 |
 |
|
 |
ผลงานตีพิมพ์ในวารสารวิชาการAntibiotic resistance profiles of soil bacterial communities over a land degradation gradientผู้แต่ง: Doi, R,  Mr.Pongsak Sahunalu, Professor , Wachrinrat, C, Dr.Sakhan Teejuntuk, Assistant Professor , Sakurai, K, วารสาร:  
|
ผลงานตีพิมพ์ในวารสารวิชาการSemiquantitative color profiling of soils over a land degradation gradient in Sakaerat, Thailandผู้แต่ง:Doi, R, Wachrinrat, C, Dr.Sakhan Teejuntuk, Assistant Professor, Sakurai, K, Mr.Pongsak Sahunalu, Professor, วารสาร: |
ผลงานตีพิมพ์ในวารสารวิชาการIntra- and interspecific variation in wood density and fine-scale spatial distribution of stand-level wood density in a northern Thai tropical montane forestผู้แต่ง:Sungpalee, W, Itoh, A, Kanzaki, M, Sri-Ngernyuang, K, Noguchi, H, Mizuno, T, Dr.Sakhan Teejuntuk, Assistant Professor, Hara, M, Chai-Udom, K, Ohkubo, T, Sahunalu, P, Dhanmmanonda, P, Nanami, S, Yamakura, T, Sorn-Ngai, A, วารสาร: |
ผลงานตีพิมพ์ในวารสารวิชาการHabitat divergence in sympatric Fagaceae tree species of a tropical montane forest in northern Thailandผู้แต่ง:Noguchi, Hideyuki, Itoh, Akira, Mizuno, Takashi, Sri-Ngernyuang, Kriangsak, Kanzaki, Mamoru, Dr.Sakhan Teejuntuk, Assistant Professor, Sungpalee, Witchaphart, Hara, Masatoshi, Ohkubo, Tatsuhiro, Mr.Pongsak Sahunalu, Professor, Mr.Pricha Dhanmanonda, Associate Professor, Yamakura, Takuo, วารสาร: |
 หัวเรื่อง:ไม่มีชื่อไทย (ชื่ออังกฤษ : Preliminary Study on the Transpiration Rate of Tropical Tree Species in Thailand) ผู้เขียน:นายปรีชา ธรรมานนท์, รองศาสตราจารย์, Mamoru Kanzaki, นายพงษ์ศักดิ์ สหุนาฬุ, ศาสตราจารย์, Ladawan Atipanumpai สื่อสิ่งพิมพ์:pdf AbstractThe diffusive resistance and the transpiration rates of 35 species, both exotic and indigenous were measured at four study sites throughout Thailand. The diurnal changes of transpiration rate were observed from morning to evening. The diffusive resistance of most species temporally increased around noon. The transpiration rate fluctuated remarkably with the Photosynthetic Photon Flux Density (PPFD). The effect of leaf ages and the upper and the lower surfaces of leaf on the transpiration rates were discussed. Water consumption in stand level and the transpiration ratio were calculated for E. camaldulensis and A. mangium. E. camaldulensis showed higher water consumption but lower transpiration ratio based on stem biomass compared to A. mangium. |
หัวเรื่อง:ไม่มีชื่อไทย (ชื่ออังกฤษ : Botryodiplodia Stem End Rot of Mango and Its Control) ผู้เขียน:นายปรีชา ธรรมานนท์, รองศาสตราจารย์, นายพงษ์ศักดิ์ สหุนาฬุ, ศาสตราจารย์ สื่อสิ่งพิมพ์:pdf AbstractBotrydiplodia theobromae, the causal organism of stem end rot disease of mango was studied. Isolates of B. theobromae obtained from different sources had different degree of disease severity. Isolate from diseased mango fruit was whe most virulent isolate. Six cultivars of mango were tested on their susceptibility. Okrong was the most susceptible cultivar. Length of pedicel also had an effect on disease development. Disease developed slower on the fruit with longer pedicel than on the shorter one. Control measure of the disease with different means indicated that dipping the fruits in benomyl at concentration of 500 ppm at 52 C for 5 minutes was the most effective mean. |
หัวเรื่อง:ไม่มีชื่อไทย (ชื่ออังกฤษ : Botanical Repellent Against the Diamondback Moth, Plutella xylostella L.) ผู้เขียน:นายปรีชา ธรรมานนท์, รองศาสตราจารย์, นายพงษ์ศักดิ์ สหุนาฬุ, ศาสตราจารย์ สื่อสิ่งพิมพ์:pdf AbstractThe present study reveals two Thai plant species, i.e. Scheffera venulosa Harms (Hanumarn-prasanguy) and Cymbopogon nardus Rendle (Takraihorm) containing some quantities of repellent chemicals. These chemicals affected the diamondback moth larvae under the laboratory conditions. Both of them, moreover, showed an equal magnitude of repelling activity. |
 |
|
หัวเรื่อง:ไม่มีชื่อไทย (ชื่ออังกฤษ : Comparison of Growth Rate of Crossbred Goats on Different Rearing Systems) ผู้เขียน:นายปรีชา ธรรมานนท์, รองศาสตราจารย์, นายพงษ์ศักดิ์ สหุนาฬุ, ศาสตราจารย์ สื่อสิ่งพิมพ์:pdf AbstractGrowth rate of crossbred kids were compared under different rearing systems during preweaning and post-weaning periods. During pre-weaning period, 12 newborn crossbred kids were randomly assigned to two treatments. The first treatment, five newborn kids, 2 males and 3 females, were fed with powder milk; while this in the second treatment, seven newborn kids, 3 males and 4 females, were allowed to be with their dams up to 3 month. Weight gains for treatment 1 and 2 were 4.78 + 0.58 kg; 5.32 + 1.20 kg; respectively, while average daily gain were 53.10 + 6.45 gm; 59.20 + 13.31 gm; the difference was not significant. During post-weaning period, these kids compared under two different rearing systems i.e., stall vs. pasturing feeding. It was found that after 4 months of experimental period, weight gain and average daily gain of stall feeding were 4.90 + 2.56 kg. and 53.84 + 28.15 gm. Respectively. Where as for the pasturing system, weight gain and average daily gain were 6.31 + 1.16 kg. and 69.38 + 12.79 gm. Respectively. The differences between the two feeding systems were not significantly different. |
|
|
|
ที่มา:วารสารการจัดการป่าไม้หัวเรื่อง:ไม่มีชื่อไทย (ชื่ออังกฤษ : นัยของการจัดการผลผลิตมวลชีวภาพและการเก็บสะสมคาร์บอนในสวนป่าไม้ยูคาลิปตัส คามาลดูเลนซีสที่ปลูกในที่ดินรกร้าง 3 ประเภท ในประเทศไทย) ผู้เขียน:นายพงษ์ศักดิ์ สหุนาฬุ, ศาสตราจารย์ สื่อสิ่งพิมพ์:pdf AbstractManagement implication in biomass production and carbon sequestration in E. camaldulensis plantations planted on 3 wasteland types in Thailand was carried out at Takuapa wasteland after tin mining on the sand deposit soils, Ratchaburi wasteland after an over-cutting trees for small-sized firewood production and on lateritic soils and at Somdet wasteland abandoned after slashing and burning forest land for cassava planting and on sandy loam soils. Various experimental treatments were applied for planting this tree species and growth together with survival of trees were recorded periodically for 8 periods in each site for all nearly 5 years. The investigations included the biomass production in response to the treatments applied and change with the stand ages along with the estimation of carbon sequestration in total biomass production of this tree species. The results of investigation suggested that biomass production of this tree species varied correspondingly to the treatments applied in different site quality of the wasteland and stand ages due to the difference in soil fertility conditions in the 3 wasteland types and in 3 sites by which they were in the range of very infertile to the moderate ones in sand deposit, lateritic and sandy loam soils respectively. The appropriate treatments suggested for ameliorating these wastelands besides the plowing prior to tree transplanting in every sites, mulching with Imperata cylindrica grass elevated biomass production to be better than other treatments as well as mixing slime with chemical fertilizer and compost filled into the planting holes exhibited the largest biomass production in sand deposit soils of wasteland after tin mining at Takuapa. Biomass production of this tree species on wasteland with lateritic soils at Ratchaburi highly varied due to the heterogeneous distribution of laterite in soil horizon, however intercropping with some agronomic crops as well as mixed planting in alternate rows with some slow growing tree species, demonstrated the best biomass production in this wasteland type as the former treatment was helpful by frequent hoe plowing and the latter one was beneficial from the wide planting space. On the wasteland with sandy loam soils at Somdet, narrow planting space or high stand density provided the greatest biomass production as compared to other treatments. The investigation was carried out further to obtain the management options by finding out the optimal rotation length for regulating the biomass production for economic benefit and other uses. The analyses were achieved from the relationships between biomass accumulation and stand age using a simple logistic growth model together with the CAI and MAI determination in all stands. The analyses were also for enhancing the potential of the sites for biomass production and carbon sequestration due to stand ages. The studies recommended two management options for these plantations as for tree harvesting at the optimal rotation length or for reserving the carbon sequestration sources in the sites for either economic or environmental conservation purposes. Thus, the studies were considered to demonstrate the management implication in biomass production and carbon sequestration starting from tree planting to harvesting for alternative use or reservation of trees planted in the rehabilitation scheme of 3 wasteland types in Thailand. |
|
 |