Optimum Oil Palm Nutrient Management in Sandy Areas featured in NUTRIENT CYCLING IN AGROECOSYSTEMS

Fertilizer management effects on oil palm yield and nutrient use efficiency on sandy soils with limited water supply in Central Kalimantan. Nutrient Cycling in Agroecosystems. Pages 1-17. Copyright © 2018 Springer Nature B.V.

NUTRIENT CYCLING IN AGROECOSYSTEMS publishes peer-reviewed papers and rapid communications based on original research as well as reviews, perspectives and commentaries of interest to an international readership. Coverage extends to all aspects of carbon and nutrient cycling as well as management in soil-crop-animal systems, their effects in ecological, agronomic, environmental and economic terms.

Authors:
Hsiao-Hang TaoØ,¶, Christopher DonoughØ, Joska Gerendas§, Munir P. Hoffmann¶, Angger Cahyo#, Hendra SugiantoØ, Ruli Wandri#, Gatot Abdul Rahim#, Myles Fisher$, Reimund P. Rötter¶,£, Klaus Dittert¥, Lénaïc Pardon€, Thomas OberthürØ

Ø International Plant Nutrition Institute, Penang, Malaysia
¶ Tropical Plant Production and Agricultural Systems Modelling (TROPAGS), University of Goettingen, Goettingen, Germany
§ K+S KALI GmbH, Kassel, Germany
# PT Sampoerna Agro Tbk, Jakarta, Indonesia
$ International Center for Tropical Agriculture, Cali, Colombia
£ Centre of Biodiversity and Sustainable Land Use (CBL), University of Goettingen, Goettingen, Germany
¥ Institute of Applied Plant Nutrition, University of Goettingen, Goettingen, Germany
€ CIRAD, UPR Systèmes de pérennes, Montpellier, France

Abstract:
Identifying optimal fertilizer management to ensure high nutrient use efficiency is important to reduce negative environmental impacts in oil palm (Elaeis guineensis) cultivation. A 4-year fertilizer trial was established in an oil palm plantation, located at a sandy area with occasional monthly water deficit in Central Kalimantan. We examined the responses of oil palm yield and nutrient use efficiency to fertilizer application frequency (standard frequency of 1–2 times yr⁻¹ versus 4 times yr⁻¹) and rate (standard rate of 136, 12, and 200 kg ha⁻¹ yr⁻¹ of N, P and K, respectively versus 80% of standard rate). There were no treatment effects on annual yield in fresh fruit bunch, bunch number, or individual bunch weight. Increasing fertilizer frequency did not increase nutrient use efficiency at the last 2 years of the trial. In contrast, reducing fertilizer rate resulted in higher nutrient use efficiency in K, compared to the standard treatment and increasing fertilizer frequency. Average concentrations of N, P, K, Mg, Ca, and Cl in leaflet under all treatments were above critical levels both in the beginning and at the end of the trial. Monthly yield in fresh fruit bunch correlated positively with soil water balance with correlation coefficients of 0.24–0.29, during the developmental period of inflorescence sex differentiation at 28–30 months before fruit maturity. Our study provides useful information for fertilizer management optimization in sandy areas with occasional water deficit, corresponding to most of the new expansion areas of oil palm in Southeast Asia.

For details, please email IPNI Southeast Asia Program: seap@ipni.net