Field ekperimenls of corn, millet, spinach, and fennel were made to test the fertilizing value of urine in. Peiping soil. On equal nitrogen content basis, urine has nearly the same fertilizing value as ammonium sulfate and they are much superior than feces calves, The amount bf salt in urine applied to the soil was very small. photographs: 1,No munura 2,Feces cakes 3,Hmam urine 4,Amnonium sulfate.