12 research outputs found
Status of the Program on Sustainable Agriculture and Development at Higher Educational Institutions in Thailand
No full textRoles of Kasetsart University in Promoting Agricultural Education for Sustainable Development
No full textdepartmental bulletin pape
Status of the Program on Sustainable Agriculture and Development at Higher Educational Institutions in Thailand
No full textdepartmental bulletin pape
Roles of Kasetsart University in Promoting Agricultural Education for Sustainable Development
No full textBiological Control of Root-Knot Nematodes (Meloidogyne enterolobii) in Guava by the Fungus Trichoderma harzianum
No full textdepartmental bulletin pape
How does the government improve the competitiveness of SMEs? lesson learned from Thailand
No full textThe purpose of this study is to describe the strategy pursued by the Government of Thailand in collaboration with existing stakeholders in increasing the competitiveness of SMEs amidst the invasion of foreign manufacture-based products. The method used is observation and in-depth interviews at SME product canters, SME product marketing places in tourist destinations, and related parties. Observations were made for 5 years 2018-2023, however, in-depth observations were made in January-March 2023. The results of the analysis show that the competitiveness of SMEs in Thailand is very good due to support from universities, private businessmen (Ventura capital), the government: (innovation support organizations, and state-owned entrepreneurs), large companies in the form of CSR, and various parties who are very concerned about advancing SMEs. SMEs that already have high competitiveness with quality products, will be encouraged to move up to a class that is ready to export. Only SMEs that already have "four stars" are allowed to export because the quality of their products is beyond doubt and can even be proud of
Biological Control of Root-Knot Nematodes (Meloidogyne enterolobii) in Guava by the Fungus Trichoderma harzianum
No full textSpecies characterization and population dynamics of Hirschmanniella mucronata in lowland rice fields managed under conservation agriculture in Cambodia
Get PDFThe rice root nematodes, Hirschmanniella spp., are considered the predominant plant-parasitic nematode in the clay soils of Battambang’s lowland rice fields in Cambodia. In this study, we compared the nematode population dynamics, rice yield parameters, and soil organic matter content in lowland rice fields under conservation agriculture (CA) system with conventional tillage systems with green manure management (GMCT) or with plough-based tillage (CT) systems. Results demonstrated that GMCT for one year (GMCT1) and the long-term CA for seven years (CA7) reduced nematode densities in both soil and in rice roots, almost throughout the study period, compared to the CT. In the GMCT with tillage for two years (GMCT2), however, the Hirschmanniella spp. densities were high at the beginning, but reduced at later stages of the cycle. For rice yield components and soil fertility, CA7 proved to be effective in increasing plant height, the number of tillers/plant and soil organic matter. Based on molecular, morphometric and morphological features, the nematodes were identified as H. mucronata. The phylogenetic trees of three nuclear markers displayed similarity among 18S, 18S-ITS1-5.8S and D2D3 regions, identifying nematodes as H. mucronata clade I (bootstrap values of 79–100) and related to H. kwazuna and H. loofi sisters. Morphologically the long body (1,512–2,665 µm), long stylet (25–29 µm) and obvious mucron at the end of terminus matched with H. mucronata. Therefore, long term CA, with reduced tillage and using leguminous cover crops provides a promising system to control H. mucronata and promote rice yields and soil organic matter in Cambodian lowland rice fields
Systemic defense activation by COS-OGA in rice against root-knot nematodes depends on stimulation of the phenylpropanoid pathway
Get PDFActivation of induced plant resistance to control pests and diseases is regaining attention in the current climate where chemical pesticides are being progressively banned. Formulations of chitosan oligomers (COS) and pectin-derived oligogalacturonides (OGA), COS-OGA, have previously been described to induce resistance against fungal diseases in different crop plants. Here, we investigated their potential and mode-of-action as preventive measures to control root-knot nematode Meloidogyne graminicola infection in rice. The results show a significant reduction in root-galling and nematode development in rice plants that were treated through foliar application with the COS-OGA formulations FytoSol® and FytoSave® 24 h before nematode inoculation. Hormone measurements, gene expression analyses, corroborated by treatments on salicylic acid (SA) and jasmonic acid (JA)-mutants indicated that the systemic COS-OGA induced defense mechanism against nematodes is not based on SA or JA activation. However, phenylalanine ammonia lyase (PAL) gene expression in roots as well as enzymatic PAL activity in the shoots were significantly induced 24 h after foliar COS-OGA spraying in comparison with untreated plants. COS-OGA-induced systemic defense was abolished in the rice OsPAL4-mutant, demonstrating that COS-OGA-induced defense is dependent on OsPAL4 activation in rice plants
