Natural pest control ... using bugs!

At TEDxTelAviv, Shimon Steinberg looks at the difference between pests and bugs -- and makes the case for using good bugs to fight bad bugs, avoiding chemicals in our quest for perfect produce.

I'm a bug lover, myself --

not from childhood, by the way,

but rather late.

When I bachelored,

majoring in zoology in Tel Aviv University,

I kind of fell in love with bugs.

And then, within zoology,

I took the course or the discipline of entomology,

the science of insects.

And then I thought, myself, how can I be practical

or help in the science of entomology?

And then I moved to the world of plant protection --

plant protection from insects,

from bad bugs.

And then within plant protection,

I came into the discipline

of biological pest control

which we actually define

as the use of living organisms

to reduce populations

of noxious plant pests.

So it's a whole discipline in plant protection

that's aiming at the reduction of chemicals.

And biological pest control, by the way,

or these good bugs that we are talking about,

they've existed in the world for thousands and thousands of years,

for a long, long time.

But only in the last 120 years

people started,

or people knew more and more how to exploit, or how to use,

this biological control phenomenon,

or in fact, natural control phenomenon,

to their own needs.

Because biological control phenomenon,

you can see it in your backyard.

Just take a magnifying glass. You see what I have here?

That's a magnifier times 10.

Yeah, times 10.

Just open it.

You just twist leaves, and you see a whole new world

of minute insects,

or little spiders of one millimeter, one and a half,

two millimeters long,

and you can distinguish between the good ones and the bad ones.

So this phenomenon of natural control

exists literally everywhere.

Here, in front of this building, I'm sure.

Just have a look at the plants.

So it's everywhere,

and we need to know how to exploit it.

Well let us go hand by hand

and browse through just a few examples.

What is a pest?

What damage [does] it actually inflict on the plant?

And what is the natural enemy,

the biologically controlled agent,

or the good bug, that we are talking about?

In general, I'm going to talk

about insects and spiders,

or mites, let us call them.

Insects, those six-legged organisms

and spiders or mites,

the eight-legged organisms.

Let's have a look at that.

Here is a pest, devastating pest, a spider mite,

because it does a lot of webbing like a spider.

You see the mother in between

and two daughters, probably on the left and right,

and a single egg on the right-hand side.

And then you see what kind of damage it can inflict.

On your right-hand side you can see a cucumber leaf,

and on the middle, cotton leaf,

and on the left a tomato leaf with these little stipplings.

They can literally turn from green to white

because of the sucking, piercing

mouthparts

of those spiders.

But here comes nature

that provides us with a good spider.

This is a predatory mite -- just as small as a spider mite, by the way,

one millimeter, two millimeters long, not more than that,

running quickly, hunting,

chasing the spider mites.

And here you can see this lady in action

on your left-hand side --

just pierces, sucks

the body fluids on the left-hand side of the pest mite.

And after five minutes, this is what you see:

just a typical dead corpse,

shriveled, sucked-out,

dead corpse of the spider mite,

and next to it, two satiated individuals

of predatory mites,

a mother on the left-hand side,

a young nymph on the right-hand side.

By the way, a meal for them for 24 hours

is about five individuals

of the spider mites, of the bad mites,

or 15 to 20 eggs

of the pest mites.

By the way, they are hungry always.

(Laughter)

And there is another example: aphids.

By the way, it's springtime now in Israel.

When temperature rises sharply,

you can see those bad ones, those aphids, all over the plants,

in your hibiscus, in your lantana,

in the young, fresh foliage

of the spring flush, so-called.

By the way, with aphids you have only females,

like Amazons.

Females giving rise to females giving rise to other females.

No males at all.

Parthenogenesis, [as it] was so called.

And they are very happy with that, apparently.

Here we can see the damage.

Those aphids secrete

some sticky, sugary liquid

called honeydew,

and this just globs

the upper parts of the plant.

Here you see a typical cucumber leaf

that turned actually from green to black

because of a black fungus, sooty mold,

which is covering it.

And here comes the salvation

through this parasitic wasp.

Here we are not talking about a predator.

Here we are talking a parasite --

not a two-legged parasite,

but an eight-legged parasite, of course.

This is a parasitic wasp,

again, two millimeters long, slender,

a very quick

and sharp flier.

And here you can see this parasite in action,

like in an acrobatic maneuver.

She stands vis-a-vis

in front of the victim at the right-hand side,

bending its abdomen

and inserting a single egg,

a single egg into the body fluids

of the aphid.

By the way, the aphid tries to escape.

She kicks and bites

and secretes different liquids,

but nothing will happen, in fact.

Only the egg of the parasite

will be inserted into the body fluids of the aphid.

And after a few days, depending upon temperature,

the egg will hatch

and the larva of this parasite

will eat the aphid from the inside.

This is all natural. This is all natural.

This is not fiction, nothing at all.

Again, in your backyard,

in your backyard.

But this is the end result.

This is the end result:

Mummies --

M-U-M-M-Y.

This is the visual result of a dead aphid

encompassing inside,

in fact, a developing parasitoid

that after a few minutes you see halfway out.

The birth is almost complete.

You can see, by the way, in different movies, etc.,

it takes just a few minutes.

And if this is a female, she'll immediately mate with a male

and off she goes because time is very short.

This female can live only three to four days,

and she needs to give rise

to around 400 eggs.

That means she has 400 bad aphids

to put her eggs

into their body fluids.

And this is of course not the end of it.

There is a whole wealth of other natural enemies

and this is just the last example.

Again, we'll start first with the pest:

the thrips.

By the way, all these weird names --

I didn't bother you with the Latin names of these creatures,

okay, just the popular names.

But this is a nice, slender,

very bad pest.

If you can see this, sweet peppers.

This is not just an exotic, ornamental sweet pepper.

This is a sweet pepper which is not consumable

because it is suffering from a viral disease

transmitted by those thrip adults.

And here comes the natural enemy,

minute pirate bug,

"minute" because it is rather small.

Here you can see the adult, black, and two young ones.

And again, in action.

This adult pierces the thrips,

sucking it within just several minutes,

just going to the other prey,

continuing all over the place.

And if we spread those minute pirate bugs, the good ones,

for example, in a sweet pepper plot,

they go to the flowers.

And look, this flower is flooded

with predatory bugs, with the good ones

after wiping out the bad ones, the thrips.

So this is a very positive situation, by the way.

No harm to the developing fruit. No harm to the fruit set.

Everything is just fine under these circumstances.

But again, the question is,

here you saw them on a one-to-one basis --

the pest, the natural enemy.

What we do is actually this.

In Northeast Israel,

in Kibbutz Sde Eliyahu,

there is a facility

that mass-produces those natural enemies.

In other words, what we do there,

we amplify,

we amplify the natural control,

or the biological control phenomenon.

And in 30,000 square meters

of state-of-the-art greenhouses,

there, we are mass-producing those predatory mites,

those minute pirate bugs,

those parasitic wasps, etc., etc.

Many different parts.

By the way, they have a very nice landscape --

you see the Jordanian Mountains on the one hand

and the Jordan Valley on the other hand,

and a good, mild winter

and a nice, hot summer,

which is an excellent condition

to mass-produce those creatures.

And by the way, mass-production --

it is not genetic manipulation.

There are no GMOs --

Genetically Modified Organisms -- whatsoever.

We take them from nature,

and the only thing that we do,

we give them the optimal conditions,

under the greenhouses or in the climate rooms,

in order to proliferate,

multiply and reproduce.

And that's what we get, in fact.

You see under a microscope.

You see in the upper left corner, you see a single predatory mite.

And this is the whole bunch of predatory mites.

You see this ampoule. You see this one.

I have one gram of those predatory mites.

One gram's 80,000 individuals,

80,000 individuals

are good enough

to control one acre, 4,000 square meters,

of a strawberry plot

against spider mites for the whole season

of almost one year.

And we can produce from this, believe you me,

several dozens of kilograms

on an annual basis.

So this is what I call

amplification of the phenomenon.

And no, we do not disrupt the balance.

On the contrary,

because we bring it to every cultural plot

where the balance was already disrupted

by the chemicals.

Here we come with those natural enemies

in order to reverse a little bit of the wheel

and to bring more natural balance

to the agricultural plot by reducing those chemicals.

That's the whole idea.

And what is the impact?

In this table, you can actually see what is an impact

of a successful biological control

by good bugs.

For example, in Israel,

where we employ

more than 1,000 hectares --

10,000 dunams in Israeli terms --

of biological pest controlling sweet pepper

under protection,

75 percent of the pesticides

were actually reduced.

And Israeli strawberries, even more --

80 percent of the pesticides,

especially those aimed against pest mites in strawberries.

So the impact is very strong.

And there goes the question,

especially if you ask growers, agriculturists:

Why biological control?

Why good bugs?

By the way, the number of answers you get

equals the number of people you ask.

But if we go, for example, to this place,

Southeast Israel,

the Arava area above the Great Rift Valley,

where the really top-notch --

the pearl of the Israeli agriculture

is located,

especially under greenhouse conditions, or under screenhouse conditions --

if you drive all the way to Eilat, you see this

just in the middle of the desert.

And if you zoom in,

you can definitely watch this,

grandparents with their grandchildren,

distributing the natural enemies, the good bugs,

instead of wearing special clothes

and gas masks and applying chemicals.

So safety, with respect to the application,

this is the number one answer that we get from growers,

why biological control.

Number two, many growers

are in fact petrified

from the idea of resistance,

that the pests will become resistant

to the chemicals,

just in our case that bacteria

becomes resistant to antibiotics.

It's the same, and it can happen very quickly.

Fortunately, in either biological control

or even natural control,

resistance is extremely rare.

It hardly happens.

Because this is evolution,

this is the natural ratio,

unlike resistance,

which happens in the case of chemicals.

And thirdly, public demand.

Public demand -- the more the public

demands the reduction of chemicals,

the more growers become aware of the fact

they should, wherever they can and wherever possible,

replace the chemical control

with biological control.

Even here, there is another grower,

you see, very interested in the bugs,

the bad ones and the good ones,

wearing this magnifier already on her head,

just walking safely

in her crop.

Finally, I want to get actually to my vision,

or in fact, to my dream.

Because, you see, this is the reality.

Have a look at the gap.

If we take the overall turnover

of the biocontrol industry worldwide,

it's 250 million dollars.

And look at the overall pesticide industry

in all the crops throughout the world.

I think it's times 100 or something like that.

Twenty-five billion.

So there is a huge gap to bridge.

So actually, how can we do it?

How can we bridge, or let's say, narrow, this gap

in the course of the years?

First of all, we need to find more robust,

good and reliable biological solutions,

more good bugs

that we can either mass-produce

or actually conserve in the field.

Secondly, to create even more

intensive and strict public demand

to reduction of chemicals

in the agricultural fresh produce.

And thirdly, also to increase awareness by the growers

to the potential of this industry.

And this gap really narrows.

Step by step, it does narrow.

So I think my last slide is:

All we are saying, we can actually sing it:

Give nature a chance.

So I'm saying it on behalf of all the biocontrol

petitioners and implementers,

in Israel and abroad,

really give nature a chance.

Thank you.

(Applause)