Field studies on the value of organomineral fertilisers as amendments for perennial ryegrass (Lolium perenne L)

Antille, D. L. and Sakrabani, R. and Godwin, R. J. (2013) Field studies on the value of organomineral fertilisers as amendments for perennial ryegrass (Lolium perenne L). In: American Society of Agricultural and Biological Engineers Annual International Meeting (ASABE 2013), 21-24 Jul 2013, Kansas City, MO. United States.

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A field-scale trial was established to investigate the agronomic efficiency of novel organomineral fertilisers (OMF) produced from nutrient-enriched sludge granules. Two OMF formulations were tested: OMF15 (15:4:4) and OMF10 (10:4:4) which were compared with urea and biosolids granules applied to a grass crop over a period of two years. The fertilisers were applied at N rates in the range of 0 (control) to 250kg ha-1 at regular increments of 50kg ha-1. Results showed that the calculated agronomic efficiencies with OMF were in the range of 25 to 35kg kg-1 which were approximately double than those of biosolids and comparable to those obtained with urea (range of 30 to 37kg kg-1). Olsen's P in OMF-treated soil did not show significant changes (P>0.05); therefore, soil P Index was not affected. This result supported the reasons for the proposed OMF formulations and demonstrated the advantage of the products compared with biosolids which resulted in significant (P<0.05) increases in Olsen's P. It was also demonstrated that the application of OMF at rates equivalent to the optimum N rate for the grass-soil system should not induce significant changes in soil P Index in the longer-term including application to soils with already satisfactory P levels. Fertiliser application strategies (N rates and timing of OMF application) are discussed which will enhance agronomic and environmental performance.

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Item Type: Conference or Workshop Item (Commonwealth Reporting Category E) (Paper)
Refereed: No
Item Status: Live Archive
Additional Information: © (2013) by the American Society of Agricultural & Biological Engineers. For information about securing permission to reprint or reproduce a technical presentation, please contact ASABE at or 269-932-7004 (2950 Niles Road, St. Joseph, MI 49085-9659 USA). Paper # 131620220.
Faculty / Department / School: Current - Faculty of Health, Engineering and Sciences - School of Agricultural, Computational and Environmental Sciences
Date Deposited: 08 Jul 2014 02:14
Last Modified: 06 Mar 2017 03:25
Uncontrolled Keywords: urea; biosolids granules; organomineral fertilisers; OMF; ryegrass; Olsen's P; soil P index
Fields of Research : 07 Agricultural and Veterinary Sciences > 0703 Crop and Pasture Production > 070306 Crop and Pasture Nutrition
06 Biological Sciences > 0607 Plant Biology > 060701 Phycology (incl. Marine Grasses)
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/aim.20131620220

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