March 23, 2026 • 17 mins
Back in the day, the go-to approach for pest control was to use insecticide to kill anything moving in the crop. Not only was that not the most effective control method, but it also led to a rise in resistance. The new way is Integrated Pest Management, or IPM. This method moves beyond a chemical-only solution and employs a multi-faceted approach. It is a valuable tool for farmers and growers.
March's Tech Talk is all about adopting IPM into your system. Joining the conversation is PGG Wrightson Technical Specialist Chris Lambert.
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(00:10):
You're listening to Blue Shield Diary, the Pity writes and
podcast for farmers and growers.My name is Milton Monroe.
I'm your host and PG Wrightson technical team manager.
Back in the day, the go to approach for dealing with most
insect pests was blanket use of insecticides.
Nuke them all, ensure that nothing moved in the paddock.
But as we came to learn overtimethat was not the most effective
(00:33):
method. In fact attended to create more
problems as we took that predator pist balance at a
ratio. We also now, much to our
detriment, have realised that that sort of approach led to a
rise and insecticide resistance.Roland Integrated Pest
Management or is it more commonly known in the industry
as I PM, This takes a comprehensive approach to
(00:56):
managing pests without relying solely on those chemical
options. For the best advice using
integrated pest management in your operation, we turn to our
technical specialist for vegetables, Chris Lambert, for
this month's Fruit Feed Tech Talk.
Welcome to the show, Chris. Hello Melton.
Thank you for having. Me, great to have you here.
So I know this is a bit of a passion topic for you, but
(01:20):
integrated Pest management, do you want to give me sort of a
very quick kind of nutshell overview of of what is IPM?
IPM, I suppose started out with a focus on insect pests, but
it's it's evolved to encompass all pest, diseases, weeds within
our crops. And what it means is it's a
(01:41):
multifaceted approach to managing weeds using systems or
techniques that complement each other rather than, as you say,
just reaching for a can of insecticide and looking at it
comes with a bit of a hierarchy of controls.
And we try to focus those controls down with those that
are the least impact on the environment.
(02:03):
So we change cultural practises to preemptively change the
environment or the way that those crops are grown to make
them less susceptible. We move up to physical controls
where we can create barriers or or just physically, structurally
keep those pests out, moves to abiological approach using nature
(02:24):
to solve those problems. And then the last point of call
is that there is that chemical control.
There's kind of a bit of a hierarchy of responses based on
what the actual issue is and theseverity of it of it.
Absolutely, yeah. So we try and stay down the
bottom of the pyramid or the hierarchy.
And if we're unable to control it, we move up.
And if it is justified, if we can't manage those pests using
(02:48):
those other techniques, then we are justified in an IPM system
to use those chemical controls, those insecticides.
And in which case we still have a hierarchy then that we prefer
to use those softer selective insecticides that target the
species that we want to get rid of and leave the other ones that
(03:10):
are non targets, those beneficial insects within our
crops that are doing a service for us anyway.
But maybe you can give me like areal life example.
I know you live and breathe, youknow, insect management and, and
I also live and breathe, yeah, vegetable crops.
Can you give me an example of how you would apply this
hierarchy to to one of the vegetable crops you look after?
(03:33):
Yeah, okay. So we'll talk Brassica crops
just earlier today. We're working through the
vegetable industries, working through updating the Brassica
IPM guides for the industry. So that's a good example.
And I mean we start with that cultural control.
So a lot of it is around things that we can do strategically.
(03:55):
So it's choosing varieties that might be less susceptible to
certain pests or diseases. It's choosing the right ground
that's suitable, managing rotations, crop spacing,
population, things like that. So there's a whole heap of
things we can do before we even come to growing that crop that
are great controls there. Physical controls, not so much
(04:15):
for the pest management, but there's certainly things like
cultivation we can do to manage weeds.
Weeds are obviously going to affect our final yield because
they can compete with our crops,but also those weeds might be
encouraging other pests within their brassica.
Weeds, for example, are hosts who club group or insect pests
(04:39):
that attack our brass Acas. So we manage those weeds there.
They also create environments for disease to develop like
sclerotinia. So it's it's looking at it as a
system approach. Managing weeds also ends up
helping our insect pest and our diseases as well.
You've already mentioned, you know, we've got, we've got good
bugs and we've got bad bugs. And you know, as a, as someone
(05:02):
with a background in entomology,I'd imagine this is this is
pretty, pretty straight forward and easy for you to identify
them. But what about our air growers?
Yeah. I mean, how do you, how do you
tell the difference between which of the way the insects
that are going to be able to cause you some benefit and which
are the ones that are going to cause you some grief?
Absolutely. And you hit the nail on the
head. A key part of IPM is being able
(05:23):
to recognise what is good in ourcrops and what is bad.
And I mean, a start is learning what's bad because essentially
anything else that is there is good.
Anything that's adding that biodiversity to our crops is
food for those predators and parasitoids.
But there's a whole lot of resources.
And exactly what I was talking to earlier, this IPM reset
(05:44):
project that we're doing will release an IPM manual for those
crops. But everyone will be familiar of
these good bugs, whether we recognise the job that they're
doing. But species like ladybirds,
lacewings, hoverflies, predatorybeetles, predatory bugs, the
list is endless of predators andon the parasitoid front.
(06:07):
So these are species that actually have adapted to lay
their eggs within a pest. The eggs will emerge, will hatch
and consume the lava, will consume the pest from the inside
out. So pretty gruesome life history,
but very effective. And most of these could be
readily overlooked. I'd say the vast majority are
(06:27):
between 1:00 and 5:00 millimetres long.
So these are tiny. And yeah, just there's lots of
resources out there for you to read and identify.
Always happy to be sent picturesof a bug if you're not sure
that's favourite pastime. I will.
Ohh, hold you to that one Chris.I guess another key aspect of of
IPM has been, has been the, the,the new development of new
(06:51):
insecticides which have got a softer profile for them, less
broad spectrum kill everything that moves and more surgical
strike only targeting those those problem insects and
leaving the beneficiaries alive.What?
What role have these new products had in developing
(07:12):
modern IBM systems? They're absolutely critical
because we are using multiple techniques to manage the pests.
If we're using a broad spectrum insecticide, it is not
compatible with that traditionalbiological control where we are
relying on those natural enemies.
So the shift towards selective insecticides means there's
(07:32):
limited harm on the natural enemies or beneficiaries within
our crops and they will then be allowed to continue in their
populations. Because what we do when we apply
a broad spectrum is we're essentially resetting the
ecology within that block. It takes time for beneficiaries
to come back in from the boundaries.
(07:52):
It takes time for their populations to grow to the point
where they can actually manage pests.
So if we use an option where they are less impacted, they're
still there within the crop, they're able to bounce back and
build their populations much quicker.
What about the role of biologicals in this space?
We are seeing more and more companies around the world
(08:13):
looking at biological alternatives to agrichemical
small molecule agrochemicals, looking at things like, you
know, microbial products or plant extracts.
What role did biological products actually have in
developing IBM systems? Good question.
So the role of biologicals, one of their assets is that they
are. If we talk of selective
(08:34):
chemistry, biologicals are oftennext level selective.
So they will target specific orders of insect, sometimes even
specific species. So certain viruses might only
attack a particular species. Strains of bacteria, say
Bacillus thuringiensis beauties might only target certain orders
(08:54):
of insects. So these are really, really high
selective options that will essentially leave beneficial
completely unscathed. What it does mean they they come
with a few drawbacks. They're often a little bit
harder for growers to use. They might not be as long
lasting, they might be unstable and UV.
(09:14):
So comes with a trade off where we may be applying them more
often and and the fact that theyare a little bit harder to use
don't last as long. We have to be really targeted
with when we use them, particularly if they're not as
efficacious. And so accurate monitoring and
scouting and seeing when good time to be applying these
(09:36):
products is really key. So we use them as that that
trend and pressure is building, but before it becomes he an
infestation and outbreak. What about the use of of of
actual insects breeding them up and releasing beneficiaries out
into the paddock? And I know a bit of a loaded
question for you because I do understand you.
(09:56):
You recently had a tour through through Bioforce.
So look, do you want to tell me about the use of actual insect
populations and then maybe even tell me a little bit around your
recent tour? I'll just, I'll go on a little
tangent and I'll come back to it.
So, so you're absolutely right. So beneficial walls are, are
great. We can invite them in then they
(10:16):
are there in the environment, but we can also breed these in
captivity and package them and formulate them in ways that
growers can deploy. So that's what you're referring
to with this commercial biological control, augmented
biological control as we sometimes call it.
So there are companies in New Zealand by force when you
mentioned being one that commercially rears a range of
(10:40):
insects. This is a really interesting
approach that has a lot of scientific rigour behind it and
has used overseas an awful lot, particularly in greenhouses
where that environment is enclosed.
You tend to see a better retention of those beneficiaries
there. I believe it has a lot of
(11:01):
application for us in outdoor crops as well.
Now the challenge comes with those biological control agents.
We release them into our crops. But what happens when when
there's no pests, when there's no food left in that crop for
that beneficial what are they gonna do?
They're either gonna die or they're gonna move outside the
crop elsewhere. So what we need to do is provide
(11:24):
some of those foods, some of theother resources they need like
habitats, nectar and pollen to try and retain them there.
So we have some work going on inthe industry trialling
increasing the floral biodiversity within or around
crops to maintain or to attract those beneficiaries.
Just on your, your visit to Bioforce question, that was
(11:46):
awesome. They're really cool, showed us
around the what was the highlight there?
They call it the snow globe. So in there they are growing
tobacco plants in order to rear a pest, which is white fly.
And from that they are breeding the biological control agent
that attacks those white fly. And you walk into this room and
(12:09):
you brush against a tobacco plant and it's like a cloud of
snow. That's why they call it the snow
globe. So really interesting visit.
You talked a little bit the around trying to encourage being
officials and, and and you sort of mentioned a little bit
around, you know, some companionplantings.
Did you want to expand on that just a little bit?
That's a very different way of of probably growing a crop than
(12:32):
what we've traditionally seen inNew Zealand.
I'm absolutely. And, and in commercial crop
production where the focus is onmaximising our productive area,
we have to think quite smartly about how we deploy this.
It's a little bit different in agarden where companion planting
has been done for, I don't know,centuries.
There's lots of space to put flowers here and there.
(12:54):
But in a commercial vegetable crop we need to be a bit
cleverer. So what are the unproductive
areas of a paddock that we can use?
We've got fence lines, headlands, there might be a, a
fiddly corner of a, a paddock where it's awkward to the
harvest, so it's less productiveand we're even spray rows where
they're often results in crop being it's dealing with more
(13:18):
compaction, mud splash and, and and traffic going over top of
it. So there are opportunities there
to incorporate flowering biodiversity, whether it's
annuals or perennials, and you've just got to look for the
unproductive areas. What impact does does IPM have
on air resistance management programmes?
Resistance is is very much the issue of airtime.
(13:40):
We are seeing the speed at whichpests, diseases and weeds are
becoming resistant to products is a lot faster than we can
actually develop new families onnew modes of action.
How does IPM help from AA resistance management
perspective? IPM was born out of the need for
(14:02):
a system to deal with resistance.
As you said, we've we've been focusing on those other
management tools, but chemical tools or insecticides in
particular are absolutely required for our current
production systems. And so a big chunk of I PM is
how we use those products appropriately.
(14:24):
So it's, it's using them when wehit certain levels thresholds of
pests within those crop, it's managing how many times we use
them. So the number of times that
those pests are exposed to that same selection pressure.
And then it's about strategies like clustering or windowing
(14:44):
depending on the crop will the industry designs ways so that no
population of pest is exposed tothe same mode of action for that
whole year. So if we when we come to
chemical control, there are still a set of rules and
guidelines that we have to follow to, to maintain that
resistance. But essentially, if we don't do
(15:05):
that, if we just throw things onWilly nilly, even if they are
selective, we will get resistant.
We will have less tools, our disposal to use and then the
loss of 1 product puts more pressure on remaining products.
So it's a runaway train of resistance.
So yeah, we have to be so careful with it.
And IPM is the best system that we have and we know to manage
(15:28):
that. Just seems to me that this is a,
if we want to ensure that we still have control programmes
20-30 years into the future, this has got to be the the way
we have to think about that ArumAirspray programmes and their
management programmes right here, right now.
Yeah, completely agree. And fortunately there's a lot of
expertise in the industry here. So not everyone needs to be an
(15:50):
expert on entomology or resistance management.
But there is a lot of resource out there to help with that in
the industry with the likes of our horticulture representatives
and things like that can guide you if you're not sure.
And even the use of crop monitoring services to provide
that information that we use to make decisions in our crops as
(16:10):
well. Or good to know that we've got
that level of support out there.Because one thing I would say
from our discussion, Chris, is this is certainly a lot more
complex and complicated than probably our old system of just,
if it moves, it dies. But I think we can both agree
this is the only way to go forward.
And if we want to continue to, to be able to to grow vegetables
(16:33):
across the country exclusively matter which market sector it
is, all of our horticultural andrural sectors, we're all going
to have to look at how we can wecan work in tandem with Mother
Nature to try and grow the best crops.
Completely agree. It's got to be, it's got to be
profitable for the grower. They need to be able to make
money. It's got to result in fordable
food for the consumer and we have to protect the environment.
(16:56):
And I think it's got to answer all those questions for it to be
a good system. And I think IPM ticks all those
boxes. Thank you very much for that
Chris, been really good to have a chat to you today.
Thank you for having me, that was great.
Thank you for joining the Blue Shield Diary.
For more information and technical advice, visit our
website. You'll find a link in our show
(17:17):
notes. Plus, if you have a topic or
anything that you might find interesting and you'd like us to
answer it on Techtalk, send us an e-mail at
podcast@pgawrightson.co dot NZ. Thanks everyone.
You're listening to Blue Shield Diary, the Pity writes and
podcast for farmers and growers.My name is Milton Monroe.
I'm your host and PG Wrightson technical team manager.
Back in the day, the go to approach for dealing with most
insect pests was blanket use of insecticides.
Nuke them all, ensure that nothing moved in the paddock.
But as we came to learn overtimethat was not the most effective
(00:33):
method. In fact attended to create more
problems as we took that predator pist balance at a
ratio. We also now, much to our
detriment, have realised that that sort of approach led to a
rise and insecticide resistance.Roland Integrated Pest
Management or is it more commonly known in the industry
as I PM, This takes a comprehensive approach to
(00:56):
managing pests without relying solely on those chemical
options. For the best advice using
integrated pest management in your operation, we turn to our
technical specialist for vegetables, Chris Lambert, for
this month's Fruit Feed Tech Talk.
Welcome to the show, Chris. Hello Melton.
Thank you for having. Me, great to have you here.
So I know this is a bit of a passion topic for you, but
(01:20):
integrated Pest management, do you want to give me sort of a
very quick kind of nutshell overview of of what is IPM?
IPM, I suppose started out with a focus on insect pests, but
it's it's evolved to encompass all pest, diseases, weeds within
our crops. And what it means is it's a
(01:41):
multifaceted approach to managing weeds using systems or
techniques that complement each other rather than, as you say,
just reaching for a can of insecticide and looking at it
comes with a bit of a hierarchy of controls.
And we try to focus those controls down with those that
are the least impact on the environment.
(02:03):
So we change cultural practises to preemptively change the
environment or the way that those crops are grown to make
them less susceptible. We move up to physical controls
where we can create barriers or or just physically, structurally
keep those pests out, moves to abiological approach using nature
(02:24):
to solve those problems. And then the last point of call
is that there is that chemical control.
There's kind of a bit of a hierarchy of responses based on
what the actual issue is and theseverity of it of it.
Absolutely, yeah. So we try and stay down the
bottom of the pyramid or the hierarchy.
And if we're unable to control it, we move up.
And if it is justified, if we can't manage those pests using
(02:48):
those other techniques, then we are justified in an IPM system
to use those chemical controls, those insecticides.
And in which case we still have a hierarchy then that we prefer
to use those softer selective insecticides that target the
species that we want to get rid of and leave the other ones that
(03:10):
are non targets, those beneficial insects within our
crops that are doing a service for us anyway.
But maybe you can give me like areal life example.
I know you live and breathe, youknow, insect management and, and
I also live and breathe, yeah, vegetable crops.
Can you give me an example of how you would apply this
hierarchy to to one of the vegetable crops you look after?
(03:33):
Yeah, okay. So we'll talk Brassica crops
just earlier today. We're working through the
vegetable industries, working through updating the Brassica
IPM guides for the industry. So that's a good example.
And I mean we start with that cultural control.
So a lot of it is around things that we can do strategically.
(03:55):
So it's choosing varieties that might be less susceptible to
certain pests or diseases. It's choosing the right ground
that's suitable, managing rotations, crop spacing,
population, things like that. So there's a whole heap of
things we can do before we even come to growing that crop that
are great controls there. Physical controls, not so much
(04:15):
for the pest management, but there's certainly things like
cultivation we can do to manage weeds.
Weeds are obviously going to affect our final yield because
they can compete with our crops,but also those weeds might be
encouraging other pests within their brassica.
Weeds, for example, are hosts who club group or insect pests
(04:39):
that attack our brass Acas. So we manage those weeds there.
They also create environments for disease to develop like
sclerotinia. So it's it's looking at it as a
system approach. Managing weeds also ends up
helping our insect pest and our diseases as well.
You've already mentioned, you know, we've got, we've got good
bugs and we've got bad bugs. And you know, as a, as someone
(05:02):
with a background in entomology,I'd imagine this is this is
pretty, pretty straight forward and easy for you to identify
them. But what about our air growers?
Yeah. I mean, how do you, how do you
tell the difference between which of the way the insects
that are going to be able to cause you some benefit and which
are the ones that are going to cause you some grief?
Absolutely. And you hit the nail on the
head. A key part of IPM is being able
(05:23):
to recognise what is good in ourcrops and what is bad.
And I mean, a start is learning what's bad because essentially
anything else that is there is good.
Anything that's adding that biodiversity to our crops is
food for those predators and parasitoids.
But there's a whole lot of resources.
And exactly what I was talking to earlier, this IPM reset
(05:44):
project that we're doing will release an IPM manual for those
crops. But everyone will be familiar of
these good bugs, whether we recognise the job that they're
doing. But species like ladybirds,
lacewings, hoverflies, predatorybeetles, predatory bugs, the
list is endless of predators andon the parasitoid front.
(06:07):
So these are species that actually have adapted to lay
their eggs within a pest. The eggs will emerge, will hatch
and consume the lava, will consume the pest from the inside
out. So pretty gruesome life history,
but very effective. And most of these could be
readily overlooked. I'd say the vast majority are
(06:27):
between 1:00 and 5:00 millimetres long.
So these are tiny. And yeah, just there's lots of
resources out there for you to read and identify.
Always happy to be sent picturesof a bug if you're not sure
that's favourite pastime. I will.
Ohh, hold you to that one Chris.I guess another key aspect of of
IPM has been, has been the, the,the new development of new
(06:51):
insecticides which have got a softer profile for them, less
broad spectrum kill everything that moves and more surgical
strike only targeting those those problem insects and
leaving the beneficiaries alive.What?
What role have these new products had in developing
(07:12):
modern IBM systems? They're absolutely critical
because we are using multiple techniques to manage the pests.
If we're using a broad spectrum insecticide, it is not
compatible with that traditionalbiological control where we are
relying on those natural enemies.
So the shift towards selective insecticides means there's
(07:32):
limited harm on the natural enemies or beneficiaries within
our crops and they will then be allowed to continue in their
populations. Because what we do when we apply
a broad spectrum is we're essentially resetting the
ecology within that block. It takes time for beneficiaries
to come back in from the boundaries.
(07:52):
It takes time for their populations to grow to the point
where they can actually manage pests.
So if we use an option where they are less impacted, they're
still there within the crop, they're able to bounce back and
build their populations much quicker.
What about the role of biologicals in this space?
We are seeing more and more companies around the world
(08:13):
looking at biological alternatives to agrichemical
small molecule agrochemicals, looking at things like, you
know, microbial products or plant extracts.
What role did biological products actually have in
developing IBM systems? Good question.
So the role of biologicals, one of their assets is that they
are. If we talk of selective
(08:34):
chemistry, biologicals are oftennext level selective.
So they will target specific orders of insect, sometimes even
specific species. So certain viruses might only
attack a particular species. Strains of bacteria, say
Bacillus thuringiensis beauties might only target certain orders
(08:54):
of insects. So these are really, really high
selective options that will essentially leave beneficial
completely unscathed. What it does mean they they come
with a few drawbacks. They're often a little bit
harder for growers to use. They might not be as long
lasting, they might be unstable and UV.
(09:14):
So comes with a trade off where we may be applying them more
often and and the fact that theyare a little bit harder to use
don't last as long. We have to be really targeted
with when we use them, particularly if they're not as
efficacious. And so accurate monitoring and
scouting and seeing when good time to be applying these
(09:36):
products is really key. So we use them as that that
trend and pressure is building, but before it becomes he an
infestation and outbreak. What about the use of of of
actual insects breeding them up and releasing beneficiaries out
into the paddock? And I know a bit of a loaded
question for you because I do understand you.
(09:56):
You recently had a tour through through Bioforce.
So look, do you want to tell me about the use of actual insect
populations and then maybe even tell me a little bit around your
recent tour? I'll just, I'll go on a little
tangent and I'll come back to it.
So, so you're absolutely right. So beneficial walls are, are
great. We can invite them in then they
(10:16):
are there in the environment, but we can also breed these in
captivity and package them and formulate them in ways that
growers can deploy. So that's what you're referring
to with this commercial biological control, augmented
biological control as we sometimes call it.
So there are companies in New Zealand by force when you
mentioned being one that commercially rears a range of
(10:40):
insects. This is a really interesting
approach that has a lot of scientific rigour behind it and
has used overseas an awful lot, particularly in greenhouses
where that environment is enclosed.
You tend to see a better retention of those beneficiaries
there. I believe it has a lot of
(11:01):
application for us in outdoor crops as well.
Now the challenge comes with those biological control agents.
We release them into our crops. But what happens when when
there's no pests, when there's no food left in that crop for
that beneficial what are they gonna do?
They're either gonna die or they're gonna move outside the
crop elsewhere. So what we need to do is provide
(11:24):
some of those foods, some of theother resources they need like
habitats, nectar and pollen to try and retain them there.
So we have some work going on inthe industry trialling
increasing the floral biodiversity within or around
crops to maintain or to attract those beneficiaries.
Just on your, your visit to Bioforce question, that was
(11:46):
awesome. They're really cool, showed us
around the what was the highlight there?
They call it the snow globe. So in there they are growing
tobacco plants in order to rear a pest, which is white fly.
And from that they are breeding the biological control agent
that attacks those white fly. And you walk into this room and
(12:09):
you brush against a tobacco plant and it's like a cloud of
snow. That's why they call it the snow
globe. So really interesting visit.
You talked a little bit the around trying to encourage being
officials and, and and you sort of mentioned a little bit
around, you know, some companionplantings.
Did you want to expand on that just a little bit?
That's a very different way of of probably growing a crop than
(12:32):
what we've traditionally seen inNew Zealand.
I'm absolutely. And, and in commercial crop
production where the focus is onmaximising our productive area,
we have to think quite smartly about how we deploy this.
It's a little bit different in agarden where companion planting
has been done for, I don't know,centuries.
There's lots of space to put flowers here and there.
(12:54):
But in a commercial vegetable crop we need to be a bit
cleverer. So what are the unproductive
areas of a paddock that we can use?
We've got fence lines, headlands, there might be a, a
fiddly corner of a, a paddock where it's awkward to the
harvest, so it's less productiveand we're even spray rows where
they're often results in crop being it's dealing with more
(13:18):
compaction, mud splash and, and and traffic going over top of
it. So there are opportunities there
to incorporate flowering biodiversity, whether it's
annuals or perennials, and you've just got to look for the
unproductive areas. What impact does does IPM have
on air resistance management programmes?
Resistance is is very much the issue of airtime.
(13:40):
We are seeing the speed at whichpests, diseases and weeds are
becoming resistant to products is a lot faster than we can
actually develop new families onnew modes of action.
How does IPM help from AA resistance management
perspective? IPM was born out of the need for
(14:02):
a system to deal with resistance.
As you said, we've we've been focusing on those other
management tools, but chemical tools or insecticides in
particular are absolutely required for our current
production systems. And so a big chunk of I PM is
how we use those products appropriately.
(14:24):
So it's, it's using them when wehit certain levels thresholds of
pests within those crop, it's managing how many times we use
them. So the number of times that
those pests are exposed to that same selection pressure.
And then it's about strategies like clustering or windowing
(14:44):
depending on the crop will the industry designs ways so that no
population of pest is exposed tothe same mode of action for that
whole year. So if we when we come to
chemical control, there are still a set of rules and
guidelines that we have to follow to, to maintain that
resistance. But essentially, if we don't do
(15:05):
that, if we just throw things onWilly nilly, even if they are
selective, we will get resistant.
We will have less tools, our disposal to use and then the
loss of 1 product puts more pressure on remaining products.
So it's a runaway train of resistance.
So yeah, we have to be so careful with it.
And IPM is the best system that we have and we know to manage
(15:28):
that. Just seems to me that this is a,
if we want to ensure that we still have control programmes
20-30 years into the future, this has got to be the the way
we have to think about that ArumAirspray programmes and their
management programmes right here, right now.
Yeah, completely agree. And fortunately there's a lot of
expertise in the industry here. So not everyone needs to be an
(15:50):
expert on entomology or resistance management.
But there is a lot of resource out there to help with that in
the industry with the likes of our horticulture representatives
and things like that can guide you if you're not sure.
And even the use of crop monitoring services to provide
that information that we use to make decisions in our crops as
(16:10):
well. Or good to know that we've got
that level of support out there.Because one thing I would say
from our discussion, Chris, is this is certainly a lot more
complex and complicated than probably our old system of just,
if it moves, it dies. But I think we can both agree
this is the only way to go forward.
And if we want to continue to, to be able to to grow vegetables
(16:33):
across the country exclusively matter which market sector it
is, all of our horticultural andrural sectors, we're all going
to have to look at how we can wecan work in tandem with Mother
Nature to try and grow the best crops.
Completely agree. It's got to be, it's got to be
profitable for the grower. They need to be able to make
money. It's got to result in fordable
food for the consumer and we have to protect the environment.
(16:56):
And I think it's got to answer all those questions for it to be
a good system. And I think IPM ticks all those
boxes. Thank you very much for that
Chris, been really good to have a chat to you today.
Thank you for having me, that was great.
Thank you for joining the Blue Shield Diary.
For more information and technical advice, visit our
website. You'll find a link in our show
(17:17):
notes. Plus, if you have a topic or
anything that you might find interesting and you'd like us to
answer it on Techtalk, send us an e-mail at
podcast@pgawrightson.co dot NZ. Thanks everyone.
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