Spatial variability of pineapple yields on tropical peat.
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...
| Main Authors: | , , |
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| Format: | Article |
| Language: | English English |
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Plant Management Network
2008
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| Subjects: | |
| Online Access: | http://psasir.upm.edu.my/id/eprint/16797/1/Spatial%20variability%20of%20pineapple%20yields%20on%20tropical%20peat.pdf |
| _version_ | 1825945885377298432 |
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| author | Balasundram, Siva Kumar Mohd Hanif, Ahmad Husni Ahmad, Osumanu Haruna |
| author_facet | Balasundram, Siva Kumar Mohd Hanif, Ahmad Husni Ahmad, Osumanu Haruna |
| author_sort | Balasundram, Siva Kumar |
| collection | UPM |
| description | 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. |
| first_indexed | 2024-03-06T07:38:29Z |
| format | Article |
| id | upm.eprints-16797 |
| institution | Universiti Putra Malaysia |
| language | English English |
| last_indexed | 2024-03-06T07:38:29Z |
| publishDate | 2008 |
| publisher | Plant Management Network |
| record_format | dspace |
| spelling | upm.eprints-167972015-09-04T08:33:44Z http://psasir.upm.edu.my/id/eprint/16797/ Spatial variability of pineapple yields on tropical peat. Balasundram, Siva Kumar Mohd Hanif, Ahmad Husni Ahmad, Osumanu Haruna 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. Plant Management Network 2008 Article PeerReviewed application/pdf en http://psasir.upm.edu.my/id/eprint/16797/1/Spatial%20variability%20of%20pineapple%20yields%20on%20tropical%20peat.pdf 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 http://www.plantmanagementnetwork.org/pub/cm/research/2008/pineapple/ Pineapple Pineapple - Yields English |
| spellingShingle | Pineapple Pineapple - Yields Balasundram, Siva Kumar Mohd Hanif, Ahmad Husni Ahmad, Osumanu Haruna Spatial variability of pineapple yields on tropical peat. |
| title | Spatial variability of pineapple yields on tropical peat. |
| title_full | Spatial variability of pineapple yields on tropical peat. |
| title_fullStr | Spatial variability of pineapple yields on tropical peat. |
| title_full_unstemmed | Spatial variability of pineapple yields on tropical peat. |
| title_short | Spatial variability of pineapple yields on tropical peat. |
| title_sort | spatial variability of pineapple yields on tropical peat |
| topic | Pineapple Pineapple - Yields |
| url | http://psasir.upm.edu.my/id/eprint/16797/1/Spatial%20variability%20of%20pineapple%20yields%20on%20tropical%20peat.pdf |
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