an increase in the number of berries per bunch. The nitrogen, phosphorus, and potassium contents of petioles were determined and related to available reference standards.

Nitrogen recovery from source-separated human urine using clinoptilolite and preliminary results of its use as fertilizer

2011 ◽  
Vol 63 (4) ◽  
pp. 811-817 ◽  
Author(s):  
B. Beler-Baykal ◽  
A. D. Allar ◽  
S. Bayram
Keyword(s):  
Human Urine ◽  
Natural Zeolite ◽  
Agricultural Landscape ◽  
Landscape Plant ◽  
Predominant Form ◽  
Results Reporting ◽  
Phosphorus And Potassium ◽  
Indirect Route ◽  
Nitrogen Phosphorus

The use of source separated human urine as fertilizer is one of the major suggestions of the new sanitation concept ECOSAN. Urine is rich in nitrogen, phosphorus and potassium which act as plant nutrients, however its salinity is high for agricultural and landscape purposes. Moreover, characteristics change significantly throughout storage where salinity increases to higher values as the predominant form of nitrogen shifts from urea to ammonium. Transferring nitrogen in human urine onto the natural zeolite clinoptilolite and using the subsequently recovered ammonium from the exhausted clinoptilolite for agricultural/landscape purposes is suggested as an indirect route of using urine in this work. Results reporting the outcome of the proposed process together with characterization of fresh and stored urine, and preliminary work on the application of the product on the landscape plant Ficus elastica are presented. Up to 97% of the ammonium in stored urine could be transferred onto clinoptilolite through ion exchange and about 88% could be recovered subsequently from exhausted clinoptilolite, giving an overall recovery of 86%. Another important merit of the suggested process was the successful elimination of salinity. Preliminary experiments with Ficus elastica had shown that the product, i.e. clinoptilolite exhausted with ammonium, was compatible with the synthetic fertilizer tested.

scholarly journals Nitrified Human Urine as a Sustainable and Socially Acceptable Fertilizer: An Analysis of Consumer Acceptance in Msunduzi, South Africa

2019 ◽  
Vol 11 (9) ◽  
pp. 2456 ◽  
Author(s):  
Benjamin C. Wilde ◽  
Eva Lieberherr ◽  
Andrew E. Okem ◽  
Johan Six
Keyword(s):  
South Africa ◽  
Human Urine ◽  
Consumer Acceptance ◽  
Smallholder Farming ◽  
Middle Income ◽  
Human Waste ◽  
Middle Income Countries ◽  
Kwazulu Natal ◽  
Nutrient Mining

Sustainable smallholder farming is contingent on fertilizer access. Soils across Africa are typically nutrient deficient, a condition exacerbated by long-term nutrient mining. Nitrified urine fertilizer is a nutrient-rich and hygienically safe solution derived from human urine. It has the potential to provide a sustainable source of soil nutrients to low and middle-income countries struggling with food insecurity challenges. This study presents findings of a survey that assessed public acceptance within Msunduzi, Kwazulu-Natal, South Africa towards the use of nitrified urine fertilizer. Results indicate that in general attitudes were much more positive towards the use of nitrified urine fertilizer than raw urine as a soil amendment. Residents living within rural zones of the municipality (78.5%), as opposed to urban (65.7%) and peri-urban (65.2%), and younger individuals within the sampled population were found to be the most receptive to the use of nitrified urine fertilizer. Our findings also underscore the complex set of factors that shape attitudes towards a topic such as the use of human waste as a fertilizer, which are crucial in shaping the legitimacy of an emerging technology such as urine nitrification.

The fate of 15N-nitrate in a northern peatland impacted by long term experimental nitrogen, phosphorus and potassium fertilization

2010 ◽  
Vol 103 (1-3) ◽  
pp. 281-296 ◽  
Author(s):  
Yangping Xing ◽  
Jill Bubier ◽  
Tim Moore ◽  
Meaghan Murphy ◽  
Nathan Basiliko ◽  
...  
Keyword(s):  
Potassium Fertilization ◽  
Phosphorus And Potassium ◽  
Nitrogen Phosphorus
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