However, Silangan, Caypombo, Caysio, Manggahan, Santa Cruz, Tumana, San Gabriel and Pulong Buhangin are deficient in Potassium ranging from 0 ppm to 100 ppm.
Pulong Buhangin National High School (Filipino: Pambansang Mataas na Paaralan ng Pulong Buhangin) or PBNHS is a government secondary education institution located at Pulong Buhangin, Santa Maria town, Bulacan province, Philippines.