Long-Term Effect of Fertilizer and Rice Straw on Mineral Composition and Potassium Adsorption in a Reddish Paddy Soil
Increasing K+ adsorption can be an effective alternative in building an available K pool in soils to optimize crop recovery and minimize losses into the environment. We hypothesized that long-term fertilization might change K+ adsorption because of changes in the chemical and mineralogical propertie...
Main Authors: | , , , , , |
---|---|
Format: | Article |
Language: | English |
Published: |
Elsevier
2013-04-01
|
Series: | Journal of Integrative Agriculture |
Subjects: | |
Online Access: | http://www.sciencedirect.com/science/article/pii/S2095311913602889 |
id |
doaj-714ec14266b142578ff2a79262fb77d3 |
---|---|
record_format |
Article |
spelling |
doaj-714ec14266b142578ff2a79262fb77d32021-06-07T06:48:31ZengElsevierJournal of Integrative Agriculture2095-31192013-04-01124694710Long-Term Effect of Fertilizer and Rice Straw on Mineral Composition and Potassium Adsorption in a Reddish Paddy SoilYu-lin LIAO0Sheng-xian ZHENG1Jun NIE2Jian XIE3Yan-hong LU4Xiao-bo QIN5Soil and Fertilizer Institute of Hunan Province, Hunan Academy of Agricultural Sciences/Scientific Observing and Experimental Station of Arable Land Conservation (Hunan), Ministry of Agriculture, Changsha 410125, P.R. China; LIAO Yu-lin, Tel: +86-731-84693197Soil and Fertilizer Institute of Hunan Province, Hunan Academy of Agricultural Sciences/Scientific Observing and Experimental Station of Arable Land Conservation (Hunan), Ministry of Agriculture, Changsha 410125, P.R. China; Correspondence ZHENG Sheng-xian, Tel: +86-731-84691576, Fax: +86-731-84691581Soil and Fertilizer Institute of Hunan Province, Hunan Academy of Agricultural Sciences/Scientific Observing and Experimental Station of Arable Land Conservation (Hunan), Ministry of Agriculture, Changsha 410125, P.R. ChinaSoil and Fertilizer Institute of Hunan Province, Hunan Academy of Agricultural Sciences/Scientific Observing and Experimental Station of Arable Land Conservation (Hunan), Ministry of Agriculture, Changsha 410125, P.R. ChinaSoil and Fertilizer Institute of Hunan Province, Hunan Academy of Agricultural Sciences/Scientific Observing and Experimental Station of Arable Land Conservation (Hunan), Ministry of Agriculture, Changsha 410125, P.R. ChinaInstitute of Environment and Sustainable Development in Agriculture, Chinese Academy of Agricultural Sciences/The Key Laboratory for Agro-Environment, Ministry of Agriculture, Beijing 100081, P.R. ChinaIncreasing K+ adsorption can be an effective alternative in building an available K pool in soils to optimize crop recovery and minimize losses into the environment. We hypothesized that long-term fertilization might change K+ adsorption because of changes in the chemical and mineralogical properties of a rice (Oryza sativa L.). The aims of this study were (i) to determine clay minerals in paddy soil clay size fractions using X-ray diffraction methods and a numerical diagram-decomposition method; (ii) to measure K+ adsorption isotherms before and after H2O2 oxidation of organic matter, and (iii) to investigate whether K+ adsorption is correlated with changes in soil chemical and mineral properties. The 30-yr long-term fertilization treatments caused little change in soil organic C (SOC) but a large variation in soil mineral composition. The whole-clay fraction (<5 μm) corresponded more to the fertilization treatment than the fine-clay fraction (<1 μm) in terms of percentage of illite peak area. The total percentage of vermiculite-chlorite peak area was significantly negatively correlated with the total percentage of illite peak area in the <5 μm soil particles (R=-0.946, P<0.0006). Different fertilization treatments gave significantly different results in K+ adsorption. The SOC oxidation test showed positive effects of SOC on K+ adsorption at lower K+ concentration (⩽120 mg L−1) and negative effects at higher K+ concentration (240 mg L−1). The K+ adsorption by soil clay minerals after SOC oxidization accounted for 60–158% of that by unoxidized soils, suggesting a more important role of soil minerals than SOC on K+ adsorption. The K+ adsorption potential was significantly correlated to the amount of poorly crystallized illite present (R=0.879, P=0.012). The availability of adsorbed K+ for plant growth needs further study.http://www.sciencedirect.com/science/article/pii/S2095311913602889long-term experimentmineral compositionpotassium adsorptionreddish paddy soil |
collection |
DOAJ |
language |
English |
format |
Article |
sources |
DOAJ |
author |
Yu-lin LIAO Sheng-xian ZHENG Jun NIE Jian XIE Yan-hong LU Xiao-bo QIN |
spellingShingle |
Yu-lin LIAO Sheng-xian ZHENG Jun NIE Jian XIE Yan-hong LU Xiao-bo QIN Long-Term Effect of Fertilizer and Rice Straw on Mineral Composition and Potassium Adsorption in a Reddish Paddy Soil Journal of Integrative Agriculture long-term experiment mineral composition potassium adsorption reddish paddy soil |
author_facet |
Yu-lin LIAO Sheng-xian ZHENG Jun NIE Jian XIE Yan-hong LU Xiao-bo QIN |
author_sort |
Yu-lin LIAO |
title |
Long-Term Effect of Fertilizer and Rice Straw on Mineral Composition and Potassium Adsorption in a Reddish Paddy Soil |
title_short |
Long-Term Effect of Fertilizer and Rice Straw on Mineral Composition and Potassium Adsorption in a Reddish Paddy Soil |
title_full |
Long-Term Effect of Fertilizer and Rice Straw on Mineral Composition and Potassium Adsorption in a Reddish Paddy Soil |
title_fullStr |
Long-Term Effect of Fertilizer and Rice Straw on Mineral Composition and Potassium Adsorption in a Reddish Paddy Soil |
title_full_unstemmed |
Long-Term Effect of Fertilizer and Rice Straw on Mineral Composition and Potassium Adsorption in a Reddish Paddy Soil |
title_sort |
long-term effect of fertilizer and rice straw on mineral composition and potassium adsorption in a reddish paddy soil |
publisher |
Elsevier |
series |
Journal of Integrative Agriculture |
issn |
2095-3119 |
publishDate |
2013-04-01 |
description |
Increasing K+ adsorption can be an effective alternative in building an available K pool in soils to optimize crop recovery and minimize losses into the environment. We hypothesized that long-term fertilization might change K+ adsorption because of changes in the chemical and mineralogical properties of a rice (Oryza sativa L.). The aims of this study were (i) to determine clay minerals in paddy soil clay size fractions using X-ray diffraction methods and a numerical diagram-decomposition method; (ii) to measure K+ adsorption isotherms before and after H2O2 oxidation of organic matter, and (iii) to investigate whether K+ adsorption is correlated with changes in soil chemical and mineral properties. The 30-yr long-term fertilization treatments caused little change in soil organic C (SOC) but a large variation in soil mineral composition. The whole-clay fraction (<5 μm) corresponded more to the fertilization treatment than the fine-clay fraction (<1 μm) in terms of percentage of illite peak area. The total percentage of vermiculite-chlorite peak area was significantly negatively correlated with the total percentage of illite peak area in the <5 μm soil particles (R=-0.946, P<0.0006). Different fertilization treatments gave significantly different results in K+ adsorption. The SOC oxidation test showed positive effects of SOC on K+ adsorption at lower K+ concentration (⩽120 mg L−1) and negative effects at higher K+ concentration (240 mg L−1). The K+ adsorption by soil clay minerals after SOC oxidization accounted for 60–158% of that by unoxidized soils, suggesting a more important role of soil minerals than SOC on K+ adsorption. The K+ adsorption potential was significantly correlated to the amount of poorly crystallized illite present (R=0.879, P=0.012). The availability of adsorbed K+ for plant growth needs further study. |
topic |
long-term experiment mineral composition potassium adsorption reddish paddy soil |
url |
http://www.sciencedirect.com/science/article/pii/S2095311913602889 |
work_keys_str_mv |
AT yulinliao longtermeffectoffertilizerandricestrawonmineralcompositionandpotassiumadsorptioninareddishpaddysoil AT shengxianzheng longtermeffectoffertilizerandricestrawonmineralcompositionandpotassiumadsorptioninareddishpaddysoil AT junnie longtermeffectoffertilizerandricestrawonmineralcompositionandpotassiumadsorptioninareddishpaddysoil AT jianxie longtermeffectoffertilizerandricestrawonmineralcompositionandpotassiumadsorptioninareddishpaddysoil AT yanhonglu longtermeffectoffertilizerandricestrawonmineralcompositionandpotassiumadsorptioninareddishpaddysoil AT xiaoboqin longtermeffectoffertilizerandricestrawonmineralcompositionandpotassiumadsorptioninareddishpaddysoil |
_version_ |
1721392514053701632 |