Response to oustanding issues Animal Husbandry MCU12/0184

                                                                                                               Myriad International Pty Ltd
                                                                                                                                   PO Box 1910
                                                                                                               Sunshine Plaza OLD 4558



 ~Myriad       International
                                                                                                                   Tel +61 (0)459990036
                                                                                                                                       Australia


                                                                                                                   [email protected]
                                                                                                                        ABN 79 145658877
                                                                                                                             ACN 145658877




                                                                                                                   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)                      (kes / tree)
Poultrv Manure compost N                                   5                               285                                   571
Tree requirements compost N                               8                                457                                   914
Balance                                                  -3                               -
                                                                                              171                            -
                                                                                                                                 342
      . .
                                                                                                                        ..


 *Imtlal fresh manure has average 3.5% Nitrogen, compostmg process reduces Nitrogen by 50 % to 1.75%. Availability of Nitrogen for tree
 use is 15 % of total hence for every   lkg 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