สืบค้นงานวิจัย
Effects of different quality organic residues applied yearly for the long term on dissolved organic matter dynamics in a sandy soil
Patma Vityakon - มหาวิทยาลัยขอนแก่น
ชื่อเรื่อง (EN): Effects of different quality organic residues applied yearly for the long term on dissolved organic matter dynamics in a sandy soil
ผู้แต่ง / หัวหน้าโครงการ (EN): Patma Vityakon
หน่วยงานสังกัดผู้แต่ง:
  1. มหาวิทยาลัยขอนแก่น
บทคัดย่อ (EN): The objectives of this study were to investigate the effects of different quality (chemical composition) organic residues applied yearly for the long term on dissolved organic matter (DOM) dynamics in a sandy soil. This study consisted of five organic residue treatments: 1) no residue addition, 2) rice straw (low quality) which had low N, lignin, and polyphenols but high C/N ratio and cellulose, 3) groundnut stover (high quality) with high N but low lignin, polyphenols, and C/N ratio, 4) dipterocarp leaf litter (low quality) containing low N but high lignin, polyphenols, and C/N ratio, and 5) tamarind (leaf + petiole) litter (medium quality) with medium N, lignin, and polyphenols. The results showed that soil treated with tamarind residue yielded higher dissolved organic carbon (DOC) concentration than other treatments, while soil treated with rice straw had the lowest DOC concentration. For dissolved organic nitrogen (DON) concentration, soil treated with groundnut stover gave higher DON concentration than the other treatments. However, soil treated with rice straw residue which contained high cellulose content had the lowest DOC concentration (at 0-15 cm of soil depth). It was speculated that cellulose led to production of low molecular weight-DOC, which had low affinity for adsorption, and hence, may be leached into subsoil (>15 cm of soil depth). Therefore, future research should focus on identifying DOM forms (i.e., low and high molecular weightDOM) and their respective contents, retention and movement in soils under different organic residue applications applied in the long term.
บทคัดย่อ: ไม่พบข้อมูลจากหน่วยงานต้นทาง
ภาษา (EN): th
จำนวนหน้า: 6
เอกสารแนบ: https://ag2.kku.ac.th/kaj/PDF.cfm?filename=50.pdf&id=518&keeptrack=21
เผยแพร่โดย: มหาวิทยาลัยขอนแก่น
คำสำคัญ (EN): decomposition
หากไม่พบเอกสารฉบับเต็ม (Full Text) โปรดติดต่อหน่วยงานเจ้าของข้อมูล

การอ้างอิง

Patma Vityakon. "Effects of different quality organic residues applied yearly for the long term on dissolved organic matter dynamics in a sandy soil". มหาวิทยาลัยขอนแก่น. 2554

Patma Vityakon. "Effects of different quality organic residues applied yearly for the long term on dissolved organic matter dynamics in a sandy soil". มหาวิทยาลัยขอนแก่น. 2554. Print.



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Effects of different quality organic residues applied yearly for the long term on dissolved organic matter dynamics in a sandy soil
Patma Vityakon
มหาวิทยาลัยขอนแก่น
2554
Combined use of contrasting quality organic residues and chemical fertilizers for corn growth in a sandy soil Organic and chemical fertilizers have varied effects on tomato growth in a sandy soil Dynamics of soil organic matter and humic acid contents as influenced by land use changes Effects of Organic Selenium Supplementation in Diet on ChickenCryopreserved Semen Quality Practices sustaining soil organic matter and rice yield in a tropical monsoon region Immobilization of Cadmium in Contaminated Soil Using Organic Amendments and Its Effects on Rice Growth Performance Effects of Organic Manures and Inoculation on Grwoth an d Yield of Off Season soybean Cultivars Grown on an Acid Soil VERMICOMPOST, an organic fertilizer Evolution of pretreatment methods for nanofiltration membrane used for dissolved organic matter removal in raw water supply Response of cadmium accumulation in rice (Oryza sativa L. cv. SPR1) grown with different organic soil amendments
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