Soil Health Card vs private soil test, which should I trust and use?

Both test the same soil properties, the difference is cost, speed, scope and convenience. The government Soil Health Card is free, comes with crop-wise fertiliser recommendations, and is run through accredited government labs, which makes it reliable and good enough for most field decisions. The downside is it depends on the sampling cycle in your area, so you may have to wait, and the sample is sometimes taken on a grid rather than from your exact plot. A good private lab is paid but usually faster, can test the exact sample you bring from your own field, and some offer extra tests like detailed micronutrients or water analysis. The risk with private is quality varies, so choose a reputable, accredited lab and avoid cheap unverified shops. For most farmers, use the free Soil Health Card as your base, and only pay a private lab if you need a quick result, a problem-specific test, or testing for one particular plot the scheme did not cover. Whichever report you use, the most important thing is that the sample was collected correctly, a wrong sample makes even the best lab useless. Follow the recommendation on your card or lab report and confirm with your local KVK, do not over-apply.