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L.M. ALFORJA
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Agriculture, Biological Sciences & Forestry Library & Information Science

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DEVELOPMENT OF COMPUTERIZED FERTILIZER RECOMMENDATIONS FOR COCONUT (BASED ON FOLIAR ANALYSIS) USING A LOTUS 123 SOFTWARE PACKAGE SYSTEM R.Z. MARGATE; M.I. SECRETARIA; S.S. MAGAT; L.M. ALFORJA
International Coconut Community Journal Vol 8 No 01 (1992): CORD
Publisher : International Coconut Community

Show Abstract | Download Original | Original Source | Check in Google Scholar | DOI: 10.37833/cord.v8i01.256

Abstract

A Lotus 123‑based system computer program was developed for fertilizer recommendation of local tall verieties and Dwarf x Tall hybrid coconuts using foliar analysis results. The computer program which is coded as PCA‑FERT. PRG. Version 1.0 utilized the average fertilizer recommendation formulated by Philippine Coconut Authority based on the Authority's 20 years; of research experience on the nutrition and fertilization of coconut in the country. As a first attempt towards the computerization of research outputs on coconut nutrition and fertilization, the program, should facilitate the faster assessment of existing coconut stands in terms of its nutritional status and fertilizer needs. The effective utilization of this program coupled with the researcher's knowledge and expertise on the use of foliar analysis results. will contribute much to the formulation of an accurate and reliable fertilizer recommendation.
RESIDUAL EFFECTS OF SODIUM CHLORIDE (Common Salt) FERTILIZERS ON YIELD AND LEAF NUTRIENTS, OF COCONUTS, GROWN ON AN INLAND SOIL OF DAVAO (Mindanao, Philippines) S.S. MAGAT; J.A. HABANA; L.M. ALFORJA
International Coconut Community Journal Vol 8 No 02 (1992): CORD
Publisher : International Coconut Community

Show Abstract | Download Original | Original Source | Check in Google Scholar | DOI: 10.37833/cord.v8i02.261

Abstract

The beneficial residual effects of the previous regular applications of sodium chloride fertilizers on mature coconuts were evaluated in a long‑term experiment conducted in an inland Tugbok soil (typic Tropudalfs) of Davao, Mindanao (Philippilines). Sodium chloride (common salt) at increpasing rates of 0.0, 0.88, 1.76, 3.52. and 7.04 kg/tree per tree was tested., At higher rates of NaCl fertilizer (1.76‑7.04 kg/tree per year) applied regularly for 5 years, the residual respofise in terms of nuts and copra yield tended to, occur for a longer period of 5 years. Except soil Na, soil. properties were not significantly affected by NaCl application. Implications of the findings are discussed in relation to sound coconut crop agronomy and soil management.
Co-Authors J.A. HABANA M.I. Secretaria R.Z. Margate S.S. Magat