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ผลงานตีพิมพ์ในวารสารวิชาการDynamics of soil aggregate stability as induced by potassium in a soil-plant systemผู้แต่ง: Dr.SURACHET ARAMRAK, Associate Professor , Dr.Natthapol Chittamart, Associate Professor , Dr.Worachart Wisawapipat, Associate Professor , Ms.Wutthida Rattanapichai, Assistant Professor , Dr.Mutchima Phun-Iam, Lecturer , Mrs.Attawan Aramrak, Assistant Professor, วารสาร: 
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 ที่มา:มหาวิทยาลัยเกษตรศาสตร์หัวเรื่อง:Aggregate stability of salt-affected kaolinitic soils on the North-east Plateau, Thailand |
ที่มา:The organizing Committee of the 36th ICVS, OIE&FAO joint symposium (TVMA &OIE &FAO)หัวเรื่อง:Structural Approach of Leptospira Leucine-Rich Repeat Proteins |
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 หัวเรื่อง:ไม่มีชื่อไทย (ชื่ออังกฤษ : Relationship between Soil Property and the Aggregation of Tropical Forest Soils in Thailand) ผู้เขียน: Wanrapee Suwanprapa, ดร.สมชัย อนุสนธิ์พรเพิ่ม, รองศาสตราจารย์ , ดร.ศุภิฌา ธนะจิตต์, รองศาสตราจารย์ , นายเอิบ เขียวรื่นรมณ์, ศาสตราจารย์เกียรติคุณ สื่อสิ่งพิมพ์:pdf AbstractThe aggregate size distribution and its relationships with other soil properties were determined in eight soils under different tropical forest types: secondary mixed deciduous forest, dry dipterocarp forest, dry evergreen forest and an ecotone zone. The aggregate stability of individual aggregate size fractions WSA1 to WSA6 were determined by a wet-sieving method as: 2 mm ? WSA1 <8 mm; 1 mm ? WSA2 < 2 mm; 0.5 mm ? WSA3 < 1 mm; 0.25 mm ? WSA4 < 0.5 mm ; 0.1 mm ? WSA5 < 0.25 mm; and WSA6 < 0.10 mm.. They were moderately shallow to very deep and slightly to strongly acidic. The soil texture was sandy loam to clay with low to high levels of organic matter content (2.0–18.7 g.kg-1), available phosphorus (0.13–0.17 mg.kg-1), available potassium (11–174 mg.kg-1), and cation exchange capacity (4.5–38.5 cmolc.kg-1). There were no differences in the aggregate size distribution among the soils with nearly half of the net aggregates being dominated by macroaggregate size WSA1, especially in the topsoil layers. Organic carbon, available P, bulk density, sand+silt and the clay fractions, and extractable Mg, Fe and Mn played important roles in the water stability of aggregation of these soils in different sizes. Organic carbon was the main source contributing to the formation of macroaggregates (r = 0.77in the topsoils, which consequently reduced the bulk density of these soils (r= -0.58 ). Various amorphous forms of Fe, especially in the amorphous form, were clearly involved in the formation of microaggregates (below 2.5 mm) in subsurface soils. |
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 Researcherดร. มัชฌิมา พันธุ์เอี่ยม, อาจารย์ที่ทำงาน:ภาควิชาปฐพีวิทยา คณะเกษตร สาขาที่สนใจ:Soil fertility and fertilizers, Mineral Nutrition of Plant, Greenhouse production, Submerged soil, Soil amendments, Agroforestry Resume |
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