Weed Science and management (226347)

The subject allows the student the skills and competencies in the area of working with herbicide sprays on their own economy or as a consultant to other professional users of the herbicide. Competent for the activity in the field of transport of herbicides (Advisor, agent, Distributor, agricultural chemist's). Acquires the basic knowledge required for the higher level of learning and working with herbicide sprays

• Lectures
  Lectures will deal with the following topics: weed biology and ecology, weed management, herbicide regtistration process, herbicide nomenclature and classification, application time of herbicides, herbicide absorption, soil herbicide interaction, mode of herbicide
• Laboratory practice/exercises
  laboratory – herbicide efficacy experiment – set up, evaluation of herbicicide experiment, herbicide efficacy and selectivity assessments
• Practicum
  weed seedling determination, MoA herbicide classification, calculation of herbicide dose,
• Field work
  2 h Field lesson at Agriculture faculty Zagreb Experimental station (Sasinovecki Lug)
• Seminars
  herbicide – classification, time of application, mode of action, translocation in the plant

Obveze nastavnika

- to give lectures, exercises and seminars as scheduled; to provide all necessary information and material concerning the Course; to provide consultations; to evaluate seminar papers (laboratory reports) and their presentations; to organize, conduct and evaluate partial tests during the semester and final exam during the exam terms

Obveze studenta

- to attend lectures, exercises and seminars; to create and orally present seminar papers in due time and to deliver written reports on laboratoy alanyses.
Students deliver their written reports on laboratory analyses, which they carried out during laboratory exercises. These reports contain the descriptions of the applied methodology, the obtained results and their interpretations.

1. L –Introduction lesson to world of herbicides and world of weed science. History of plant protection products
2. L - Definition of term weeds, weed characteristic, weed biology – classification of weeds, weed seed and vegetative reproduction , weed dispersal, germination and dormancy of weed seeds
3. L -Field lesson Experimental station Šašinovečki Lug - weed species determination in the field– according to leaf characteristics (broadleaf and narrow leaf weed species), according to life cycle (annual and perennial) and according to scientific classification (family)
4. E Importance of weed identification in early growth stage (seedling stage), differences between monocotyledon and dicotyledonous weed species in early growth stage, keys for seedling identification. Practical (individual) work – weed seedling identification for economic important weed species
5. L Recent weed control, weed control and integrated weed control. Role of herbicides in integrated wed control, advantages and disadvantages of chemical weed control
6. L Screening of herbicides, EU pesticide legislation framework, research goal for new active ingredient, institutions responsable for herbicide registration, zonal system registration in EU
7. L Definition of pesticide (herbicide) hazard and risk terms, toxicology of herbicides, descriptive toxicology (LD50, NOEL, ADI ArFD, MDK), toxicological test
8. L Herbicide nomenclature – chemical name, common name, trade name, classification of herbicides – chemical similarity, mechanism of action, herbicide movement within the plant, selectivity, application and use patterns E Practical work – herbicide classification (HRAC) according to mode of action
9. L Application time – pre-sowing, pre-emergence and post-emergence, E Herbicide formulation – formulation type – dry formulations and liquid formulations, Practical tasks – calculation of herbicide dose
10. L Herbicide absorption of residual herbicide – root absorption, shoot absorption and absorption across plant membrane; foliage absorption of post emergence herbicides L Laboratory experiment for efficacy of different herbicide doses to test species
11. L Herbicide performance in the soil (water solubility, retention by organic matter or soil, vapore pressure, soil half life), persistence in the soil - degradation and transfer process, pedo-climatic factors affecting the persistence in the soil -
12. E Evaluation of herbicide experiment (set up two weeks ago), calculation of germinated seeds, ridicule and coleoptile length and fresh plant biomass, statistical data analysis
13. L Herbicides from the group of inhibitors of photosynthesis, respiration and cell wall synthesis, ALS inhibiotrs, synthesis of carothenoides and EPSH synthase, inhibitors of glutamine synthetase, PPO and DPH synthase, inhibitors of synthesis of lipids, synthetic auxins and AcCoA carboxylase
14. E EPPO standard PP 1/223(2) Introduction to the efficacy evaluation of plant protection products , efficacy testing – visual and measurable, crop safety assessment – visual and measurable
15. S Student presentation about course content

1. A.H. Cobb A.H., Kirkwood R.C. (2000). Herbicides and their mechanisms of action
2. Hance (1980). Interactions between herbicides and the soil
3. Herbicide handbook (ninth edition) - ed. Senseman S.A. (2007)
4. Relevant scientific and professional work of teacher (available at Merlin)
5. Cobb A.H., Reade J.P.H. (2010). Herbicides and plant physiology

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