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2023 | Australian Macadamia Society | Manual/guide
Key messages this month include :
• Spotting bug. Late season damage is only fully revealed in consignment reports. Damage is worse in thin-shelled cultivars and following rain.
• Macadamia Nut borer (MNB). Like many pests, MNB is triggered with warm, wet weather. Damage appears as 2-3 mm holes at the top of shells.
• Botryosphaeria branch dieback. We’ve been hearing more about this disease because it is causing increasing damage in many tree species. Infection symptoms are obvious in summer.
• If the orchard has experienced prolonged summer rain and/or a heavy crop, you may need to adjust your nutrition program.
• Finish pre-harvest clean-up ensuring minimal old nut, sticks and debris remain on the orchard floor.
• Download the AMS Harvest Checklist and Grower Harvest Tips.
• Are you concerned about how to prioritise inputs and adjust operations for the season ahead? RSVP for the AMS MacGroup events.
2023 | Australian Macadamia Society | Manual/guide
Key messages this month include:
• Spotting Bugs. Although shells have hardened, damage is still possible and will be worse after rain.
• Leptocoris. More Leptocoris have been found in orchards. We don’t know if this is due to population surges or better late season (knockdown) monitoring.
• Macadamia Nut Borer. MaxTrix wasp releases should continue into January. This is particularly important if you have thin shelled cultivars.
• Is it Husk spot or Husk rot? They need to be dealt with differently.
• Water requirements are now at their maximum, but most regions have ample water in the soil profile.
• Have a plan in place to deal with storm damage to the orchard and infrastructure.
• Start preparing for preharvest clean-up. Orchard floor fanatics make more money.
• This won’t be a “usual” season with regard to nut deliveries. Ensure you have plans in place and adequate storage options.
2022 | Australian Macadamia Society | Manual/guide
Key messages this month include:
• Macadamia Nut Borer (MNB), keep monitoring for MNB eggs. It is critical in December to release MacTrix and understand its' limitations.
• Spotting bugs, keep monitoring by examining fallen nuts for evidence of damage and then swapping to in tree monitoring.
• If you have trees younger than four years that may not be bearing, remember they can be affected by pests that will hamper growth.
• There is nutritional demand to support both spring flush and developing nuts.
• Storm season is here again, and you will need to be prepared to deal with any orchard damage.
• Benchmarking data collection is underway for the 2022 season.
• Start a conversation with your processor. With global and potential domestic oversupply, many things will be different to what is “usual”.
2022 | Australian Macadamia Society | Manual/guide
• With the current conditions, monitoring for spotting bug will be critical. Look for damage at least weekly and later you will need to drop sheet to understand blind damage.
• Monitor for macadamia nut borer (MNB) eggs signalling the start of flights into the orchards, to help time releases of MacTrix.
• Check shed nuts on the ground for macadamia seed weevil (MSW) eggs or larvae.
• Leaf miner will likely be driving you crazy! We have had a season like no other for this usually minor pest.
• With later flowering and very wet season, a later than usual husk spot control program may be required.
• Nutritional demand is increasing to support both a new flush and developing nuts.
• Orchards don’t need to look like golf courses! There are huge benefits to letting the orchard go.
• The potential for damage from hail, wind, excessive rain or flooding from intense storms is increasing and will remain through summer, so be prepared.
• The new ‘Macadamia Industry Benchmarking & Sustainability Insights 2022-2027’ project has started and data collection for the 2022 season is underway, but they need you to complete the collection form.
2022 | Australian Macadamia Society | Manual/guide
• If your orchard has a history of husk spot and/or susceptible cultivars, you need to be ready to apply fungicide as nutlets reach match-head size.
• Macadamia seed weevil (MSW). As weevils try lays their eggs between the husk and developing nut, there is a critical period to protect.
• Spotting bug, early in the season look for damage on nutlets as they reach pea size.
• Banana fruit caterpillar (BFC). In northern regions, monitor for BFC in leaf litter.
• If you are unsure of how trees are progressing nutritionally, spring is a good time to sample leaves after flowering before the new flush.
• Current demand for potassium and calcium is high from developing nutlets.
• October/November are generally the last months you can apply animal manures and uncomposted material.
• Keep up monitoring and sprayer maintenance over the next few months.
• The forecasted wet period ahead is an opportunity to seed/plant areas of your farm that need improved groundcover.
2022 | Australian Macadamia Society | Manual/guide
Key topics this month include:
• Monitor weekly to fortnightly for pest and diseases that affect flowers.
• Best practice during flowering is to bring managed pollinators into the orchard to assist naturally occurring pollinators and hives that remain year-round.
• During spring, biological processes and input demands will increase.
• All preparations for spraying should now be complete and your equipment calibrated and ready to go.
• You are likely to be doing some sort of canopy management over the next few months. Remember to be safe.
2022 | Australian Macadamia Society | Manual/guide
Key Topics this month include:
• Start monitoring for pest and diseases that impact flowers.
• If you haven’t already done so, book a pest consultant to regularly monitor your orchard.
• As weather warms tree nutrition and water requirements will increase, particularly as flowers have started to emerge so early in the season.
• At the end of harvest season, which for many is still far away, conduct a thorough audit of what needs to be repaired.
• Once you have finished harvesting review your season with your consultant/GLO and decide on post harvest orchard floor repair and canopy management.
• Prepare for the start of a new crop protection season.
• Have an agreement with your beekeeper if you’re bringing managed pollinators into the orchard.
2022 | Wilson R, Wallace H | Manual/guide
Stingless bees are excellent pollinators of macadamia and will forage heavily on macadamia when it is in flower. However stingless bee hives that are left on-farm year round may starve if they do not have access to other food sources when macadamia is not flowering. This guide identifies pollen food sources for stingless bees year-round. We identified major plant sources in the pollen pots of 57 Tetragonula carbonaria colonies over 2 years in orchards and forests in southeast Queensland.
2022 | Australian Macadamia Society | Manual/guide
• From now until the end of the year, focus shifts to crop production and protection underpinned by monitoring – which is not just looking for pests or disease but assessing biotic and abiotic orchard factors.
• Thoroughly clean shed equipment at the end of harvest and remove any residual nuts that may attract vermin and harbour pests such as kernel grub.
• Audit your chemical store and ensure you and all staff have current chemical application certification – additional licenses are required in NSW if you are contracting spray services, even for a neighbour.
• Prepare for crop protection activities ensuring correct sprayer/tractor calibration as well as nozzle/cannon selections – conduct coverage and tractor speed tests
• If you are planning canopy management, do you know what you will do with prunings?
• Now may be your last chance to order organic inputs for application post-harvest.
• A post-harvest schedule will help you prioritise orchard operations and booking contractors as you finish this season and prepare for the next.
• Professional beekeepers will be looking to place hives on orchards – ensure hives have not been moved from or within a biosecurity zone (currently all of NSW).
2022 | Australian Macadamia Society | Manual/guide
Key topics this month include:
• Disaster relief grant applications have been extended in QLD
• Factoring in weather conditions for your pest and disease management plans
• Nutrition plans need to remain flexible, consider crop load and weather events - discuss soil/leaf sampling results with your consultant to plan nutrition adjustments prior to flowering
• Harvesting in wet conditions – key considerations and adaptations including processor sampling for quality of nut that has been lying on the orchard floor
• Post-harvest storage – mitigating germination, mould and brown centres with effective airflow and timeous operations
• Check now that you and your staff have valid chemical application certification
• Book your pest consultant for July to monitor for lace bug, flower caterpillar and flower diseases