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Spatial variability of soil N, P and K in a paddy field

In recent times, one of the major challenges in crop cultivation is the proper interpretation of field maps, which influences the variability of crop yields significantly. The ability to find and comprehend soil factors influencing crop yield variability will enable us to manage the soils efficientl...

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Main Authors: Roy, Swapan Kumar, Abdul Rahim, Anuar, Jusoff, Kamaruzaman, Ahmad, Desa, Wan Ismail, Wan Ishak
Format: Article
Language:English
Published: Malaysian Society of Soil Science 2001
Online Access:http://psasir.upm.edu.my/id/eprint/49578/1/Spatial%20variability%20of%20soil%20N%2C%20P%20and%20K%20in%20a%20paddy%20field.pdf
http://psasir.upm.edu.my/id/eprint/49578/
http://www.msss.com.my/mjss/abs05.htm
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spelling my.upm.eprints.495782016-12-30T03:38:48Z http://psasir.upm.edu.my/id/eprint/49578/ Spatial variability of soil N, P and K in a paddy field Roy, Swapan Kumar Abdul Rahim, Anuar Jusoff, Kamaruzaman Ahmad, Desa Wan Ismail, Wan Ishak In recent times, one of the major challenges in crop cultivation is the proper interpretation of field maps, which influences the variability of crop yields significantly. The ability to find and comprehend soil factors influencing crop yield variability will enable us to manage the soils efficiently. A study was conducted in a commercial paddy farm at Kahang, Peninsular Malaysia with the objective of quantifying and characterizing the nature of spatial soil nutrients (N, P and K) variation. Soil samples (0-15 cm) were collected at 20 m x 20 m grid pattern from the studied plot (3.85 ha) at the beginning of paddy (MR211 variety) planting and analyzed for total N, available P and exchangeable K. A GeoExplorer II was used to record the soil sampling points and boundary of the plot to interpret the spatial maps in GIS platform with proper coordinates. Geo-statistical analysis was used to characterize the spatial variation of soil nutrients. The coefficient of variation of soil nutrients for the study area was more than 50% where soil P was found to be very high (130%). Semi-variance analysis showed that the sill was reached at 350 m to 450 m (1 to 2 samples ha-1) for soil N, P and K The kriged soil nutrient (N, P and K) maps showed that a large portion of the area (>90%) in the study plot contained soil N lower than 3 g kg-1, soil P lower than 10 mg kg-1, and soil K more than 0.45 cmol, kg-1. The study indicated that soil analysis and the geo-statistical technique are useful to illustrate the spatial variation and interpretation of soil nutrients with the help of GPS and GIS. This integrated technique is a useful prognostics management tool to enhance site-specific management practices. Malaysian Society of Soil Science 2001 Article PeerReviewed application/pdf en http://psasir.upm.edu.my/id/eprint/49578/1/Spatial%20variability%20of%20soil%20N%2C%20P%20and%20K%20in%20a%20paddy%20field.pdf Roy, Swapan Kumar and Abdul Rahim, Anuar and Jusoff, Kamaruzaman and Ahmad, Desa and Wan Ismail, Wan Ishak (2001) Spatial variability of soil N, P and K in a paddy field. Malaysian Journal of Soil Science, 5. pp. 35-45. ISSN 1394-7990 http://www.msss.com.my/mjss/abs05.htm
institution Universiti Putra Malaysia
building UPM Library
collection Institutional Repository
continent Asia
country Malaysia
content_provider Universiti Putra Malaysia
content_source UPM Institutional Repository
url_provider http://psasir.upm.edu.my/
language English
description In recent times, one of the major challenges in crop cultivation is the proper interpretation of field maps, which influences the variability of crop yields significantly. The ability to find and comprehend soil factors influencing crop yield variability will enable us to manage the soils efficiently. A study was conducted in a commercial paddy farm at Kahang, Peninsular Malaysia with the objective of quantifying and characterizing the nature of spatial soil nutrients (N, P and K) variation. Soil samples (0-15 cm) were collected at 20 m x 20 m grid pattern from the studied plot (3.85 ha) at the beginning of paddy (MR211 variety) planting and analyzed for total N, available P and exchangeable K. A GeoExplorer II was used to record the soil sampling points and boundary of the plot to interpret the spatial maps in GIS platform with proper coordinates. Geo-statistical analysis was used to characterize the spatial variation of soil nutrients. The coefficient of variation of soil nutrients for the study area was more than 50% where soil P was found to be very high (130%). Semi-variance analysis showed that the sill was reached at 350 m to 450 m (1 to 2 samples ha-1) for soil N, P and K The kriged soil nutrient (N, P and K) maps showed that a large portion of the area (>90%) in the study plot contained soil N lower than 3 g kg-1, soil P lower than 10 mg kg-1, and soil K more than 0.45 cmol, kg-1. The study indicated that soil analysis and the geo-statistical technique are useful to illustrate the spatial variation and interpretation of soil nutrients with the help of GPS and GIS. This integrated technique is a useful prognostics management tool to enhance site-specific management practices.
format Article
author Roy, Swapan Kumar
Abdul Rahim, Anuar
Jusoff, Kamaruzaman
Ahmad, Desa
Wan Ismail, Wan Ishak
spellingShingle Roy, Swapan Kumar
Abdul Rahim, Anuar
Jusoff, Kamaruzaman
Ahmad, Desa
Wan Ismail, Wan Ishak
Spatial variability of soil N, P and K in a paddy field
author_facet Roy, Swapan Kumar
Abdul Rahim, Anuar
Jusoff, Kamaruzaman
Ahmad, Desa
Wan Ismail, Wan Ishak
author_sort Roy, Swapan Kumar
title Spatial variability of soil N, P and K in a paddy field
title_short Spatial variability of soil N, P and K in a paddy field
title_full Spatial variability of soil N, P and K in a paddy field
title_fullStr Spatial variability of soil N, P and K in a paddy field
title_full_unstemmed Spatial variability of soil N, P and K in a paddy field
title_sort spatial variability of soil n, p and k in a paddy field
publisher Malaysian Society of Soil Science
publishDate 2001
url http://psasir.upm.edu.my/id/eprint/49578/1/Spatial%20variability%20of%20soil%20N%2C%20P%20and%20K%20in%20a%20paddy%20field.pdf
http://psasir.upm.edu.my/id/eprint/49578/
http://www.msss.com.my/mjss/abs05.htm
_version_ 1643834408842559488
score 13.211869

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