Spatial variability of pineapple yields on tropical peat.

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

Full text not available from this repository.

Official URL: http://www.plantmanagementnetwork.org/pub/cm/research/2008/pineapple/

Abstract

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.

Item Type:Article
Keyword:Spatial variability; Pineapple; Tropical peat
Subject:Pineapple
Subject:Pineapple - Yields
Faculty or Institute:Faculty of Agriculture
Publisher:Plant Management Network
ID Code:16797
Deposited By: Norhazura Hamzah
Deposited On:14 Nov 2012 02:35
Last Modified:26 Aug 2014 08:26

Repository Staff Only: Edit item detail

Document Download Statistics

This item has been downloaded for since 14 Nov 2012 02:35.

View statistics for "Spatial variability of pineapple yields on tropical peat."


Universiti Putra Malaysia Institutional Repository

Universiti Putra Malaysia Institutional Repository is an on-line digital archive that serves as a central collection and storage of scientific information and research at the Universiti Putra Malaysia.

Currently, the collections deposited in the IR consists of Master and PhD theses, Master and PhD Project Report, Journal Articles, Journal Bulletins, Conference Papers, UPM News, Newspaper Cuttings, Patents and Inaugural Lectures.

As the policy of the university does not permit users to view thesis in full text, access is only given to the first 24 pages only.