Weed Science (Advanced Course)
| Numbering Code | G-AGR01 5AA10 LJ78 | Year/Term | 2022 ・ Second semester |
|---|---|---|---|
| Number of Credits | 2 | Course Type | Lecture |
| Target Year | Target Student | ||
| Language | Japanese and English | Day/Period | Fri.5 |
| Instructor name | KUROKAWA SHUNJI (Graduate School of Agriculture Professor) | ||
| Outline and Purpose of the Course |
1. Biological characteristics of weeds are overviewed. 2. Life history strategies of weeds are presented from the view points of the adaptation to human disturbance. 3. Evolution of mimicry to crop of weed are overviewed. 4. Evolution of herbicide resistance of weeds are lectured. |
||
| Course Goals | Understand the relationship between what is learned in this course and weed habitats by gaining a full grasp of the life history characteristics of arable weeds. | ||
| Schedule and Contents |
1-3 weeks of lectures are planned for each of the topics, including the following: 1. Principles of weed control and the growth of weeds in agro-ecosystems. The principles of sustainable and stable weed control in arable lands and the ecological niches of weeds in paddy and upland fields will be explained. 2-3. The comparative biology of crops and weeds; the gene flow between crops and weeds The biological characteristics of weeds will be compared to those of crops based on the frequency and extent of habitat disturbance. In addition, the possibility of hybridization between crops and their wild relatives will be discussed from the perspective of weed control. 4-6. Reproductive characteristics, propagation, seed dormancy of weeds The sexual reproductive characteristics and asexual reproductive characteristics of weeds will be discussed from the perspective of weed control. In addition, the characteristics of diaspores and their propagation patterns will be discussed from the perspective of dormancy in diaspores. 7-9. Mimetic weeds and the evolution of herbicide-resistant weeds Topics covered include: hand weeding and the evolution of mimic weeds; the use of herbicides and the evolution of herbicide resistance. In addition, weed problems associated with the cultivation of genetically modified herbicide-resistant crops will be explained. 10-12. Invasion and spreading of exotic weeds The spread of invasive exotic weeds will be discussed based on their life history strategies. 13-15. Evolution of life history characteristics of weeds To summarize the course, there will be a comprehensive discussion on the evolution of life history characteristics of weeds from the viewpoint of weed control. |
||
| Evaluation Methods and Policy | Grading will be based on a comprehensive assessment of attendance, reports, and the periodical examination. Refer to '2017 Guide to Degree Programs' for attainment levels of evaluation. | ||
| Course Requirements | Basic knowledge of weed science is required. | ||
| Study outside of Class (preparation and review) | Preview materials to be handed out in advance. Review the topics assigned in class. | ||
| References, etc. |
Ecology of Weeds., Nemoto, M., (Asakura Publishing Co., Ltd.), ISBN:4-254-42030-7 Natural History of Wheat., Sato, Y. & Kato, K., (Asakura Publishing Co., Ltd.), ISBN:4-254-42030-7 Changes in Farming and Environmental Problems., Sato, Y., (Hokkaido University Press.), ISBN:978-4-8329-8190-4 |
||
