Read the soil.
Then choose the solution.

A field does not become more productive simply because more inputs are applied. Good decisions start with a diagnosis of what the crop needs, what the soil already contains and what can be supplied at the right time.

A soil baseline is more useful than an assumption.

Visual symptoms may point to a problem, but different causes can produce similar signs. Poor drainage, drought, disease and nutrient imbalance can all affect plant development. A soil test, field history and observations about the crop can help distinguish what is known from what still requires agronomic judgement.

Useful questions include the sampling method, which part of the field was sampled, how recent the results are, and whether a qualified local adviser has interpreted them against the specific crop and soil. A test result without context can be easy to misread.

Crop stage matters as much as the product label.

Even when a nutrient limitation is established, timing, application method, available moisture and interactions with other management decisions affect the response. The same proposed input may not be appropriate across different farm systems or seasons. Careful planning looks at the full production cycle, not a single point of purchase.

IAG describes soil diagnostics, crop-stage signals and agronomy-informed nutrient planning as elements of its agricultural intelligence platform. Those are group-level capabilities; a particular service or product should never be assumed to be available or approved in a country without local confirmation.

Make the decision traceable.

For an agricultural partnership, preserve the source of the soil data, the recommendation, the responsible adviser, the proposed input specification and the intended observations after application. This helps teams review assumptions, compare results across the season and identify what to improve.

Grayson's West Africa regional remit provides a route for discussing these field and partner requirements in the wider IAG context. It is not evidence that any specific field study or soil programme has been implemented by him.

Related IAG reading: Agri Intelligence & Technology and Agri Inputs & Innovation.