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Niko Ashkzar Industrial Town , Yazd


Saline soil is a term used to express a very high level of water-soluble salts. The amount of salt is so high that it has negative effects on plant growth and ultimately reduces the amount of salt and may even Cause plant death.

In contrast, saline soils contain very high and excess amounts of sodium, which occupy the cation exchange sites on the soil. Excess sodium reduces the quality and disrupts the physical structure of the soil, which is called dispersion.

Excess soluble salts reduce the root’s ability to absorb water, even when water is present in the soil. Water in the soil moves from more osmotic potential to less osmotic potential. In the soil solution, if the salt concentration increases, the osmotic chemical potential of the water decreases and the osmotic chemical potential of the water in the root will be higher, and as a result, according to the second law of thermodynamics, the motion is always from higher to lower potential. Therefore, similar symptoms of thirst occur in the plant. This process is called reverse osmosis.

Sulfates and chlorides of metals such as sodium-calcium and magnesium have the largest share and carbonates of these metals have the lowest share in soil salinity.

The easiest way to improve the pH level of alkaline soil is to get some acidic fertilizer and apply it according to the written instructions. Regardless of which product you choose, it is important to follow the instructions for the extract, even if it means buying additional equipment such as a dispenser or applicator to make it. This is because one brand of fertilizer may be more concentrated than the rest, so overuse can cause a sharp rise in pH.

There are few fruit and vegetable plants that grow in acidic soil. These are (I have added the optimal soil pH for each plant):

Blueberries (soil pH 4.5 to 5.5)
Beans (soil pH 6.0 to 7.0)
Broccoli (soil pH 6.0 to 7.0)
Beetroot (soil pH 6.5 to 8.0)
Garlic (soil pH 6.0 to 7.5)
Cabbage (soil pH 5.5 to 6.5)
Lettuce and other leafy vegetables (soil pH 6.0 to 7.0)
Parsley (soil pH 6.0 to 7.0)
Peas (soil pH 6.0 to 7.5)
Potatoes (soil pH 4.8 to 6.0)
Onions (soil pH 6.0 to 7.0)
Spinach (soil pH 6.0 to 7.5)

If your soil is slightly alkaline (pH between 7 and 8) you can easily grow these vegetables without modification:

Artichoke (soil pH 6.5 to 7.5)

Asparagus (soil pH 6.0 to 8.0) Brussels sprouts (soil pH 6.0 to 6.8)

And Chinese cabbage (soil pH 6.0 to 7.5)

Cantaloupe (soil pH 6.0 to 7.5)

Grapes (soil pH 5.5 to 8)

Leeks (soil pH 6.0 to 6.8)

Peas and beans (soil pH 6.0 to 7.0)

Mustard and other leafy vegetables (soil pH 5.5 to 6.8)

Orange (soil pH 6.0 to 7.5)

Peach tree (soil pH 6.0 to 7.0)

Spinach (soil pH 6.5 to 7.5)

Sugar beet (soil pH 6.0 to 8.0)

Turnip (soil pH 5.5 to 6.8)

1- Try to maintain a constant plant moisture level

2- Use balanced and balanced fertilizer.

3-. Make sure your soil is warm enough, but not too hot

4 – Do not work close to the root of the tomato plant. Kill weeds if needed, but avoid shoveling to the ground near tomatoes.

5- Check the pH of your soil before planting. Soil pH around 6.2 to 6.8 is best for tomatoes.

6- Add calcium to your soil.

7- Choose the types of tomato seeds that are less prone to flower rot.


When a soil has a SAR value above 13 (or an ESP greater than 15), it contains excess sodium, which converts it to a sodium soil. Too much sodium can cause the soil to disperse, preventing the formation of aggregates, resulting in surface sealing or scaling. Dispersion of soil by excess sodium reduces the infiltration and movement of water in the soil and also causes poor ventilation. Good aeration and water movement are both essential for the unlimited growth of plant roots. To remove surface sealing, the soil must be treated with calcium to remove sodium. One of the most common sources of calcium used to repair sodium-contaminated soils is gypsum or calcium sulfate. The gypsum enters the soil and then unsalted irrigation water is used. The amount of calcium consumed depends on the amount of sodium in the soil. Road defrost or calcium chloride (CaCl2) is also an option for soil calcium supply, but it is more expensive than gypsum and is usually not recommended due to the presence of chlorine.

No water penetration in saline soil
Due to soil dispersion, the physical texture of the soil is destroyed and water can not penetrate into the soil
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