1.-This Chapter does not cover :

(a) Animal blood of heading No. 05.11;

(b) Separate chemically defined compounds (other than those answering to the descriptions in Note 2 (A) 3 (A) 4 (A) or 5 below); or

(c) Cultured potassium chloride crystals (other than optical elements) weighing not less than 2.5 g each of heading No. 38.24; optical elements of potassium chloride (heading No. 90.01).

2.-Heading No. 31.02 applies only to the following goods provided that they are not put up in the forms or packages described in heading No. 31.05 :

(A) Goods which answer to one or other of the descriptions given below :

(i) Sodium nitrate whether or not pure;

(ii) Ammonium nitrate whether or not pure;

(iii) Double salts whether or not pure of ammonium sulphate and ammonium nitrate;

(iv) Ammonium sulphate whether or not pure;

(v) Double salts (whether or not pure) or mixtures of calcium nitrate and ammonium nitrate;

(vi) Double salts (whether or not pure) or mixtures of calcium nitrate and magnesium nitrate;

(vii) Calcium cyanamide whether or not pure or treated with oil;

(viii) Urea whether or not pure.

(B) Fertilisers consisting of any of the goods described in (A) above mixed together.

(C) Fertilisers consisting of ammonium chloride or of any of the goods described in (A) or (B) above mixed with chalk gypsum or other inorganic non-fertilising substances.

(D) Liquid fertilisers consisting of the goods of subparagraph (A) (ii) or (viii) above or of mixtures of those goods in an aqueous or ammoniacal solution.

3.-Heading No. 31.03 applies only to the following goods provided that they are not put up in the forms or packages described in heading No. 31.05 :

(A) Goods which answer to one or other of the descriptions given below :

(i) Basic slag;

(ii) Natural phosphates of heading No. 25.10 calcined or further heat-treated than for the removal of impurities;

(iii)Superphosphates (single double or triple);

(iv) Calcium hydrogenorthophosphate containing not less than 0.2 % by weight of fluorine calculated on the dry anhydrous product.

(B) Fertilisers consisting of any of the goods described in (A) above mixed together but with no account being taken of the fluorine content limit.

(C) Fertilisers consisting of any of the goods described in (A) or (B) above but with no account being taken of the fluorine content limit mixed with chalk gypsum or other inorganic non-fertilising substances.

4.-Heading No. 31.04 applies only to the following goods provided that they are not put up in the forms or packages described in heading No. 31.05 :

(A) Goods which answer to one or other of the descriptions given below :

(i) Crude natural potassium salts (for example carnallite kainite and sylvite);

(ii) Potassium chloride whether or not pure except as provided in Note 1 (c) above;

(iii) Potassium sulphate whether or not pure;

(iv) Magnesium potassium sulphate whether or not pure.

(B) Fertilisers consisting of any of the goods described in (A) above mixed together.

5.-Ammonium dihydrogenorthophosphate (monoammonium phosphate) and diammonium hydrogen orthophosphate (diammonium phosphate) whether or not pure and intermixtures thereof are to be classified in heading No. 31.05.

6.-For the purposes of heading No. 31.05 the term " other fertilisers " applies only to products of a kind used as fertilisers and containing as an essential constituent at least one of the fertilising elements nitrogen phosphorus or potassium.

GENERAL

This Chapter covers most products in general use as natural or artificial fertilisers.

The Chapter does not cover lime (heading 25.22) marl and leaf mould (whether or not naturally containing small quantities of the fertilising elements nitrogen phosphorus or potassium) (heading 25.30) and peat (heading 27.03) which improve rather than fertilise the soil.

It also excludes prepared plant growing media such as potting soils based on peat or mixtures of peat and sand or of peat and clay (heading 27.03) and mixtures of earth sand clay etc. (heading 38.24). All these products may contain small quantities of the fertilising elements nitrogen phosphorus or potassium.

5 HEADINGS

31.01 - ANIMAL OR VEGETABLE FERTILISERS WHETHER OR NOT MIXED TOGETHER OR CHEMICALLY TREATED; FERTILISERS PRODUCED BY THE MIXING OR CHEMICAL TREATMENT OF ANIMAL OR VEGETABLE PRODUCTS.

31.02 - MINERAL OR CHEMICAL FERTILISERS NITROGENOUS.

31.03 - MINERAL OR CHEMICAL FERTILISERS PHOSPHATIC.

31.04 - MINERAL OR CHEMICAL FERTILISERS POTASSIC.

31.05 - MINERAL OR CHEMICAL FERTILISERS CONTAINING TWO OR THREE OF THE FERTILISING ELEMENTS NITROGEN PHOSPHORUS AND POTASSIUM; OTHER FERTILISERS; GOODS OF THIS CHAPTER IN TABLETS OR SIMILAR FORMS OR IN PACKAGES OF A GROSS WEIGHT NOT EXCEEDING 10 kg.