ISO: simple formula to determine adequate number of cabinets.
hjk73
6 years ago
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Erin
6 years agomrspete
6 years agoRelated Discussions
Tapla's 5-1-1 Container Mix in More Detail
Comments (450)@dleverette When making 5:1:1 mix, I break-up the compressed chunks of peat so they pass through a 1/2" screen. I toss any sticks and such on top of the raised beds where they break down with time. Here's a tip you'll find very helpful. For large batches of 5:1:1, pour the bark onto a tarp laid on a flat surface, then wet the bark a bit. Then, add the screened peat and spread it over the bark. Add your lime on top of the peat, then put down the perlite and wet that. The trick is to use just enough water to make the mix damp when it's thoroughly mixed. Both peat and pine bark are hydrophobic (water repellent) when allowed to dry below about 20% of their water holding ability. This makes a dry 5:1:1 mix extremely difficult to rewet if you don't moisten it when you make it. The moisture in the mix diffuses, moistening the bark/ peat and "breaking" its tendency to repel water. Within 15-30 minutes of making the mix you can pot plants and water them in thoroughly w/o the frustration associated with trying to rehydrate a dry soil. FWIW, I don't use coir. As many times as I've tried it and cone comparative experiments, I've always had problems or been dissatisfied with the results. You might be interested in a comparison between peat and coir I wrote several years back: Peat vs. Coir Sphagnum peat and coir have nearly identical water retention curves. They both retain about 90-95% of their volume in water at saturation and release it over approximately the same curve until they both lock water up so tightly it's unavailable for plant uptake at about 30-33% saturation. Coir actually has less loft than sphagnum peat, and therefore, less aeration. Because of this propensity, coir should be used in mixes at lower %s than peat. Because of the tendency to compact, in the greenhouse industry coir is primarily used in containers in sub-irrigation (bottom-watering) situations. Many sources produce coir that is high in soluble salts, so this can also be an issue. Using coir as the primary component of container media virtually eliminates lime or dolomitic lime as a possible Ca source because of coir's high pH (6+). Gypsum should be used as a Ca source, which eliminates coir's low S content. All coir products are very high in K, very low in Ca, and have a potentially high Mn content, which can interfere with the uptake of Fe. Several studies have also shown that the significant presence of phenolic allelochemicals in fresh coir can be very problematic for a high % of plants, causing poor growth and reduced yields. I haven't tested coir thoroughly, but I have done some testing of CHCs (coconut husk chips) with some loose controls in place. After very thoroughly leaching and rinsing the chips, I made a 5:1:1 soil of pine bark:peat:perlite (which I know to be very productive) and a 5:1:1 mix of CHCs:peat:perlite. I planted 6 cuttings of snapdragon and 6 cuttings of Coleus (each from the same plant to help reduce genetic influences) in containers (same size/shape) of the different soils. I added dolomitic lime to the bark soil and gypsum to the CHC soil. After the cuttings struck, I eliminated all but the three strongest in each of the 4 containers. I watered each container with a weak solution of MG 12-4-8 with STEM added at each watering, and watered on an 'as needed basis', not on a schedule. The only difference in the fertilizer regimen was the fact that I included a small amount of MgSO4 (Epsom salts) to provide MG (the dolomitic lime in the bark soil contained the MG, while the gypsum (CaSO4) in the CHC soil did not. This difference was necessary because or the high pH of CHCs and coir.) for the CHC soil. The results were startling. In both cases, the cuttings grown in the CHC's exhibited < 1/2 the biomass at summers end as the plants in the bark mix. I just find it very difficult for a solid case to be made (besides "It works for me") for the use of coir or CHC's. They're more expensive and more difficult to use effectively. The fact that some believe peat is in short supply (no where near true, btw) is easily offset by the effect of the carbon footprint of coir in its trek to the US from Sri Lanka or other exotic locales. That's the view from here. YMMV Coir Study: https://sites.google.com/site/plantandsoildigest/usu-crop-physiology-laboratory/coconut-coir-studies Al...See MoreFertilizering Containerized Plants IV
Comments (332)The biological world that needs to happen in such a perfect manner and consistently is makes no use to use any organic fertilizer in containerized plants. You’d be surprise at how much money is made on that and how much money people spend. There is a lot more to it than what I said but I have spent hundreds of dollars with no good results I wish I had saved before I ever discovered this particular forum. Not a one person I know very successful with perfect growing container plants uses organic fertilizers anymore except for in ground. One good fertilizer that gives your plants everything they need is all that is needed. Then of course growing conditions plays a huge part too Mike...See MoreFertilizer Program for Containerized Plants III
Comments (150)Hey Josh, I have been been using Pro-Tekt with my Foliage Pro all winter and i can say that my plants have definately been happier than in the past... When i take my rain water and place it in my watering cans, i add the Pro Tekt first to all of the water and then stir it in. (1/4 tsp per gallon) Then i go back and add my Foliage Pro to the water. I keep it upstairs and let it warm to room temperature and then water. The combination of the two will definately help your plants and im so happy to have found my Pro Tekt. My Hydroponics dealer had to order it for me. I still can't find or he wont (says he cant..) order it for me. He looked it up and says its not available. Hmm? I still order my Foliage Pro from Ebay. They have free shipping anyway. Have fun with your Pro Tekt!!! Hope you are feeling better!!! Happy Spring AL!!! Take Care, Laura...See MoreContainer Soils - Water Movement and Retention XX
Comments (150)Yes, I stated that I'm not worried about the aluminum, all the same I won't use aluminum sulfate either. Although it may be safe, I worry about toxic levels. Just because lead is in all soils doesn't mean it's a good idea to add more. Same with aluminum. And if you mix turface without a mask, you will be exposed to it. As far as water absorption Axis noted that turface holds 95% of it's weight in water. Pumice only holds 15% and DE holds 142% Try diatomaceous earth in your tests. Optisorb is about the largest size available to home gardeners. Axis makes an excellent size, but is for commercial use only. Numerous studies document it's use as superior to most other amendments. Such as " Effects of diatomite on soil consistency limits and soil compactibility" by Ekrem Lutfi Aksakala, Ilker Anginb, , , and Taskin Oztasa Or "Effects of diatomite on soil physical properties" by the same authors. Also "Sustainable effects of diatomite on the growth criteria and phytochemical contents of Vicia faba plants." Mona M. Abdalla* Department of Botany, Faculty of Science, Ain Shams University, Cairo, Egypt. The Axis company also has great info on all amendments. As far as particle size, do a test. Fill a pot with sand, and one with gravel. Stick a pole in, and see which one gives more resistance. It seems to me gravel would. But I might be wrong? I don't know physics well enough to figure it out on paper. Ah and pumice is further dashed to the ground and called a fake, not a single user rises to defend. Well we can agree to disagree, my day job is a laboratory researcher,or was, I'm retired. If turface has various pore sizes then it is not very well made. Thanks for pointing that out. So you do not believe the manufacturer? Controlling pore size in fired clays is often accomplished with the use of polymers such as Polyethylene glycol. This process is extremely important to control how well purifiers work, or how well they hold up with the addition of salts. You are incorrect about the pore size. Yes pore sizes differs, but that process is used to make different products, and is very controlled. Turface is meant to have small pores size or it would ineffective in it's intended use. The porosity of fired clays is extremely important to have a consistent product such as fired brick used to built houses. Varying pore sizes will compromise the strength of the brick. Selling a product and manufacturing one are very different things. The pore size I reported is for calcinated clay. Range of pore sizes is from .1 -.01 microns. Median is .045 . Plants need a .2 micron minimum pore size to utilize. This info is from a study by Andreas Kalytta-Mewes, Kathrin Mattern, and Armin Reller University of Augsburg, Chair of Solid Body Chemistry Georg Armbruster Soil Laboratory. The pore analysis in the study was conducted by Quantachrome,Bavarian Institute of Applied Environmental Research and Applied Technology. Of course it appears none of these sources trump Al. Who has not provided any data at all to back his claims. Please prove to me that pore size is bigger, thinking Al is right because you sell clay products is not proof. After saying all this will turface work? Yes, it will. Works pretty good! Is it ideal? No, it's not, but what is? It's still worth trying for sure. It didn't work for me, but that means nothing. it has worked well for others. It would be nice if it allowed easier access to stored water, but it does store water, and air, and it lasts a long time, maybe 20 years. That's decent. It's a decent product, or appears to be. It would not be on the market if it didn't work. I know it's not meant for potted plants, but it is meant for grass. DE seems a better product, it has it's own problems. it is marketed though for plants more than ball fields, although it is marketed for that too. It's marketed for large commercial gardens. I use it in my garden. I use turface too for my grass, works well. Just not that well in pots for me. All i said that it didn't work for me. Sorry blame me, it's what you usually do when the mixes fail, you blame the poster. Many have said DE doesn't work for them. I actually believe them. All gardening is local. This post was edited by Drew51 on Mon, Dec 29, 14 at 15:33...See MoreMiranda33
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