Soil Testing Guide: How to Read Soil Health Cards

Why is soil testing important?

It reveals the exact nutrient status and pH of your soil, helping you apply only the required fertilizers, saving input costs and protecting soil health.

How do I collect a soil sample?

Dig a V-shaped hole up to 6 inches deep, scrape soil from the sides, repeat at 10 random spots, mix the soil together, and keep 500g of the mixture.

What is the ideal pH for agricultural soil?

A slightly acidic to neutral pH range of 6.0 to 7.0 is ideal for most commercial crops.

How do I correct highly acidic soil?

Apply agricultural lime (calcium carbonate) to the soil, which neutralizes acidity and adds calcium.

How do I correct alkaline/saline soil?

Apply gypsum (calcium sulfate) and flush the field with water to leach out excess sodium salts.

What are the primary macronutrients in soil?

Nitrogen (N) for vegetative growth, Phosphorus (P) for root development, and Potassium (K) for disease resistance and fruit quality.

How often should I test my soil?

It is recommended to test your soil once every two to three years, preferably before the sowing season of major crops.

What is organic carbon in soil?

The carbon component of organic matter (decomposed plants/manure), which acts as food for soil microbes and improves water holding capacity.

What is Soil Health Card scheme in India?

A government initiative where farmers receive a card detailing their soil nutrient status along with customized fertilizer dosage recommendations.

Can I use cow manure to improve soil health?

Yes, well-decomposed cow manure (farmyard manure) adds organic carbon, macro and micro nutrients, and restores beneficial soil bacteria.

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