Rajabhat Agriculture Journal

AGRICULTURAL AWARENESS AMONG HIGH SCHOOL STUDENTS AND TEACHERS IN BENCHAMA MAHARAT SCHOOL UBON RATCHATHANI THAILAND

2025-04-29T14:02:00+07:00

The study assessed agricultural awareness among students (grades 7-9) and teachers at Benchama Maharat School, Thailand. The student respondents, with a balanced gender ratio, were predominantly under 15 years old. Their parents were employed in government or business sectors, with higher education levels and incomes averaging ฿32,598.54 to ฿33,164.01. Teachers, aged 21-59, often held master's degrees and earned about ฿36,815.30 monthly. The internet was the primary information source for both groups.

Students displayed moderate agricultural knowledge (WMs 3.09-3.29), while teachers scored higher (WM 3.60). Attitudes were slightly positive, with students at 3.54-3.82 and teachers at 4.21. Engagement varied, with grade 7 and 8 students moderately involved (WMs 3.25 and 3.24), and grade 9 students and teachers more active (WMs 3.44 and 3.83).

Chi-square tests showed age, gender, grade level, and information access significantly influenced students’ agricultural awareness, while teachers’ awareness was affected by socio-economic factors.

Teachers had higher awareness levels than students, with significant differences confirmed by Tukey HSD tests. Grade 9 students differed in attitude from grade 7 students.

The study highlights the role of socio-demographic factors in agricultural awareness and suggests curricular enhancements to include practical agricultural experiences. The goal is to prepare students as informed citizens aware of agriculture’s significance. Recommendations for Benchama Maharat School include curriculum enrichment, teacher development, experiential learning, and community partnerships to foster agricultural understanding and value within society.

Optimizing Sweet Potato (Ipomoea batatas L.) Yields in Restricted Growing Area

2025-03-14T12:27:06+07:00

Study on the Evaluation of Yield and Quality of Four Japanese Sweet Potato Varieties Grown in a Limited Area as Basic Data to Promote Growth and Yield. A completely randomized experiment with four replications was conducted in the field Training Farm, Faculty of Agriculture, Ubon Ratchathani University, from February to May. The study focused on four Japanese sweet potato varieties: Purple Sweet Road, Silk Sweet, Purple Okinawa Kugami Imo, and Yellow Kiaro Imo. These varieties were tested in the Roi Et soil series. The results showed that the sweet potato varieties exhibited different yields. The accumulated heat units ranged from 1372.6 to 1377.7 GDD. Among the varieties, Purple Sweet Road responded best to the planting area, producing the highest tuber yield of 2348.80 grams per pot. Regarding physical evaluation, the tubers had an elongated shape and size, with firmness values ranging from 12 to 13 Newtons. The peel and flesh color values differed significantly among the four sweet potato varieties. The findings suggest that Purple Sweet Road has the potential to achieve high yields even in a limited planting area.

Effects of Marigold Flower and Peacock Flower Meal Supplementation in Layer Diet on Egg Quality and Yolk Color

2025-05-16T14:46:57+07:00

Egg quality and yolk coloration were investigated following the inclusion of marigold flower (Tagetes spp.) and peacock flower (Delonix regia (Bojer Ex Hook.) Rafin.) meals in the layer diet. The experimental design was completely randomized (CRD), with three treatments and three replicates. The treatment comprised of a standard layer diet (control) supplemented with 1.0% marigold and peacock flower meal. The data were analyzed using analysis of variance, and the mean was calculated using Duncan's multiple range test in a statistical software program. The study discovered that adding marigold flower meal to the diet resulted in a considerably higher yolk color score than the control treatment throughout the first week of the trial. Throughout the eight-week period, the egg color score remained consistently elevated. In week three of the research, supplementation with peacock flower meal can create yolk color differences from the control treatment. Feed intake, hen day egg output, feed conversion ratio per dozen eggs, feed cost per dozen eggs, egg weight, egg albumen height, and egg quality index were all unaffected by either material color. Thus, incorporating 1% marigold and peacock flower meal into the diet may increase yolk color quality. This has no impact on laying hen performance or egg quality.

Isolation and characterization of bacteria Causing bacterial wilt disease from fingerroot (Boesenbergia rotunda L.) in Phichit Province

2025-05-08T10:25:13+07:00

Samples of bacterial Wilt of fingerroot were collected from Phichit province. The Isolated bacteria were, irregular, whitish fluidal single colonies along with pinkish center on triphenyl tetrazolium chloride (TZC) were selected. On nutrient Agar (NA) white colony, entire margin. Total 26 bacteria isolates that fulfilled were further characterized by gram’s staining, physiological, biochemical testing. Results revealed that all of 26 bacterial isolates were Gram negative and used sugars dextrose lactose mannitol maltose and sorbitol which are R. solanacerum. But negative PCR detection with Psol_flic-F/ Psol_flic-R and 759/ 760/Nmutl21:1F/ Nmutl21:2F/ Nmutl23:AF/Nmutl22:InF/ Nmutl22:RR specific primer sets to R. solanacerum. And sequence comparative analysis of 16S rRNA gene from 5 isolates were subjected to BLAST analysis against the non-redundant nucleotide sequence collection at the National Center for Biotechnology Information (NCBI) grouped into Enterobacter spp.

Preliminary assessment on flower phenology of Centella asiatica (L.) Urb. Thailand accession

2025-05-28T10:23:06+07:00

The obstacle crossing between variety of Centella asiatica (L.) Urb Thailand accession produced low rate of seed set. One of many factors could be lack of actual flower phenology data of this species. So, this research is to investigate the flower shedding, anthesis and receptive time of Centella asiatica ‘Ubon rachatani’ line. The results reveal that the flowers shedding continuously, one by one, starting from the central flower. After the central flower shedding 1.22 and 2.44 days, the first and second floret shedding, respectively. In term of the reproductive organs, the stigma was receptive between 05.37-06.28 in the morning. Simultaneous, first anther was dehiscence. The stigma and anther of the central, first floret and second floret flower were compered the timing of receptive and anthesis. The results showed that these were not different period of this phenomenon.

Integrated Management of Galangal (Alpinia galanga(L)) Bacterial Wilt Disease Caused by Ralstonia solanacearum

2025-06-21T09:10:06+07:00

Integrated Management of Bacterial Wilt in Galangal (Alpinia galanga(L)) Caused by Ralstonia solanacearum in Phichit Province. A field experiment was conducted on farmers' plots in Thung Noi Subdistrict, Pho Thale District, Phichit Province, During 2022 - 2024. The objective was to address bacterial wilt and minimize yield losses in red eye galangal by applying the integrated ginger production technology developed by the Department of Agriculture. This approach aimed to enhance yields and enable continuous cultivation on the same land, promoting sustainable production for farmers. This study evaluated the integrated ginger production technology consist of soil preparation with soil fumigation was mixed with urea fertilizer (0-0-46) and lime rate of 80: 800 kg/rai, left for 3–4 weeks to eliminate soil pathogens. A biocontrol solution from Bacillus subtilis (BS-DOA 24) was prepared by mixing 50 grams of inoculum with 1 liter of 2% molasses solution, shaking well, and incubating for 24 hours (shaking 2–3 times). The solution was then diluted with 100 liters of water, and rhizomes were soaked in it for 30 minutes before planting. After planting, BS – DOA 24 was applied monthly. Infected plants showing wilt symptoms were removed, and the surrounding area was treated with BS – DOA 24 solution. Additionally, a mixture of urea and lime (1:10) was applied at 500 grams per plant before covering the hole. Compared to conventional farmer practices (control), the integrated management approach significantly increased yields. During 2022 - 2023, the tested plots produced an average yield of 3,607 kg per rai, which was statistically higher than the control plots that yielded 2,710 kg per rai.The incidence of bacterial wilt was also markedly lower in the tested plots (1.64%) compared to the control plots (17.7%). In 2024, five demonstration plots were established, and a knowledge-sharing event was organized to transfer the technology to 30 participating farmers. Farmers expressed high satisfaction with the soil management techniques and the use of BS – DOA 24, as they effectively controlled bacterial wilt, increased yield, enabled continuous cultivation on the same land, reduced production costs, and ultimately increased farmers' income.

Analysis of Active Compounds and Antioxidant Activity of Northern Local Yams

2025-06-21T09:05:30+07:00

This research aimed to analyze active compounds and antioxidant activity of northern local yams by examining active compounds and initial chemical compositions in local yams. This research aims to support the development of alternative health foods and commercial cultivation, as well as to provide data for the conservation of indigenous plant genetics. The study was conducted on 10 varieties of local yams consisting of Luead yam, Sa yam, Jaoprao yam, Krab yam, Hua Chang yam, Praoyao yam, Mue Suae yam, Aon yam, Sao yam and Lueang yam. A complete block randomized design was used, replicated 3 times, in the farmer's plot of the agricultural product processing community enterprise, Ban Pa Kha, Bo Suak Subdistrict, Mueang Nan District, Nan Province, in the 2024/2025 production season. The experiment found that the 10 local yam varieties gave significantly different yields (P < 0.01), with Luead yam being the variety with the highest yield potential at 3,713.94 kg/rai, and there was a positive correlation between the yield and fresh tuber weight, dry tuber weight and leaf area index. The analysis of the main components and antioxidant activity also found that the starch content, protein content, fiber content, phenolic compound content, flavonoid content, and antioxidant activity by DPPH and ABTS methods were significantly different (P < 0.01). The antioxidant activity of Luead yam extract was strongly correlated with its phenolic and flavonoid contents. The results of this experiment show that Luead yam is a potential variety suitable for planting in the Northern region. For further research, the genetic variation of the native yam should be studied to maintain the genetic diversity that will help maintain the quality of the native yam.

Keywords: Growth, Flavonoids, Phenolic compounds, Antioxidant activity, local yam

Results of Germinated Rice Cultured with Pleurotus ostreatus in Korat Breed Chickens Feed

2025-05-26T14:24:51+07:00

This experiment aimed to study the amount of germinated rice cultured with P. ostreatus that was substituted in Korat Breed Chickens feed. The experiment was based on Completely Randomized Design. There were 4 treatments each treatment contained 4 replications. There were eight 28 days mixed sexes Korat Breed Chickens in each replication. The experiment duration was 4 weeks. The experiment found that chicken feed substituted with 3, 6, and 9 percent of germinated rice cultured with P. ostreatus did not affect growth, feeding rate, food conversion ratio, and feed digestibility (P>0.05). Therefore, it is concluded that germinated rice cultured with P. ostreatus can be substituted in boiler feed for up to 9 percent