My neighbour and I both grow wheat and both have Soil Health Cards, but our cards recommend different fertiliser amounts. Same village, same crop. Why is the recommendation different?
2 Answers
That is exactly how it should be, and it shows the card is working. The whole point of the Soil Health Card is that the recommendation is based on your soil's test values, not a fixed dose for everyone. Even neighbouring fields can differ in organic carbon, phosphorus, potassium, pH and micronutrient levels because of past cropping, different manure use, irrigation water and how each of you managed the land for years. If his field already has high phosphorus, his card will tell him to use less DAP, while yours might say apply the full dose. Same with nitrogen, potash, zinc and so on. So do not copy your neighbour's fertiliser bags, follow your own card for your own field. This is the difference between blanket application and soil-based application, and it is where the saving and the better yield come from. If the gap looks very large and you are unsure, take both cards to your KVK and ask them to explain the difference, but normally different soil simply means different recommendation.
Took me a while to accept this. We share a boundary but his land was paddy for years and mine was pulses, so the soil is just different. Now I follow my own card.