Ridgewood_12-002_PrelimOMP_110913

TABLE 1 : W Donald Milligan Pty Ltd - Free Range Broiler Nutrient Calculations
Raw Litter Production                                                            Nitrogen Requirements
Shed Size (m)                   Length        100 Width              16          Avocadoes
                                Area         1600 m2                             No Trees                                   7000
                                                                                 Trees / ha                                  125    10 x 8 m plantings
Litter Depth                          75 mm                                      No Hectares                                  56
Volume Litter / shed                120 cubic metres                             Nitrogen required / ha 5                    150    kgs
                                                                                 Nitrogen required / tree                     1.2   kgs
Shed Cycles per year                 5.8                                         Total Nitrogen Required                    8400    kgs
Number Sheds                           8                                                                                      8.4   tonnes
Total Wet Volume per annum         5568 cubic metres                             Total Farm Nitrogen Requirement Annually
Bulk Density Litter 1                0.5 tonnes per cubic metres
Dry matter Conversion 2            0.75                                          Nitrogen required                           8.4 tonnes

Total Dry Matter per annum         2088 tonnes                                   Compost Nitrogen availability 6              15 %

Nitrogen component 3                 3.5 %                                       Farm Compost Nitrogen requirements           56 tonnes
                                     73 tonnes                                   Tree Compost Requirements                     8 kgs

Composting Raw Litter                                                            Farm Nitrogen Balance

Nitrogen losses 4                     50 %                                       Chicken Compost Nitrogen Inputs              37 tonnes
                                                                                 Chicken Compost supplied per tree             5 kgs
Nett Nitrogen                         37 tonnes
                                                                                 Farm Nitrogen compost requirements           56 tonnes
System Production per annum                                                      Tree Compost Requirements                     8 kgs

Nitrogen                              37 tonnes                                  Nitrogen Balance                             -19 tonnes
                                                                                 Nitrogen Balance per tree                   -2.8 kgs