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Spatial variability of pineapple yields on tropical peat.


Citation

Balasundram, Siva Kumar and Mohd Hanif, Ahmad Husni and Ahmad, Osumanu Haruna (2008) Spatial variability of pineapple yields on tropical peat. Crop Management. ISSN 1543-7833

Abstract / Synopsis

The spatial variability of pineapple yields from a one-hectare field located on a tropical peat was quantified. In situ yield measurements were recorded based on 0.6 × 25-m rectangular grids. A total of 60 geo-referenced yield records were obtained. Recording points were spaced 8 × 18 m. Yield data were subjected to semivariogram and kriging analyses. The average pineapple yield was 93.3 kg per grid with a CV of 13.7%. The spatial structure of pineapple yields was fitted using an exponential function with a total variation (sill) of 137.6, a random variation (nugget) of 49.3, and an effective range of 38.1 m. Based on the nugget to sill ratio, pineapple yields showed a moderate spatial dependence. A map comprising measured and interpolated yield values showed that 31% of the field had yields close to the field average, 36% had yields above the average, and 33% with yields below the average. These results suggest that site-specific management of pineapple is necessary.


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Additional Metadata

Item Type: Article
Subject: Pineapple
Subject: Pineapple - Yields
Divisions: Faculty of Agriculture
Publisher: Plant Management Network
Keywords: Spatial variability; Pineapple; Tropical peat
Depositing User: Norhazura Hamzah
Date Deposited: 14 Nov 2012 02:35
Last Modified: 04 Sep 2015 08:33
URI: http://psasir.upm.edu.my/id/eprint/16797
Statistic Details: View Download Statistic

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