Sadang Sari Village,
Bandung, West Java at 668 m above sea level, from October 2013 until February 2014. The soil characteristics of the
experimental site: soil type: clay, pH: 7.2 (wet), organic carbon 3.25 % (high), available of P: 2.14 ppm (very low),
available of K: 10.00 ppm (very low).