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ผลงานตีพิมพ์ในวารสารวิชาการUtilization of urea as a nitrogen source for ethanol production from oil palm trunk using simultaneous saccharification and fermentationผู้แต่ง: Afrasiab Khan Tareen, Noppawan Danbamrongtrakool, Imrana Niaz Sultan,  Dr.Nikhom Laemsak, Assistant Professor , Dr.Sarote Sirisansaneeyakul, Professor , Dr.Wirat Vanichsriratana, Associate Professor , Dr.Pramuk Parakulsuksatid, Associate Professor , วารสาร: 
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ผลงานตีพิมพ์ในวารสารวิชาการComprehensive approach to utilize hydrogen peroxide sterilization and urea as nitrogen source for ethanol production from oil palm trunkผู้แต่ง:Danbamrongtrakool, N., Sultan, I.N., Dr.Nikhom Laemsak, Assistant Professor, Tareen, A.K., Dr.Sarote Sirisansaneeyakul, Professor, Dr.Pramuk Parakulsuksatid, Associate Professor, วารสาร: |
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 หัวเรื่อง:การใช้อินทรียวัสดุเหลือใช้บางชนิดเป็นปุ๋ยไนโตรเจนสำหรับข้าวโพดหวานที่ปลูกบนดินกำแพงแสน ผู้เขียน:ดร.ศุภมาศ พนิชศักดิ์พัฒนา, ศาสตราจารย์เกียรติคุณ สื่อสิ่งพิมพ์:pdf AbstractFour kinds of organic waste material (OWM) and inorganic fertilizer (IF) namely castor meal (CM), activated sludge cake (AS) from whisky factory, rice straw compost (RSC), effluent from biogas production (EFB) of liquid swine wastes, and ammonium sulfate were tested as nitrogen source for sweet corn planted in Kamphaeng Saen soil series. The amount of application was equivalent to 15 kg N/rai (93.75 kg N/ha). The field trails were conducted consecutively 3 times in the dry seasons. The results at the first crop showed that except the RSC, the corn yield in the sole OWM treated plots was more or less as high as that in the IF plot. With continual application of the OWMs, the tendency of the corn yield was expected to show the result at the decreasing order: AS ? EFB ? IF ? CM >RSC > check (Ch). There were not significantly different in yield between the combination treatments of 1/2OWM + 1/2IF and the sole OWM treatment except in the RSC case. The corn yield in the RSC treated plot could be increased effectively as high as that in the IF if the RSC was used in combination with the IF as 1/2RSC + 1/2IF, In terms of plant nutrients, the contents of total N in grain and straw could be ranked in the following order: IF = EFB = AS = CM > RSC > Ch. In terms of tasseling and silking, application of the OWMs, either by itself or combined with IF, enhanced tasseling and silking dates to become 1-3 days earlier than usual. With three consecutive applications of the organic wastes, there was no change in the soil properties in terms of pH, Eh, and Na content. However, continual application of RSC or EFB, either single or combined with IF, tended to increase K and Mg in the soil whereas the AS slightly increased soil P and soil Ca. For the EFB case, it could be used effectively not only as the N source for the sweet corn, but also it could substitute irrigation water as much as 28,000 1/rai/wk (175,000 1/ha/wk) or 196,000 1/rai/crop (1,225,000 1/ha/crop). |
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หัวเรื่อง:อิทธิพลของชนิดและอัตราปุ๋ยไนโตรเจนที่มีต่อผลผลิตของหญ้ากินนีที่ปลูกบนชุดดินกำแพงแสนในสภาพไร่นา ผู้เขียน:Prasert Bunpithukkeit สื่อสิ่งพิมพ์:pdf AbstractA field experiment was established to determine the influence of nitrogen sources and nitrogen rates on the dry matter production of Guinea grass grown on Kamphaeng Saen soil series (Typic Haplustalp five silty, mixed). The experiment was conducted at experimental farm of the Department of Soil Science, (Kamphaeng Saen campus), Kasetsart University, Nakorn Pathom. In 1989, a factorial experiment in randomized complete block design of three nitrogen sources, urea (46% N), ammonium sulfate (21% N) and ammonium chloride (25% N) While rates of nitrogen were 0, 25, 50 and 75 kg N/rai with 3 replications. The grass was harvested for analysis every month and these analysis have carried out for six months. The average of dry matter yields and N yields of Guinea grass showed no significant difference from various nitrogen fertilizers. The ammonium sulfate application gave the highest average dry matter of 2,230 kg/rai. On the other hand, the highest N yields was 33.04 kg/rai when applied ammonium chloride. The yields of Guinea grass increased with increasing level of nitrogen fertilizer application. Average dry matter production of Guinea grass obtained from different rate of nitrogen fertilizer were significant difference and at 75 kg N/rai, the highest dry matter yields and N yields were 2,720 and 45.86 kg N/rai, respectively. The recovery of nitrogen was between 38% to 45%. The highest nitrogen recovery was 45% from ammonium chloride, following by urea 43%, While the lowest one was about 38% from ammonium sulfate. |
หัวเรื่อง:การใช้น้ำทิ้งจากการผลิตแก๊สชีวภาพเป็นปุ๋ยไนโตรเจนสำหรับกวางตุ้ง ที่ปลูกบนดินกำแพงแสน ผู้เขียน:ดร.ศุภมาศ พนิชศักดิ์พัฒนา, ศาสตราจารย์เกียรติคุณ สื่อสิ่งพิมพ์:pdf AbstractIn field trials, effluent from biogas production (EFB) of liquid swine wastes was tested as nitrogen source and as irrigation water for Pak-choy (Brassica campestris var chinensis) grown on Kamphaeng Saen soil. The EFB was applied weekly at 40,000 l/rai (6.25 rai = 1 ha) throughout the growing period. With the designated rate, the total nitrogen content of the EFB was equivalent to 20 kgN/rai (125 kgN/ha). Inorganic fertilizer (IF) in the form of ammonium sulfate at the same rate of N as above was used as the standard treatment. Combinations of halves of the two treatments (1/2EFB+1/2IF) and half of the rate of the EFB irrigation water (1/2EFB+IRR) were set up as the alternative treatment. Consecutively, the field trials were conducted 5 crops in the dry seasons. The results indicated that the crop yield from the EFB plot was equivalent to 85% of that from the IF plot whereas the 1/2EFB+1/2IF could produce crop yield comparable to that produced by the IF. Half of the EFB rate in combination with irrigation water supplied less nitrogen to the crop resulting in low crop yield and low nitrogen content in the plant tissue. In addition, the EFB could be used as an alternative source of water for plant growth. It could substitute the irrigation water as much as 40,000 1/rai/wk (250,000 1/ha/wk) or 280,000 1/rai (1,750,000 1/ha) for the whole growing period. With the mentioned rate, there was no change in some chemical and physical properties of the soil such as pH, electrical conductivity, the contents of P, K, Ca, mg, Cu and Zn, bulk density, available moisture capacity and aggregate size distribution. |
การประชุมวิชาการOptimization of carotenoid production in purple non-sulfur bacteria, Rhodopseudomonas palustrisผู้แต่ง:Rapeeporn Reaksputi, Dr.Kangsadan Boonprab, Associate Professor , Dr.Suriyan Tunkijjanukij, Assistant Professor , Dr.SIRAPAN SUKONTASING, Assistant Professor , Dr.Jintana Salaenoi, Associate Professor , การประชุมวิชาการ: |
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หัวเรื่อง:การใช้น้ำทิ้งจากการผลิตแก๊สชีวภาพเป็นปุ๋ยไนโตรเจนสำหรับหญ้ากินนี ที่ปลูกบนดินกำแพงแสน ผู้เขียน:ดร.ศุภมาศ พนิชศักดิ์พัฒนา, ศาสตราจารย์เกียรติคุณ สื่อสิ่งพิมพ์:pdf AbstractEffluent from biogas production (EFB) of liquid swine wastes was tested as nitrogen source and as irrigational water for guinea grass planted in Kamphaeng Saen soil. The EFB was applied weekly at 40,000 l/rai (6.25 rai = 1 ha) for the whole growing period. With the mentioned rate, the EFB supplied nitrogen for the grass which was equivalent to 25 kg N/rai (156 kg N/ha). Inorganic fertilizer (IF) in the form of ammonium sulfate at the same rate as above was used as the standard treatment. Combination of the two treatments (1/2EFB + 1/2IF) and no nitrogen fertilizer (Ch) were set as an alternative and the check treatments, respectively. The experiment was conducted as field trial using RCBD with 4 replications. One crop of the grass was harvested 4 times monthly. The grass was planted for the total of 3 consecutive dry seasons. The results indicated that by using EFB, grass yield could be produced as much as using 25 kg N/rai chemical fertilizer. The grasses which received EFB or IF were more or less the same in nutrient amount and nutritional quality. The EFB could replace irrigational water for the whole planting period. It could substitute irrigational water as much as 160,000 l/rai/month (1,000,000 l/ha/month). With long-term application of the EFB, there were no change of Zn, Cu, pH and electrical conductivity of the soil. Some soil physical properties, such as state of aggregation, were likely improved. In addition, no increase of nitrate content in ground water was observed. |
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