From its early origins to modern production, the text traces the chemistry, by‑products, and processes that turn coal gas into a valuable fertilizer. It also surveys real farm results from long‑term trials, showing how timing, soil type, and accompanying nutrients affect crop quality and residue in the soil. The focus stays grounded in practical farming, not theory alone, so readers can apply lessons to their own fields.

Readers will gain a clear view of how ammonia salts behave as a fertilizer, how they compare with other manures, and how farmers evaluate their value in different crops and rotations. The book blends historical context with hands‑on observations to help growers decide when and how to use this manure effectively.

Origins and manufacture: how sulphate of ammonia is produced from coal gas and related processes
Field results: long‑term experiments on barley, wheat, turnips, and roots across multiple sites
Quality and composition: how nitrogen, ash, and moisture affect crop feed value
Practical timing: when to apply sulphate of ammonia for best results on different soils

Ideal for farmers, agronomy students, and readers seeking a grounded, historical view of a key fertilizer and its real‑world performance.

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