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Severino S. Magat Ph.D.
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Agriculture, Biological Sciences & Forestry Library & Information Science

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Indicative nutrient supplying capacity and chemical properties of coir dust, coco husk and other coir dust-based materials Ma. Celia M. Raquepo; Carmelita D. Pabustan; Severino S. Magat Ph.D.
International Coconut Community Journal Vol 20 No 2 (2004): CORD
Publisher : International Coconut Community

Show Abstract | Download Original | Original Source | Check in Google Scholar | DOI: 10.37833/cord.v20i02.391

Abstract

The variability of the nutrient contents and chemical properties of coir dust or coco peat derived from coconut husk in different locations was noted. Coir dust is a good supplementary source of N, P, K and Cl, including micronutrients (B, Cu, Fe, Zn, Mn). The coir dust acidity ranges from pH 5.2 - 7.0, and EC from 0.10-1.67 ms/cm based from: fresh (1 month), 3 – 5 months, and 1 year open-field piling (storage). Higher contents of nutrients K, Cl, and Fe of coir dust under coastal area was noted; but contents of N, P, Ca, Mg, S, B, Zn, Mn and Cu were found similar in coastal and inland areas. Under rainfall in open-field piling, Cl dropped to <0.25% at 3 – 5 months and <0.12% in a year’s time period. Moreover, a significant reduction of <0.30 and <0.15 EC (m/cm) in mentioned periods were indicated, respectively. Generally, as compared with other nut components, coco husk and the coir dust did not differ in nutrient contents and chemical properties. As composting material, either alone or in mixes, coco peat showed to be a supplementary source of P, K and Cl. NPK ratio was 2:1:2; and organic carbon content ranged from 6.34 - 12.07%
COCONUT YIELD IMPROVEMENT IN FARMERS' FIELDS THROUGH RESEARCH BASED FERTILIZATION MANAGEMENT IN THE PHILIPPINES Severino S. Magat Ph.D.
International Coconut Community Journal Vol 13 No 02 (1997): CORD
Publisher : International Coconut Community

Show Abstract | Download Original | Original Source | Check in Google Scholar | DOI: 10.37833/cord.v13i02.309

Abstract

For the past 20 years, the development of leaf analysis or foliar diagnosis ofcoconut, supported and confirmed by a network offertilizer experiments (on­station and on‑farm trials) demonstrated the significance of improving coconut yields in terms Of nuts and copra through balance nutrition or fertilization ofpalms. In the Philippines, emphasis on the correction of the widespread deficiencies in N, Cl, S and K had been achieved even in small‑scale farms with 142% average increase in nut yield and 179% increase in copra terms after 3‑4 years of application at moderate rates offertilizers. Research findings are discussed in relation to the coconut rehabilitation of mature stands and the utilization of coconut hybrids in the ‑ sustainable coconut development.
Co-Authors Carmelita D. Pabustan Ma. Celia M. Raquepo