Name under which chemical fertiliser is sold | Statutory description | Particulars of basic elements* | Limits of variation |
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Ammonium nitrate | Ammonium nitrate for fertilising purposes | Amount of nitrogen | Nitrogen 1/20 of the amount stated |
Basic slag | A by-product, containing phosphorous obtained in the manufacture of steel to which no addition has been made the time of leaving or after it has left the furnace | Total amount of phosphoric acid amount of the material that will pass through a British Standard Text Sieve Mesh No. 100. Amount of phosphoric acid soluble in 2% citric acid and amount of silicic acid soluble in N/2 hydro-chloric acid | Total phosphoric acid 1 %; silicic acid soluble in N/2 hydrochloric acid. Amount that will pass through a 0.5 mm sieve, 1/20 of the amount stated, limit of variation of soluble silica 1.5%; Phosphoric acid 1/20 |
Bone phosphate precipitated; decalcium bone phosphate | An insoluble calcium phosphate prepared by treating commercially pure bone with acid and precipitation of phosphate from the solution | Amount of phosphoric acid soluble in citric acid | Phosphoric acid soluble in citric acid, 1 % |
Calcium metasilicate | A by-product containing soluble silicon, for fertilising purposes | Amount of silicic acid soluble in N/2 hydrochloric acid; amount of the article that will pass through a British Standard Test Sieve Mesh No. 100 | Silicic acid soluble in N/2 hydrochloric acid; limit of variation of soluble silica 1.5% |
Compound fertiliserMixed fertiliser | A product containing one or more of the basic elements specified in the First Schedule and obtained by mixing one or more of the articles specified in the first column of this Schedule with any other substance not harmful to vegetation | Total amount of nitrogen, phosphoric acid and potash respectively soluble in water and magnesium when present | (a)Nitrogen + Phosphoric acid + Potash + Magnesium + + 0.6% where the amount stated does not exceed 8%(b)Nitrogen + Phosphoric acid + Potash + +1/15 where the amount stated exceeds 8%(c)Magnesium, 1/10 of the amount stated, where the amount stated exceeds 8%: Provided that the variation from each amount stated shall not exceed 1.75% and, where the total of the amounts stated is 25% or over, the amount of all variations taken together, after setting off deficiencies against excesses, shall not exceed 1/20 of the aforesaid total |
Muriate of potash | Potassium chloride for fertilising purposes and containing not less than 60% potash | | |
Nitrate of lime | Calcium nitrate for fertilising purposes and containing not less than 13% nitrogen | Amount of nitrogen | Nitrogen 0.5% |
Nitrate of potash | Potassium nitrate for fertilising purposes, and containing not less than 13% nitrogen and 40% potash | Amount of nitrogen and potash respectively | Nitrogen 0.5%; potash 2% |
Nitrate of soda | Sodium nitrate for fertilising purposes, and containing not less than 16% nitrogen | Amount of nitrogen | Nitrogen 0.5% |
Mineral rock phosphate | Phosphate rock from mineral calcium phosphate deposits to which no other matter has been added | Total amount of phosphoric acid; amount of phosphoric acid soluble in 2% citric acid; | Total phosphoric acid 1/20 and phosphoric soluble in 2% citric acid |
Rock phosphate | Phosphate rock from organic origin, commonly called phosphatic guano, ground and screened to pass through a specific sieve | Amount of the article that will pass through a specific sieve | Amount that will pass through the British Standard Test Sieve No. 100, 1/20 of the amount stated |
Phosphate of ammonium | Ammonium phosphate for fertilising purposes | Amount of nitrogen and phosphoric acid respectively | Nitrogen 1/20 Phosphoric acid 1/30 |
Potassium salts | | Amount of potash | (a)1% where the percentage of potash stated does not exceed 15; or(b)2% where the percentage of potash stated exceeds 15 |
Quick lime | Commercial calcium oxide | Amount of calcium oxide | Calcium oxide 1/10 of the amount stated |
Slaked lime | The product obtained by slaking burnt lime | Amount of calcium oxide | Calcium oxide 1/10 of the amount stated |
Sulphate of ammonia | Ammonium sulphate for fertilising purposes and containing not less than 21% | Amount of nitrogen; amount of free acid, if any | Nitrogen 0.3% |
Super phosphate | Phosphate rock which has been treated with sulphuric acid and containing not less than 18% phosphoric acid | Amount of phosphoric acid soluble in water | Phosphoric acid soluble in water 1/20 of the amount stated |
Sweepings | Fertilisers or a mixture of fertilisers collected from damaged bags and sold either loose or re-bagged | Total amount of nitrogen, phosphoric acid and potash respectively soluble in water | (a)Nitrogen+Phosphoricacid + Potash+ +1% wherethe amountstated doesnot exceed 8%(b)Nitrogen + Phosphoric acid + Potash + 1/10 of the amount stated, where the amount stated exceeds 8% |
Triple superphosphate (or concentrated superphosphate) | Phosphate rock which has been treated with phosphoric acid only and containing not less than 42% phosphoric acid | Amount of phosphoric acid soluble in water | Phosphoric acid soluble in water 1/20 |
Urea | Urea for fertilising purposes and containing not more than 1.5% biuret | Amount of nitrogen | Nitrogen 0.3% |