| Value | Category | 
                                    
                    
                        | 11 | MAIZE | 
                                    
                    
                        | 12 | RICE | 
                                    
                    
                        | 13 | WHEAT | 
                                    
                    
                        | 21 | COMPLEX | 
                                    
                    
                        | 22 | UREA | 
                                    
                    
                        | 23 | AM. SULP | 
                                    
                    
                        | 24 | POTASH | 
                                    
                    
                        | 25 | D.A.P. | 
                                    
                    
                        | 31 | GOBAR | 
                                    
                    
                        | 32 | INSECTIC | 
                            
            Warning: these figures indicate the number of cases found in the data file. They cannot be interpreted as summary statistics of the population of interest.