Apparent soil electrical conductivity as an indicator of paddy soil productivity
Paddy soils are naturally heterogeneous in terms of their physico-chemical properties which influence rice productivity. Currently, uniform application of agricultural fertilizers for the entire field is not efficient and could result in either insufficient or excess nutrient supply. Good agricultur...
| Main Authors: | , , , |
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| Format: | Article |
| Language: | English |
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Malaysian Agricultural Research and Development Institute (MARDI)
2008
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| Online Access: | http://psasir.upm.edu.my/id/eprint/13216/ http://psasir.upm.edu.my/id/eprint/13216/1/Apparent%20soil%20electrical%20conductivity%20as%20an%20indicator%20of%20paddy%20soil%20productivity.pdf |
| _version_ | 1848842051854008320 |
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| author | Chan, Chee Shen Mohd Soom, Mohd Amin Lee, Teang Shui Mohammud, Che Husain |
| author_facet | Chan, Chee Shen Mohd Soom, Mohd Amin Lee, Teang Shui Mohammud, Che Husain |
| author_sort | Chan, Chee Shen |
| building | UPM Institutional Repository |
| collection | Online Access |
| description | Paddy soils are naturally heterogeneous in terms of their physico-chemical properties which influence rice productivity. Currently, uniform application of agricultural fertilizers for the entire field is not efficient and could result in either insufficient or excess nutrient supply. Good agricultural practices can be achieved if soil and nutrient variations within a farm are considered, and a soil-yield interrelationship is established. Simple, rapid and accurate methods to characterize these variations are needed. This study was conducted in MARDI Seberang Perai Research Station located at the northern part of Peninsular Malaysia. Soil samples were collected at regular grid spacing from the upper (0–20 cm) and lower (30–50 cm) soil layers. These samples were analysed for their soil texture and chemical properties. Crop cutting test yields were taken at the same soil sampling locations. Geo-referenced apparent electrical conductivity (ECa) measurements were obtained by using Veris 3100 cart equipped with a data logger and a differential global positioning system (DGPS). The relationship between grain yield and ECa was examined for three crop seasons in scatter plots. A boundary line using log-normal function was fitted to the upper edge of the data in the scatter plots. Significant relationships between potential grain yield and ECa were found with r2 >0.58. The significant correlations of temporal soil ECa and measurements implied that soil ECa within field do not tend to change significantly over time. Comparison of potential yield (Ypo) and observed yield (Yob) led to classification of farm areas into different management zones and allows for discriminate management practices particularly to low yield areas due to less than ideal field conditions. |
| first_indexed | 2025-11-15T07:52:59Z |
| format | Article |
| id | upm-13216 |
| institution | Universiti Putra Malaysia |
| institution_category | Local University |
| language | English |
| last_indexed | 2025-11-15T07:52:59Z |
| publishDate | 2008 |
| publisher | Malaysian Agricultural Research and Development Institute (MARDI) |
| recordtype | eprints |
| repository_type | Digital Repository |
| spelling | upm-132162016-10-10T05:46:18Z http://psasir.upm.edu.my/id/eprint/13216/ Apparent soil electrical conductivity as an indicator of paddy soil productivity Chan, Chee Shen Mohd Soom, Mohd Amin Lee, Teang Shui Mohammud, Che Husain Paddy soils are naturally heterogeneous in terms of their physico-chemical properties which influence rice productivity. Currently, uniform application of agricultural fertilizers for the entire field is not efficient and could result in either insufficient or excess nutrient supply. Good agricultural practices can be achieved if soil and nutrient variations within a farm are considered, and a soil-yield interrelationship is established. Simple, rapid and accurate methods to characterize these variations are needed. This study was conducted in MARDI Seberang Perai Research Station located at the northern part of Peninsular Malaysia. Soil samples were collected at regular grid spacing from the upper (0–20 cm) and lower (30–50 cm) soil layers. These samples were analysed for their soil texture and chemical properties. Crop cutting test yields were taken at the same soil sampling locations. Geo-referenced apparent electrical conductivity (ECa) measurements were obtained by using Veris 3100 cart equipped with a data logger and a differential global positioning system (DGPS). The relationship between grain yield and ECa was examined for three crop seasons in scatter plots. A boundary line using log-normal function was fitted to the upper edge of the data in the scatter plots. Significant relationships between potential grain yield and ECa were found with r2 >0.58. The significant correlations of temporal soil ECa and measurements implied that soil ECa within field do not tend to change significantly over time. Comparison of potential yield (Ypo) and observed yield (Yob) led to classification of farm areas into different management zones and allows for discriminate management practices particularly to low yield areas due to less than ideal field conditions. Malaysian Agricultural Research and Development Institute (MARDI) 2008 Article PeerReviewed application/pdf en http://psasir.upm.edu.my/id/eprint/13216/1/Apparent%20soil%20electrical%20conductivity%20as%20an%20indicator%20of%20paddy%20soil%20productivity.pdf Chan, Chee Shen and Mohd Soom, Mohd Amin and Lee, Teang Shui and Mohammud, Che Husain (2008) Apparent soil electrical conductivity as an indicator of paddy soil productivity. Journal of Tropical Agriculture and Food Science, 36 (1). pp. 145-153. ISSN 1394-9829; ESSN: 2289-9650 http://ejtafs.mardi.gov.my/index.php/publication/issues/archive/37-2008/volume-36-no1/115-360116 |
| spellingShingle | Chan, Chee Shen Mohd Soom, Mohd Amin Lee, Teang Shui Mohammud, Che Husain Apparent soil electrical conductivity as an indicator of paddy soil productivity |
| title | Apparent soil electrical conductivity as an indicator of paddy soil productivity |
| title_full | Apparent soil electrical conductivity as an indicator of paddy soil productivity |
| title_fullStr | Apparent soil electrical conductivity as an indicator of paddy soil productivity |
| title_full_unstemmed | Apparent soil electrical conductivity as an indicator of paddy soil productivity |
| title_short | Apparent soil electrical conductivity as an indicator of paddy soil productivity |
| title_sort | apparent soil electrical conductivity as an indicator of paddy soil productivity |
| url | http://psasir.upm.edu.my/id/eprint/13216/ http://psasir.upm.edu.my/id/eprint/13216/ http://psasir.upm.edu.my/id/eprint/13216/1/Apparent%20soil%20electrical%20conductivity%20as%20an%20indicator%20of%20paddy%20soil%20productivity.pdf |