CROP FERTILIZER USE EFFICIENCY ANALYSIS (CFE): A Tool in identifying appropriate planting materials of coconut in different agro climatic conditions
Abstract
Nine (9) sites with different growing conditions used in the Regional Testing of Promising Coconut Hybrids and Cultivars in the Philippines or MULTILOC Project (1985‑1996) was subjected to the Crop Fertilizer Use Efficiency (CFE) Analysis. Two CFE indices were used CFEn = nut yield/kg fertilizer applied (per tree) and CFE X = kg copra yield kg fertilizers applied (per tree).
To a great extent, crop fertilizer use efficiency (CFE) ofsuperior hybrids grown in similar environments and appied with same moderate rates offertilizers have higher efficiency of converting the appliedfertilizers to economic yield, nuts or copra (measured in terms of CFEn and CFEc) compared to tall varielies tested in all MULTILOC sites (dry, intermediate and wet growing zone) at n ine years ftom field‑planting (FP). The CFEs, CFEn (nut‑based) at nine sites clearly differed in ternu of the first (best) five entries with highest CFE values. Explanation for this observation deserves further study, looking into the relationship of hybrid vigour (heterosis), crop morphology, physiology and yield.
References
Magat, S. S. (1995 b). Consultant's Report: Crop Nutrition and Soil Fertility Management. MULTILOC Project, PCA, Diliman, Quezon City Report No. 2/95 11 p
Magat, S. S. (1995 a). Consultant's Report: Crop Nutrition and Soil Fertility Management. MULTILOC Project, PCA, Diliman, Quezon City Report No. 2/95 11 p
Malavolta, E (1978) Nutritional Efficiency of 104 Bean Varieties (Phaseolus vulgaris L.) from Plant Nutrition 1978. Proceedings of the 8th International Colloqium on Plant Analysis and Fertilizer Problems, Auckland, New Zealand, 28 August l September 1978. A. R. Ferguson, R. L. Bielecki, I. B. Ferguson (Eds) N.Z. DSIR Information Series No. 134. Wellington: Government Printer, 1978.
O' Sullivan, J; Gabelman, W. H.; Gerloff C. (1974) Variations in efficiency of nitrogen utilization in tomatoes (Lycopersicum esculentum Mill) grown under nitrogen stress. J. American Soc. Horti. Sc. 99: 543 547.
PCA and PCARRD (undated). Regional Testing of Promising Coconut Hybrids and Cultivars (MULTILOC). Phase IV Report, Diliman, Quezon City and Los Banos, Laguna. 75p.
