Organomineral fertilisers: nitrogen dynamics and evaluation of agronomic characteristics

Antille, D. L. and Sakrabani, R. and Godwin, R. J. (2008) Organomineral fertilisers: nitrogen dynamics and evaluation of agronomic characteristics. In: American Society of Agricultural and Biological Engineers Annual International Meeting (ASABE 2008), 29 Jun-2 Jul 2008, Providence, RI. United States.

[img]
Preview
Text (Published Version)
Antille_Sakrabani_Godwin_ASABE2008_PV.pdf

Download (253Kb) | Preview

Abstract

The production of sewage-sludge in the UK is set to increase due to population growth and stringent
requirements for the treatment of effluents. Recycling to agricultural land is regarded as the best practicable environmental option and currently represents the main disposal route. A novel method recently developed by United Utilities-plc, allows organomineral fertilisers to be produced by blending mineral fertilisers with biosolids thereby improving the N:P:K biosolids' ratios. Using this method, two OMFs with different N concentrations have been formulated: OMF10 (10%N) and OMF15 (15%N). The purpose of this study was to identify the effects of the use of OMFs on agricultural crops and grassland. To achieve this aim, a number of interconnected experiments using two soil types (sandy loam and clay loam), two OMFs, urea, and digested cake (3%N) as a base for comparison, have been set up. The experiments included the use of small plots (field) with winter wheat (Triticum aestivum L.), pots (greenhouse) with rye-grass (Lolium perenne L.), and an incubation experiment (laboratory). Results from the plot trial indicated that the use of OMFs produced similar (p=0.690) crop yields as urea (10516 and 10325kg ha-1 respectively) and that the most economic rates of N (MERN) were 287, 222, and 207kg [N] ha-1 for OMF10, OMF15, and urea respectively. The pot trial showed significant differences (p<0.001) in yield
between the control and the treatments with respect to the fertiliser type. After three cuts, grass yield was found to increase with the N content in the fertiliser and specifically with the concentration of readily available N. Similarly, increased application rate of N and concentration of readily available N in the fertiliser were found to have a significant effect (p<0.001) upon the N content of harvested plant material measured on average after three cuts.


Statistics for USQ ePrint 25443
Statistics for this ePrint Item
Item Type: Conference or Workshop Item (Commonwealth Reporting Category E) (Paper)
Refereed: No
Item Status: Live Archive
Additional Information: © (2008) by the 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. 084000.
Faculty / Department / School: Historic - Faculty of Engineering and Surveying - Department of Agricultural, Civil and Environmental Engineering
Date Deposited: 08 Jul 2014 05:32
Last Modified: 06 Jan 2015 04:40
Uncontrolled Keywords: organomineral fertilisers; OMF; biosolids; wheat; grassland; MERN; N-mineralisation
Fields of Research : 07 Agricultural and Veterinary Sciences > 0703 Crop and Pasture Production > 070306 Crop and Pasture Nutrition
07 Agricultural and Veterinary Sciences > 0799 Other Agricultural and Veterinary Sciences > 079902 Fertilisers and Agrochemicals (incl. Application)
07 Agricultural and Veterinary Sciences > 0703 Crop and Pasture Production > 070302 Agronomy
Socio-Economic Objective: E Expanding Knowledge > 97 Expanding Knowledge > 970107 Expanding Knowledge in the Agricultural and Veterinary Sciences
Identification Number or DOI: doi:10.13031/2013.25085
URI: http://eprints.usq.edu.au/id/eprint/25443

Actions (login required)

View Item Archive Repository Staff Only