Prabovo, Noto E., Foster, Hugh L., Nelson, Stephen, Sitepu, Baihaqi, and Nelson, Paul (2012) Practical use of oil palm nutrient physiological efficiency with regard to nutrient recovery and agronomic efficiencies at different Sumatran sites. In: UNSPECIFIED. From: International Oil Palm Conference, 26-28 September 2012, Cartagena, Colombia. (Unpublished)

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Abstract

The results from seven North and South Sumatra oil palm field fertiliser trials, which were recorded from 1994-2009, were used to study nutrient uptake and efficiencies. The different trial sites allowed effects of different soil properties and climate (rainfall) on dry matter production and yield to be investigated. Additional information was also assessed from two nursery trials to support the field trial results.

The results showed that the nutrient recovery efficiency (RE), which is defined as palm nutrient uptake per unit of given nutrient is subject to variation in site properties. However, the field and nursery trial results demonstrated that the physiological efficiency (PE), or yield increment per unit of nutrient uptake of oil palm, at a particular age and planting material, remains relatively constant over a range of environments. The increased yield per unit of given fertiliser known as agronomic efficiency (AE) is therefore solely dependent upon the RE for a specific planting material. However, a nursery fertiliser showed variation for dry matter production for the same unit of nutrient uptake. Assuming the current daily field management practices have been developed to meet optimal RE and yield then agronomists are able to assess PE of different oil palm planting materials to screen the most suitable for different environments. From a practical point of view agronomists can predict potential yield based on dry matter production which can be helpful in determining the oil palm fertiliser requirement. PE results can also be used to identify and evaluate problem fields in oil palm plantations.

Item ID:	34412
Item Type:	Conference Item (Non-Refereed Research Paper)
Date Deposited:	07 Aug 2014 03:50
FoR Codes:	07 AGRICULTURAL AND VETERINARY SCIENCES > 0703 Crop and Pasture Production > 070306 Crop and Pasture Nutrition @ 100%
SEO Codes:	96 ENVIRONMENT > 9614 Soils > 961402 Farmland, Arable Cropland and Permanent Cropland Soils @ 50% 82 PLANT PRODUCTION AND PLANT PRIMARY PRODUCTS > 8203 Industrial Crops > 820399 Industrial Crops not elsewhere classified @ 50%
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