... is two times higher than the content of boron in borax.2,Quick dissolve, this product dissolves quickly, ... of boron will be change quickly and it does not remained in the soil, and it will not harm the ... is two times higher than the content of boron in borax.2,Quick dissolve, this product dissolves quickly, ... of boron will be change quickly and it does not remained in the soil, and it will not harm the ...