Growth of Several Oil Palm Varieties (Elaeis guineensis Jacq.) in Response to Potassium Fertilizer Doses

Mariana Putri

doi:10.59651/cceria.v19i1.240

Authors

Mariana Putri Universitas Nahdlatul Ulama Sumatera Utara, Indonesia

DOI:

https://doi.org/10.59651/cceria.v19i1.240

Keywords:

Oil Palm, Potassium Fertilization, Nutrient Uptake, Plant Growth, Variety Efficiency

Abstract

Oil palm (Elaeis guineensis Jacq.) is a major commodity in Indonesia, with productivity influenced by agronomic management, including potassium (K) fertilization. Potassium plays an essential role in photosynthesis, stomatal regulation, and the transport of photosynthetic products, but its utilization efficiency can vary depending on the plant variety. This study aims to evaluate the levels of K fertilization on nutrient uptake and plant growth in several superior oil palm varieties and to identify varieties that are efficient in K nutrient uptake. The research was conducted in the greenhouse of the PPKS Aek Pancur experimental plantation, Deli Serdang, North Sumatra, with soil and leaf analysis carried out at the PPKS Laboratory in Medan from April to November 2017. The study employed a factorial randomized block design with two factors. The first factor was the oil palm seedling varieties: DxP (540-B) AVROS, DxP (239) Yangambi, DxP (SMB) Simalungun, DxP (LTC) Langkat, and DxP (718) Yangambi. The second factor was the levels of K fertilization: no K fertilizer, 25% of the recommended dose, 50% of the recommended dose, 75% of the recommended dose, and 100% of the recommended dose. The results showed that the variety treatment significantly affected shoot fresh weight and root volume. The K fertilization level did not significantly affect any parameter. Interaction between variety treatment and K fertilization levels significantly influenced shoot fresh weight.

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