Ridgewood_12-002_PrelimOMP_110913

                                                                                                          Myriad International Pty Ltd
                                                                                                                        PO Box 1910
                                                                                                          Sunshine Plaza QLD 4558
                                                                                                                            Australia
                                                                                                             Tel +61 (0)459 990 036
                                                                                                              [email protected]
                                                                                                                 ABN 79 145 658 877
                                                                                                                   ACN 145 658 877


                                                                                                              Friday, 2 August 2013


 W Donald Milligan Pty Ltd
 Top Forestry Road
 Cooroy Qld 4563

 Attn: David Milligan

 RE: Nutrient calculations proposed Broiler production system

 Dear David

 As requested a detailed analysis has been conducted in relation to the nutrient production potential
 (predominately Nitrogen) being generated by a proposed poultry broiler system to be located on your property
 at Cooroy which is an established Avocado orchard of 7000 trees.

 Figures provided by you in relation to shed size, number, batch turnover and litter depth for the poultry
 enterprise as well as details of the existing Avocado orchard parameters have been overlaid in a model with
 industry data on Poultry Litter analysis and the creation of compost from such litters.

 The analysis has revealed that while the poultry manure compost that will be produced by the proposed system
 will supply Nitrogen, the actual nutrient requirements of your existing 7000 tree Avocado orchard are greater.

 This indicates that while all the poultry manure compost produced on farm can be utilised by the orchard
 additional manufactured fertiliser nutrient will be required to meet the demands of your Avocado production
 system.

 Table 1: Total poultry manure compost weight generated per annum applied across the farms 7000 avocado trees to
 calculate the compost per tree available for application versus the annual Nitrogen requirement per tree if compost was
 the sole Nitrogen source available.


                                        Compost Nitrogen* (total)            Compost Dry weight            Compost Wet weight**
                                             (kgs / tree)                       (kgs / tree)                   (kgs / tree)
Poultry Manure compost N                           5                                285                            571
Tree requirements compost N                        8                                457                            914
Balance                                           -3                               - 171                         - 342
 *Initial fresh manure has average 3.5% Nitrogen, composting process reduces Nitrogen by 50 % to 1.75%. Availability of Nitrogen for tree
 use is 15 % of total hence for every 1kg Nitrogen required by the tree 6.66 kgs of Dry Weight compost is required.
 ** Compost wet weight = Final compost weight at 50 % moisture

 Additional fertiliser input into the farm of manufactured fertiliser has been calculated below as poultry manure
 compost will be an insufficient Nitrogen nutrient source.

 Table 2: Calculated rate of additional manufactured fertiliser required per tree to meet nutrient shortfall of the annum
 production volume of compost generated on farm from the broiler system

                                                 Fertiliser per tree          Fertiliser Farm
                                                         (kgs)                   (tonnes)
 Manufactured Fertiliser (12:2:14)                       3.75                        26

 Phosphorus contained in compost is predominately in the Citrate form which is extremely stable in the soil and
 not water soluble. The citrate form of Phosphorus tightly binds to the soil and only a small percentage is
 available for crop uptake. The application of the compost will greatly reduce the potential movements of
 Phosphorus on the farm due to water runoff. This is compared to the standard practice of reliance on