Jump to content

vkn

Members
  • Content Count

    645
  • Joined

  • Last visited

  • Days Won

    71

Reputation Activity

  1. Like
    vkn reacted to Aufin in Our experiments with IAVS..   
    Always interesting to see what is possible in the sandbeds.  Seems it's going to be a short list of what won't grow in the sandbeds. Keep up the good work .
  2. Like
    vkn got a reaction from GaryD in Donations Please.   
    Another way in reaching out Mark with direct financial aid is,
    "Use my paypal act at paypal.me/MMcMurtry123
     same as https://www.paypal.com/paypalme/my/profile?locale.x=en_US&country.x=US"
  3. Like
    vkn got a reaction from bigdaddy in Our experiments with IAVS..   
    Thank you for expressing your concerns. Several things happening around us and I have almost got sidetracked with them.  So is this delayed reply.
     
    Fortunately our location, Nanniode, is in high grounds and we did not have any adverse effect at all.  One of our aquaponics replications was submerged under water completely for a week or so.. It being a raised fish culture tank, fish are safe.  Plants were lost almost 90% except some tall peppers.  Cleaning of mud/renovation work is currently going on.  Hopefully it goes well.
  4. Like
    vkn got a reaction from ande in Our experiments with IAVS..   
    Thank you for expressing your concerns. Several things happening around us and I have almost got sidetracked with them.  So is this delayed reply.
     
    Fortunately our location, Nanniode, is in high grounds and we did not have any adverse effect at all.  One of our aquaponics replications was submerged under water completely for a week or so.. It being a raised fish culture tank, fish are safe.  Plants were lost almost 90% except some tall peppers.  Cleaning of mud/renovation work is currently going on.  Hopefully it goes well.
  5. Like
    vkn reacted to Ravnis in Ravnis Indoor IAVS   
    Update on the all purpose sand.   There is big variance between sand bags and the last ones I bought had a lot of shells in them and compacted.  I had moved the system outside for the summer.   Drainage became slower till the point it would take an hour to drain and with Daytime temps over 100F  it started killing the plants and killed the nitrifying bacteria.   This answered by personal question for myself, can flow rate be adjusted to compensate for sand that drained less that ideal.  The answer in this particular scenario of high temperatures is a resounding NO.     I have since replaced it with pool filter sand from the same company and nitrification has restarted and the plants are rebounding and putting of fruit.
    So to recap,  
    quickcrete all purpose sand --- too much variation from bag to bag and some bags had high amounts of fines in them.
    quickcrete  pool filter sand --  bought 10 bags so far- appears to be finely ground and sharp quartz crystals- good drainage, no alteration of ph, no visible signs of shells.
    The roots expand better in the pool sand than the all purpose sand , so growth is definitely better in the looser sand.  
  6. Like
    vkn got a reaction from ande in Our experiments with IAVS..   
    Arka Anamika okra cultivar is another crop we found it suitable for cultivation in domestic as well as in large scale commercial aquaponics sand culture units.

    For the aquaponics data enthusiasts,  here is some from our Arka Anamika yield trial.. Note, it is a work in progress.  Questions welcome.
    Number of plants per square meter - 9
    Minimum days to flowering - 31.97
    Days to fruit setting -  36.87
    Maximum plant height - 120.38 cm (still growing)
    Pods per plant - 20.40 (and counting)
    Pod weight per plant - 560.6 gm
    Yield per square meter - 5.045 kg
  7. Like
    vkn reacted to bigdaddy in Our experiments with IAVS..   
    Hi VKN,
    Thanks for that info, It's a good read. Similar to the MSDS sheets we have over here.
    If you are exposed to airbourne sand contaminants for large periods of time without the appropriate safety measures in place you may get silicosis. Silicosis effects the lungs and is not a very nice illness to have. Pre seventies and eighties many people died from that. It is my recollection that in the late seventies and early eighties, over here, government enforced safety laws were brought in to force commercial operators to put appropriate safety measures in place when operating a business which involved using sand blasting. This led to a move toward grit blasting. Grit blasting used a different media to sand. Appropriate safety measures still needed to be in place but the use of sand was eliminated thus the risk of silicosis was eliminated. I can not remember the exact details because I've been out of that area for quite a while but I think only family or 1 or 2 people could commercially run sand blasting businesses. I used to get my personal products sand blasted because of the finer finish sand gave.
    Fast forwarding to using sand in our operations today. The risk of breathing in airbourne sand fines and having enough on your clothes to cause any type of issues would be extremely low. If working with sand causes you concerns, then a proper risk assessment of your job can be done. Over here, if you are doing anything commercially you must carry out complete risk assessments which would include assessing the risk to health moving sand may cause and appropriate safety measures must be put in place prior to production.
    I have only mentioned using silica for sand blasting as I think that is an appropriate example of silica sand causing safety issues. There are many other industries using sand including the mining of it. I'm not sure of the mineral sand mines safety specifically but you can be assured that in Australia, all of these companies would be well and truly all over it.
    To summarize my thoughts. I think it is very good to be aware of the health and safety issues but we should be level headed about it. I don't think in a home context it will be to much of an issue I think we should do what we can to keep the dust down and be reasonably practicable when working with it. IMO this is good standard practice anyway.
    Hint: Did you know a good way to keep the dust down is to wet the sand? or be gentle with it moving moving it dry?
    Once again, thanks for sharing I enjoyed reading that info. It's always good to find out possible risks to health when using a product.
    Cheers.
  8. Like
    vkn got a reaction from ande in Our experiments with IAVS..   
    Hi Ande, I am aware of this myth and possibly another misconception regarding bottlegourd juice.  A member of the cucurbitaceae family, it is a very common vegetable in India and is a hot sell commercially.
     I have begun drinking its juice raw couple of months ago ever since I was diagnosed as mild diabetic and borderline hypertensive.  We grow this amazing vegetable all the time and family uses it cooked..
    Experts try to reveal the truth here.  Please give it a reading.  https://food.ndtv.com/health/is-drinking-lauki-juice-harmful-de-bunking-the-myth-1841589
    Also this https://food.ndtv.com/food-drinks/7-incredible-benefits-of-drinking-of-bottle-gourd-lauki-juice-1452828.
    Cheers!
  9. Like
    vkn got a reaction from GaryD in Our experiments with IAVS..   
    Chanced upon to this NFDB's Matsya Bharat Newsletter..     Several distorted information about our work and NARDC's display pictures..   Request all future journalists and writers to talk with us first and get current relevant and right info and latest pictures on the subjects related to us and other stuff that matters.   1. Great to read a good intro of Dr. Mark R. McMurtry at page 5 para 1 and pàge 11 para 13.2. 2. Happy to see NARDC team 2014 along with MPEDA doing Seabass Aquaponics Nursery demonstration event and news picture of The Hindu newspaper at page 8 para 7. 3. Exciting to see several NARDC pictures at Aquaponics in India development article page 11 para 13.2.  Plese note most all given numbers are incorrect.  Talk to us again. 4. Good to see one of the NARDC consulted projects in 2014 is featured - Anjali Aquaponics, Telangana; page 11 para 13.3 5. Surprised to see one of the NARDC trainee cum overnight commercial aquaponics consultant is also featured at page 12 para 13.4. 6. Good to see Gary and his microponics is also featured at page 14 para 15.   https://www.google.co.in/url?sa=t&source=web&rct=j&url=http://nfdb.gov.in/PDF/NEWSLETTERS/15_Matsya%2520Bharat%2520January-March%25202017.pdf&ved=2ahUKEwjqx46M6vbbAhXFs48KHeqyBlwQFjAAegQIAhAB&usg=AOvVaw0Lm6eqo_6lp0HEi75A4x2C   Over to you..
  10. Like
    vkn got a reaction from GaryD in Our experiments with IAVS..   
    Precisely 3 months and 3 days.. here is a short update from Today's Fresh Aquaponics, our CSAF #1 for Kollam district, Kerala.
    Total commercial demo build area 800 m2.
    1. Fish Nile Tilapia 7000 or so grown from 1 gram to averaging 150 grams, the highest being 220 grams on surface feeding catch.  There are bigger ones ready to begin harvests.
    2. Plants assorted.  Completed spinach and amaranth harvests as secondary crops in a pristine filter, now focussing on Arka Rakshak tomatoes, Arka Anamika okra, hybrid cucumbers including Enza Zaden, and small patches of lablab beans, snake gourds, bitter gourd, stevia, and brinjal plants.
    3. Addressing several challenges related to absconding/new operators and IPM.
    Way to go!  More later.

     

  11. Like
    vkn got a reaction from ande in Our experiments with IAVS..   
    Chanced upon to this NFDB's Matsya Bharat Newsletter..     Several distorted information about our work and NARDC's display pictures..   Request all future journalists and writers to talk with us first and get current relevant and right info and latest pictures on the subjects related to us and other stuff that matters.   1. Great to read a good intro of Dr. Mark R. McMurtry at page 5 para 1 and pàge 11 para 13.2. 2. Happy to see NARDC team 2014 along with MPEDA doing Seabass Aquaponics Nursery demonstration event and news picture of The Hindu newspaper at page 8 para 7. 3. Exciting to see several NARDC pictures at Aquaponics in India development article page 11 para 13.2.  Plese note most all given numbers are incorrect.  Talk to us again. 4. Good to see one of the NARDC consulted projects in 2014 is featured - Anjali Aquaponics, Telangana; page 11 para 13.3 5. Surprised to see one of the NARDC trainee cum overnight commercial aquaponics consultant is also featured at page 12 para 13.4. 6. Good to see Gary and his microponics is also featured at page 14 para 15.   https://www.google.co.in/url?sa=t&source=web&rct=j&url=http://nfdb.gov.in/PDF/NEWSLETTERS/15_Matsya%2520Bharat%2520January-March%25202017.pdf&ved=2ahUKEwjqx46M6vbbAhXFs48KHeqyBlwQFjAAegQIAhAB&usg=AOvVaw0Lm6eqo_6lp0HEi75A4x2C   Over to you..
  12. Like
    vkn got a reaction from bigdaddy in Our experiments with IAVS..   
    Precisely 3 months and 3 days.. here is a short update from Today's Fresh Aquaponics, our CSAF #1 for Kollam district, Kerala.
    Total commercial demo build area 800 m2.
    1. Fish Nile Tilapia 7000 or so grown from 1 gram to averaging 150 grams, the highest being 220 grams on surface feeding catch.  There are bigger ones ready to begin harvests.
    2. Plants assorted.  Completed spinach and amaranth harvests as secondary crops in a pristine filter, now focussing on Arka Rakshak tomatoes, Arka Anamika okra, hybrid cucumbers including Enza Zaden, and small patches of lablab beans, snake gourds, bitter gourd, stevia, and brinjal plants.
    3. Addressing several challenges related to absconding/new operators and IPM.
    Way to go!  More later.

     

  13. Like
    vkn reacted to ande in Our experiments with IAVS..   
    cheers
  14. Like
    vkn reacted to Aufin in Our experiments with IAVS..   
    Nice okra.  My okra is is a little behind yours by just a couple weeks.  Looking forward to picking some fresh okra once again this season.  
    The only product I'm comfortable using on a regular basis for bug control is Neem oil/water mist.  Once a week, or spot spray when a bug is spotted. 
  15. Like
    vkn reacted to ande in Special Issue on Aquaponics   
    Hi again vkn
    Wether they are familiar with IAVS or not, I wouldn't know ? They are clearly familiar with media beds, as a HP method. 
    However, I don't think media beds are used in commercial settings, in tomato production, in Europe ?
    If so, it would most probably be with LECA (Light Expanded Clay Aggregate) in the media beds.
    My guess is, that they didn't find media beds relevant, in their tomato yield study ?
    The study presented here compares tomato yield, morphological (external) and biochemical (internal) fruit quality, and overall tomato plant vitality from three different HP systems (nutrient film technique, drip irrigation system, and floating raft culture) and examines the distribution of nutrients in different parts of the tomato plant. Three replicate AP systems were set up, each incorporating the three different HP systems coupled with a separate recirculating aquaculture unit growing Nile tilapia.
    IMO it would be odd to mention/refer to IAVS/MarkMcM in this context  
    It would be cool if you had the opportunity to set up a study like that  after all you are the only commercial IAVS operator around that I know of 
    cheers
     
  16. Like
    vkn got a reaction from ande in Our experiments with IAVS..   
    Sunny day..here is a picture of the mini okra forest that we have..

    Arka Anamika, the YVMV resistant cultivar of okra (ladies finger) commercial yield trial in aquaponics sand culture at NARDC Nanniode.
    Seeds are from IIHR, Bangalore.  Progress has been good.  Harvesting in batches every other day. Plants pumping out baby okras at a good rate.  Expecting 25-30 kg per m2 or maybe more this season.  It is evident that sand culture is producing greater yields than conventional soil culture for okra.
    Observed some early stage infestation of leaf rollers, leafhoppers, fruit borers, and mealybugs and we are working on several/most all IPM ways to reduce the potential yield loss due to these pests.
    Prevention (with a capital P) is always better than cure.  Mark used to say this all the time. I am curious to know what are your organic pest management practices and wonder how you take care of your okra crop?  Any okra lovers/growers?
  17. Like
    vkn reacted to ande in Special Issue on Aquaponics   
    Hi 
    A special issue with 12 articles on aquaponics Water is an international peer-reviewed open access monthly journal published by MDPI.
    Quote :
    Special Issue Information
    Dear Colleagues,
    Aquaponics is an emerging method of local food production worldwide, using closed integrated production systems to grow vegetables and fish in a variety of contexts, including urban environments. It may be defined as an integrated, quasi closed-loop, multi-trophic food production system, comprising a recirculating aquaculture system (RAS) and a hydroponic unit, ensuring high levels of water reuse and nutrient recycling.
    Aquaponics is typically a multidisciplinary topic, covering several domains, such as aquaculture (fish feed, fish health, fish yield, fish wellbeing, sludge waste, sludge mineralization, sludge reuse, etc.), hydroponics (plant yield and growth, plant nutrition, plant nutrition through sludge recirculation, plant protection, etc.), water (water quality, water waste, water recirculation, etc.), microbiology (biological properties, microbiota characterization, population dynamic, quorum sensing, etc.), engineering for industrial and domestic uses (elaboration of production systems, sizing, modelling, monitoring of the systems, monitoring of water and water quality, automation, etc.).
    A successful development of aquaponics could insure, in the next decades, a substantial part of human food while having a neutral impact on the environment. The aim of this Special Issue is, therefore, to summarize and disseminate recent scientific findings in aquaponics. A special attention will be paid to scientific progress leading to the development of a sustainable production system.
    Prof. Dr. M. Haïssam Jijakli
    Guest Editor
     full issue.  http://www.mdpi.com/journal/water/special_issues/aquaponics/download
    1.  Strategic Points in Aquaponics
    2.  Commercial Aquaponics Approaching the European Market: To Consumers’ Perceptions of Aquaponics Products in Europe
    3.   Influence of UV Treatment on the Food Safety Status of a Model Aquaponic System
    4.   Nutrients and Energy Balance Analysis for a Conceptual Model of a Three Loops off Grid, Aquaponics
    5.   Tomato Productivity and Quality in Aquaponics: Comparison of Three Hydroponic Methods
    6.   Potential for Combined Biocontrol Activity against Fungal Fish and Plant Pathogens by Bacterial Isolates from a Model Aquaponic System
    7.   Survey of Aquaponics in Europe
    8.   Lettuce (Lactuca sativaL. var. Sucrine) Growth Performance in Complemented Aquaponic Solution Outperforms Hydroponics
    9.   Evaluation of Dicentrarchus labraxMeats and the Vegetable Quality of Beta vulgarisvar. ciclaFarmed in Freshwater and Saltwater Aquaponic Systems
    10.  Navigating towards Decoupled Aquaponic Systems: A System Dynamics Design Approach
    11. Fish Welfare in Aquaponic Systems: Its Relation to Water Quality with an Emphasis on Feed and Faeces—A Review
    12.  The Development of Sustainable Saltwater-Based Food Production Systems: A Review of Established and Novel Concepts
     
      Enjoy 
    cheers
     
  18. Like
    vkn reacted to Ravnis in Please don't feed the Bears   
    There have been numerous threads that have been derailed by people with an agenda to make others look stupid, cast doubt on others abilities,  or just cause strife.  I don't claim to know what motivates people to attack others, but it happens.
     
    I know, I know,  Moderators are supposed to fix everything.  I wish we as moderators were omnisicient , wise , and beings of great intellect, but alas we are just ordinary folk trying to keep the peace the best we can figure out how to.
     
    This is where we as the Moderation team have one simple request.   When insulted by someone that is trolling, please don't respond and feed their ego.  Most of us have much better things to do with our time than participate in backyard tinkling contests.  Don't feed the bears and they will starve or find new hunting grounds.
  19. Like
    vkn got a reaction from ande in Our experiments with IAVS..   
    "Little flower,
    but if I could understand what you are,
    root and all in all,
    I should know what God and man is."
    - Tennyson -
    These two dozen+ flower pictures are from our backyard aquaponica, Nanniode.  Early morning scout and pouring rain today, could not get more clear pictures.  If you could not correctly guess any of the plant names, let me know.
    Biodiversity is the key to sustainable food production especially when you are attempting to grow your own food.  No toxic pesticides or chemical fertilizer supplements allowed, whatsoever..


  20. Like
    vkn got a reaction from GaryD in Our experiments with IAVS..   
    1. A day for environmental reparations!  Wish you another World Environment Day..
    2. This is also the day we at NARDC had begun aquaponics journey of organic farming in 2012 and has continued its work on a daily basis to this day.
    3. Pictured is second phase works that began today at CSAF #3 Alappuzha.. Mr. Sree Nagesh, the franchise proprietor, laying the first brick at his demonstration aquaponics facility near Niranam, Kerala.

  21. Like
    vkn got a reaction from GaryD in Our experiments with IAVS..   
    For today's lunch..

    Thank you A2 for another scribble art using aquaponics brinjals..
  22. Like
    vkn got a reaction from ande in Our experiments with IAVS..   
    1. A day for environmental reparations!  Wish you another World Environment Day..
    2. This is also the day we at NARDC had begun aquaponics journey of organic farming in 2012 and has continued its work on a daily basis to this day.
    3. Pictured is second phase works that began today at CSAF #3 Alappuzha.. Mr. Sree Nagesh, the franchise proprietor, laying the first brick at his demonstration aquaponics facility near Niranam, Kerala.

  23. Like
    vkn got a reaction from ande in iAVs.info - the Integrated Aqua-Vegeculture System   
    Be more concerned about educating others, rather than being concerned about people's motives. Education is what is more important, and education is how you will make a difference rather than defensively reacting to people.  Those are your words and I agree.
    What is the turn over rate in your culture tanks?  It is a most generic question so I shall post Mark's own words here.  You'll want to move/filter 1/4 of the fish culture tank volume in 15 or minutes.. making the rate moved on a per hour basis approximately the same as the tank capacity (at effective head).
    For any questions related to the details of my system/s, I request to move/ask them in my thread.  This is to avoid repetition. Thank you.
  24. Like
    vkn got a reaction from GaryD in Our experiments with IAVS..   
    CSAF #3 has a name, logo, and a protected rain shelter cultivation structure now for its subsistence aquaponics organic farming demonstration unit in 100 m2..
    Noble Aquaponics near Mannar.. NARDC's CSAF for Alappuzha district, Kerala is coming soon!


  25. Like
    vkn got a reaction from ande in Our experiments with IAVS..   
    Most plant species thrive in aquaponics sand culture systems..
    Here are update pictures from our new yield trials at Nanniode.  A small patch of 12-week-old hybrid red lady papaya and sugarcane (as per kids request) are in the last stages of development.


×
×
  • Create New...