Applied K Fertilizer Use Efficiency in Pineapples Grown on a Tropical Peat Soil Under Residues Removal
| Autor: | Osumanu Haruna Ahmed, Anuar Abdul Rahim, Syed Omar Syed Rastan, Husni M H Ahmad, Hanafi M Musa |
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| Jazyk: | angličtina |
| Rok vydání: | 2005 |
| Předmět: |
Peat
Soil test Article Subject lcsh:Medicine Environmental pollution engineering.material Ananas lcsh:Technology General Biochemistry Genetics and Molecular Biology residues Soil Tropical peat Soil Pollutants Leaching (agriculture) Fertilizers lcsh:Science General Environmental Science potassium fertilizers Tropical Climate lcsh:T lcsh:R Malaysia Sowing Agriculture General Medicine tropical peat soils leaching Agronomy Soil water engineering Potassium Environmental science pineapples lcsh:Q Fertilizer Environmental Pollution Research Article |
| Zdroj: | The Scientific World Journal, Vol 5, Pp 42-49 (2005) The Scientific World Journal |
| Popis: | In Malaysia, pineapples are grown on peat soils, but most K fertilizer recommendations do not take into account K loss through leaching. The objective of this study was to determine applied K use efficiency under a conventionally recommended fertilization regime in pineapple cultivation with residues removal. Results showed that K recovery from applied K fertilizer in pineapple cultivation on tropical peat soil was low, estimated at 28%. At a depth of 0–10 cm, there was a sharp decrease of soil total K, exchangeable K, and soil solution K days after planting (DAP) for plots with K fertilizer. This decline continued until the end of the study. Soil total, exchangeable, and solution K at the end of the study were generally lower than prior values before the study. There was no significant accumulation of K at depths of 10–25 and 25–45 cm. However, K concentrations throughout the study period were generally lower or equal to their initial status in the soil indicating leaching of the applied K and partly explained the low K recovery. Potassium losses through leaching in pineapple cultivation on tropical peat soils need to be considered in fertilizer recommendations for efficient recovery of applied K. |
| Databáze: | OpenAIRE |
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