Autumn is the pivot point of the farming year in southern Australia. The season — roughly March through May across Victoria, Tasmania, South Australia, southern New South Wales, and the southern margins of Western Australia — marks the transition from the stress of summer into the cool, moist conditions that drive the year's primary pasture growth flush. How well you use these two to three months determines the productivity of your farm for the next twelve.

Yet autumn on Australian farms is also one of the busiest periods of the year. The break of season (the first significant rainfall after summer) triggers a cascade of management decisions that need to happen quickly and in the right order. Paddocks need to be assessed, livestock need to be repositioned, fencing needs checking, water infrastructure needs attention after the summer stress period, and nutrition programs need updating to match rapidly changing pasture conditions.

This comprehensive autumn management checklist is tailored specifically to southern Australian conditions — the temperate, winter-rainfall zone where autumn is both a relief and a sprint.

Understanding the Southern Australian Autumn

Southern Australia sits predominantly in a Mediterranean climate zone: hot, dry summers followed by cool, wet winters. Autumn represents the transition between these extremes, and its key characteristic is variability — the break of season may arrive in late February in a wet year or not until late May in a dry one.

Key climate characteristics of autumn in southern Australia: - Average temperatures declining from 30°C+ maxima in March to 15–18°C maxima by May - Frosts begin in April/May on higher ground; tablelands of NSW and Victoria can see frosts from late March - Rainfall: the first meaningful rains (>15–20mm over a few days) trigger pasture germination and growth - In Tasmania and parts of coastal Victoria and SA, rainfall is more reliable and autumn management is more predictable - In inland and northern parts of the southern zone (e.g., parts of the NSW slopes), autumn can be very dry and the break may be delayed to June

The timing of the autumn break is the single most important variable in southern Australian farm management. Everything in this checklist needs to be done either before the break or in rapid response to it.

Section 1: Pasture and Land Management

Before the Break

1. Assess pasture condition in all paddocks Walk every paddock in late February/March and assess: - Ground cover percentage (bare ground vs. vegetation cover) - Species composition (desirable species vs. weeds) - Soil moisture — is there any subsurface moisture remaining? - Evidence of pasture damage from summer (bare scalds, hardpan formation, erosion rills)

Target: At least 50% ground cover going into the break to reduce runoff and erosion risk when rain arrives.

2. Identify paddocks needing spelling Paddocks with less than 50% cover, heavily browsed native grass areas, or newly sown pastures need to be spelled (rested from grazing) before and through the break to allow establishment.

3. Prepare for pasture renovation or oversowing If any paddocks need new species sown (annual clovers, ryegrass, phalaris, cocksfoot): - Soil test now (if not done in spring): target soil pH of 5.5–6.5 for most pasture species; check phosphorus (Olsen P target 15–25 mg/kg), sulfur, and trace elements - Order seed and fertiliser now — supplies of popular varieties can run out as the break approaches - Ensure seeding equipment (direct drill or conventional seed drill) is serviced and calibrated - Mark paddocks for oversowing on a paddock map

4. Weed management planning Annual broadleaf weeds (capeweed, Paterson's curse, annual ryegrass) germinate with the break. Pre-emergent or early post-emergent herbicides can be highly effective if applied at the right time. Have your spray equipment calibrated and chemicals purchased before the break arrives.

After the Break

5. Manage the "false break" risk A false break — 10–15mm of rain that germinates seed but is not followed by more rain — is a major risk in autumn. Monitor the forecast carefully before releasing livestock onto germinating pastures. Allow 7–14 days of follow-up rain before restocking germinating paddocks.

6. Calibrate rest periods for newly sown pastures Newly established clovers and grasses need to reach the 2–3 leaf stage before being grazed for the first time. Premature grazing (at the cotyledon stage) reduces establishment and can fail the sowing completely.

7. Autumn fertiliser application The break of season is the optimal timing for phosphate fertiliser application in southern Australia: - Superphosphate (9% P, 11% S): standard broadacre option; 100–200 kg/ha typical rate - Single superphosphate for sulfur-deficient soils - Apply within 2 weeks of a rain event for best uptake

Section 2: Livestock Management

Pre-joining Preparation

8. Body condition score (BCS) all breeding females The autumn period is pre-joining for many southern Australian sheep producers (rams out in March/April for lambing in August/September). Ewes should be at BCS 3.0–3.5 at joining for optimal reproductive performance. - Ewes below BCS 2.5: flush with improved nutrition (green feed, grain supplement) for 2–4 weeks before joining - Overfat ewes (BCS 4.0+): may have reduced ovulation rates; manage grazing to reduce condition before joining

9. Ram preparation - Conduct ram soundness examination: check feet, teeth, eyes, testicles (at least 28cm scrotal circumference for Merino rams), and semen motility if possible - Raddle (mark) rams for cycle detection during joining - Crutch rams to remove wool around the prepuce - Vaccinate if required (any rams entering the property from outside)

10. Join rams to ewes (timing) - For August lambing: rams out in late March (147-day gestation) - For September lambing: rams out in late April - For October/November lambing: rams out in May/June

11. Pre-joining vaccination Administer a clostridial booster (e.g., Glanvac 6B or Ultravac 7in1) to ewes 4–6 weeks before lambing is expected (working back from projected lambing date). In autumn joining programs, this means giving the pre-lambing vaccination in April–May for August/September lambing.

Cattle Management

12. Wean autumn calves Calves born in spring (August–October) in southern Australia are typically 5–7 months old by March–April — a good age for weaning. - Wean at 80–100 kg minimum liveweight - Separate cows and calves into paddocks out of earshot for 5–7 days to reduce stress - Draft weaners by sex and size

13. BCS cows at weaning The period from weaning to joining (if autumn breeding) is critical for cow nutrition. - Cows below BCS 2.5 at weaning are unlikely to cycle promptly - Target BCS 3.0 by joining; supplementary feed if necessary

14. Sell surplus stock before winter Autumn is typically the last opportunity to sell surplus livestock at reasonable prices before feed costs rise in winter. Consider: - Cull ewes (broken mouth, persistent lameness, mastitis history) - Surplus wethers - Backgrounder cattle not retained for finishing - Surplus breeding bulls/rams no longer needed

Section 3: Infrastructure — Fencing

15. Walk and assess all fencing post-summer Summer is hard on fencing in southern Australia: - Heat expansion and contraction loosens timber posts and strainers - Dry soil reduces post anchorage - Stock under summer nutritional stress push harder against fences - Overhanging vegetation dried and fallen onto fence lines

Walk all internal and boundary fences and note: - Broken or missing wires - Collapsed or leaning posts - Failed strainer post assemblies (the most critical repair) - Overgrown/shading vegetation on fence lines that needs to be cleared before wet conditions

16. Prioritise repairs before the wet Working on fencing after the autumn break becomes much harder: - Soft ground makes vehicle access difficult - Post driving is easier in dry, hard ground - Fence work in wet conditions is cold and uncomfortable

Aim to complete 80% of fencing repairs before the first significant rain.

17. Check electric fence systems - Test energiser output with a fence tester - Inspect all Earth stakes — summer dry conditions often reduce earth conductivity; water around earth stakes during dry conditions to improve earthing - Inspect all insulators for UV degradation (brittle/cracked insulators need replacing) - Check all wire breaks and shorts; vegetation contact is the most common cause of reduced fence performance

Section 4: Water Infrastructure

18. Inspect and clean all dams and tanks After summer, dams in southern Australia may be low or completely dry. Before autumn rains: - Remove accumulated organic matter and sludge from dam margins (improves runoff catchment) - Check dam walls for erosion, seepage, and vermin damage (wombat burrows and rabbit warrens in dam walls are common in southern NSW, VIC, and SA) - Clean all tanks; remove algae and sediment buildup - Check that overflow pipes and emergency spillways are clear

19. Service all troughs and float valves Summer heat causes rubber float valve seats to harden and fail. - Test every trough float valve manually - Replace any valves that leak or fail to shut off properly - Check ball floats for punctures (waterlogged floats don't rise correctly) - Clean trough basins — summer algae growth and dead insects accumulate

20. Inspect all poly pipes and fittings UV radiation and heat cause poly pipe to become brittle over summer. - Walk all mainline pipe runs where accessible - Check all fittings, elbows, and tee junctions for cracks - Insulate any above-ground pipe runs that are badly UV-degraded - Test pump systems before relying on them in autumn/winter

Section 5: Hay and Feed Storage

21. Assess hay and supplementary feed inventory Take stock of what you have and what you'll need through winter. Key calculations: - Number of stock × DSE rating × days to feed × feed energy requirement per DSE-day - Buffer: always budget for 20–30% more hay than your calculations suggest (weather delays, production shortfalls)

22. Order and receive feed before the break Once autumn rains start, road access to many southern farms becomes restricted and hay delivery becomes expensive and slow. Receive and store all purchased feed before the first significant rains.

23. Inspect hay storage areas - Check shed roofs for leaks (rain and hay = mould = lost quality and potential listeriosis risk for livestock) - Ensure hay is stacked off the ground on pallets or timber rails to prevent moisture wicking - Check that shed openings are vermin-proofed

Section 6: Record Keeping and Planning

24. Update livestock records - Reconcile mob counts after summer movements - Record all ear tag and NLIS numbers for any new stock or new cohorts - Record BCS assessments and joining decisions

25. Record weather and rainfall data Start keeping a rainfall diary if you don't already. The Bureau of Meteorology's water storage data, rain gauges, and historical records are invaluable for multi-year pasture and livestock planning.

26. Review summer performance — what worked and what didn't? Before the end of autumn, document: - Which paddocks held up best through summer (consider what's different about them — soil type, species, management) - Which livestock performed best in summer heat - What infrastructure failed that needs upgrading before next summer

Regional Variations Within Southern Australia

Victorian Dairying Regions (Gippsland, Western District, Northern Victoria)

The autumn break is critical for resetting pasture cover and managing the transition from summer supplementary feeding back to predominantly grazed pasture. Pasture pugging (soil compaction and pasture damage from livestock in wet conditions) becomes a significant management challenge in autumn — have laneways and sacrifice paddocks planned before the first heavy rain.

South Australian Farming Systems (Mid North, South East, Eyre Peninsula)

Cropping-livestock mixed farms need to carefully coordinate the timing of crop sowing with livestock management — livestock access to paddocks being prepared for cropping must be managed so cattle or sheep don't compact seed beds or damage emerged seedlings.

NSW Tablelands (New England, Southern Highlands, Central Tablelands)

Early frosts in April/May can catch autumn-sown pastures before they establish — be aware of frost risk windows and plan species selection accordingly. Some species (annual ryegrass, sub-clover) tolerate moderate frost at the seedling stage; others (kikuyu, some warm-season grasses) do not.

Tasmania

The most reliable autumn rainfall of any southern state. Autumn management is more predictable, but pasture pugging risk is higher due to softer soils and higher rainfall intensity. Laneways and standoff pads are important infrastructure investments.

Autumn Management Priority Calendar

Timing Priority Tasks
February–March BCS all breeding females; assess pastures; order seed and fertiliser; inspect and repair fencing
March–April Pre-joining vaccination; join rams/bulls; sell surplus stock; service water infrastructure
At the break Oversow prepared paddocks; apply fertiliser; manage grazing pressure on germinating pastures
April–May Wean calves; assess hay inventory; complete fencing repairs; check and repair sheds
May (end of autumn) Transition to winter management; verify all infrastructure is weathertight; confirm pre-lambing vaccination schedule

Conclusion

Autumn in southern Australia is simultaneously the most demanding and most rewarding management season of the year. The tasks in this checklist — assessed, prioritised, and acted on in the right order — set up a farm for a productive winter and spring. The farms that consistently perform well in southern Australia are those where the fundamentals are in place before the break arrives: conditioned livestock, repaired infrastructure, prepared pastures, and adequate feed reserves.

The break of season is a window, not a guarantee. Make the most of every week in autumn.

For local soil testing services and pasture advice, contact your state agricultural department (Agriculture Victoria, NSW DPI, PIRSA, DPIRD) or local Landcare group. For NLIS and livestock movement records, access the NLIS database at nlis.com.au.