The Soil Fertility Matters is a semi-annual publication of the Information Support Project based at UP Los Baños Foundation, Inc.,       

  4031 College, Laguna, Philippines.  Phone: +63-49-536-7418; Fax:+63-49-536-2517; Email:<macandog@pacific.net.ph>       

	Editor-in-Chief		:	Dr. Damasa B. Magcale-Macandog       

	Associate editors		:	Mr. Richard T. Yao 
					Ms. Dwane P. Arboleda       

 	Contributors		: 	Dr. Dennis P. Garrity,        

					Mr. Eduardo E. Queblatin,        

					Dr. Julian Gonsalves,        

					Mr. Chun K. Lai,        

					Dr. Damasa B.Magcale-Macandog,         

					Mr. Richard T. Yao,       

					Ms. Sheryl Swink,        

					Mr. Paul Burgers,        

					Dr. Marco Stark,        

					Dr. Coen Reijntjes,        

					Mr. Milton Flores Barahona,        

					Ms. Marcel Janssen,        

					Ms. Ruud Ortekaas, and        

					Ms. Atsuko Toda       

 	Photographs		:	Mr. Richard T. Yao, 
					Dr. Damasa B. Magcale-Macandog,                                                    

					Dr. Marco Stark, and        

					Mr. Chun K. Lai       

	Advisers			: 	Mr. Eduardo E. Queblatin 
					Dr. Julian Gonsalves