Organomineral fertilisers: nutrient dynamics and evaluation of agronomic characteristics

Antille, D. L. and Sakrabani, R. and Godwin, R. J. (2009) Organomineral fertilisers: nutrient dynamics and evaluation of agronomic characteristics. In: American Society of Agricultural and Biological Engineers Annual International Meeting (ASABE 2009), 21-24 Jun 2009, Reno, NV. United States.

[img]
Preview
Text (Published Version)
Antille_Sakrabani_Godwin_ASABE2009_PV.pdf

Download (298Kb) | Preview

Abstract

Recycling of sewage sludge (biosolids) to agricultural land is regarded as the best practicable environmental option and currently represents the main disposal route in the UK. A novel method was developed by United Utilities-plc to produce organomineral fertilisers (OMFs) using biosolids. The purpose of this investigation was to identify the effects of the use of OMFs on winter wheat (Triticum aestivum L) and rye-grass (Lolium perenne L.) and validate the data reported in previous studies. Nitrogen and phosphorus release characteristics were also investigated under controlled laboratory conditions. Results indicated that grain yield (wheat) and dry matter production (rye-grass) were significantly increased (p<0.001) following application of OMFs and urea compared with the control (non-fertilised crop). Higher concentration of available N in the OMFs and urea resulted in significantly higher (p<0.001) grain yield and dry matter than the biosolid. Following fertiliser and biosolids application, the concentration of N in harvested plant material (rye-grass) was also significantly increased in the all treatments compared with the control (p<0.001). The MERNs (most economic rate of N) were calculated for wheat; these were 199.6; 189.7; and 223.5kg [N] ha -1 for urea, OMF 15, and OMF 10 respectively. Following application of OMFs and urea to the soil, the majority of the N (up to 80% of the total N applied) was found to be released in the first 30 days after application; thereafter, N-fertiliser was released at a rate comparable to the soil organic N. Total N in the soil was found to have significantly increased (p=0.002) compared with the control (non-fertilised soil) after two consecutives years of fertiliser application. This was more evident when the organic N content in the fertiliser material was increased in relation to the readily available N. Soil extractable P was not significantly (p=0.962) changed after two consecutive years of OMFs and biosolids application; however, a marginally larger increase in soil extractable P was observed when biosolids were used.


Statistics for USQ ePrint 25440
Statistics for this ePrint Item
Item Type: Conference or Workshop Item (Commonwealth Reporting Category E) (Paper)
Refereed: No
Item Status: Live Archive
Additional Information: © (2009) by American Society of Agricultural & Biological Engineers. For information about securing permission to reprint or reproduce a technical presentation, please contact ASABE at rutter@asabe.org or 269-932-7004 (2950 Niles Road, St. Joseph, MI 49085-9659 USA). Paper no. 095981
Faculty / Department / School: Historic - Faculty of Engineering and Surveying - Department of Agricultural, Civil and Environmental Engineering
Date Deposited: 08 Jul 2014 05:16
Last Modified: 08 Jul 2014 05:16
Uncontrolled Keywords: biosolids; MERN; N & P release characteristics; organomineral fertilisers; OMF; rye-grass; wheat
Fields of Research : 07 Agricultural and Veterinary Sciences > 0703 Crop and Pasture Production > 070306 Crop and Pasture Nutrition
09 Engineering > 0904 Chemical Engineering > 090410 Water Treatment Processes
07 Agricultural and Veterinary Sciences > 0799 Other Agricultural and Veterinary Sciences > 079902 Fertilisers and Agrochemicals (incl. Application)
Socio-Economic Objective: E Expanding Knowledge > 97 Expanding Knowledge > 970107 Expanding Knowledge in the Agricultural and Veterinary Sciences
Identification Number or DOI: doi:10.13031/2013.27018
URI: http://eprints.usq.edu.au/id/eprint/25440

Actions (login required)

View Item Archive Repository Staff Only