- 52
- 1 517 822
Grow Kratky
เข้าร่วมเมื่อ 10 ก.ค. 2016
B.A. Kratky Ph.D., Emeritus Horticulturist, Univ. of Hawaii-CTAHR
Cracky Flower Gardening
Zinnia and marigold flowers were planted in a pavement crack where an asphalt driveway joins the concrete pavement surrounding a utility shed in Wisconsin.
Beautiful flowers were grown with minimal maintenance. Tillage and weed control were not performed, there were no insect or disease problems, and water and fertilizer requirements were reduced as compared to normal garden culture.
At this time with the current state of knowledge, it is advised against growing edible crops with this method for food safety reasons, because there is uncertainty whether toxic chemicals leach into the road rock and soil layers from the asphalt or concrete pavement.
Beautiful flowers were grown with minimal maintenance. Tillage and weed control were not performed, there were no insect or disease problems, and water and fertilizer requirements were reduced as compared to normal garden culture.
At this time with the current state of knowledge, it is advised against growing edible crops with this method for food safety reasons, because there is uncertainty whether toxic chemicals leach into the road rock and soil layers from the asphalt or concrete pavement.
มุมมอง: 383
วีดีโอ
Kratky Approaches to Growing Hydroponic Cucumbers
มุมมอง 1.3Kหลายเดือนก่อน
Cucumbers were grown by a non-circulating hydroponic method. Various techniques and growing approaches were discussed. Nutrient solution was allowed to recede to the 5-inch level, and then, refill solution was added by dripping it into the container with a bleach bottle button dripper waterer. EC and pH of refill solutions were discussed. Here is an article on a study where cucumbers were grown...
Plum Picker
มุมมอง 6133 หลายเดือนก่อน
A simple people-powered, painting pole, plum picker is described and demonstrated. Suggestions for improvements are welcomed. Also, suggestions for use on other crops are welcomed.
Kratky-Fornof Double Action Container Seedling Transplanter
มุมมอง 1.4K3 หลายเดือนก่อน
A hand held transplanter for container seedlings is described. The device transplants and makes a hole in the soil for the next plant with a simple downward movement of the transplanter. The transplanter was granted U.S. Patent 4,736,694 in 1988. The patent has expired and may be freely used. Here is a link to the patent - patentimages.storage.googleapis.com/c5/1d/ab/b30b9917963676/US4736694.pdf
Dipstick Float Valves for Watering Plants - Part II
มุมมอง 4.5Kปีที่แล้ว
Dipstick float valves would be a convenient way to automatically add nutrient solution to long term crops. Dipstick float valves could maintain a constant level of nutrient solution in a hydroponic tank and could be installed after 40 to 50 percent of the initial nutrient solution remained in the tank. Float blocks could be crafted from extruded polystyrene and these would provide the buoyancy ...
Dipstick Float Valves for Watering Plants - Part I
มุมมอง 4.6Kปีที่แล้ว
The concept of using dipstick float valves to control the solution level in hydroponic tanks is discussed. Materials used to make these float valves are also discussed. Three dipstick float valve models were introduced and tested. When growth of the plant causes the nutrient solution in a non-circulating hydroponic tank to drop to around half of the original level, a dipstick float valve could ...
Bleach Bottle Button Dripper Waterer
มุมมอง 3.4Kปีที่แล้ว
Plants which are located away from conventional irrigation sources may be effectively watered with bleach bottle button dripper watering devices. This video describes how to make a bleach bottle button dripper waterer and discusses their characteristics and uses.
Hydroponic Growing in Roll-Out Plastic Tanks II. Ginger
มุมมอง 11Kปีที่แล้ว
Edible ginger was grown in propagation flats and slings containing growing medium which were placed in roll-out plastic tanks at The University of Hawaii - Waiakea Agricultural Experiment Station near Hilo, Hawaii. The ginger rhizomes were produced to be used as clean seed pieces for the upcoming ginger crop. Viewers may also be interested in the following youtube video on clean ginger seed pro...
Hydroponic Growing in a Roll out Plastic Tank
มุมมอง 4.7Kปีที่แล้ว
Hydroponic growing of eggplants, tomatoes and peppers in a roll-out plastic tank is described. Suggestions and comments to refine and improve this growing method are welcome. Details of the method are contained in this publication -www.ctahr.hawaii.edu/hawaii/downloads/Portable_Grow_beds_with_roll-out_Plastic_tanks.pdf
A Seedling Bench for A Home Garden
มุมมอง 2.5Kปีที่แล้ว
A 17-inch Happy Leaf Procyon 2.0 LED light fixture provided the lighting for a portable seedling bench. Lettuce and pakchoi seedlings grew equally well for about the first 2 weeks from this seedling bench and from a pole lamp with a residential LED bulb. However, as time progressed to 25 days after planting, the seedlings under the pole lamp became more etiolated and weak, whereas those on the ...
Dealing with Slugs on Hydroponic Crops
มุมมอง 3.9K2 ปีที่แล้ว
Slugs are attracted to leafy crops. In addition to searching for slugs on the foliage, hydroponic growers may also lift the tank cover and search for slugs hiding under the cover and in or on the net pots. Growers should ask their local health department if there have been documented cases of rat lungworm disease caused by accidentally ingesting a slug when eating uncooked produce. Rat lungworm...
Fertilizer Approaches for Growing Hydroponic Lettuce
มุมมอง 21K2 ปีที่แล้ว
Approaches to applying fertilizer to non-circulating hydroponic lettuce are discussed. The goal is optimum lettuce growth with maximum fertilizer efficiency. This video shows how to calculate fertilizer rates of complete hydroponic fertilizers which have a track record of growing hydroponic lettuce. Here is a link to a University of Hawaii-CTAHR article on non-circulating hydroponic methods - w...
Growing Marigolds with an Automatically Watered Kratky Hydroponic Method
มุมมอง 3.9K2 ปีที่แล้ว
A supplementary tank provides nutrient solution via a float valve to a Kratky hydroponic tank which is growing marigolds. This growing system requires minimal maintenance. This video presents beautiful classical music, marigold flowers, poetry and details for growing marigold flowers by a simple Kratky hydroponic method which does not require electrical power or pumps.
Fixing My Truncheon EC Meter
มุมมอง 5K3 ปีที่แล้ว
My Truncheon EC meter wasn't working. This video describes how I fixed the instrument.
Five Passive Hydroponic Growing Methods for Potatoes
มุมมอง 32K3 ปีที่แล้ว
This video discusses five experimental, passive, non-circulating methods for growing potatoes. These methods do not require electrical power or mechanical devices. This information was part of a 2008 seminar presented at The International Potato Center in Lima, Peru entitled 'Low Technology Hydroponic Methods for Growing potatoes in Hawaii' with co-authors M.T. Yamasaki and R.N. Ishizu. The 'wr...
Growing Potatoes by Hydroponic and Sub irrigated Plastic Bag Methods
มุมมอง 12K3 ปีที่แล้ว
Growing Potatoes by Hydroponic and Sub irrigated Plastic Bag Methods
Outdoor Growing of Clean Edible Ginger Seed by a Pot in Pot in Pot Sub irrigation Method
มุมมอง 33K3 ปีที่แล้ว
Outdoor Growing of Clean Edible Ginger Seed by a Pot in Pot in Pot Sub irrigation Method
Unique Rainshelters for Vegetable Production
มุมมอง 4.9K3 ปีที่แล้ว
Unique Rainshelters for Vegetable Production
Growing Cucumbers in Plastic Water Bottles
มุมมอง 50K4 ปีที่แล้ว
Growing Cucumbers in Plastic Water Bottles
Three Non-Circulating Hydroponic Methods for Growing Lettuce (Re-enactment of Symposium Talk)
มุมมอง 41K5 ปีที่แล้ว
Three Non-Circulating Hydroponic Methods for Growing Lettuce (Re-enactment of Symposium Talk)
Auto watering Kratky Hydroponic Tanks to Grow Multi cuttings of 'Adagio' Arugula
มุมมอง 27K5 ปีที่แล้ว
Auto watering Kratky Hydroponic Tanks to Grow Multi cuttings of 'Adagio' Arugula
Protect Your Hands from Sun Damage with Socka Shaka Gloves
มุมมอง 2.5K5 ปีที่แล้ว
Protect Your Hands from Sun Damage with Socka Shaka Gloves
Kratky's Vegetable Garden in Hawaii 2019
มุมมอง 41K5 ปีที่แล้ว
Kratky's Vegetable Garden in Hawaii 2019
Growing 'Adagio' Arugula with a Suspended Pot, Non Circulating Hydroponic Kratky Method
มุมมอง 20K5 ปีที่แล้ว
Growing 'Adagio' Arugula with a Suspended Pot, Non Circulating Hydroponic Kratky Method
History of the Suspended Pot, Non Circulating 'Kratky' Hydroponic Method
มุมมอง 33K6 ปีที่แล้ว
History of the Suspended Pot, Non Circulating 'Kratky' Hydroponic Method
Volcanic Injury to Vegetables on Hawaii Island at Different Distances from the Kilauea Volcano
มุมมอง 1.2K6 ปีที่แล้ว
Volcanic Injury to Vegetables on Hawaii Island at Different Distances from the Kilauea Volcano
Another amazing video! How does this method compare with the one using water bottles you shared previously? Which one do you think is better? Thank you!
Im here because of @KeepOnGrowin . Im glad he made a video about you, because now I have a voice for the OG.
Welcome! Mike is such a positive force for growers. I hope you will try a dipstick float valve on one of the methods you learned from him.
Dr Kratky, if you'd like to beautify any area, all you have to do is be in that area. Job done! But, these flowers are a great second!
Thank you!
A few plants really make any place made by humans beautiful. Great job Dr.kratky
Thank you!
Happy Thanksgiving, Kratky! Thank you for sharing!!
Thank you and Happy Thanksgiving to you also!
I have a flagstone path I have been toying with trying this. Beautiful! SE NM zone 7b.
Good luck with your future project!
Thank you very much for this info ❤
Where do you get the foam covers for your mixing bins (growing bins)? Do you get them pre-cut to size or do you get large foam sheets and cut them to size? Thank you for the videos on Kratky method, I use it here in the Pacific to grow vegetables at home.
This is awesome. Very helpful tool and could be just the type of thing for some people that need solutions for adaptive gardening
Thanks for the great information. I’d like to try the newspaper method, but live in an area where our association sprays our grass with no telling. Could I use straw instead of the dead grass? If so, any particular type better than others? Thanks so much again!
Actually, I think straw would be better than dried grass. I am only familiar with oats straw and it should be very good.
Thank you Sir. Another informative video.
The problem with that setup is rain dilution. Here in Florida we get some real frog-chokers. All the rain that falls on that lid goes right into the tank.
The choices for a rainy climate are to grow under a rainshelter or to use a container with a domed lid.
Clever use of the button dripper, I have always used either your fill-once-and-forget method or float valve refill method. Cucumbers are so fun to grow. I like to clip 6 to 8 inches off the tip of an actively growing vine and root it as a replacement plant. This helps with perpetual growing.
Thanks for sharing your experience, Matt!
A million thanks for all the innovation and inspiration.
Thanks 🎉
Thanks for sharing! I hope to give outdoor kratky a try next summer. I live in Canada so outdoor season is short. Growing 2 parthenocarpic cucumber varieties in my indoor grow tent right now and hope to have some cukes soon!
Thanks.
Much appreciated… thanks
Thank you.
Thank you for another great video, I'm in New Zealand and looking at setting up a a refilling DWC for gherkins this weekend... I might just copy what you have put in this video + my aquarium bubbler
Thank you. I visited your great country about 20 years ago to attend a hydroponic conference and took the opportunity to visit various locations on both the North and South Islands.
Thank you so much for another great video. I’ve started Kratky method outside under cover (looks like Gypsies live here). I’m obsessed and excited as most of my plants are doing great … spinach .. basil .. dwarf tomato .. dwarf capsicum .. and coriander.. I keep referring to your videos… and can’t wait for the next one … Sydney … Australia 🇦🇺… blessings to you 👋
Thank you. By the way, I spent a 6 month sabbatical at UQ-Gatton in 2000 and had the opportunity to visit your great city.
Very nice. I'm going to do this under LED lights in my basement grow room this winter. What variety of cucumber did you grow?
I think it was GVS 18249, but didn't list it in the video, because there is a chance that I might have mixed it up with another cucumber batch.
doesn't work for me, sorry
Thanks, anyway, for having a look at it!
Thank you for another great video! Did you do, or have you done any pest mitigation for hydroponic grows? If so, what methods did you use? Cheers!
Thank you! I didn't apply any pesticides to this crop as there weren't any major insect or disease issues. Generally, pest problems on foliage are similar for both hydroponic and soil-grown crops.
Thank you sir. I have a off grid garden on my boat using what you developed
Wow on your boat that's different
I'm only worried about microplastics :(
An alternative is to use glass containers as growing tanks, but they will be more expensive and not as convenient as growing in plastic tanks.
@@growkratky5558 blacked out old aquariums :D
I think I actually get how this one works, thanks for the detailed video Prof Kratky :). Looks like a 15 ml centrifuge tube to fit in a 3/4 inch schedule 40 pipe?
Thanks for sharing.
Hi, Found your video by accident. I like how you tried different experiments. One thing I did not understand in newspaper and papertowel method is, where are the potatoes growing? Is it on top of the tray itself? So basically the roots hang down the tray and potatoes grow on top.
Would like to see more detail on how the float valve is assembled. I don't understand how it works yet. I've done autosiphons before but what pieces do I need to assemble one?
Check out my TH-cam on "A yogurt container float valve".
Hi dr! I just stumbled upon your channel as I’m looking into the Kratky method. This video really highlights your teaching skills and practical advice for anyone looking to emulate it. Please continue inventing and sharing your insights as future audiences continue to adapt your way of agriculture.
So wholesome! ❤
This video is amazing
Nice to see you are still creating and having fun.
Thanks, Matt. Yes, it is fun to design and build a tool that works and a big bonus is to share on TH-cam and get feedback!
👍
Congrats on your 50th video!! Absolutely love what you do. Thanks again!
Thank you!
Dr. Kratky, greetings from Brazil. Here, specifically for mangos, a picker was developed using a metal rim with a V shaped blade fixed to it by a screw, on the opposite side of the pole, used to cut the peduncle. The bag has velcro on the edges so it can easily be removed to transport the harvest. I wish I could show you a picture... Hope it gives you some ideas!
Thank you very much! Your description is excellent and gives me ideas to redesign the picker for next year's crop!
🙏
Clever and useful DIY tool!
Thanks, Matt!
Begging your pardon but the roll out tanks always seem to have lumber or cement blocks along the sides, even though they are clipped to the inside flats. I think accepting solid sides as necessary is probably for the best
You are correct, but I would like to at least aspire to a method without solid sides and that would probably require some sort of internal support.
you changed my life . now everybody i meet gets to know about kratky hydrophonics . it became a religion haha the way of kratky
Thank you! Glad to hear!
Me too! Totally following the ways :)
Thanks
Thank you! 10 months without a video is way too long!
Sorry, I have been slacking!
Great now he is wasting more plastic to make a video for you, be ashamed!
Very nice your technology
I just use a electrical pipe with a funnel to plant seeds…😊
That's a great idea!
😃 👍
Thanks.
I have a question Dr Kratky about the impact of varying level of water head on the float valve's ability to maintain the level. Let's say at the start, the supply tank was completely full giving 20" of water head as measured from the bottom of the grow tank and the valve maintained a level of 4" of nutrient in the grow tank. After some time, the supply tank become half empty giving 15" of water head now. Will the float valve still maintain 4" of nutrient in the grow tank in the face of decreased buoyancy pressure requirement to stop the flow from the button dripper ?
Good question! The full tank results in somewhat more water pressure than a half tank and causes the water to rise higher. For example, when a graduated centrifuge tube is the float mechanism, a full tank might cause the tube to exert 10 cc's to counteract the pressure, whereas the half tank might only require 8 cc of buoyancy and so the water level would rise higher for the 10 cc buoyancy than the 8 cc buoyancy. Water height wouldn't be affected much by a large area float such as in the yogurt container float valve, but would be more pronounced in a float mechanism with a small area.
Thank You.
Does the 0.6 lb of magnesium sulfate per gallon make a solution of a N:S ratio of 10:6? I want to make sure that I'm maximizing the phenethyl isothiocyanate.