Pre-harvest orchard performance appraisal

29 January 2016 | Written by John Wilton, AgFirst | Australian Fruitgrower article

John Wilton argues that the weeks immediately before harvest are one of the best times to assess whether an orchard management strategy has delivered the desired crop. At this stage, weaknesses in canopy structure, crop uniformity, tree size and support systems are highly visible, while there is still time to refine harvest plans and make some corrective interventions.

The article recommends checking canopy density, uniformity of crop load, tree-size variation and trellis or tree-support problems. Open canopies with good light penetration support colour and eating quality, while variable crop loads can signal problems with thinning, vigour or pollination. Weak-growing areas should be mapped and investigated for causes such as poor drainage, shallow soil or water stress.

Wilton also stresses the importance of maturity and fruit-size monitoring before harvest. OrchardNet® sizing curves can help forecast harvest size, while maturity testing beginning several weeks before harvest supports better timing. Reflective mulch, re-thinning and stop-drop strategies may be useful in selected situations, depending on variety and crop condition.

The final message is that pre-harvest appraisal should connect orchard observations with next season’s management plan. Harvest access, fruit handling and tree support also deserve attention because poor tracks, rough handling or structural failure can quickly destroy value created during the growing season.