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Agricultural Machinery I

Course developers

Prior knowledge

LauZ4066, Hydraulics and Hidraulic Drive I

LauZ4190, Theoretical Mechanics II

MašZ4056, Hydraulics and Hydraulic Drive II

Meha4008, Theoretical Mechanics I

Course abstract

Environment and object of the work of agricultural machinery: soil, stalked, liquid, pouring, absorbent, biologically active, chemically aggressive materials. Technologies of agricultural operations: regimes, energetic and costs. Conditioning and storing of plant production. Constructions of machinery: agrotechnical requirements, technological parameters, technological and kinematic scheme.

Learning outcomes and their assessment

• Knowledge of agricultural machines, their construction, operation and control.
• Skills to apply knowledge in practical use of machines. • Competence of agricultural machinery evaluation, selection and usage.

Course Content(Calendar)

Full time studies:
1. Plough - 4h. Test. Ploughs and plowing.
2. Stubble cultivators - 3h.
3. Seedbed preparation cultivators - 4h. Test. Cultivators and their application.
4. Power harrows - 3h.
5. Row crop cultivators - 4h. Test. Row spacing and soil compaction.
6. Harrows, rollers, cutters - 3h.
7. Combined tillage units - 3h.
8. Organic manure spreaders - 3h.
9. Fertilizer spreaders - 4h. Test. Fertilizing machines.
10. Cereal seeders - 3h.
11. Single seed drills - 4h. Seeding and planting machines.
12. Planting machines - 3h.
13. Plant chemical protection machine - 3h.
14. Aerosol generators - 4h. Test. Plant chemical protection machines.
15. Grass harvesting machines, agrotechnical requirements for machines - 4h.
16. Lawn mowers, grass conditioners - 4h.
17. Rakes - 4h.
18. Self-loading trailers and presses - 4h. Test. Lawn mowers, rakes and collection trailers.
Part-time studies: All topics specified for full-time studies are implemented, but the number of contact hours is 1/2 of the specified number of hours

Requirements for awarding credit points

Exam

Description of the organization and tasks of students’ independent work

Preparation for tests using study materials, literature specified in the program, and consultations with the course teacher.

Criteria for Evaluating Learning Outcomes

The exam grade is calculated as the arithmetic average of the test and exam test grades.
1st test – Soil tillage machines. 2nd test – Spreading machines. 3rd test – Straw harvesting equipment. A successful grade for the test is due if at least 50% of the test questions are answered correctly.

Compulsory reading

1. Engineering Principles of Agricultural Machines [tiešsaiste]. A.Srivastava, C.Goering, R.Rohrbach, D.Buckmaster. 2nd ed. ASABE, 2006. 559 p. [Skat. 13.02.2022.] Pieejams: https://tripleis.org/wp-content/uploads/2019/11/epdf.pub_engineering-principles-of-agricultural-machines.pdf
2. Smidzinātāju rokasgrāmata. J.Āboliņš u.c. Ozolnieki: LLKC, 2001. 144 lpp.
3. Organiskā mēslojuma izkliedēšanas tehnoloģijas [tiešsaiste]. K.Tamm, R.Vettik, P.Viil, T.Võsa, J.Kažotnieks. - [B.v.]: Biedrība Zemnieku saeima, 2017. 31 lpp. [Skatīts 17.02.2022.] Pieejams: https://zemniekusaeima.lv/wp-content/uploads/2016/01/Greenagri_Organiska_meslojuma_izkliedesanas_tehnologijas-1.pdf

Further reading

1. Kažotnieks J. Arkli. Rīga: [b.i.], 2006. 27 lpp.
2. Pinnis U. Kultivatori un dziļirdinātāji. Ulbroka: Alfa Lukss, 2006. 56 lpp.
3. Palabinskis J. Organisko mēslu izkliedētāji. Jelgava, 2004. 64 lpp.
4. Kažotnieks J. Smidzinātāji. Rīgas, 2006. 32 lpp. 5. Kažotnieks J. Sējmašīnas. LLKC,
Ozolnieki, 2006. 26 lpp.

Periodicals and other sources

1. Žurnāls Landtechnik-Agricultural Engineering, Pieejams: https://www.landtechnik-online.eu.
2. Žurnāls Agro Tops. Pieejams: https://www.la.lv/agrotops 3.Žurnāls Saimnieks LV. Pieejams: http://www.saimnieks.lv.
3. Lauksaimniecības mašīnu izplatītājfirmu mājas lapas.

Notes

Compulsory course for the full-time and part-time studies of the academic bachelor's study program "Agricultural Engineering" sub-program "Agricultural Machinery"