Search Result of "Ronnapop Bunjoechoedchu"

About 5 results
Img

ที่มา:วิทยาสารเกษตรศาสตร์ สาขา วิทยาศาสตร์

หัวเรื่อง:ไม่มีชื่อไทย (ชื่ออังกฤษ : Side Effect of three Herbicides on Soil Microorganism)

ผู้เขียน:Imgนางจินตนา ชะนะ, รองศาสตราจารย์, ImgPranee Hamelink, Imgดร.จิระเดช แจ่มสว่าง, รองศาสตราจารย์, Imgดร.สมศิริ แสงโชติ, รองศาสตราจารย์, Imgนายอุดม ฟ้ารุ่งสาง, ผู้ช่วยศาสตราจารย์, ImgRonnapop Bunjoechoedchu, ImgUnnop Ongsakul

สื่อสิ่งพิมพ์:pdf

Abstract

Field experiment was carried out to study the side effect of 3 herbicides, namely; atrazine, ametryn and paraquat, on population dynamics of beneficial and non- target soil microorganism in sugarcane field at Central Laboratory and Greenhouse Complex, Kasetsart University, Kamphaeng-saen Campus. Soil samples were collected before and at 0, 7, 14, 30, 60 and 90 days after application of herbicides. The soil samples were air dried, sifted and divided into two parts. One was used for microorganism isolation on selective media, the rest was used for toxic residues analysis by gas chromate-graph. Forty isolates of bacteria and forty-six isolates of fungi were obtained. It was found that the total population of microorganisms decreased during the first week after application. Accordingly, the amount of residues detected in soil reached the maximum quantity (1774.08 ppb and 112.3 ppb of detected Atrazine and Ametryn, respectively) Half life of atrazine and ametryn in these soil samples were 35 and 6 days, respectively. The isolated soil microorganism that showed antagonistic effects to Fusarium moniliforme, the causal agent of root and foot rot of sugarcane also studied for residual toxicity under laboratory under laboratory condition. The result showed that atrazine and ametryn gave higher inhibitory effect on growth than paraquat.

Article Info
Agriculture and Natural Resources -- formerly Kasetsart Journal (Natural Science), Volume 022, Issue 5, Jan 88 - Dec 88, Page 54 - 66 |  PDF |  Page 

Img

ที่มา:วิทยาสารเกษตรศาสตร์ สาขา วิทยาศาสตร์

หัวเรื่อง:ไม่มีชื่อไทย (ชื่ออังกฤษ : Smoldering Combustion of Thai Cotton Upholstery Fabrics : The effects of Fabric Weught and Multiple Layers of Cover Fabrics)

ผู้เขียน:Imgนางจินตนา ชะนะ, รองศาสตราจารย์, ImgPranee Hamelink, Imgดร.จิระเดช แจ่มสว่าง, รองศาสตราจารย์, Imgดร.สมศิริ แสงโชติ, รองศาสตราจารย์, Imgนายอุดม ฟ้ารุ่งสาง, ผู้ช่วยศาสตราจารย์, ImgRonnapop Bunjoechoedchu, ImgUnnop Ongsakul

สื่อสิ่งพิมพ์:pdf

Abstract

Smoldering behavior of single and multiple layers of 100% Thai cotton fabrics in light, medium and heavy weight covering polyurethane foam and coir fiber batting was studied. A lighted cigarette was used to ignite the fabrics. Test fabrics were not burnt severely. After 20 minute ignition, most fabrics produced a char less than 6 cm. Type of batting, fabric weight and number of layers of cover fabrics significantly affected the char length.. Increasing fabric weight and the number of layers of cover fabrics decreased char length. Coir fiber batting produced smaller char length than polyurethane foam.

Article Info
Agriculture and Natural Resources -- formerly Kasetsart Journal (Natural Science), Volume 022, Issue 4, Oct 88 - Dec 88, Page 284 - 293 |  PDF |  Page 

Img

ที่มา:วิทยาสารเกษตรศาสตร์ สาขา วิทยาศาสตร์

หัวเรื่อง:ไม่มีชื่อไทย (ชื่ออังกฤษ : Studied on Relationship of Kernels Moisture Content, Percentage of Fungi and Aflatoxin Concentration on Preharvest Maize Kernels)

ผู้เขียน:Imgนางจินตนา ชะนะ, รองศาสตราจารย์, ImgPranee Hamelink, Imgดร.จิระเดช แจ่มสว่าง, รองศาสตราจารย์, Imgดร.สมศิริ แสงโชติ, รองศาสตราจารย์, Imgนายอุดม ฟ้ารุ่งสาง, ผู้ช่วยศาสตราจารย์, ImgRonnapop Bunjoechoedchu, ImgUnnop Ongsakul

สื่อสิ่งพิมพ์:pdf

Abstract

Seven varieties of maize including KS4, KS5, KS6, SW1, SW2, KSX 2301 and KTX 2602 were grown at the National Corn and Sorghum Research Center on July 20, 1987. Maize kernels were randomly collected from National ears at 87, 94, 101, 108, 115 and 134 days after planting. Each sample consisted of ten ears, kernels from each ear were collected separately from the base, middle and tip of the ear. Moisture content (MC) of kernels was measured, the kind of fungi and percentage of kernel infection were determined whereas aflatoxin was analysed. The result revealed that kernels collected from all varieties and all parts of the ear at 87 days after planting had over 35% MC. Moisture in kernels was gradually decreased to 25% MC at 115 days after planting. Average values of all fungi found on kernels of all varieties collected at 87 days of the planting were 1 to 2% and A. flavus of 1-1.5%. Percentage of the fungi-infected kernels increased to when kernels collected at 101 days after planting. Among those fungi observed, Penicillium species (20%) were predominant while A. flavus was at 3.5%. Maize collected from 115 day old plants possessed less fungi and less A. flavus. However, more fungi were found on kernels from 134 day old plants. In all varieties, average of detected fungi on kernels collected from the base, middle and tip the ears were 6.78, 4.76 and 5.11% whereas average percentage of A. flavus were 2.7, 1.96 and 1.79, respectively. Aflatoxin was not detected from kernels obtained from all parts of the ear all varieties of 87 day old plants. However, less than 1 ppb of aflatoxin was found from 115 day old plants. Later, concentration of aflatoxin in kernels collected from all parts of the ear and all varieties of 134 day old plants increased to 5 ppb.

Article Info
Agriculture and Natural Resources -- formerly Kasetsart Journal (Natural Science), Volume 022, Issue 5, Jan 88 - Dec 88, Page 75 - 78 |  PDF |  Page 

Img

ที่มา:วิทยาสารเกษตรศาสตร์ สาขา สังคมศาสตร์

หัวเรื่อง:ไม่มีชื่อไทย (ชื่ออังกฤษ : Small Holders of Rubber-based Farming Systems in Songkhla Province Thailand : Problems and Potential Solutions)

ผู้เขียน:Imgนางจินตนา ชะนะ, รองศาสตราจารย์, ImgPranee Hamelink, Imgดร.จิระเดช แจ่มสว่าง, รองศาสตราจารย์, Imgดร.สมศิริ แสงโชติ, รองศาสตราจารย์, Imgนายอุดม ฟ้ารุ่งสาง, ผู้ช่วยศาสตราจารย์, ImgRonnapop Bunjoechoedchu, ImgUnnop Ongsakul

สื่อสิ่งพิมพ์:pdf

Abstract

In dealing with the economic crisis of 1997, rubber-based small holders, along with many other farmers in Thailand, looked for ways to ease their problems. A variety of approaches were found, but a number of constraints in implementing these solutions were also encountered, which reduced farm productivity and decreased the farmers' ability to implement these solutions. Constraints included low production quality, low selling price (the most serious problem), deficient capital for investment, disease and pest problems, deficiency of input factors,and also high cost, inefficient local marketing systems, a generally low level of knowledge of agricultural production in general, shortage of water resources in many areas, low soil fertility, shortage of family labor, and poor local government extension services. Proposed solutions to these constraints include price insurance, a local capital investment fund, better technology transfer, an improved farmers' credit system, and improved infrastructure and financial incentives.

Article Info
Kasetsart Journal of Social Sciences -- formerly Kasetsart Journal (Social Sciences), Volume 022, Issue 1, Jan 01 - Jun 01, Page 79 - 97 |  PDF |  Page 

Img

ที่มา:วิทยาสารเกษตรศาสตร์ สาขา สังคมศาสตร์

หัวเรื่อง:ปัจจัยทางสังคมที่มีอิทธิพลต่อการพัฒนาอาชีพการเลี้ยงโคในภาคใต้ประเทศไทย : กรณีศึกษาเกษตรกรผู้เลี้ยงโคในจังหวัดนครศรีธรรมราช

ผู้เขียน:Imgนางจินตนา ชะนะ, รองศาสตราจารย์, ImgPranee Hamelink, Imgดร.จิระเดช แจ่มสว่าง, รองศาสตราจารย์, Imgดร.สมศิริ แสงโชติ, รองศาสตราจารย์, Imgนายอุดม ฟ้ารุ่งสาง, ผู้ช่วยศาสตราจารย์, ImgRonnapop Bunjoechoedchu, ImgUnnop Ongsakul

สื่อสิ่งพิมพ์:pdf

Abstract

Beef and cattle farming are one of major agricultural occupations for increasing family income of farmer in Nakorn Sri Thammarat province. The beef and cattle development, presently, requires not only technological development but socio-economic development also. The result shows the farmers have interests and needs to improve their production. However, they have faced serious constraints such as deficient knowledge in practice, and management, lack of concentration in practice because, livestock occupation, normally, is supplementary occupation of rubber occupation. The farmers, however, have maintain positive attitude on this occupation as a role of government officer concerning inducing modernized practices and technology toward the efficiently technological transferation. The main source of information in local area is personal media especially, livestock officer, extension worker, and rural officer. Farmers, presently, do not have much interest in participating the membership of local group due to inefficient local group. Characteristics of the rearing system is individual rearing system. It , therefore, had to late capacity building and inefficient local group activity. The farm production energy such as grass for animal feed and family labor are influencing on the production decision in beef and cattle development.

Article Info
Kasetsart Journal of Social Sciences -- formerly Kasetsart Journal (Social Sciences), Volume 022, Issue 1, Jan 01 - Jun 01, Page 27 - 41 |  PDF |  Page