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A recommended method to decrease soil pH is through the application of ammonium sulfate or ammonium phosphate fertilizer at around 4.5 kg (10 lb) per 9.3 m 2 (100 sq ft). Applications of fertilizer in this manner causes the soil pH to decrease making it less favorable to Texas root rot disease which prefers a more basic soil environment. [14]
Iron deficiency can be avoided by choosing appropriate soil for the growing conditions (e.g., avoid growing acid loving plants on lime soils), or by adding well-rotted manure or compost. If iron deficit chlorosis is suspected then check the pH of the soil with an appropriate test kit or instrument.
If the soil pH is above 6, then use ammonium sulfate, which will acidify the soil. Turfgrass has been shown to be most resistant to summer patch when soil pH is between 5.5 and 6. Most balanced fertility programs for Kentucky Bluegrass lawns will consist of applying two to five lbs of nitrogen/1000 sq.ft. a year. [2]
If the soil pH is too high, plants are not able to absorb many micronutrients, such as manganese and iron. When soil pH is too low, plants cannot uptake macronutrients, such as nitrogen or phosphorus.
Regardless of what nutrients are available in the soil, if the pH is not correct, your plants cannot use them.
a soil pH at which minerals become unavailable for absorption by the roots [5] poor drainage (waterlogged roots) [5] damaged and/or compacted roots [5] pesticides and particularly herbicides may cause chlorosis, both to target weeds and occasionally to the crop being treated. [6] exposure to sulphur dioxide [7] ozone injury to sensitive plants
Introducing these compounds into soil however does not ensure the alleviation of phosphorus deficiency. There must be phosphorus in the soil, but the plant must also absorb the phosphorus. Phosphorus uptake is limited by the chemical form of the phosphorus. A large portion of phosphorus in soil is in chemical compounds that plants can't absorb. [9]
Impacts of acidic water and Soil acidification on plants could be minor or in most cases major. In minor cases which do not result in fatality of plant life include; less-sensitive plants to acidic conditions and or less potent acid rain. Also in minor cases the plant will eventually die due to the acidic water lowering the plants natural pH.