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 ผลงานตีพิมพ์ในวารสารวิชาการThe boosting of anthocyanin accumulation in black rice cv. Riceberry by spraying MgSO4 at two different altitudes under field conditionsผู้แต่ง: Keosonthi, C, Ingsuraruk, P., Dangprapun, S., Sookgul, P., Narumol, P.,  Dr.Chanate Malumpong, Associate Professor , วารสาร: 
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ผลงานตีพิมพ์ในวารสารวิชาการInfluence of changing lateral recumbency and mode of ventilation on the alveolar-arterial oxygen tension gradient and selected laboratory analytes in adult isoflurane anesthetized horsesผู้แต่ง:Ms.sirirat niyom, Assistant Professor , Mama, Khursheed R., King, Melissa, Contino, Erin, Ferris, Dora, Valdes-Martinez, Alex, (Frisbie, David D., (Mcilwraith, Wayne, Zumbrunnen, James, วารสาร:  
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ผลงานตีพิมพ์ในวารสารวิชาการAltitudinal Effect on Diversity and Distribution of Araceae inDoi Suthep-Pui National Park, Chiang Mai Province in Thailandผู้แต่ง:Mrs.Oraphan Sungkajanttranon, Assistant Professor , Dr.Dokrak Marod, Professor , Dr.Sahanat Phetsri, Associate Professor , นายกริชสยาม คงสตรี, นายอโนทัย เพียรคงชล, นางสาวธัญญ์ธิชา โชติภิเษกสิทธิ์, นางสาวเบญจวรรณ ทรัพย์น่วม, วารสาร: |
 หัวเรื่อง:ไม่มีชื่อไทย (ชื่ออังกฤษ : Status of Cu, Zn, B and Mo in Agricultural Soils of Western Ethiopia: Laboratory Assessment) ผู้เขียน:Teklu Baissa, ดร.อำนาจ สุวรรณฤทธิ์, ศาสตราจารย์เกียรติคุณ, นายยงยุทธ โอสถสภา, รองศาสตราจารย์ , ดร.เอ็จ สโรบล, ศาสตราจารย์ สื่อสิ่งพิมพ์:pdf AbstractOne hundred and sixty soil samples of Nitisols of Western Ethiopia were collected following three elevational positions and two farming practices. The objectives of the study were to assess the status of copper, zinc, boron and molybdenum in the soils and to examine effects of altitude and farming practices on status of the nutrients. The status of copper and zinc were determined by diethylene triamine pentaacetic acid-triethanolamine (DTPA-TEA), ammonium bicarbonate diethylene triamine pentaacetic acid (AB-DTPA) and Mehlich-III methods using atomic absorption spectrophotometer. Boron was analyzed by hot water extraction method and molybdenum by ammonium acetate EDTA extraction method using spectrophotometer. The contents of extractable copper were in the sufficient ranges by DTPA-TEA and AB-DTPA methods. However, by Mehlich-III method the amounts of extractable copper of 18, 3.6 and 1.8% of the samples were below the critical level in low, mid and high altitudes, respectively. The contents of extractable Zn were all in the deficient ranges in low and mid altitudes by DTPA-TEA and Mehlich-III methods. However, by AB-DTPA method, the contents of 72 and 51% of the samples were below critical level in low and mid altitudes, respectively. The contents of extractable Zn were in the deficient range in high altitude by 73, 9 and 71% of the samples using DTPA-TEA, ABDTPA and Mehlich-III, respectively. The contents of extractable boron in 30, 38 and 27% of the samples and the contents of molybdenum in 6, 2 and 6% of the samples were in the deficient range in low, mid and high altitudes, respectively. The contents of copper were higher in traditional farms than in intensive farms in low altitude, while the contents were mostly higher in intensive farms than in traditional farms in mid and high altitudes. The amounts of extractable zinc were higher in intensive farms than traditional farms. The values of extractable boron and extractable molybdenum mostly were higher in traditional farms than in intensive farms in all altitudes. The amounts of copper and zinc by Mehlich-III and AB-DTPA methods increased with increase in altitudes. Boron and molybdenum did not show consistency in the effects of altitudes. Key words: altitude, copper, zinc, boron, molybdenum |
หัวเรื่อง:ไม่มีชื่อไทย (ชื่ออังกฤษ : Macro Mineral Status of Feds in the Central and Western Parts of Ethiopia) ผู้เขียน:Aschalew Tsegahun, ดร.พรศรี ชัยรัตนายุทธ์, รองศาสตราจารย์, ดร.ประวีร์ วิชชุลตา, รองศาสตราจารย์ , ดร.สายัณห์ ทัดศรี, ศาสตราจารย์ สื่อสิ่งพิมพ์:pdf AbstractDifferent feed types collected from three altitudinal ranges in the central and western parts of Ethiopia in two different seasons were evaluated for their macro mineral concentrations. Feeds in the selected parts of the country comprised of natural pasture, hay, straws of cereals and food legumes and to a lesser extent cultivated forage crops and agro-industrial by-products. All feed samples were taken directly from the field or supplied by the farmers. The feed samples were analyzed for the macro minerals namely Ca, P, Mg, Na and K. Mineral concentrations were assessed in relation to recommended dietary requirements of sheep. The results indicated a wide variation in macro minerals along with seasons, altitudes, and feed types. Regardless of seasons and altitudes, all feed types were deficient in Na. Natural pasture, cereal straws, cultivated forages and legume straws were found to be deficient in P. Among the macro minerals P, Mg and Na were found to be the most lacking. In situations where forages are fed exclusively, supplementary P, Mg and Na would be required. The insufficiency of Na is the most widespread mineral deficiency in the studied parts of the country. The levels of Ca and K were found to be sufficiently high to meet estimated nutritional requirements of sheep. |
หัวเรื่อง:ไม่มีชื่อไทย (ชื่ออังกฤษ : Status of Mn and Fe in Agricultural Soils of Western Ethiopia: Laboratory Assessment) ผู้เขียน:Teklu Baissa, ดร.อำนาจ สุวรรณฤทธิ์, ศาสตราจารย์เกียรติคุณ, นายยงยุทธ โอสถสภา, รองศาสตราจารย์, ดร.เอ็จ สโรบล, ศาสตราจารย์ สื่อสิ่งพิมพ์:pdf AbstractOne hundred and sixty soil samples at depth of 0-15 cm were collected from Nitisols of Western Ethiopia following three elevational positions (low, mid and high altitudes) at 1300, 1800 and 2300 masl, respectively, and two farming practices (traditional and intensive). The objectives of the study were to assess the status of manganese and iron in Nitisols and examine effects of altitude and farming practices on the status. The status was determined using diethylene triamine pentaacetic acid-triethanolamine (DTPA-TEA), ammonium bicarbonate diethylene triamine pentaacetic acid (AB-DTPA) and Mehlich III methods using atomic absorption spectrophotometer. There were no textural variation among all samples and all the samples were classified in the clay textural class. The pH measured in water varied between 4.24-6.21. Sixty four percent and fourteen percent of the samples were low in available phosphorus and organic carbon, respectively. Comparing the results of extractable manganese and iron in Nitisols of Western Ethiopia with critical levels of manganese and iron from literature, the amounts of extractable manganese and iron were in the sufficient range. The manganese status was higher in traditional farms than in intensive farms in low and high altitudes. In mid altitude, on the other hands, the status of manganese in intensive farms was higher than that in traditional ones. The iron status was mostly higher in traditional farms than in intensive farms in all altitudes. Irrespective of farming practices the status of manganese and iron increased with the increase in altitude. The amounts of manganese were higher than those of iron in all the three altitudes using the three methods. Comparing the extracting power of the methods used for determining manganese and iron, the result of soil analysis showed that DTPA-TEA was superior to the others followed by AB-DTPA and Mehlich II |
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