Acacia Mangium

Acacia Mangium Trial Data

Trial site: GP Samarakan

Seed lot: GP SPA 1081

Species: Acacia mangium

Treatment: 3000±100 seeds

Tray: BCC multi-cell growing tray

Date Sown: 4 November 2010

Treatment: 1 Control and 16 treatments

Fertilizer:

• Control: Agroblen 10-26-10+2.5MgO+TE at 10kg/m³
• SK Cote: SK Cote Plus 13-26-8+0.8MgO+TE
  • 0% uncoated at 5, 10, 15 and 20kg/m³ (T1, T2, T3 and T4)
  • 10% uncoated at 5, 10, 15 and 20kg/m³ (T5, T6, T7 and T8)
  • 20% uncoated at 5, 10, 15 and 20kg/m³ (T9, T10, T11 and T12)
  • 30% uncoated at 5, 10, 15 and 20kg/m³ (T13, T14, T15 and T16)

​Grading:

• 1st grading at 9-10 weeks
• 2nd grading at 13-14 weeks

​Grading Criteria:

• Ready 1: >25cm in height, >4 phyllodes, root collar diameter >3mm
• Ready 2: >20cm in height, >4 phyllodes, root collar diameter >3mm
• Delays: <20cm in height, <4 phyllodes, root collar diameter <3mm
• Culls: <10cm in height, disease ridden or dead

Data collected as follows.

• Rates that performed better than control were 5 and 10kg/m³ for all uncoated levels.
• Almost all of SK Cote had better average height than control.
• Best performance was of SK Cote at 20% uncoated level and 10kg/m³ rate. The total output was significantly higher and the average height was higher too. It was also noted that a higher percentage of output was achieved at the first grading compared to control.