Search Result of "soil amendment"

About 76 results
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การประชุมวิชาการ

Oil Palm Ash as a Soil Amendment

ผู้แต่ง:ImgKamolchanok Charoensri, ImgDr.Worachart Wisawapipat, Associate Professor, ImgDr.Timtong Darunsontaya, Assistant Professor, ImgDr.Nattaporn Prakongkep, Lecturer, ImgRobert J. Gilkes,

การประชุมวิชาการ:

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งานวิจัย

การเพิ่มมูลค่าของ leonardite โดยการผลิตเป็นสารปรับปรุงคุณภาพดิน (2012)

หัวหน้าโครงการ:Imgดร.คณพล จุฑามณี, รองศาสตราจารย์

ผู้ร่วมโครงการ:Imgดร.แสงดาว แลนรอด (เขาแก้ว), ผู้ช่วยศาสตราจารย์

แหล่งทุน:การไฟฟ้าฝ่ายผลิตแห่งประเทศไทย

ผลลัพธ์:วารสาร (6) ประชุมวิชาการ (3)

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งานวิจัย

การพัฒนาถ่านชีวภาพที่อุดมไปด้วยไนโตรเจนเพื่อใช้เป็นสารบำรุงดินสำหรับดินทราย (2018)

หัวหน้าโครงการ:Imgดร.รมิดา รัตนคาม, อาจารย์

แหล่งทุน:สำนักงานพัฒนาวิทยาศาสตร์และเทคโนโลยีแห่งชาติ

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ผลงานตีพิมพ์ในวารสารวิชาการ

Evaluation of Azadirachta indica as a Soil Amendment for Controlling Bacterial Wilt of Tomato

ผู้แต่ง:ImgDr.Chalida Leksomboon, Associate Professor,

วารสาร:

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ที่มา:วิทยาสารเกษตรศาสตร์ สาขา วิทยาศาสตร์

หัวเรื่อง:ไม่มีชื่อไทย (ชื่ออังกฤษ : Effect of Soil Amendment with Urea and Calcium Oxide on Survival of Ralstonia solanacearum, the Causal Agent of Bacterial Wilt or Rhizome Rot of Ginger)

ผู้เขียน:Imgนางศศิธร วุฒิวณิชย์, รองศาสตราจารย์

สื่อสิ่งพิมพ์:pdf

Abstract

The effect of soil amendment with urea and calcium oxide on survival of Ralstonia solanacearum, the causal agent of bacterial wilt or rhizome rot of ginger, was studied by mixing urea and calcium oxide at the rate of 80 : 800 kg/rai in the artificial infested soil with 2.83 ? 107 cfu/ml of bacteria. The treated soil was left one week before transplanting the two months old gingers. The soil was sampled during week 0 - 4 to evaluate the population of R. solanacearum and to compare with the control by serial dilution method and spread plate on SM-1 medium. The experiment showed that the population of R. solanacearum in the soil amendment with urea and calcium oxide decreased from 0.88 ? 107 cfu/ml to 0.15 ? 105 cfu/ml in week one, 0.1 ? 104 cfu/ml in week two and 0 cfu/ml in week three. The control treatment still contained high population level of 0.26 ? 107 cfu/ml in week one, 0.13 ? 106 cfu/ml in week two and three and 0.11? 106 cfu/ml in week four. This population level could cause typical wilt of the tested gingers. The tested gingers transplanted in the treated soil showed no symptom. The decrease of bacteria in the treated soil was due to the toxicity of ammonium, ammonia and nitrate degraded from urea in high pH soil condition (average 7.0-7.2). Therefore the soil amendment with urea and calcium oxide at the rate of 80 : 800 kg/rai is recommended to decrease population of R. solanacearum in the infested fields for bacterial wilt control. The treated soil should be left at least 3 weeks before planting a new crop to avoid toxicating to ginger seedlings.

Article Info
Agriculture and Natural Resources -- formerly Kasetsart Journal (Natural Science), Volume 036, Issue 3, Jul 02 - Sep 02, Page 242 - 247 |  PDF |  Page 

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ที่มา:วิทยาสารเกษตรศาสตร์ สาขา วิทยาศาสตร์

หัวเรื่อง:ไม่มีชื่อไทย (ชื่ออังกฤษ : Effects of Soil Amendment on Growth and Heavy Metals Content in Vetiver Grown on Iron Ore Tailings)

ผู้เขียน:Imgดร.นวลฉวี รุ่งธนเกียรติ, ศาสตราจารย์, Imgนายยงยุทธ โอสถสภา, รองศาสตราจารย์, Imgเจริญ ยินดีรัมย์

สื่อสิ่งพิมพ์:pdf

Abstract

A greenhouse experiment was conducted to evaluate the effects of soil amendment on growth, performance and the accumulation of primary nutrients as well as Fe, Zn, Mn and Cu in vetiver. Ratchaburi vetiver ecotype plantlets were planted on iron ore tailings amended with compost and chelating agents (EDTA and DTPA). The results indicated that iron ore tailings contained high concentrations of heavy metals with total Fe, Zn, Mn and Cu concentrations of 63,920, 190, 3,220 and 190 mg kg-1, respectively and low contents of primary nutrients and organic matter. The combination of soil amendment materials, especially DTPA and compost, was more effective than sole chelating agents and sole compost in enhancing vetiver growth, nutrient and heavy metals uptake. The soil amendments used in this study did not affect Fe and Zn translocation from vetiver roots to shoots. However, chelating agent amendment could increase Cu translocation, especially in combination with compost, while it slightly decreased Mn translocation. The average mean translocation factors of Mn, Fe, Zn and Cu were 0.86, 0.71, 0.69 and 0.55, respectively. These results indicated that vetiver is a potential plant for phytostabilization and rehabilitation of iron ore mine areas.

Article Info
Agriculture and Natural Resources -- formerly Kasetsart Journal (Natural Science), Volume 042, Issue 3, Jul 08 - Sep 08, Page 397 - 406 |  PDF |  Page 

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ที่มา:วิทยาสารเกษตรศาสตร์ สาขา วิทยาศาสตร์

หัวเรื่อง:ไม่มีชื่อไทย (ชื่ออังกฤษ : Effect of Chemical and Soil Amendment for the Control of Bacterial Wilt of Potato in Nepal Caused by Ralstonia solanacearum)

ผู้เขียน:ImgShambhu PRASAD DHITAL, Imgดร.นิพนธ์ ทวีชัย, ศาสตราจารย์, Imgดร.วิชัย โฆสิตรัตน, รองศาสตราจารย์, Imgดร.เกษม พิลึก, รองศาสตราจารย์, ImgSundar Kumar Shrestha

สื่อสิ่งพิมพ์:pdf

Abstract

Management to control bacterial wilt of potato caused by Ralstonia solanacearum (RS) (Syn. Pseudomonas solanacearum) race 3, biovar II was carried out by amending infested soils with stable bleaching powder (SBP) and a mixture of urea and lime (urea-lime) at different concentrations and combinations under glasshouse and field conditions of Nepal. Soils infested with RS were treated with either SBP or urea-lime mix two weeks before planting with the highly susceptible and healthy potato seeds cultivar Kufri Jyoti. The SBP treatment at 25 kg/ha provided an effective disease control for both glasshouse and field conditions in which disease suppressions in glasshouse and field experiment were 66.96% and 71.87% for plant infection and 76.94% and 88.89% for tuber infection as compared to nontreated control, respectively. Tuber yields of the SBP treatment at 25 kg/ha were 121.5 g/plant in the glasshouse and 13.54 kg/plot in the field which were not significantly different from the treatment of SBP at 12 kg/ha+urea-lime mix at 428 kg/ha urea and 5 ton/ha lime. The RS population was reduced in all treatments except in nontreated control in which the treatment SBP at 25 kg/ha demonstrated the lowest RS population of 3.01 and 2.06 log cfu/g dry soil at 120 days after amendment in glasshouse and field experiments , respectively. The resuls indicated that the use of SBP at the rate of 25 kg/ha was effective and suitable than the other treatments for the control of bacterial wilt in infested soils under glasshouse and field conditions. Alternatively, soil amendment with 428 kg/ha urea and 5 ton/ha lime can be used to effectively control the bacterial wilt disease where SBP is not available.

Article Info
Agriculture and Natural Resources -- formerly Kasetsart Journal (Natural Science), Volume 031, Issue 4, Oct 97 - Dec 97, Page 497 - 509 |  PDF |  Page 

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ที่มา:วิทยาสารเกษตรศาสตร์ สาขา วิทยาศาสตร์

หัวเรื่อง:ไม่มีชื่อไทย (ชื่ออังกฤษ : Evaluation of Azadirachta indica as a Soil Amendment for Controlling Bacterial Wilt of Tomato)

ผู้เขียน:Imgดร.ชลิดา เล็กสมบูรณ์, รองศาสตราจารย์

สื่อสิ่งพิมพ์:pdf

Abstract

Azadirachta indica A.Juss. (Neem) was evaluated as a possible alternative to soil treatment under greenhouse conditions, for the control of bacterial wilt in tomato plants caused by Ralstonia solanacearum. Thirty-day-old tomato seedlings were planted in 10-inch plastic pots that had been filled with infested soil amended by 5% crushed neem seed. The wilting symptom percentage of plants was determined weekly. The inclusion of the crushed neem seed in the soil significantly reduced the incidence of bacterial wilt on the susceptible cultivar, Seedathip3. Disease incidence in the untreated, infested soil (control) reached 100%, while in the neem-treated samples only 50% disease incidence occurred. Neem affected the bacterial count of R. solanacearum in the soil at 28 and 56 days after planting (DAP). Populations of R. solanacearum decreased at 28 DAP and no bacteria were detected in the neem treatment at 56 DAP. The observed reduction in the pathogen population and the increase in healthy plants in the greenhouse indicated that neem could have an important role in biologically based management strategies for the control of bacterial wilt disease.

Article Info
Agriculture and Natural Resources -- formerly Kasetsart Journal (Natural Science), Volume 043, Issue 2, Apr 09 - Jun 09, Page 239 - 244 |  PDF |  Page 

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