DRAFT AMENDMENT OF THE OFFICIAL STANDARDS FOR ORDINARY FERTILIZERS  
 
1. The minimum content of main nutrients, the maximum permissible content of toxic substances  and other limited particulars in the following seven  
types of Ordinary Fertilizers are conside red to be amended or established  in the Official Standards pursuant to the provision of the Article 3.1 of the 
Fertilizer Control Law.  
 
 (Amend ment  of the Official  Standard for the following fertilizer s) 
Phosphate Fertilizer s with six -year-term of validity  of registration  
Type of fertilizer  
 Minimum content  
of main nutrients (%) Maximum permissible content  
of toxic substances (%) Other limited particulars  
 
Fused silicate phosphate  
 (any of the following fertilizers:  
1. A fused mixture of phosphate ore, 
quartzite, limestone and materials 
containing magnesium;  
2. A fused mixture of materials for 
the fused silicate phosphate 
mentioned in 1 and  materials 
containing manganese or borax .) 
 1. Citric acid -soluble phosphoric acid  
6.0  P2O5 
Alkalinit y  40.0  CaO or  CaO+MgO  
Acid -soluble silicic acid  30.0  SiO 2 
Citric acid -soluble magnesium  
                       12.0  MgO  
2. For a fertilizer with guaranteed citric 
acid-soluble manganes e or citric acid -
soluble boron  in addition to citric acid -
soluble phosphoric acid , alkalinity, 
Acid -soluble silicic acid , and Citric 
acid-soluble magnesium : 
In addition to the nutrient mentioned in 
1, 
For citric acid -soluble manganes e 
0.1  MnO  
For citric acid -soluble boron  
0.05  B 2O3 ［omission］ ［omission］ 
  notes: part to be revised is underlined.   
Organic  Fertilizer s with three -year-term of validity of registration  
Type of fertilizer  
 Minimum content  
of main nutrients (%) Maximum permissible content  
of toxic substances (%) Other lim ited particulars  
 
Mixed  organic fertilizer  
(any of the following fertilizers:  
1. A mixture of organic fertilizers 
and organic fertilizers, rice bran, 
fermented rice bran, dried algae 
(powder), tansy waste, or poultry 
waste (limited to charcoal of 
poultry waste) ; 
2. ［omission］) ［omission］ ［omission］ ［omission］ 
  notes: part to be revised is underlined.  
  
Compound  Fertilizer s with six  -year-term of validity of registration  
Type of fertilizer  
 Minimum content  
of main nutrients (%) Maximum permissible content  
of toxic  substances (%) Other limited particulars  
 
Complex fertilizer  
 (any of the following fertilizers:  
1.～2. ［omission］ 
 
(before)  
3. A chemical react ed mixture of  
fertilizers  (excluding  fused sludge 
ash compound  fertilizer , mixed 
sludge compound  fertilizer  and 
sludge  fertilizers ) or materials for 
fertilizers  (excluding  sludge a nd 
guts of fish and shellfish );  
 
(after)  
3. A chemical reacted mixture of 
fertilizers  (excluding  mixed 
sludge compound  fertilizer  and 
sludge  fertilizers ) or materials for 
fertilizers  (excluding  sludge a nd 
guts of fish and shellfish ); 
 
4.～5. ［omission］) ［omission］ ［omission］ ［omission］ 
 
 
  
Compound Fertilizer s with three -year-term of validity of registration  
Type of fertilizer  
 Minimum content  
of main nutrients (%) Maximum permissible content  
of toxic substances (%) Other limited particu lars 
 
Mixed sludge compound  fertilizer  
(A granulated or molded mixture of 
fermented sludge fertilizer  (limited 
to concentrated, digested, 
dehydrated, or dried sludge obtained 
from treatment excrement sewage 
plants was piled, decayed, and aged)  
and the nit rogen fertilizers, 
phosphate fertilizers, potash 
fertilizers, organic fertilizers, 
compound fertilizers, calcium 
fertilizer s, silicate fertilizers 
(limited to silica gel fertilizer ), 
magnesium fertilizers, manganese 
fertilizers, boron fertilizers, or 
micro -element compound fertilizers ) ［omission］ ［omission］ 1. ［omission］ 
 
(before)  
2. Fermented sludge fertilizer  
must be used less than 
20% of the total weight of 
mixed sludge compound  
fertilizer  when calculated 
as dry fermented sludge 
fertilizer . 
 
(after)  
2. Fermented sludge fertilizer  
must be used less than 
40% of the total weight of 
mixed sludge compound  
fertilizer  when calculated 
as dry fermented sludge 
fertilizer. 
  
(Establish ment  of the Official  Standard for the following fertilizer s) 
Phosphate Fertilizer s with three -year-term of validity of registration  
Type of fertilizer  
 Minimum content  
of main nutrients (%) Maximum permissible content  
of toxic substances (%) Other limited particulars  
 
Fused sludge ash silicate  phosphate 
fertilizer  
(A fused mixture o f the calcin ated 
sludge of  end -treatment plants of 
sewerage and fertilizers  or materials 
for fertilizers ) 
 Citric acid -soluble phosphoric acid  
5.0  P 2O5 
Alkalinity     45.0  CaO or CaO+MgO  
Acid -soluble silicic acid    30.0  SiO 2 
Citric acid -soluble magnesi um 
                       12.0  MgO  
 Per 1.0% P 2O5 of citric acid -
soluble phosphoric acid : 
Arsenic            0.004  As 
Cadmium        0.000 15  Cd 
Nickel              0.01  Ni 
Chromium            0.1  Cr 
Mercury          0.000 1  Hg 
Lead              0.006  Pb 
 1. Particle -size of the 
fertilizer must pass through 
a wire sieve with 2 
millimeter openings.   
2. The fertilizer must be 
recognized not to be toxic 
to plants as a result of 
vegetation experiment on 
toxicity to plants.  
3. The fertilizer must use  
“the certified ingredient ”   
which was confirmed by 
the Minister of 
Agriculture, Forestry and 
Fisheries to have been 
produced in processing 
plants  which can ’t be 
contaminated with bovine 
vertebral column and cattle 
which didn ’t go through  
slaughter .  
  
Compou nd Fertilizer s with three -year-term of validity of registration  
Type of fertilizer  
 Minimum content  
of main nutrients (%) Maximum permissible content  
of toxic substances (%) Other limited particulars  
 
Mixed  animal waste  compound  
fertilizer  
(A granulated  or molded mixture of 
animal waste (limited to heat-dried  
waste  of cattle and hog ) and the 
nitrogen fertilizers, phosphate 
fertilizers, potash fertilizers, organic 
fertilizers, compound fertilizers, 
calcium fertilizer s, silicate fertilizers 
(limited to sil ica gel fertilizer ), 
magnesium fertilizers, manganese 
fertilizers, boron fertilizers, or 
micro -element compound fertilizers ) 
 1. The total  of two or more of the largest 
nutrient contents of each nitrogen, 
phosphoric acid or potassium  
10.0% N+P 2O5, N+K 2O, P 2O5+K 2O, 
or N+P 2O5+K 2O 
2. (1) For a fertilizer with guaranteed
 total nitrogen:  
Total nitrogen          1.0  N 
(2) For a fertilizer with guaranteed
 ammoniacal nitrogen:  
Ammoniacal nitrogen    1.0  N 
(3) For a fertilizer with guaranteed
 nitrate nitrogen:  
Nitrate nitrogen          1.0  N 
3. (1) For a fertilizer with guaranteed
 total phosphoric acid:  
Total phosphoric acid         
                   1.0  P2O5 
(2) For a fertilizer with guaranteed 
citric acid -soluble phosphoric acid:  
Citric acid -soluble phosphoric acid            
1.0  P2O5 
(3) For a fertilizer with guaranteed 
citrate -soluble phosphoric acid:  
Citrate -soluble phosphoric acid           
1.0  P2O5 
(4) For a fertilizer with guaranteed Per 1.0% of the total  of the 
largest nutrient content of each 
nitrogen, phosphoric acid and 
potassium : 
Thiocyanates   0.005   NH 4SCN 
Arsenic            0.002   As 
Nitrous acid      0.02  HNO 2 
Biuret nitrogen       0.01  N 
Sulfamic acid  
            0.005   NH 2SO 3H 
Cadmium       0.000075   Cd 
Nickel             0.005   Ni 
Chromium           0.05  Cr 
Titanium            0.02  Ti 
Mercury         0.00005   Hg 
Lead              0.003   Pb 
 1. The fertilizer made from 
both types o f fertilizer 
containing citric acid -
soluble phosphoric acid 
and fertilizer containing 
citrate -soluble phosphoric 
acid must be guaranteed 
with either citric acid -
soluble or citrate -soluble 
phosphoric acid.  
The fertilizer with 
guaranteed acid -soluble 
mangane se must be made 
from a fertilizer with 
guaranteed acid -soluble 
manganese.  
2. Animal waste ( limited to 
heat-dried waste  of cattle 
and hog ) must  be 
guaranteed with  nitrogen  
more than 2.0% and with 
the total  of nitrogen , 
phosphoric acid and 
potassium  more tha n 5.0% 
when calculated as dry  
animal  waste . 
3. Animal waste ( limited to  
water -soluble phosphoric acid:  
Water -soluble phosphoric acid           
1.0  P2O5 
4. (1) F or a fertilizer with guaranteed  
total potassium:  
Total potassium      1.0  K2O 
(2) For a fertilizer with guaranteed 
citric acid -soluble potassium:  
Citric acid -soluble potassium    
                    1.0  K2O 
(3) For a fertilizer with guaranteed 
water -soluble potassium:  
Water -soluble p otassium        
               1.0  K2O 
5. Fo r a fertilizer with guaranteed acid-
soluble silicic acid:  
Acid -soluble silicic acid          
                     10.0  SiO 2 
6. (1) For a fertilizer with guaran teed 
citric acid -soluble  magnesium:  
Citric acid -soluble magnesium   
                   1.0  MgO  
(2) F or a fertilizer with guaranteed  
water -soluble  magnesium:  
Water-soluble magnesium        
1.0  MgO  
7. (1) F or a fertilizer with guaranteed  
acid-soluble m anganese:  
Acid -soluble manganese        
                       0.10  MnO  heat-dried waste  of cattle 
and hog ) must be used less 
than 70% of the total 
weight of mixed animal 
waste  compound  fertilizer  
when calculated as dry  
animal  waste .  
(2) For a fertilizer with guaranteed 
citric acid -soluble manganese:  
Citric  acid-soluble manganese    
0.10  MnO  
(3) F or a fertilizer with guaranteed  
water -soluble manganese:  
Water -soluble manganese       
                       0.10  MnO  
8. (1) F or a fertilizer with guaranteed  
citric acid -soluble boron:  
Citric acid -soluble boron        
               0.05  B2O3 
(2) For a fertilizer with guaranteed  
 water -soluble boron:  
Water -soluble b oron           
                  0.05  B2O3 
  
Compound Fertilizer s with three -year-term of validity of registration  
Type of fertilizer  
 Minimum content  
of main nutrients (%) Maximum permissible content  
of toxic substances (%) Other limited particulars  
 
Mixed  compost compound  fertilizer  
(any of the following fertilize rs: 
1. A heat-drying with  granulated or 
molded mixture  of compost  
(limited to compost which 
mainly  made from animal and 
poultry waste  or organic matter of 
food origin ) and the nitrogen 
fertilizers, phosphate fertilizers, 
potash fertilizers, organic 
fertili zers, compound fertilizers, 
calcium fertilizer s, silicate 
fertilizers (limited to silica gel 
fertilizer), magnesium fertilizers, 
manganese fertilizers, boron 
fertilizers, or micro -element 
compound fertilizers ;  
2. A heat-drying with  granulated or 
molded mi xture of compost  
(limited to compost which 
mainly  made from animal and 
poultry waste  or organic matter 
of food origin ) and the nitrogen 
fertilizers, phosphate fertilizers, 
potash fertilizers, organic 
fertilizers, compound fertilizers, 
calcium fertilizer s, silicate 1. The total  of two or more of the largest 
nutrient contents of each nitrogen, 
phosphoric acid or potassium  
10.0% N+P 2O5, N+K 2O, P 2O5+K 2O, 
or N+P 2O5+K 2O 
2. (1) For a fertilizer with guaranteed
 total nitrogen:  
Total nitrogen          1.0  N 
(2) For a fertilizer with guaranteed
 ammoniacal nitrogen:  
Ammoniacal nitrogen    1.0  N 
(3) For a fertilizer with guaranteed
 nitrate nitrogen:  
Nitrate nitrogen          1.0  N 
3. (1) For a fertilizer with guaranteed
 total phosphoric acid:  
Total phosphoric acid         
                   1.0  P2O5 
(2) For a fertilizer with guaranteed 
citric acid -soluble phosphoric acid:  
Citric acid -soluble phosphor ic acid            
1.0  P2O5 
(3) For a fertilizer with guaranteed 
citrate -soluble phosphoric acid:  
Citrate -soluble phosphoric acid           
1.0  P2O5 
(4) For a fertilizer with guaranteed Per 1.0% of the total  of the 
largest nutrient content of each 
nitrogen, phosphoric acid and 
potassium : 
Thiocyanates   0.005   NH 4SCN 
Arsenic            0.002   As 
Nitrous acid      0.02  HNO 2 
Biuret nitrogen       0.01  N 
Sulfamic acid  
            0.005   NH 2SO 3H 
Cadmium       0.000075   Cd 
Nickel             0.005   Ni 
Chromium           0.05  Cr 
Titanium            0.02  Ti 
Mercury         0.00005   Hg 
Lead              0.003   Pb 
 1. The fertilizer made from 
both type s of fertilizer 
containing citric acid -
soluble phosphoric acid 
and fertilizer containing 
citrate -soluble phosphoric 
acid must be guaranteed 
with either citric acid -
soluble or citrate -soluble 
phosphoric acid.  
The fertilizer with 
guaranteed acid -soluble 
mang anese must be made 
from a fertilizer with 
guaranteed acid -soluble 
manganese.  
2. Compost  (limited to 
compost which mainly  
made from animal and 
poultry waste ) must  be 
guaranteed with  nitrogen  
more than 2.0% and with 
the total  of nitrogen , 
phosphoric acid and 
potassium  more than 5.0% 
when calculated as dry 
compost .  
fertilizers (limited to silica gel 
fertilizer), magnesium fertilizers, 
manganese fertilizers, boron 
fertilizers, or micro -element 
compound fertilizers , and one or 
more of rice bran, fermented rice 
bran, dried algae (powder), 
dried fermented dung a nd urine, 
tansy waste , bone ashes ,  
poultry waste (limited to 
charcoal of poultry waste ), or 
ashes of burned waste of  
poultry ) 
 water -soluble phosphoric acid:  
Water -soluble phosphoric acid           
1.0  P2O5 
4. (1) F or a fertilizer with guaranteed  
total potassium:  
Total potassium      1.0  K2O 
(2) For a fertilizer with guaranteed 
citric acid -soluble potassium:  
Citric acid -soluble potassium    
                    1.0  K2O 
(3) For a fertilizer wi th guaranteed 
water -soluble potassium:  
Water -soluble p otassium        
               1.0  K2O 
5. Fo r a fertilizer with guaranteed acid-
soluble silicic acid:  
Acid -soluble silicic acid          
                     10.0  SiO 2 
6. (1) For a fertilizer with gua ranteed 
citric acid -soluble  magnesium:  
Citric acid -soluble magnesium   
                   1.0  MgO  
(2) F or a fertilizer with guaranteed  
water -soluble  magnesium:  
Water-soluble magnesium        
1.0  MgO  
7. (1) F or a fertilizer with guaranteed  
acid-solubl e manganese:  
Acid -soluble manganese        
                       0.10  MnO  3. Compost  (limited to 
compost which mainly  
made from organic matter 
of food origin ) must  be 
guaranteed with  nitrogen  
more than 3.0% and with 
the total  of nitrogen , 
phosphoric aci d and 
potassium  more than 5.0% 
when calculated as dry 
compost . 
4. Compost  (limited to 
compost which mainly  
made from animal and 
poultry waste  or organic 
matter of food origin ) 
must be 15 or less at the 
carbon  nitrogen ratio （
C/N）, and must be used 
less than 50% of the total 
weight of mixed compost 
compound  fertilizer  when 
calculated as dry compost . 
  
(2) For a fertilizer with guaranteed 
citric acid -soluble manganese:  
Citric  acid-soluble manganese    
0.10  MnO  
(3) F or a fertilizer with guaranteed  
water -soluble manganese:  
Water -soluble  manganese       
                       0.10  MnO  
8. (1) F or a fertilizer with guaranteed  
citric acid -soluble boron:  
Citric acid -soluble boron        
               0.05  B2O3 
(2) For a fertilizer with guaranteed  
 water -soluble boron:  
Water -soluble boron           
                  0.05  B2O3 
  
2. Kinds and maximum content of agricultural chemicals and other substances permissible to be incorporated in a following type of Ordinary 
Fertilizer are considered to be established in the Official Standards pursuant to the provision of the Article 25 of the Fert ilizer Control Law.  
 
  Fertilizer that contains agricultural chemicals and other substances  
Type of fe rtilizer 
 Kinds of agricultural chemicals  
and other substances  Maximum permissible content of  
agricultural chemicals and other substances (%) 
Mixed fertilizer  1-(6-chloro -3-pyridylmethyl) -N-nitro -imidazolidin -2-
ylideneamine  
【imidacloprid 】 
and 
3-allyloxy -1,2-benzisothiazole -1,1-dioxide  
【probenazole 】 0.07  or less 
 
 
 
0.80  or less