Soil sampling, processing and storage

Soil testing is an essential component of soil resource management. Each sample collected must be a true representative of the area being sampled. Utility of the results obtained from the laboratory analysis depends on the sampling precision. Hence, collection of large number of samples is advisable so that sample of desired size can be obtained by sub-sampling. In general, sampling is done at the rate of one sample for every two hectare area. However, at-least one sample should be collected for a maximum area of five hectares. For soil survey work, samples are collected from a soil profile representative to the soil of the surrounding area.

Materials required
            1. Spade or auger (screw or tube or post hole type)
            2. Khurpi  
            3. Core sampler 
            4. Sampling bags
            5. Plastic tray or bucket

Sample Collection - Pictures

Remove the surface litter at the sampling spot

Sample Collection Technique for Soil testing

To reap the real benefit of soil testing it is imperative that the soil sample be taken correctly and in a scientific way. In the lab only 60 gm soil sample is actually tested and based on this fertilisers are recomended for the entire land.

SOIL TESTING - Introduction

 The farmers find it extremely difficult to know the proper type of fertilizer, which would match his soil. In using a fertilizer he must take into account the requirement of his crops and the characteristics of the soil.

            The basic objective of the soil-testing programme is to give farmers a service leading to better and more economic use of fertilizers and better soil management practices for increasing agricultural production. High crop yields cannot be obtained without applying sufficient fertilizers to overcome existing deficiencies. 

            Efficient use of fertilizers is a major factor in any programme designed to bring about an economic increase in agricultural production. The farmers involved in such a programme will have to use increasing quantities of fertilizers to achieve the desired yield levels. However the amounts and kinds of fertilizers required for the same crop vary from soil to soil, even field to field on the same soil.