Growth and Yield Response of Rice to Selected Amendments in an Acid Sulfate Soil

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概要

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• A pot experiment was conducted in relation to the growth, yield, and nutrition of rice plants cultivated in an acid sulfate soil treated with chemical fertilizers, basic slag, lime (CaCO_3) MnO_2, and leaching. The soil showed a low pH (4.0-4.5 : field), high ECe (0.7-1.6 Sm^<-1>) and consisted of a sulfuric horizon within the 1.2 m depth of the soil surface. Maximum growth and yield of rice cultivated in the soil were attained by the application of leaching plus basic slag treatment at the rate of 12.5 g kg^<-1>. The other treatments also resulted in a significantly (p <__- 0.05) improved performance compared with the control treatment (where no amendment was applied). Leaching, basic slag, MnO_2, and lime as single amendment brought about a grain yield increase of 500-900%, while leaching plus various doses of basic slag and lime resulted in an increase of grain yield of more than 1,500% over the control treatment. The highest N content of rice was obtained by the application of leaching plus basic slag (12.5 g kg^<-1>) and leaching plus lime (7.5 g kg^<-1>) treatments. The highest P, Ca, and Mg contents were obtained by the application of leaching plus lime treatment at the rate of 7.5 g kg^<-1> and the maximum content of K was recorded after basic slag treatment at the rate of 7.5 g kg^<-1>. Leaching, lime and basic slag treatments led to a decrease of the Fe, Mn, and Zn concentrations in the plants and soil solutions (leachates). The addition of lime, basic slag, or MnO_2 exerted a significant effect (p <__- 0.05) on the decrease of the S content, increase of the soil solution pH, and optimization of some element concentrations in the plants and soil solutions.

• 社団法人日本土壌肥料学会の論文

著者

• Adachi T

  Faculty Of Agriculture Okayama University

• Adachi Tadashi

  Faculty Of Agriculture Okayama University

• Hussain Mohammad

  Department Of Soil Science University Of Dhaka

• Khan Harunor

  Department Of Soil Science University Of Dhaka

• Rahman Shafiur

  Department of Soil Science, University of Dhaka

• Rahman Shafiur

  Department Of Soil Science University Of Dhaka

関連論文

• Effects of Gypsum, Zn, and Intermittent Saline Irrigation on the Growth, Yield, and Nutrition of Rice Plants Grown in a Saline Soil
• Effect of Presowing Seed Treatments on Germination and Early Seedling Growth of Wheat Varieties under Saline Conditions
• Studies on Saline Soils in Khon Kaen Region, Northeast Thailand : V. Nitrification and Nitrifying Bacteria
• Growth and Yield Response of Rice to Selected Amendments in an Acid Sulfate Soil
• Soil Characteristics and Behavior of Potassium under Various Moisture Regimes
• Effects of Selected Natural Factors on Soil pH and Element Dynamics Studied in Columns of Pyritic Sediments

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