How Insect Pests Identify Unhealthy Plants with Dr. Tom Dykstra
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- Опубликовано: 18 апр 2018
- In this episode of the Regenerative Agriculture Podcast, John interviews Dr. Tom Dykstra, the founder and laboratory director at Dykstra Labs, who also has advanced degrees in entomology and has worked with Dr. Phil Callahan. They talk about plant and insect communications and how plants can only see and feed on plants who are unhealthy. They also discuss Dr. Dykstra’s current day work in bioelectromagnetics, entomology, and agriculture. This episode is a truly amazing glimpse into these very fascinating areas and how they relate to plant physiology. See the complete show notes at regenerativeagriculturepodcast....
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Wow, tremendous. I'm currently studying at University of Florida and came across Dr. Dykstra's work while studying insect olfactory mechanisms. I'm super excited I was able to hear a little bit from him especially with you as the host asking the right questions! This is important work you are doing, keep up the good work
This is gold
All of AEA's podcasts are Platinum... :)
I have experienced some of this first hand. I had three identical planted containers right next to each other. The aphids wouldn't go to the plant on the left or the right. For some reason they were only interested in the plant in the center. I couldn't figure out what was going on, but thanks to Dr. Dykstra, this year I will be much more prepared.
Thanks for sharing, Gardening Junkie! We're glad you enjoyed this episode :)
- The AEA Team
I am truly grateful for you both giving this knowledge to us. Thank you.
Bioelectromagnetics is so interesting! I'd love to learn more 😁
Wow! Thank you so much for posting this video, which open my mind greatly about insect! Very true! I used attracted mosquito, insect before, at that time I had frequently flu, cold. Since I become holistically healthy , Insects do not bite me, but people around me, who are not healthy.
Dykstra-Kempf conversations are some of my favourites :)
fascinating presentation, thanks very much for this
Dear John,
I have asked you about whether you use brix in your evaluation of plant health and whether you have found a correlation between brix levels and photosynthesis levels. From my understanding of what Dr Tom just said the most practical solution to insect problems is to raise the brix levels by maximizing Photsythesis. Can you elaborate on why you do not recommend using a refractometer to your growers? From my perspective It seem like it would be a very valuable tool? I would love to hear your response.
Thank you John
Best regards
Norman
Great show.. thanks
Thanks for sharing !
Outstanding talk.
Such great info. Thanx.
It's so interesting. Does Dr Dykstra have any published journal articles that I can refer to for more details?
invaluable information.
Hmm but if you disk in your cover crops (or weed cover crops) you'll have problems later coz your soil is bare, so the little humus you have in your topsoil will get oxydized by the sun. Yes if you roll over your cover crops the top gets oxydized, but that's the point, it's to protect the topsoil from that very oxydation, isn't it ? At least that's what I learned from all the videos I watch n living soil farming on French youtube channels (François Mullet, Konrad Schreiber...). Also, if you got less than 1% organic matter in your soil (which happens a lot in Spain), will weed still grow that first year ? In France when soils are that bad, they just add as much wood chips/rameal wood as they can. In some areas of France it's free (from tree surgeons), but in others you really have to pay for it, and spreading it over 100 hectares is expensive (fuel, manpower). But in the end it's worth it. Coz through wood chips you can gain 1% of organic matter every year. With cover crops, the best you will gain I believe is 0.2% per year, if you do like 10+ different species of plants in the mix (like they do in New Zealand), but with a 1-2 species cover crop, you gain 0.1 % per year, and so it takes decades to get to a good soil where you can ditch some pesticides and a good chunk of your fertilizers. 4% organic matter in your soil seems to be the sweet spot, and veggie farmers, with smaller surfaces, will get to 8% easily with wood chips. But then they get huge veggies, they'll have to use dwarf cabbage seeds in order to have regular sized cabbage... What I don't understand is why isn't everybody doing this... You win on all fronts : you trap carbon with cover crops instead of releasing it through tillage, you use less pesticides, less fertilizers, your soil is resilient against floods, wind, droughts, so what the hell farmers, what's stopping you ? Are you THAT stuck in your old ways ?
For the more scientifically orientated grower, would it be worth him/her investing in a full spectrum camera or sensor to measure the reflected light spectrum from plants? In itself, this doesn't appear to be a fully diagnostic tool (in the same way that refractometers aren't) to determine plant health but merely an aid, which has to be interpreted as part of the total picture. Such consumer level equipment is getting better and more affordable every year but from a practical point of view do you see any quickly resizable benefit to be had?
As an aside: Any chance that spectral coloured panels could be erected to fool any passing Delia radicum, that "These are not the cabbages you're looking for!" ?
Do fruit trees grown from seeds naturally have higher brix than grafted fruit trees?
Not necessarily. Just released research shows that B9 rootstock for apple trees_ have less freeze damage on blossoms due to higher sugar levels it imparts in cells
Thanks for sharing 😊
Wow, great amazing information.
I would like to ask Dr. Tom Dykstra if there is some form of face covering that could be used to make one invisible to mosquitoes?
Found this very inspirational. Thank you Tom.
Question: During the transition period of reducing dependance on pesticides, would it be practical to grow Tobaccos, Pyrethrums etc., from which to make one's own pesticides? These are far more biodegradable than the very persistent synthtic versions. [Noteing that in concentrated form these natural pesticides are very toxic to humans too - so some protective eqipment needed.]
Great talk!! Loved it! Sharing it! What about fungal “diseases” on plants?
Thank you for sharing, Victoria P-we really appreciate that! As far as diseases go, you may really enjoy this podcast episode, Developing Disease Suppressive Soil with Jill Clapperton (ruclips.net/video/38V89DA879I/видео.html).
- The AEA Team
I have a question. Is vinegar damaging to the soil? My reason for asking is based on the fact that it does have some beneficial organisms (microbes) in it. And what about slugs and snails on the brix.
Wow! So much info and insight. Love the main point that insects only attack unhealthy plants. Couple that with 14+ Brix and you’ve got the best bug repellant ever!
Thank you both!
As you were taking about an insect having 2 or more CO2 receptors, Couldnt help but think having more than 1 helps with direction finding. Two would provide left, right data while 3 would add up and down as well.
I do have a question though. My place has lots of fire ants. Since they are insects and I assume collect emag and odor signals like the others, is there a particular frequency or molecular smell they hate? Thanks again.
I have learned that fire ants are attracted to unhealthy soil. I had fire ants all over a gardening area I recently acquired and wanted to get rid of them without pesticides. I started spraying the ground with a blend of fish hydrolysate, seaweed, baker's yeast, molasses and Spectrum soil microbe (from AEA). This area, which had been sprayed with pesticides (mostly herbicides) immediately responded. Soil water permeability, water holding capacity, better plant growth. The fire ants started evacuating. But one day I dug into the soil and overturned some of the soil, exposing deeper dirt that hadn't been improved yet. That same day the fire ants returned, but only to that small area. Since I have continued improving the soil with this spray solution the fire ants have gone. They did a mass migration. I believe the fire ants are there to do the job of soil restoration and they do it aggressively. But they will leave if it becomes healthy. Also, fire ants HATE peppermint essential oil. A few drops on their hill also causes them to relocate.
I measured sprouts and they are only 2? Does that mean seed is very deficient in nutrients as tiny sprouts just use nutrients from seed, right?
What about adding yeast to the mix? Would yeast help the microbes in the soil also?
Maggots pests:
Carrot fly
Onion fly
Pear midges
( all problems I have)
Does the brix scale of 12+ illuminate them?
Where would on the brix scale would you have to reach before attacks would stop?
Hahaha... "In a sense I'd like to pat myself on the back and think, 'at least the insects didn't get it; I'm an entomologist; that would have been embarrassing.'" ... Hilarious
What did he mention as the measurement of a healthy plant? Is it bricks method or am i hearibg wrong? Would really like to know how to get it to 14
Brix
@@Nicolasdu5 thank you!
Phosphorus and carbon raises brix, calcium stabilizes it. This has been my experience. Its easy to raise brix but a few hours or one day later it's back down. The more calcium I had in the soil the more stable the brix was. I'm glad he mentioned about plants moving sugars to the roots in front of a storm. Its important to know these things or we freak out. Plants are living systems. Modern agriculture is too mechanistic.
It'd be appreciated if you could turn subtitles to English, they're auto-generating to Korean right now. Also, apparently I am garbage since mosquitoes have always preferred me to others, even as a kid. Thanks for sharing!
It is not a shocker if you watch nature in forests. Hubas or cancers grow on stresed (broken) or unhealthy or old trees. The same seems to apply to humans.
So if insects get deseases if they're poorly nourished, does that mean that honey bees have so many problems because they feed on not healthy crops, caused by wrong soil management by many farmers?
Honey bees does not feed on health crops, they harvest pollen in the flowers and help pollination. they play a crucial role in plants reproduction
I think honeybees have so many problems because their honey, meant to nourish them through the winter, has been removed and replaced with sugar water. Sugar depresses the immune system. I think apiarists should only remove surplus honey and leave the rest for the bees themselves.
Yes, that is correct. Pollen is minerals and protein. Nectar is carbs. Honey Bees require nectar with a brix of 7 or above. Below 7 then the bumblebees will pollinate it. Low brix plants dont have enough nutrients for them. Wildflowers and flowering trees (linden) are very good sources for honeybees. Wildflower honey is very potent.
@@pureprairie1 Interesting information.
Insects don’t do well on healthy plants. 35:00
Flies love vinegar .. they are attracted to compounds of fermentation.
A swarm of locusts will eat to the roots one field while leaving the neighbor field alone ... based on brix levels
37:00
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Think the only topic Dr. Tom Dykstra now need to cover is how to discover which genre of music each crop likes the best and at what volume. 🤡