 |
|
 |
 หัวเรื่อง:ไม่มีชื่อไทย (ชื่ออังกฤษ : Soybean inCropping System in Central Thailand I.The Effect of Different Planting Methods on the Establishment and Yield of Soybean Planted after Rice) ผู้เขียน: ดร.อภิพรรณ พุกภักดี, ศาสตราจารย์ ,  Veerachai Sriwatanapongse สื่อสิ่งพิมพ์:pdf AbstractThe study of different land preparations and planting methods on the growth and yield of soybean after rice was conducted at Kapangsean Campus of Kasetsart University between January - April 1984. The different land preparations were 1) tillage; 2) no-tillage + straw burned; 3) no-tillage + no straw burned, and 4) no-tillage + rice stubble left over; and three planting methods of 1) drill planting, 2) hill planting, and 3) broadcasting were alternatively arranged into eight treatments. Soybean variety S.J. 4 was planted using the seeding rate of 62.5 kglha. The result of the study indicated that no-tillage + straw burned method provided efficient weed control measures as similar to the tillage operation. Without straw burning, weed infestation was high. The yield of soybean in the tillage plots was higher than no-tillage + straw burned treatments, because tillage provided a better root condition for soybean growth. The yield of no-tillage + no straw burned was low due to weed infestation. Seed size of soybean on no-tillage + no straw burned was smaller than those of other treatments due to weed infestation at the later stage of plant development. |
หัวเรื่อง:ไม่มีชื่อไทย (ชื่ออังกฤษ : Effects of Tillage Systems and Methods of Weed Control on Grain Yield and Some Agronomic Characteristics of Corn) ผู้เขียน:Sudarath Sakhunkhu, นายสุพจน์ เฟื่องฟูพงศ์, รองศาสตราจารย์ สื่อสิ่งพิมพ์:pdf AbstractExperiment on tillage systems and methods of weed control in corn was conducted at the National Corn and Sorghum Research Center during July and November 1982. Eight tillage systems varying from zero tillage to conventional tillage were evaluated in combination with three weeding methods, namely, no weeding, hand weeding, and atrazine spraying. The experimental site was heavily infested with nutsedge and Burmese grass. Tillage systems did not have a pronounce effect on plant height, numbers of plant per unit land area, and grain yield. A delay in flowering was observed in a zero tillage plot. Flowering date, plant height and numbers of plant per unit land 'area were not affected by methods of weed control. However, the no-weeding plot yielded less than hand weeding and atrazine spraying plots. |
 |
 |
 |
 |
 |
หัวเรื่อง:ไม่มีชื่อไทย (ชื่ออังกฤษ : Genetic Study on Post-Harvest Root Deterioration in Cassava) ผู้เขียน:Kazuo Kawano, ดร.เจริญศักดิ์ โรจนฤทธิ์พิเชษฐ์, ศาสตราจารย์ สื่อสิ่งพิมพ์:pdf AbstractPost-harvest root deterioration (vascular streaking) of cassava (Manihot esculenta Crantz) clones (accessions and breeding lines) was evaluated with harvests from different ages, seasons and locations to assess the effect of environmental factors on cassava genotypes. Vascular streaking was sensitive to any of these environmental factors. Genotype x location interaction was highly significant suggesting that final cultivar selection should be carried out in each location. Genetic analysis carried out in one location suggested that inheritance of vascular streaking was, at least partly, controlled by additive factors and quantitative rather than qualitative. Narrow sense heritability of 0.64 was obtained. Vascular streaking was highly significantly correlated with root dry matter content in all the trials conducted during seven years. Since free recombination between resistance to vascular streaking and high root dry matter content may not be possible, the most acceptable balance between these two traits should be defined according to the use of product and edafo-climatic condition of production area prior to selection program. |
หัวเรื่อง:ไม่มีชื่อไทย (ชื่ออังกฤษ : The Economic Importance of the Fruit Fly, Dacus zonatus (Saunders) in Thailand) ผู้เขียน:Saen Tigvatananont, นายสุธรรม อารีกุล, ศาสตราจารย์ สื่อสิ่งพิมพ์:pdf AbstractEgg, larval, pupal and adult stages of the fruit fly, Dacus zonatus (Saunders), lasted on the averages 33.13 hours, and 7.40,11.00 and 71.00 days respectively when reared on a semiartificial diet which consisted of banana pulp, corn flour, Brewer's yeast, sugar, tissue paper, sodium benzoate, hydrochloric acid, and water. They were comparatively close to the oriental fruit fly, Dacus dorsalis Hendel, which lasted on the averages 36.13 hours, and 8.20, 11.50 and 88.40 days respectively when reared on the same diet. Riped fits sampling from trees of Singapore almond (Terminalia catappa Linn.), ma-kok-nam (Elaeocapus madopetalus Pierre), guava (Psidium guajava Linn.), and rose apple (Eugenia javanica Lamk.) in Bangkok area in july, August, December, and February showed the infestation of D. zonatus in association with D. dorsalis. Th'e ratios of adult flies of D. zonatus and D. dorsalis emerged from these fruits were 1 : 1.09, 1 : 0.07,l : 2.88 and I : 1.33 respectively. With its wide range of host and distribution, D. zonatus has become one of the major economic important pests of fruits, comparable to D. dorsalis, in this country. |
หัวเรื่อง:ไม่มีชื่อไทย (ชื่ออังกฤษ : Utilization of Pineapple Waste for Frozen Pineapple Concentrate) ผู้เขียน:นายทนง ภัครัชพันธุ์, รองศาสตราจารย์ สื่อสิ่งพิมพ์:pdf AbstractUtilization of pineapple waste from canning industry for the production of frozen pineapple juice concentrate was studied. It was found that about 72.1% of total pineapple could be used for juice extraction. Only 53% of 14" Brix juice was obtained from the first pressing, and about 54.8% of 7" Brix juice was yielded after being diluted the residue with equal amount of water for the second press in basket type. Under experimental condition, only 59% of 20" Brix juice was concentrated by freezing. Various combinations of highly concentrated juice and fresh juice were performed and subjected to sensory evaluation. The most acceptable blended frozen concentrates were the mixture of 53" Brix juice with the fresh one in the ratio of 1 : 1 to 3 : 1, and also the mixing of 33" Brix juice with added sugar, which were statistically significantly different from the others. Approximately estimated, the cost of production varied from 20 to 24 bath per kg. |
หัวเรื่อง:ไม่มีชื่อไทย (ชื่ออังกฤษ : Screening and Maintenance of Mixed Methanogenic Bacterial Populations) ผู้เขียน:นางสาวเกษร ทวีเศษ, อาจารย์, Susumu Oi สื่อสิ่งพิมพ์:pdf AbstractForty two samples of soil, mud, water and animal excreta from various places within Kamphaengsaen Campus, Kasetsart University and Sue-E-Daang village, Kamphaengsaen District, Nakornpathom, Thailand were tested for methane fermentation. The results indicate that where there is deposit of organic matter there is possibility to obtain mixed methanogenic bacterial populations of both thermophilic and mesophilic types. However, acclimatization of these bacterial populations is essential for obtaining the sludge samples which generate appreciable methane gas yield. The acclimatization was performed such that selected Kamphaengsaen soil and small amount of bentonite were mixed and used as the bedding for the bacteria which were maintained on the mixture of glucose, cellulose, plant residues and nitrogen sources. |
หัวเรื่อง:ไม่มีชื่อไทย (ชื่ออังกฤษ : Effects of Water Depth on Survival of Catfish Hybrids) ผู้เขียน:นายวิทย์ ธารชลานุกิจ, ศาสตราจารย์ สื่อสิ่งพิมพ์:pdf AbstractExperiment of the effects of water depth on the survival of catifish hybrids (C. macrocephalus xP. sutchi) of newly hatched larvae and fry was carried out at Department of Aquaculture, Faculty of Fisheries, Kasetsart University during the period of June to October 1983. Five pairs of fully mature fish spawner of either Clarias of pangasius weighing between 200-300 and 1,200-2,000 gm respectively, were used and the hormone injections method was employed. Eggs of Clarias were used to mix with milt of Pangasius and the eggs of Pangasius were also used to mix with milt of Clarias. |
หัวเรื่อง:ไม่มีชื่อไทย (ชื่ออังกฤษ : Microbial alpha-Amylase Production by Solid Fermentation) ผู้เขียน:Vichien Leelawatcharamas,, Weerasit Kulyakrit, Visit Wongtangskul สื่อสิ่งพิมพ์:pdf AbstractAlpha-amylase production by solid formentation wit11 two strains of bacteria are Bacillus subtilis Bacillus sp. NTU-900. 5 kinds of carbon source, such as wheat bran, rough rice bran, fine rlce bran, cassava and sorghum bran were use. Bacillus sp. NTU-900 is the best for :llpi~a-amylase production in ail carbon source studied. The optimum condition for this strain arc the ratio be~ween rough rice bran to fine rice bran 40 to 30% mixed with water pH 7.0 with the ratio between medium to water 1 to 0.5 and add Na2HP04. 12H,O for growth factor and after incubation at 3 f fo~r 72 h r can ga alpha-amylase activity about 400 unit per gram. |
หัวเรื่อง:ไม่มีชื่อไทย (ชื่ออังกฤษ : Assesment of the Damage of Defoliators on Peanut Grown as the First Crop in Cropping Systems) ผู้เขียน:ณรงค์ จันทรประภา, วีรวุฒิ กตัญญูกุล, วิเชียร บำรุงศรี, ชาญชัย อ่อนสะอาด สื่อสิ่งพิมพ์:pdf AbstractPeanut is one of the crops that usually to be set into the rice based cropping pattern because it does not take roo long to maturity and needs small amount of water and also improves soil texture. However, there are many insect pests attacking peanut especially defoliators. Defoliators, especially leaf minor, are one of the most serious pests of peanut at Pimai site, Nakornrachsima province. To determine the damage caused by the defoliators, the experiments was designed in a randomized complete block with six replications and 6 treatments. Azodrin was sprayed depending on insect damage; ( I ) at 20-25% leaf damage (2) at 50-60% leaf damage ( 3 ) at 80% leaf damage (4) complete control and ( 5 ) recommended protection and untreated check was also included in this experiment. The result showed that yields of peanut were not significantly different among the treatments. It could be concluded that the control of peanut defoliators in the 1980 crop year at Pimai cropping Systems site was not necessary. |
หัวเรื่อง:ไม่มีชื่อไทย (ชื่ออังกฤษ : The Diffusion Coefficient of Seawater in Ao Si Racha) ผู้เขียน:Monton Aongponyoskun สื่อสิ่งพิมพ์:pdf AbstractThe diffusion coefficient of seawater was calculated by using the statistical procedure of periodicity of the tidal current data. When the autocorrelation coefficient became insignificantly different from zero after some time lag, the estimate of diffusion coefficient of seawater was straightforward. The observed velocities of seawater every 10 minutes had been carried out by using SD 6000 current meter 2 meters below sea surface at Ao Si Racha for 20 days (100?55?00?E, 13?11?08?N or 707750E, 1458474N) in October 2004, May 2005 and September 2005. The order magnitude of the diffusion coefficient of seawater in East-West and North-South direction at Ao Si Racha were in the range of 0.3-1.8 m2/sec. The diffusion coefficient of seawater along the North-South direction was higher than in the East-West direction which agreed well with the stronger tidal current condition in the North-South direction. |
หัวเรื่อง:ไม่มีชื่อไทย (ชื่ออังกฤษ : Quaternary Ammonium Compounds Chemical Control of Bacteria in Sugar Cane Juice by Using Quaternary Ammonium Compounds ) ผู้เขียน:Boonsong Saeng-on, นายวิวัฒน์ แดงสุภา, อาจารย์ สื่อสิ่งพิมพ์:pdf AbstractIn the 1982 - 1983 season, it was found that the sugar factories used 4 kinds of chemicals to control microorganism in sugarcane juice. They have the trade names of Maquat-1416, Hexemine X-100, CMA and Lutensit-KIC. All these chemicals belong to the group of quaternary ammonium compound (QAC) and have been approximately used at the concentration of 5 ppm. The effect of 3 quaternary ammonium compounds, Maquat-1416, CMA and Hexemine X-100 were tested. All these compounds were inhibitory at minimum concentration of 10 ppm to the following bacteria : Leuconostoc mesenteroides, Streptococcus sp., Lacto bacillus cello biosus, Bacillus sub tilis, Lactobacillus Fermentum, Erwinia herbicola and Proteus sp. Pseudomonas sp. and Klebsiella sp. were resistant to these chemicals. A study on the bactericidal property of these compounds at concentration of 10 ppm for 20 minutes was also undertaken. It was found that CMA could only inhibit the bacteria but not kill them, while Maquat-1416 could kill many bacterial species. Hexemine X-100 could inhibit most of the test bacteria and could kill just a few. The study indicated that the increase in the concentration of QAC to 10 ppm could control the bacteria in sugarcane juice and could reduce the rate of detrimental sucrose effectively. |
หัวเรื่อง:ไม่มีชื่อไทย (ชื่ออังกฤษ : Utilization of Pineapple Waste for Frozen Pineapple Concentrate) ผู้เขียน:นายทนง ภัครัชพันธุ์, รองศาสตราจารย์ สื่อสิ่งพิมพ์:pdf AbstractUtilization of pineapple waste from canning industry for the production of frozen pineapple juice concentrate was studied. It was found that about 72.1% of total pineapple could be used for juice extraction. Only 53% of 14 Brix juice was obtained from the first pressing, and about 54.8% of 7 Brix juice was yielded after being diluted the residue with equal amount of water for the second press in basket type. |