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Cyclone

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14 min read

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Dairy farmers are facing the challenges of adverse weather events, especially cyclones. The guidance touches on three critical areas: people, animals, and business operations. In addressing human concerns, the information suggests ways to evaluate property damage, monitor mental health, and offers essential contacts for assistance. For livestock, topics include relocating animals, handling deceased livestock, and managing health issues like lameness and mastitis. On the business front, the guide delves into banking assistance and insurance specifics. There's also advice on managing feed, drying off cows, and rejuvenating pastures marred by flood sediments.


People

If you or someone you know is struggling, reach out for help today. There’s a huge amount of support on hand. The health and wellbeing of you and your team is top priority to enable you to take care of the animals and the damage.

Assess damage of all on-farm housing. Do not enter properties alone or if they look unsafe. Develop a plan/strategy, set priorities and assign responsibilities as a team. Prioritise tasks, who is responsible for what, who is helping. Support your farm team and keep them updated as your plans change.

People contacts:

For adverse weather support please use the contact form at the bottom of this page or call 0800 4 DAIRYNZ

Animals

Moving stock between properties

Human and animal welfare takes precedent over TB movement controls and NAIT records. Call OSPRI on 0800 482 463 for advice specific to your situation.

  • If your usual pre-movement testing cannot be completed, farmers in the Hawke's Bay MCA have the option of requesting an exemption to pre-movement testing. The animals can then move legally under an official permit and OSPRI will schedule post-movement testing at the animal’s new location. Permits can be requested by phoning 0800 482 463. More information can be found on the OSPRI website.
  • OSPRI is also instigating temporary policy changes to the routine TB testing regime in cyclone-affected areas of the Hawke's Bay, Gisborne, Northland and the Coromandel that are not in the Movement Control Area (MCA). For farmers who are able and want to complete their routine testing, we can complete the testing if it’s safe for animals and people, and the property is accessible. Identify whether you are in an MCA using this OSPRI Disease Control Area (DCA) map.

For support for farmers affected by heavy rain and flooding in the North Island visit the OSPRI website.

Cull cows

Meatworks might be operating at reduced capacity, contact your stock agent or processor early for advice on bookings and delays.

Dead stock disposal

For specific rules in your region, refer to Federated Farmers regional rules on stock burial and offal pits.

Hawkes Bay farmersIf there are too many dead animals for you to deal with or conditions don't allow for on-farm disposal, contact Hawkes Bay Regional Council 06 835 9200 or 0800 108 838. The council will coordinate collection and appropriate disposal.

Animal health

After a flood, animals are often stressed leading to a weakened immune system which increases the risk of them becoming sick. Wet conditions are also the perfect environment for bacteria and insects to thrive. Monitor your animals closely for any signs of diseases such as lameness, mastitis, leptospirosis, and blackleg.

For animal welfare advice or assistance, contact MPI's animal welfare on 0800 00 83 33, your local vet or our humane slaughter guidelines.

Lameness

Lameness can increase within 1-3 weeks of severe wet weather. If you are concerned, or if 10% or more of your herd is lame, contact your vet. Visit our lameness webpage for more information on lameness prevention, identification, and treatment.

Mastitis and SCC

  • You may see an increase in mastitis or different mastitis to usual, if cows have been exposed to flood waters or silt.
  • SCC will be higher when milking frequency is reduced or milkings are missed and typically takes 2 to 5 days to fall below 400,000 cells/ml depending on the period without milking and the SCC of the herd prior to the changes in milking frequency.
  • Where possible introduce stripping before putting cups on to optimise your clinical mastitis surveillance. An increase in clinical mastitis cases is typically seen in quarters not milked for 36-48 hours or more. In DairyNZ trials, a quarter of the cows not milked for 7 days developed mastitis. Higher levels are likely in commercial herds. Vigilance is essential for the long-term health and productivity of the herd and for food safety.
  • SCC typically take 2 to 5 days to fall below 400,000 cells/ml depending on the period without milking and the SCC of the herd prior to the changes in milking frequency.
  • Spray teats thoroughly. Stock are likely to be confined to smaller areas than usual and so udders will be dirty. Attention to hygiene is very important, and teats should be sprayed teats manually after each milking to ensure complete coverage.

Milking routine

DairyNZ research has shown that delays of up to a week can be tolerated by mid-lactation herds, and with careful handling, they can return to full or near-full milk production.

Drying off abruptly

  • If you need to dry cows off, do what you can to reduce their feed intake and milk production first. For cows producing over 10 L/day (>1.0 kg MS/day), reduce feed intake by 30-50% for a week before dry off. Reduce intake to 'Maintenance' for 7-14 days after last milking for all cows.
  • Speak to your vet about whether your usual approach to dry cow therapy should be adjusted.
  • Visit our drying off abruptly webpage for more information.

Business

Civil Defence payments

Work and Income are able to help with Civil Defence payments to cover emergency food, clothing and bedding if yours has been damaged or destroyed by the cyclone, if you've had to leave your home, experiencing a loss of income because you can't work due to the cyclone.
Find more information on the Work and Income website.

Rural Professional Support

Banks

All banks have said they may be able to adjust loan payments, extend overdrafts and work with clients impacted. Farmers should have a conversation with their bank manager as soon as they can to understand what is available.

IRD changes/taxation relief

Financial management

  1. Check your cash and overdraft position to see if there is sufficient leeway.
  2. Estimate of money required for business continuity – e.g. feed purchase and repairs and maintenance.
  3. Talk to your banker as soon as possible - topics with your banker may include debt position, deferring payments, loan restructure, interest only, cashflow and overdraft facilities.
  4. Engage with your insurance provider as a priority as this can impact your financial position. Find more information on the FMG website.
  5. Complete Cashflow for 22/23 season ensuring that your current cash position is as accurate as possible. Visit our budgeting webpage for more info and tools.

If you have queries about milk quality and grading get in contact with our Farmer Support team on 0800 65 65 68

Insurance

Top Tips:

  1. Lodge your claim as soon as you can
  2. Take photos
  3. Make emergency repairs
  4. Assess your contents
  5. Assess farm fencing, bridges, culverts
  6. Dispose of contaminated food and feed
  7. Contact your insurance provider for advice on damaged vehicles

If your insurance provider is FMG see here for advice.

If you are in a situation where milk production has been reduced significantly and it looks like the milk income will substantially reduced below the expected target, talk to your farm owner about the situation in the first instance. If you are a contract milker and your contract as a guaranteed minimum return clause, you could be entitled to an advanced payment or to being paid up to the GMR value at the end of the season but be sure to signal this early. Also, discuss the option of working off the farm if this would be an option for additional income.

For all share farmers, if milk production has ceased and this is likely to continue for 60 days or more (this period applies to Federated Farmers contracts, this may be different in different agreements), force majeure may be relied upon to terminate the contract. Force majeure is a common clause in a contract which essentially frees both parties from liability or obligation when an extraordinary event occurs. However, before the contract is cancelled, the party wishing to terminate the agreement needs to have endeavoured to find an acceptable alternative. Either party may choose to cancel the contract under this clause.

As always, seek legal advice, have conversations early, keep a record of the conversation in writing (minutes and email) and consult expert advice at every stage. If you are a Federated Farmers member, use the 0800 legal service to discuss your options further.

Feed

Provide clean water and feed to your animals as soon as possible. If the water is not safe for you to drink, it is not safe for your animals. If possible, do not let animals drink floodwater.

Pasture and feed can be contaminated with sewage, bacteria, chemicals, and other toxins. Moulds can develop easily on water damaged crops, hay, and silage. Minimise access to contaminated feed and avoid using feeds that are showing signs of mould growth as these can be toxic to animals and people.

Prioritise feeding to high-priority animals e.g. cows close to calving and young stock. If you are using feed you haven’t fed before (e.g. fodder beet, kiwifruit, etc.), be sure to understand the risks and follow good management practices.

If you need assistance sourcing water and supplementary feed for your animals, contact Federated Farmers on 0800 327 646.

  1. If you desperately need feed contact: Federated Farmers National Feed Coordination Service. Farmers are responsible for paying for the feed, arranging delivery and checking the quality of the feed.
  2. Protect your existing pastures and paddocks - Stand-off cows if another adverse event comes through. Protect paddocks by managing pugging damage.
  3. Complete a feed budget and understand where your feed pinches could occur, to help you decide on a plan of action for pastures and crops. Contact your local extension or regional partner for help completing a feed budget.
  4. Assess each paddock for:
    • time underwater
    • the density of live pasture remaining after 10 days
    • silt type (sandy, clay/silt loam)
    • depth of sediment (<5 cm, 5-10, 10-25, >25 cm).
  5. Contact your local rural supply store representative or agronomist to help you decide on an individualised plan for your farm.
  6. Be prepared to use some alternative crops and pasture species (e.g. Oats and short rotation ryegrass) over the next couple of seasons to meet feed demand.
  7. Download and use the below flood damaged farm decision tree:

Regrassing and recovering pasture

Understanding the feed requirement for the upcoming winter and following spring and summer is important. Therefore, needing a plan for pasture recovery will help you recover.

There is little point to putting the entire flooded farm into temporary pastures to find that an identical feed pinch exists in the following spring when the pastures must be renewed again.

Using the information gained by assessing each paddock and rough feed requirements in the future, plan the recovery using the appropriate mix of short-term and permanent pastures. Then develop a timeline for regrassing. Some paddocks will need immediate action while others will need to dry before cultivation. Back-up plans are needed if the contractor is delayed or will only visit once e.g., is there some way to get pasture established using own machinery or that available from other farmers?

The regrassing response will differ depending on the depth of silt. Where no signs of grass growth have been visible after a week, consider the pasture dead. Paddocks recently grazed before the flooding will be worse affected. Shallow silt (<5 cm) can be ignored, up to 10-15 cm silt can be cultivated and greater than 20 cm will either need to be oversown or partially cultivated.

Flood sediment characteristically lacks structure and organic matter and comes in varying textures ranging from heavy to light i.e. from clay to silty loams to sand.

Clay based sediment

The clay loams are normally flat and feel smooth and silky and are usually found in ponding areas some distance from the river. The clay loams retain water for some time and if deep can’t be cultivated for considerable time because machinery will bog.

Sandy silt sediment

Silt to silty sands are often ruffled in surface texture and slightly gritty to touch. The surface of this medium flood sediment dries quickly but the subsurface remains moist. Sand flood sediment is often rolling, gritty to touch and drains very rapidly and is usually adjacent to the river and may contain a lot of gravel and flood debris.

Shingle

Revegetating shingle will be difficult. If grazing is required within 2 years then the sand/shingle needs to removed and stacked in a big stockpile. It can then be used for races or sold. Alternatively, the area can be retired and revegetated using such things as blue lupins. However, be careful not to build up seed stores of undesirable species if you are intending to regrass at a later date.

Flood sediment 5-10cm

If silt has completely covered the pasture than it will not survive and will need to be regrassed.

Normal cultivation methods will apply at these depths. Cultivation is recommended because silt is relatively infertile, will contain no organic matter or N, and have poor structure making it prone to pugging. A barrier to water drainage may also occur on the interface between the old pasture and flood silt. It is better in the long run to cultivate these depths of silt, so silt and underlying topsoil are combined. The resowing should have a high chance of success as it is normal farm practice in moist areas of lower North Island to resow pastures in early autumn March-early April.

When sowing the whole paddock, it is best to decide whether to sow short-term species, or perennials, as it is not always wise to mix them. Short-term Italian and hybrid ryegrasses will be preferred where feed production this winter is crucial, or where weeds/ fertility are expected to make it difficult to establish a good perennial pasture mix this year. Apply potassium and phosphate fertilisers with regular dressings of nitrogen as there will be little or no nitrogen cycling in the silt.

Flood sediment 10 to 25cm

In silt of this depth there will deeper and shallower parts in the paddock. By levelling the paddock it may be possible to bring most of the paddock into the 10-20 cm depth category.

Once the silt has dried heavy machinery can be used and deep ploughing (e.g. swamp plough) will help to mix the silt with the topsoil. If this is successful then cultivate and sow as normal. If the resulting soil is predominantly flood sediment rather than topsoil then sow in either short-term ryegrasses or forage oats or other deep rooted short term crops and return to permanent pasture the following spring or autumn.

Flood sediment >25cm

There are two options for deep clay/ silt loam flood sediment:

  • oversowing with a helicopter
  • cultivating the silt and drilling

In either case be prepared to recultivate in the following spring or autumn due to poor soil structure. If cultivating deep silt wait for the silt to dry sufficiently to support machinery. Use light weight machinery (including small tractors) and lightly break up surface, drill forage oats (annual, good option from farmer experience) or short-term ryegrass and harrow behind. After winter grazing forage oats can be mulched to aid in organic matter or made into silage in spring. On very sandy areas use the same seed mix as you normally use on your accretion area.

Is the silt smelling?

When river silts become smelly this indicates that toxins are present as a result of anaerobic organism activity. It is probable that seed germination after sowing directly on smelly silt will be impeded by these toxins. However recovery of the anaerobic silt following cultivation will be rapid. It is recommended that anaerobic silt be aerated or cultivate.

Fertility

As a river floods, the coarser sand material is deposited in the higher reaches of a river and closer to the river bank and these will be of poorer quality – less fertile and less suitable for pasture growth. Further down a river and further away from the river more clay loams are deposited and in theory, contain higher nutrient levels. But the immediate fertility of the clay and silt loams will be highly variable and should be tested as it will probably have a very low nitrogen content and low in phosphate with very low organic matter. Silt and sand can intermingle in layers making mixing a good option.

Flood sediment will need potassium and phosphate fertilisers and nitrogen. Pure silt should not have large amounts of fertiliser in one dressing as flood sediment has limited capacity to store fertiliser due to its low anion storage capacity. Smaller more regular fertiliser applications will be necessary. Seek expert opinion based on your soil test.

For advice and help on soil fertility and soil testing contact your local fertiliser company representative.

Pasture species

There will be a desire to grow bulk feed quickly by sowing an annual ryegrass, oats or other bulk crop. Not only could these crops provide quick bulk feed but can be mulched into paddocks to increase organic matter.

To ensure you have a spread of feed throughout the seasons, some of the new hybrid and perennial species will establish with similar vigour but will persist for much longer reducing the risk of a large area being renewed at the same time later down the track.

How to manage bolting Kikuyu

To ensure you're not impacting the establishment of perennial pasture and its production in winter and spring make sure that you:

  1. Faster rotations to get rid of as much leaf as possible.
  2. When soil and weather conditions allow, use mechanical means to get rid of all the stem that accumulates and reset the residual.
  3. Refer to the Northland Dairy Development Trust website for further information on kikuyu management:

Flood affected crops

Assess your winter feed crop. Review the extent of the damage on a paddock-by-paddock basis. Look for plant losses (washed away or lodged), areas still underwater or draining and assess areas that may be suitable for grazing.

Winter crop well-being. Monitor crops regularly over the coming weeks to assess plant survival, dry matter yield and the feed budget. If multiple paddocks are involved, a ranking system might be useful. Decide what paddocks need to be grazed earlier and which can left until later in winter.

Flood water contaminants. Mud and silt that cover bulb crops and kale stems may increase the risk of fungal and bacterial plant diseases. Stock is less likely to eat crops covered in silt so expect feed intakes to be lower.

Grazing of flood affected crops. Once crops paddocks are dry enough to access, restoring power and infrastructure is top priority. Cattle must be break fed on all winter feed crops (do not set stock or block graze).

For more information visit dealing with flood damaged feed crops on the Beef + Lamb website.

Feed contacts

East Coast/Hawkes Bay

Agronomists:

Soil and Fertiliser:

Northland/Waikato

Agronomists:

Soil and Fertiliser:

Podcast: Recovering from an extreme weather event

It’s been an incredibly tough time for farmers affected by Cyclone Gabrielle. For many, the recovery will be long and challenging. We thought it would be helpful to hear from one farmer who’s been through something similar and can talk about what the recovery looked like.

Dean Bailey was sharemilking in Manawatu when, in February 2004, a devastating flooding event left his farm submerged beneath two metres of water. It was six months before they were milking cows again on the farm. Dean will talk about how the recovery unfolded, the importance of good communication, rallying together as a community, and taking it one day at a time.

Michelle Greaves, a Regional Partner in DairyNZ’s Lower North Island Team, also joins us to talk about DairyNZ’s role in the response and recovery, and provide advice on how farmers can prepare for the seasons ahead.

Listen on:

Adverse weather support request

For individualised Cyclone Gabrielle support please follow the link to the form below.

Enter your details
Last updated: Aug 2023
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