My First Soil reports! Need help understanding?
The Jungle Explorer
7 years ago
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The Jungle Explorer
7 years agoRelated Discussions
My soil report, any comments?
Comments (17)Your soil report looks very normal for native soil. A few thoughts on the test. First, the pH is normal for our area and you have a lot of free lime. Any attempts to lower the pH will take a LOT of sulfur or other acidifying agent to neutralize all the lime. The trees will do fine at your current pH, though. The pH tends to quickly mineralize the phosphate and ties up the iron. Consequently, soils tests usually show them to be low. However, with a clay soil, it probably has a reddish cast, which is iron oxide and in that case, you have plenty of iron, it just isn't in a soluble form due to pH, and you also probably have plenty of phosphate but again it isn't in an available form. You can sprinkle a little iron sulfate on the surface if you want, the sulfur seems to keep the iron available long enough that the plants can drink it up, but you need to reapply every year or two as it gets tied up in the soil. The best guide for that is whether the leaves show yellowing from iron chlorosis. Different varieties and rootstocks all seem to have different abilities to take in iron, and you may not need to supplement iron at all, or you may get trees that will require a lot of supplementation. You can add phosphate, but it is likely to be mineralized in the soil over time. Boron is low, which I also frequently see, but you really don't want it that low. You can add some boron, but take it easy as as a reading of 2-4 parts per million is adequate, and if you go over 4 ppm, it can quickly become toxic to the plants. Mulch will probably be the best thing you can do. As it rots, it releases organic acids that will create a shallow layer of lower pH soil and once the tree roots reach this layer, they will probably find plenty of iron and phosphate. Just add mulch, leaves, etc. and let them decompose around the trees, then refresh the layer as it breaks down. I try to mulch my trees that aren't surrounded by lawn with pine needles, and then fertilize the trees when I see signs that something is missing. If they start showing iron chlorosis, I'll add some iron sulfate. Lack of growth or pale leaves, then I'll give them a little nitrogen. Just keep them mulched and add additional fertilizer based on what the tree is telling you it needs....See MoreMy First Soil Test. Please help on Fertlizing Schedule!
Comments (7)Ah, OK, I thought perhaps I have having a bit of a psychotic break or something. Your calculation breaks down to well over 3 lbs of nitrogen (back, 4 in the front) per thousand square feet. For any synthetic (numbers like 20-10-10 will be synthetics), that's way, way, way too high. You run a very severe risk of burning the lawn and killing it off, even with the alkaline soil. I feed organically and won't exceed 1.5 lbs of nitrogen at one application--and organics aren't risky in that department. Burning is caused by an excess of salts in the lawn, and synthetics are very high in salt. That forces your lawn to reverse water out of the roots and into the soil (reverse osmosis, in other words), which renders it bone dry and kills it. Even if you got away with it, most of that nitrogen is either going to gas off the lawn, wash away into the rivers, or go into really excessive top growth. You don't want that as all three are a waste. One suggestion is to go organic, which has no salt, will help moderate your pH at the same time, and improves the soil--plus gets the N-P-K monkey off your back a bit. Oh, it also feeds gradually over time instead of one spike and then nothing. There's an entire forum about this (Organic Lawn Care) if you're interested. 'Nuff said. If you'd rather go synthetic, no more than 1 pound of actual nitrogen should be applied at one time (there are exceptions for warm season grasses, but you don't have those in Indianapolis anyway). Note, I wouldn't normally break things this way, but with an overseed coming up, I'm modifying things a bit. Others will have differing opinions and their timing isn't wrong, just different. I'm assuming you can get a fertilizer around 25-5-5 (about that of Turf Builder, Turf Builder plus Iron, and a thousand other off-name brands) for the below. There's nothing wrong with bargain fertilizer, and Vigoro does the same job somewhat cheaper. Store brand is usually one of the large companies and does the same job MUCH cheaper. If you get something different, the equations are: Take square footage in thousands (so your back yard is really 9 as I don't bother with minor decimal points, and the front is 3). Take the values from the bag as a decimal (0.25, 0.05, and 0.05). Take 1/bag value and then multiply by the square footage. That's the number of pounds per thousand square feet to apply to get 1 pound of a given nutrient. Generally I use nitrogen because that's the highest number on the bag. So 1/0.25 * 3 = 12 lbs of 25-5-5 in the front, or 4 lbs per thousand square feet of your fertilizer. That's exactly 1 lb per thousand of nitrogen. You can then calculate the other two values by: 4*0.05 = 0.20. So you're adding 0.20 lbs of phosphorous and 0.20 of potassium. Out back, 1/0.25 * 9 = 36 lbs, with the same pounds per square foot of everything going down. Or a grand total of 48 lbs over the whole lawn. OK, the math is done, we now return you to your normal schedule. In this one particular instance, you're planning on overseeding so I'm hearing that you have a weak lawn. Consequently, I'm going really high on this schedule. If you don't have a lot of bluegrass this schedule's a bit aggressive and I noted that below May 15: Apply 4 lbs per thousand square feet August 15: Use Starter Fertilizer instead to prepare for your overseeding (this isn't critical and you can use the other stuff instead if you like) September 15: Apply 4 lbs per thousand (skip if you don't have bluegrass) October 15: Same November 15: Apply either 4/thousand or use Winterizer at the correct rate (which you'll calculate) That's 5 lbs N for the year (very high), 1 lb phosphorus (more than enough) and 1 lb potassium (a bit trim, but still OK with your readings). Normally I'd never cut the September feed, but with seeding the August one will have to do. If you skip seeding and don't have bluegrass, skip August instead. Is that enough variables for you? ;-) If it's too confusing, let me know what type of grass you have and I'll take another shot at it....See MoreNeed help understanding my wiring diagram
Comments (5)So if the wire from the magneto is closed (connected) at the ignition switch, then that wire provides a path to ground at the ignition. Is this correct? Likewise if the wire from the magneto is closed (connected) at a safety switch, then that wire provides a path to ground at that safety switch. Is this correct? On the otherhand, if the ignition is at (RUN) and the safety switches are all open (unconnected), then the path of least resistance is to the spark plug. Is that correct? Is there a path to ground at each safety switch or is there some common grounding point? Can I assume that the wire circuit used by thes safety switches to stop the engine are not at all connected to the 12VDC battery? Thanks for putting up with my questions....See MoreSoil test, need help understanding results
Comments (6)One important thing to remember with fertilizers is that the ratio between the three numbers is more important than how big the numbers are. So 5-5-5 is basically the same as 10-10-10, you would have to use twice as much to get the same amount of each nutrient. So, you could use 3-2-3 as a pretty good substitute for 13-13-13, you'd just have to use about 4 times as much. Unless the soil is already very dark and rich with organic matter, it never hurts to add more. If you've already seeded a lawn, it's too late for that this season. You can do two things: use a mulching mower (or just let your clippings fly out the side chute) so they return to the soil; and you can top dress with 1/2" of fine compost in early spring. The compost is a great nutrient boost and will meet some of your fertilizing needs. I find Bermuda is so vigorous it's hard to kill, so I wonder if you need as much fertilizer as they are recommending. The first year, maybe, to get it established....See Morekokopellifivea
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