 |
|
|
|
 |
|
 หัวเรื่อง:ไม่มีชื่อไทย (ชื่ออังกฤษ : Growth Stage Identification in Mungbean (Vigna radiata (L.) Wilczek)) ผู้เขียน: ดร.อภิพรรณ พุกภักดี, ศาสตราจารย์ ,  Vilaiwan Promkham, Chutanart Chuangpetchinda, Sawai Pongkao, Chalermpol Lairungrueng สื่อสิ่งพิมพ์:pdf AbstractGrowth stage descriptions were developed for Mungbean (Vigna radiata (L.) Wilczek) based on measurements and visual observations of Mungbean plants grown in four successive experiments conducted from May 1986 to November 1978 at Chainat Field Crop Research Center, Department of Agriculture and Department of Agronomy, Kasetsart University. It is proposed that the growth stages of Mungbean be defined in terms of vegetative (V) and reproductive (R) stages. The V stages are numbered V(o) – V(n), and are determined by counting the number of developed nodes on the main stem, beginning with the cotyledonary node as zero. The last node counted must have its trifoliate leaf sufficiently expanded so that leaflets are unfolded and flat in appearance. The R-stages proposed are R1 (first open flower), R2 (first pod), R3 (start of seed growth), R4 (full seed), R5(first mature pod), R6(1st harvest) and R7 (2nd harvest). The V and R stages can be measured separately and concurrently and apply to a population, or to single plants. When Mungbean cultivars, Kamphaeng Saen 1 (KPS-1), Kamphaeng Saen 2 (KPS-2), Uthong 1 and Chainat 60 were grown in a randomized complete block design at Chainat Field Crop Research Center (Chainat FCRC) in May and August 1986. Also at Kasetsart University (KU) cultivars KPS-1, KPS-2, and U-thong 1 were grown in May and August 1987. It was found that, cultivars, KPS-1, KPS-2 and U-thong 1 grown at KU matured in 86 and 78 days at May and August planting. At Chainat, cultivars KPS-1, KPS-2 and U-thong 1 matured in 58 days regardless of planting dates, while Chainat 60 matured in 51 and 52 days for May and August planting respectively. At all locations tested, all mungbean cultivars at least completed their vegetative growth up to V6 before shifting to R1. In many cases, the plants extended their vegetative growth up to V, before flowering depending on genotypes, planting dates and locations. To complete its life cycle, the mungbean plants consequently exhibited R1 up to R2 growth stages. The propose growth stage description of mungbean should be potentially useful and facilitate a common understanding among researchers and extension personnels and should provide a more precise basis for scheduling cultural practices for mungbean. |
หัวเรื่อง:ไม่มีชื่อไทย (ชื่ออังกฤษ : Rate and Duration of Dryweight Accumulation in Seed of Five Mungbean Varieties which were Planted in the Farmer Fields and its Relationship to Yield) ผู้เขียน:ดร.อภิพรรณ พุกภักดี, ศาสตราจารย์, Ek-Nuan Shuwisitkul สื่อสิ่งพิมพ์:pdf AbstractThe dry weight accumulation rate and duration of effective seedfilling period in rnungbean (Vigna radiatn (I,.) Wilczek) varieties CES 87, CES 14, Pag-asa, U-Thong 1 and local variety were measured in three successive experiments planted in the farmer fields in Bangpae district of Rachaburi Province. The objective was to evaluate the relationship between growth rate of individual mungbean seed and grain yield. The result from this study indicated that high yielding varieties of mungbean also had high rate of drymatter accumulation in seed. However, we were not able to demonstrate that relationship between yield and duration of seed filling period existed in mungbean. Positive correlation between rate of seed filling period and yield per plant was found. However, such relationship between rate of seed Filling period and seed size was not obtained. |
หัวเรื่อง:ไม่มีชื่อไทย (ชื่ออังกฤษ : The Improvement of Grape Quality and Production : Fruiting Responses of Some Grape Varieties to Gibberellic Acid) ผู้เขียน:ดร.อภิพรรณ พุกภักดี, ศาสตราจารย์, กมลรัฐ อินทรทัศน์ สื่อสิ่งพิมพ์:pdf AbstractFruiting responses to four concentrations of gibberellic acid were studied on seven grape varieties namely Sultana, Black Sultana, Beauty Seedless, Ruby Seedless, Delight, Early Muscat and Italia. These grape vines were grown at the private vineyard in Samut Sakhon province. Gibberellic acid at the concentrations of 0, 25, 50 and 75 ppm were aprayed to the flower clusters at two weeks after full bloom stage. The results showed that GA3 applications were effective grape varieties was less affected by GA3 application. |
หัวเรื่อง:ไม่มีชื่อไทย (ชื่ออังกฤษ : The Effect of Fertilizer and Irrigation on Yield and Quality of Rubber (Hevea brasiliensis) Grown in Chanthaburi Province of Thailand) ผู้เขียน:Sopheaveasna, สาลี่ ชินสถิต, ดร.อภิพรรณ พุกภักดี, ศาสตราจารย์, ดร.พูนพิภพ เกษมทรัพย์, รองศาสตราจารย์ สื่อสิ่งพิมพ์:pdf AbstractThe experiment on effects of fertilizer and irrigation on yield and quality of rubber (Hevea brasiliensis) grown at Chanthaburi province is an on-farm research conducted at the Rubber Plantation of Sindane Thai Rubber Co, Ltd. The objective of the experiment was to investigate the effect of irrigation and fertilizer on yield and quality of rubber. Experimental design used was a split plot with three replications, having irrigation and non irrigation as main plots and three formulas of NPK fertilizer of 15-7-18, 30-5-18 and 23-5-18 as subplots factorially arranged within each main plot. The trial was conducted on the clay loam soil of Klongluk series having the pH of 5.0 with 1.6% organic matter, 80.9 and 134 ppm of P and K respectively. The result of the experiment revealed that irrigation treatment increased the yield per tree per tapping, monthly production and also total rubber production per year. Latex yield also increased as the result of irrigation treatment. Under non-irrigation, the percentage of dry rubber content (DRC) was higher than those of irrigation treatment. Percentage of DRC was negatively correlated with both rubber yield and latex yield only under non-irrigation treatments. Result of latex diagnosis analysis showed that sucrose and total solid content (TSC) of samples were not affected by irrigation and fertilizer treatments. Inorganic phosphate (Pi) increased in the irrigated plot than those of non-irrigation but was not significantly differed (P>0.05) among others. Thiol content in latex samples showed the significant different (P<0.05) between irrigated and non-irrigated plots. Girth of rubber increased as the result of irrigation application while the percentage of tapping panel dryness (%TPD) was higher in non-irrigation treatment. The result of this study did not showed the effect of fertilizer treatments in any of the parameters measured. It may be possible that it would take a longer time than the experimental period before the effect of fertilizer will be pronounced. |
 ผลงานตีพิมพ์ในวารสารวิชาการCultivar-by-cutting height interactions in Napier grass (Pennisetum purpureum Schumach) grown in a tropical rain-fed environmentผู้แต่ง:Jorgensen, ST, Dr.Aphiphan Pookpakdi, Professor, Tudsri, S, Stolen, O, Ortiz, R, Christiansen, JL, วารสาร:  
|
|
|
|
|
|
หัวเรื่อง:ไม่มีชื่อไทย (ชื่ออังกฤษ : Reduction of Chemical Application in Soybean at Farm Level I. Comparison between Two Wet Seasons Soybean Production) ผู้เขียน:ดร.อภิพรรณ พุกภักดี, ศาสตราจารย์, นุกูล อ่อนนิ่ม สื่อสิ่งพิมพ์:pdf AbstractThe experiments were conducted in the farmer fields at Thongphaphoom district of Kanchanaburi province, Thailand in the year of 2000 and 2001. Soybean cultivar “Chakkrabhandhu no.1” were grown in the upland soil on 20 July 2000, and 20 July 2001 respectively. The harvesting dates for both experiments were in the first week of November. Treatments composed of the combinations of chemical and non-chemical control for weed, insect and soil fertility designed as no chemical, less chemical and moderate chemical application. The given treatments were compared with farmer practices in which various kinds of chemical at different amounts were used in soybean production. Results of two experiments conducted revealed that yield of soybean in the year 2000 was higher than in 2001 due to less weed infestation. Biophoska organic fertilizer in less chemical treatment and triple super phosphate (TSP) in moderate chemical treatment were the main cause of high yield. To grow soybean successfully in the rainy season, herbicides were still needed. In both years of 2000 and 2001, insect infestation were mild, therefore the use of neem extract from Azadirachta indica A. as insect repellant seemed enough for controlling insects in soybean fields. This study indicated that in order to grow soybean in the rainy season, herbicides are still needed to suppress weed. Growth and yield of soybean can be enhanced by using organic fertilizer or TSP. |
|
หัวเรื่อง:ไม่มีชื่อไทย (ชื่ออังกฤษ : Effects of Plant Spacing on Growth and Yield of Cotton Cultivar Sri Sumrong 60 Growth in Dry Season) ผู้เขียน:นางสาวแอนนา สายมณีรัตน์ , ดร.อภิพรรณ พุกภักดี, ศาสตราจารย์, Yves Crozat, ดร.พูนพิภพ เกษมทรัพย์, รองศาสตราจารย์ สื่อสิ่งพิมพ์:pdf AbstractThe objective of this experiment was to study the effects of narrow spacing on growth and yield of cotton cultivar Sri Sumrong 60. Trial was conducted at National Corn and Sorghum Research Center, Pak Chong, Nakhon Ratchasima from January to July 1996. The design of the experiment was a split plot design with 3 replications. Main-Plot treatments consisted of two between row spacing, 1.0 and 0.5 m and the sub-plots were two within row spacing of 0.1 and 0.2 m. Resolts revealed that no spacing effect was found on yield and yield components of cotton. However, the row spacing of 1.0 m had trend to give approximately 10% higher seed cotton yield than of 0.5 m. And within row spacing of 0.1 m also had trend to give 13.5% higher seed cotton yield than of 0.2 m. It is dued to higher value of the efficiency of light conversion of cotton grown in within row spacing of 0.1 m. |
หัวเรื่อง:ไม่มีชื่อไทย (ชื่ออังกฤษ : The Relationship Between Pulp-Soaking Symptom in Pummelos (Citrus grandis L. Osbeck) and Their Struture, Calcium Content, Pectin Methylesterase Activity a ผู้เขียน:ดร.อภิพรรณ พุกภักดี, ศาสตราจารย์, กมลรัฐ อินทรทัศน์ สื่อสิ่งพิมพ์:pdf AbstractSteuturally, Juice-sacs of Khao-thongdee cultivar contained epidermal cells which have thicker outer wall than Khao-pan, and also contained fewer layers of subepidermal cells. No change was found in the outer wall of epidermal cells but the side walls of both epidermal and subepidermal cells were weaken after storage. Calcium content in Khao-thongdee was about double the amount in Khao-pan. Pectin-methylesterase activity was also significantly higher in Khao-thongdee. The relationship between calcium content. Pectin-methylesterase activity and pulp-soaking sympyom, however, could not be clearly explained. Difference in internal concentrations of carbon dioxide and ethylene between the two cultivars were small and were not likely to be the factors involving the development of the symptom. |