SESSION OUTLINE • Brief Overview of Karoonda Site Results • Key Principals of Spading Success • Lowbank Trial Results and Discussion

2. SESSION OUTLINE
• Brief Overview of Karoonda Site Results
• Key Principals of Spading Success
• Lowbank Trial Results and Discussion

3. KAROONDA SITE ABOVE SEEP AREA

4. Non wetting sand over clay
Control
Spaded

5. Non wetting sand over clay
Spaded with
Chicken Manure

6. YIELD RESULTS

7. 0.0 0.5 1.0 1.5 2.0 2.5 3.0 3.5 4.0
Unmodified
Spaded
CM 6 t/ha spaded
CM 9 t/ha spaded
Yield t/ha

8. Modification: Unmodified Spaded CM 6t/ha
Spaded
CM 9 t/ha
Spaded
Average grain yield (t/ha) 1.55 2.17 3.29 2.8
Income @ $220/t $ 342 $ 478 $ 725 $ 616
Additional income $ - $ 136 $ 383 $ 274
Cost of modification $ - $ 100 $ 310 $ 415
Increase $ in first year $ - $ 36 $ 73 -$ 141

10. WEED DIFFERENCES…?
Spaded Control

11. WHY SPADING WITH CHICKEN MANURE WORKS
Breaking Deep Compaction

12. WHY SPADING WITH CHICKEN MANURE WORKS
Significant increase to nutrition and organics
(photo from Nigel Wilhelm, SARDI)
Zinc Deficient
Zinc Enriched

14. LOWBANK SPADING TRIAL RESULTS

24. ACKNOWLEDGEMENTS
Karoonda
and
Lowbank
Agricultural
Bureaus