00000cam a22000004a 4500 UP-99796217610521194 Buklod 20230504003249.0 g||| g q v| ta 100702s2009 xx rab |000 0|eng d 9789719081708 (iLib)UPD-00191508302 DLC DML eng DMLUC S 654 M35 2009 Mamaril, Cezar Paragas. Facts and myths about organic fertilizers Cezar P. Mamaril, Michelle B. Castillo, Leocadio S. Sebastian. Facts & myths about organic fertilizers Organic fertilizers Maligaya, Science City of Muñoz, Nueva Ecija Philippine Rice Research Institute (PhilRice) c2009. xii, 118 p. col. ill. Foreword -- Preface -- Introduction -- Soils in the rice areas of the Philippines -- What is soil? -- Soil orders grown to rice -- Components of a mineral soil -- Role of soil organic matter (SOM) in crop production -- Flooded versus unflooded ecosystems -- Nutrient cycles in flooded ecosystems -- Nitrogen cycle -- Phorphorus cycle -- Potassium cycle -- Sulfur cycle -- Carbon cycle -- Methods of diagnosing soil nutrient status -- Organic materials vs. mineral fertilizers -- Organic fertilizers -- Green manure -- Inorganic fertilizers -- Utilization of farm wastes -- Contribution of crop residue to soil organic matter -- Comparative accumulation of soil organic matter from rice straw and commercial organic fertilizer -- Rice straw -- Commercial organic fertilizer (COF) -- Crop responses to organic fertilizers/green manures -- Ways of recycling farm wastes -- Biofertilizers vs mineral fertilizers -- Crop responses to biofertilizers -- Concluding remarks -- References -- Glossary of terms -- About the authors. "Considering that the soil is still the base of sustainable agriculture that ensures food security, PhilRice scientists are exploring both indigenous or traditional knowledge and modern technology to maintain our soil's productivity. Being a science-based institution, we would like to give our Filipino farmers the best options or combinations of soil-productivity measures so that they can make informed decisions. This is in the midst of religion-like advocacies in agriculture such as organic farming to sustain soil productivity and to improve plant health, and consequently, human health. Farmers can be easily swept away by this fervor, but PhilRice wishes to engage farmers and other stakeholders in the scientific analysis and informed discussions about issues or technologies that affect their livelihood and future. This is the idea behind this book: "Facts and Myths About Organic Fertilizers".--Foreword. Organic fertilizers. Soil productivity. Rice Soils Philippines. Castillo, Michelle B. Sebastian, Leocadio S. Philippine Rice Research Institute. Book FI Monograph UPD DMLF S 654 M35 2009 Book