Soil Testing 101: What Every Farmer Must Know Before Planting

Soil testing is the first step to good farming. Yet most farmers skip it and then wonder why their crops are not performing well. A simple soil test costs between Rs 200 and Rs 500 but it can save you thousands in wasted fertiliser and poor yield. Here is everything you need to know.

What Does a Soil Test Tell You?

A basic soil test tells you the pH of your soil, the levels of nitrogen, phosphorus, and potassium, and the organic matter content. Some advanced tests also check for micronutrients like zinc, boron, and iron. All of these affect how well your crops grow and how much fertiliser you actually need.

How to Collect a Soil Sample

Collect soil from at least 8 to 10 spots in your field. Use a clean spade to dig 15 to 20 centimetres deep at each spot. Remove any grass or debris from the surface. Mix all the samples together in a clean bucket and take about half a kilogram of this mixed soil to the testing lab. Do not use rusty tools as this can affect iron readings.

Where to Get Your Soil Tested

Every district in India has a Krishi Vigyan Kendra or government agricultural office that does soil testing at very low cost. Private labs are also available in most cities and give faster results with more detailed reports. Some fertiliser companies also offer free soil testing as part of their farmer outreach programs.

When to Test Your Soil

Test your soil at least once every two to three years. The best time to test is one to two months before planting so you have time to correct any deficiencies. If you have never tested your soil before, do it this season before your next crop. The results will surprise you.