Chapter 31 contains 5 HSN headings (4-digit codes) covering fertilisers.
Headings in Chapter 31
3101
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
3102
MINERAL OR CHEMICAL FERTILISERS, NITROGENOUS
3103
MINERAL OR CHEMICAL FERTILISERS, PHOSPHATIC
3104
MINERAL OR CHEMICAL FERTILISERS, POTASSIC
3105
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