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This article was co-written by Andrew Carberry, MPH. Andrew Carberry has worked with school gardens and has been involved in the farm-to-school program since 2008. He is currently a Program Associate at Winrock International, specifically the Community Based Food Systems Team. copper.
There are 18 references cited in this article that you can see at the bottom of the page.
This article has been viewed 14,654 times.
In chemistry, pH is a measure of the acidity or alkalinity of a substance. The pH scale has a range of 0 to 14; pH near 0 is extremely acidic, pH near 14 is extremely alkaline, and pH 7 is absolutely neutral. In the field of horticulture and horticulture, the pH of the soil in which plants are grown can greatly affect the health and growth of plants. Although most plants tolerate a pH between 6.0-7.5, there are some plants that do best in a narrower pH range, so serious gardeners should learn the basics. for controlling pH. [1] X Research Sources[2] X Research Resources Read step 1 below to begin learning how to lower soil pH.
Steps
Conduct a pH test
- Note that the instructions in this section are general only; you should see specific instructions in the pH test kit.
- Take the amount of soil in each soil sample so that a total of 1 liter or more is enough. For most test methods, this amount of soil is sufficient.
- It is important that the soil is completely dry before testing the pH; Humidity can cause inaccurate results. [4] X Research Sources
- There are different types of test kits available, so you should read the instructions that come with the test kit. For example, some newer electronic pH testers can determine soil pH almost instantly via a metal probe. You can also collect a sample of soil and bring it to the rural development office for a free soil test.
Use methods to reduce pH
- Organic matter can also provide other benefits to the soil; The most obvious is improved soil drainage and aeration. [7] X Research Sources
- Depending on the initial pH in the soil, the amount of aluminum sulfate required can vary considerably. Generally speaking, for a plot of land about 30 square feet, you would need to use 0.5 kg of aluminum sulfate to drop 1 degree on the pH scale (for example, from 7 to 6, from 6 to 5). , etc…). [9] X Research Sources However, using too many additives can be harmful to plants, so you should consult online sources (like here) for more accurate information on how to do this. use.
- Do not use aluminum sulfate on a large scale, as this can lead to an accumulation of aluminum and aluminum toxicity in the soil. [10] X Research Source
- As noted above, compared to aluminum sulfate, you would normally need to use a relatively small amount of pure sublimed sulfur to produce an equivalent pH change. In general, you will need about 90 g of sulfur to reduce 1 pH per 30 m2 of soil. [12] X Research Resources You can consult online resources (like here) for more precise information on how to use them.
- The amount of sulfur-coated urea in fertilizers will vary, so you should read the instructions that come with the fertilizer you purchase to determine the right dosage for your garden’s needs.
- Sulfur coated urea is a slow-release fertilizer that adds nutrients gradually when plants need it instead of distributing it all at once.
- Diamonium Phosphate
- Iron sulfate
- Peat
- ammonium nitrate
- Some evergreen shrubs (such as boxwood, California lilac)
- Some species of deciduous shrubs (such as lilac, orange jasmine, kumquat)
- Some species of perennial plants (such as pick, set of pleasures)
Identify low pH soil-loving plants
- The blue color of hydrangeas grown on low pH soil is due to the chemical aluminum in the soil. When the pH of the soil is low, hydrangeas are more likely to absorb aluminum in the soil, and this phenomenon manifests itself in the color of the petals. [19] X Research Source
Advice
- Some soil amendment chemicals come in spray form.
- It is important not to overuse soil-modifying chemicals of any kind, as these chemicals can have long-term adverse effects on the soil and the environment.
- Plants that live in soil with an inappropriate pH will not grow well, because some nutrients will bind in the soil making it impossible for plants to absorb.
- The effects of elemental sulfur will last for many seasons.
- Elemental sulfur will usually be most effective when used during the spring months, and is very difficult to use once the plants are planted.
- Soil pH affects everything from drainage to soil erosion.
- Use natural compost whenever possible. This will benefit the plant by adding nutrients. Composting is a great way to utilize grass clippings and kitchen waste.
- Elemental sulfur and compost facilitate biological reactions, while aluminum sulfate and ferrous sulfate create chemical reactions.
Warning
- Excessive use of aluminum sulfate can cause soil toxicity.
- If you accidentally spill urea, aluminum sulfate or sulfur on the leaves, you need to rinse the leaves with plenty of clean water. Chemicals deposited on leaves can “burn” the leaves and harm the plant.
This article was co-written by Andrew Carberry, MPH. Andrew Carberry has worked with school gardens and has been involved in the farm-to-school program since 2008. He is currently a Program Associate at Winrock International, specifically the Community Based Food Systems Team. copper.
There are 18 references cited in this article that you can see at the bottom of the page.
This article has been viewed 14,654 times.
In chemistry, pH is a measure of the acidity or alkalinity of a substance. The pH scale has a range of 0 to 14; pH near 0 is extremely acidic, pH near 14 is extremely alkaline, and pH 7 is absolutely neutral. In the field of horticulture and horticulture, the pH of the soil in which plants are grown can greatly affect the health and growth of plants. Although most plants tolerate a pH between 6.0-7.5, there are some plants that do best in a narrower pH range, so serious gardeners should learn the basics. for controlling pH. [1] X Research Sources[2] X Research Resources Read step 1 below to begin learning how to lower soil pH.
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