| STRAITEN | Restrict nitrates' distribution (8) |
| TRAINSET | Nitrates (anag) - Hornby product? (5,3) |
| TOPDRESS | Superficially add nitrates to iron, comprising 25% of diet (3-5) |
| AMMONIUM | ___ nitrate, ingredient in fertilisers (8) |
| ISOMORPH | Sodium nitrate and calcium sulphate? (8) |
| INTERACT | To have a reciprocal effect on carbon in nitrate solution (8) |
| TEASTRAINER | Nitrates are formulated as one to hold back leaves (3,8) |
| ATACAMA | Chilean desert, rich in nitrates |
| ANGINA | Chest complaint treated again with nitrates, primarily |
| FERTILISER | Any substance such as manure or a mixture of nitrates used to improve soil (10) |
| VETCH | Common -; scrambling purplish wildflower and forage crop on the RHS "perfect for pollinators" list, used as a soil fertiliser due to its ability to make its own nitrates (5) |
| CALICHE | A mineral deposit of gravel, sand and nitrates, found in the Atacama desert (7) |
| FRIGHTENED | Terrified by freight travelling with leads, nitrates, explosives, dynamite (10) |
| ENRICH | Fertilise with first of extra nitrates raking in compost hard (6) |
| TEARSINTO | Unstable nitrates - central ingredient of explosive to produce slates |
| CORNEDBEEF | Meat which has been treated with large-grain rock salt, and nitrates, which give it a pink colour (6,4) |
| SWEATER | Make something out of weak nitrates somehow (4,1,7) |
| KNITA | Make something out of weak nitrates somehow (4,1,7) |
| BEAKER | Potassium nitrate's back in exhibit's glass jar (6) |
| AMYL | Nitrate predecessor |
