About this Journal Submit a Manuscript Table of Contents
Applied and Environmental Soil Science
Volume 2013 (2013), Article ID 960629, 9 pages
http://dx.doi.org/10.1155/2013/960629
Research Article

Field-Scale Evaluation of Biosolids-Derived Organomineral Fertilisers Applied to Ryegrass (Lolium perenne L.) in England

1School of Applied Science, Cranfield University, Cranfield, Bedfordshire MK43 0AL, UK
2National Centre for Engineering in Agriculture, University of Southern Queensland, Building Z2, West Street, Toowoomba, QLD 4350, Australia
3Harper Adams University, Newport, Shropshire TF10 8NB, UK

Received 3 August 2013; Accepted 11 September 2013

Academic Editor: Rodrigo Studart Corrêa

Copyright © 2013 Diogenes L. Antille et al. This is an open access article distributed under the Creative Commons Attribution License, which permits unrestricted use, distribution, and reproduction in any medium, provided the original work is properly cited.

Abstract

A field-scale experiment was conducted to compare the suitability of two organomineral fertiliser (OMF) formulations (OMF10—10 : 4 : 4 and OMF15—15 : 4 : 4) with urea and biosolids granules applied to perennial ryegrass. Results showed a 25% to 30% increase in dry matter yield (DMY) with application of OMF compared with biosolids granules but about 5% lower than urea. For OMF, an average input of yielded which was similar to that of urea; whereas, for biosolids, a yield of required an input of but DMY was lower ( ). Agronomic efficiencies with OMF were in the range of 26 to 35 kg , approximately double those of biosolids but about 5% to 10% lower than urea. Soil extractable P levels remained close to constant; therefore, soil P Index was not affected by OMF application. This result supported the reasons for the proposed OMF formulations and demonstrated the advantage of the products compared with biosolids which induced an increase ( ), in soil extractable P. The application of OMF at rates which do not exceed the optimum N rate for the grass crop should not induce significant changes in soil P Index including application to soils with satisfactory P levels. OMF application strategies are discussed which will enable minimising environmental concerns and maximising fertiliser use efficiency.