Need for soil testing and method of taking soil sample

Soil testing is done to know the level of fertility of the soil and excess and lack of major or minor nutrients.  Then after analyses of the soil sample, the various fertilizers are then added as per the requirement of the particular crop that is being planned on the land. A soil test also reveals the soil ph value, humus matter, and exchangeable acidity. The test will show how much lime is needed. With the help of soil testing, the farmer of gardener knows the right amount of fertilizer that is needed. This testing prevents the over dose of any nutrient of the soil.

In case a farmer is not aware of the soil ph in the soil. He may increase the ph value by adding more lime to the soil. This increase of ph may lead to decrease in value of iron, magnesium, copper and zinc to plants.

The soil testing also is environmentally friendly. The over use of fertilizers makes them go to underground water and will run off with rain water. The correct use of fertilizer thus saves the groundwater from pollution and environment from damage.  Also growers of fine tobacco, usually use phosphorus in the soil. But if the level of phosphorus is already high, then there is no need for adding phosphorus to soil.


Some precautions have to be taken at the time of taking soil sample. The first is that the soils have to be Soil Testing Equipment Manufacturers in India taken by shovels, hand garden trowel, or spade. The use of brass, galvanized steel or bronze should not be used for taking soil. The use of these materials will contaminate the soil sample and correct reading of the soil sample will not come.  The soil sample should be collected in clean plastic bags. The bucket should also be clean. The bucket which is already used for any fertilizer or materials should be washed thoroughly before putting soil sample in it. For correct analyses, it is essential that the soil sample is without any contamination.

Each sample should represent only one soil type. And for large areas, the sample should be taken from different points in the field or garden. For taking sample of a large field, the sub sample from different points should be taken and then they can be made into one sample. If one part of the land seems fertile and other barren land, then the soil sample from them should be taken separately.

The depth at which the soil sample is different from crop to crop and it have to be at least from 4 to 6 inch. The sub samples have to be mixed thoroughly for one soil sample. The government has established various Construction equipment suppliers in India centers for the farmers to get soil sample before planting crops. The scientific way of using soil ensures the good yield with keeping the fertility of the soil intact.

Need for soil testing and taking soil sample

A soil sample testing helps farmers know the level of nutrients in the soil. This knowledge then allows them to add some more nutrients to get the desired soil. The testing also shows weakness in the soil nutrients level, which farmers the tries to remove by adding the appropriate fertilizers. Technically speaking the soil testing provides knowledge about two vital aspects of the soil.

The first is the soil ph. This is the measurement from low ph to high ph. The low ph is called acid and high ph is known as alkaline. This information gives the kind of yield that will come from the soil. Second, the nutrient levels in the soil. The presence or lack of major nutrients such as phosphorus, calcium, potassium and magnesium give indication of fertility of the soil. In the same way, the amount of micronutrients can help to get the exact nature of the soil.

In addition to these major indicators, some specialized soil analysis can help to determine the other factors that also have major say in the yield from that soil. These factors are salinity level of soil and nitrogen presence.  Soil salinity can come in coastal areas and in soil with lot of fertilizers use. The lack of nitrogen means that nitrogen has to be added to the soil to get the good crop. Similarly presence of organic matter is also determined by special soil analysis. The addition of organic matter improves the fertility of the soil. The amount of aluminum in soil can be toxic to plants, so analysis to prevent the aluminum increase in soil also helps a farmer.

These samples are done only when some problems are observed by the farmer or there are some reasons to get the analysis of the soil for better crop yield.

It is important that proper sample of the soil is taken for accurate analysis of the soil testing.  The testing is done on the tiny fraction of the soil that represents the entire stretch of the soil for which is testing is needed. Therefore it is necessary that the sample has to reflect the entire filed or farm.

If there is difference in Compressive strength testing machine supplier the soil from the same area, the separate analysis of the each segment of the soil has to be taken.  If soil gives two different colors in same field or plant of land, then again, the different soil testing has to be done.

For accurate reading the Soil test equipment suppliers in India each sample of soil should have combination of 5 to 10 subsample of soil from the same areas, for which soil testing is needed.  There are lots of soil testing equipments. Each one is used for specific purpose. Some are used to test the sand content of the soil.  There is also an equipment to determine the moisture level of the soil.