Liming the soil

August 12, 2017 17:52 | General Information About Plants

The main objective of this operation is to reduce soil acidity and bringing it as much as possible to the neutral state.Adding lime to the soil of different materials converts the chemical and biological nature of the acid soils improves their fertility.

calcareous materials

Natural backgrounds:

types of limestone;dolomite;marl;

natural dolomite flour.

industrial waste with a high content of lime:

shale ash;

belite sludge;;cement dust;

;ground blast furnace slag.

neutralizes the basis of almost all calcareous material is chalk, or calcium carbonate.The proportion of its content in various calcareous materials ranges from 100 to 96. 15 The required lime dose is determined depending on the acidity of the soil, its structure and composition, degree of hydration, and also on the types of crops, which is designed for this soil.Need soil liming considered strong at a pH of less than 3,5, average - at pH 4,3, weak at pH 4.5.With average acidity of pH 5 eliminates the need for liming.Wit

h a strong soil needs liming is recommended to make the following number of calcareous materials in terms of dry chalk (g / m2):

Strong demand 300

Average demand 200

Weak demand 100

data are adjusted depending on the type of soil and the level of acidity, which you want to achieve as a result of liming

doses of chalk for the different soil types

soils

doses of chalk (r / i

u2) at pH to

5,4-5,5

4,5

4,6

4,8

50

5,2

Sand

300

250

200

150

100

100

loamy

350

300

250

200

150

150

loamy

450

400

350

300

250

250

srednesuglinistoj

550

500

450

400

350

300

loam

650

600

550

500

450

400

Clay

700

650

600

550

500

450

it should be noted that these data are for normal soil moisture.In excessively wet soils in order to achieve an optimum level of acidity chalk dose should be increased up to 150 g / m2.Liming is usually carried out: on the average soil every 4-5 years, in the light - every 3-4 years, in hard - once in 5-6 years.It is best to make lime for Culture, responds well to liming.Particularly well perceived lime cabbage, beetroot, onion, garlic, spinach, celery and cucumbers, beans, turnips, cauliflower and carrots.

calcareous materials can be made by autumn tillage with dry organic fertilizer, evenly distributing them on the surface area.

Attention! slaked lime, cement dust, oil shale ash can not be applied simultaneously with manure as a result of their interaction stands out a lot of free nitrogen that can harm plants.

Ground limestone, dolomite flour, tuff, marl, plant ash to the soil with manure.First, on the part of the surface evenly scatter lime material is then spread manure and soil dug immediately.

share content

chalk lime materials,%

Ground limestone,

or calcium carbonate

75-

-100

Dolomite powder

55-

-100

tufa

75-

-95

headed lime

80-

-100

quicklime

17-

-18

Hydrated lime

13-

-15

Wood ash

30-

-40

peat ash

If you need a substantial rate increase soil acidity, it is better to makelime gradually, in stages and in small portions, so that it can be completely digested and processed soil.With long-term systematic introduction of lime should regularly check the level of soil acidity and liming process to continue if necessary.

When applying lime to the soil, take the necessary precautions: Wear rubber gloves and goggles, had not scattered lime on a windy day.To plow lime into the soil, it is convenient to use a pitchfork.

It should also be noted that the different soil types in varying degrees maintain a constant acid reaction.Most of the soil is characterized by a gradual tendency to oxidation.Even after carrying out measures to return the soil to a neutral pH region can begin a gradual process of oxidation.This applies particularly to sandy soils, which are generally not stable in maintaining constant performance.Chemical indicators are changing rapidly in sandy soils, since they are unable to hold himself nutrients and chemicals.This also applies to the level of acidity, so the lime in sandy soils should be applied regularly in small portions to maintain a constant pH level stable.