Biochars can be used as soil amendments for improving soil properties and crop yield. The objective of this research was to study the plant growth, yield, yield components, and seed quality, including nutrients and heavy metals (Pb, Cd, and Hg), in the soybean plant (Glycine max [L.] Merr.) and soil. The experiment was conducted from September 2010 to January 2011 in a greenhouse located in the Dan Khun Thot District, Nakhon Ratchasima Province, Thailand. The research comprised six treatments with four replicates in a completely randomized design. Quail litter biochar (QLB) at rates of 0, 24.6, 49.2, 73.8, 98.4 and 123 g per pot mixture were provided to soybean cv. Chiang Mai 60. The results showed that QLB could be used as a soil fertility improvement and amendment for soybean production with an optimum rate of 98.4 g per pot mixture, which gave the best performance in terms of the number of nodes, height, DM accumulation, total yield, and seed quality. After the experiment, the nutrient contents in the soil increased as the QLB content increased, but the heavy metal residues in the leaves and seeds did not change. However, QLB at levels higher than 98.4 g per pot mixture is not advisable because QLB is alkaline in nature, which may affect soil pH.
The purpose of this study was to compare the learning achievements and skills in agricultural practices between students who learned through the School Agricultural Learning Center (SALC) and those who learned in the normal classroom. Participants were 150 Thai high school students in grade 12 recruited by purposive sampling. The study included three steps: 1) Investigation of basic data for developing the SALC, 2) Establishment and development of the SALC, and 3) Use of the SALC for learning: Facebook and Line were employed as the channels for knowledge exchange, communication on learning activities holding and activities transfer. A posttest-only control group design was employed. The results revealed that the students who learned through the SALC exhibited significantly (p<0.01) higher learning achievements and skills in agricultural practices than those who learned in the normal classroom. Our findings suggest that the SALC is pivotal for improving the students' learning achievements and skills in agriculture and should be promoted to become a natural part of sustainable agriculture education.
The research was to study the conditions of agricultural education of people and the relationship in the management model for non-formal agricultural education in Thailand. The data were collected via in-depth interviews structured with 56 respondents selected via purposive sampling. The results were most of respondents were female and the management model for agricultural education in curriculum and content, the most respondents showed the non-formal agricultural education without certain curriculum and course duration, including self-learning; teaching and learning showed the learning from the agriculture specialists and leaders in the community, obtained the knowledge from real practice; instructional materials showed the learning from real practice, friends' suggestions and conversations; assessment and evaluation showed the evaluation from work's outcome; The relationship of the curriculum and content with education and occupation, the instructional materials with education, the assessment and evaluation with education, the participation with education were statistically significance.
This study aimed to compare learning achievement based on blended learning of dual education between vocational education and upper secondary school curricular programs in Agriculture. The sample groups were students learning through a new way of agricultural farm work and those learning agriculture through normal method. They were 90 sixth year upper secondary school students from Buntharik Wittayakhan School, Ubon Ratchathani, Thailand obtained by purposive sampling. This study consisted of 3 steps: 1) investigation and development of model of a new way agricultural farm work (animal science and teaching form); 2) analysis of consistent components suitable for the development of a new form of animal farm work and teaching/learning form; and 3) using the model together with the integration between theories and teaching methods (Learning by doing, POE, Group process, Blended learning, and field trip). This also included learning through application multimedia for learning exchange and activity transfer. There was control group design after testing. The instrument of research were interview schedule, questionnaire, learning achievement test, set of learning activities, and observation form. Results of the study revealed that the students learning through the dual education or a new way of agricultural farm work had higher learning achievement than that of those who learned through a normal class with a significance level (p>0.01). This finding indicated that learning through a new way of agricultural farm work was very essential to the development of learning achievement and skills. It was also found that the students had a high level of satisfaction with the blended learning and it should be promoted as part of the dual education in agriculture.
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