AGROTECHNICAL ASPECTS OF SOIL CULTIVATION AND FERTILISATION OF CULTIVATED PLANTS
Keywords:
Tillage, fertilization, maize, wheat, sugar beet, sunflowers, compactionAbstract
Physically, chemically, microbiological soil properties and mineral nutrition are key elements in plant cultivation technology. Yield of cultivated plants is dependent from many production factors. Yield will be defined by the production factor which was longer in the minimum. It can be human knowledge, or irresponsibility, or carelessness.
Soil compaction is affecting yield. On compacted soils sugar beet yield can decrease for 17.8 tha-1, and sugar yield for 2.09 tha-1. Maize yield decreasing can ranged from 354-2990 kgha-1, and wheat yield decreasing can be from 320-1850 kgha.1.Reason for this yield decreasing is lower soil water capacity ( to 228000lha-1) and lower microbiological soil activity ( 270 times).
Cultivation can improve these properties and increase yield. Optimal tillage depth for sugar beet is 30-35 cm, with sub soling. Three layer tillage yield can be increased for 10.2 tha-1in trial conditions, and root yield for 5.5 tha- 1 ,in production conditions. Soil tillage for sugar beet should be done in October. Previous or later tillage can decrease yield for 4.2 tha-1. Maize tillage should be at 25 cm-deeper tillage has no effect on yield increasing. Wheat tillage should be at 15 cm.
Fertilization is most important productive factor. Fertilization with P and K should be readjust to soil productivity, field yield potential, cultivar/hybrid potential, weather conditions of the year and destination of harvest residues.
When these elements are defined, planned yield and soil fertilization can be determined. Needed amounts of P and K and 30-60% nitrogen amount are necessary before primary tillage in autumn. Remaining nitrogen amounts for strna zita must be applied during the fertilization, and calculation should be based on M-min method. Yield height will be defined by nitrogen position per soil profile depth, and by winter precipitation reserve. Nitrogen for jare okopavine (excepting soybean) should be in 60-120 cm layer.
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References
2. Dobrenov, V., Stanaćev, S.(1981): Zbijenost zemljišta i stabilnost njegovih makroagregata u kulturi šećerne repe pri različitim sistemima iskorišćavanja, Zemljište i biljka
3. Drezgić, P. (1957): Značaj savremene agrotehnike i specijalne obrade i đubrenja mineralnim đubrivima za postizanje maksimalnih prinosa pšenice. Poljop. Vojvodine br.7-8, Novi Sad
4. Drezgić, P. (1968): Uticaj redukovane obrade na prinos kukuruza na černozemu, Sav. poljop., br. 1
5. Drezgić, P. (1976): The influence of long-term reduce tillage in two crop rotation on yield of wheat and maize. Proceedings ISTRO Upsala, Sveden
6. Drezgić, P., Marković, Ž. (1960): Uticaj dubine i načina osnovne obrade na prinos kukuruza na černozemu južne Bačke «Zemljište i biljka», br.2, Beograd
7. Drezgić, P., Marković, Ž., Mekonda, M.(1966): Uticaj redukovane obrade zemljišta na prinos kukuruza na černozemu. Savremena poljoprivreda br.1, Novi Sad
8. Drezgić, P., Spasojević, B., Žeravica, M. (1981): Uticaj višegodišnje redukovane obrade, u dvopoljnom plodoredu, na prinos pšenice i kukuruza. Zemljište i biljka, br.2, Beograd
9. Marinković B., Starčević Lj., Crnobarac J., Jaćimović G., Janković Snežana, Latković Dragana (2003): The yield and quality of sugar beet root depending on the quantity and the position of easily approachable N. International Workshop on Practical Solutions for Manoging Optimum C and N Content in Agricultural Soil II, Prague 25th to 27th June 2003.,.
10. Marinković B., Crnobarac J., Jaćimović G. (2004).: Đubrenje šećerne repe azotom, fosforom i kalijumom u funkciji prinosa i kvaliteta. »Zbornik radova« Sveska 40, Naučni institute
11. Marinković B., i saradnici (2002): Biofizika u poljoprivrednoj proizvodnji, monografija, Novi Sad za ratarstvo i povrtarstvo, Novi Sad, str.373-378.
12. Oussible, M., Crookston, R.K., Larson, W.E.(1992): Subsurface compaction reduces the root and shoot growth and grain zield of wheat, Agronomz Journal, Sabijanje zemljišta, Monografija, Novi Sad, 1999.
13. Starčević Lj., Latković Dragana, Crnobarac,J., Marinković B. (2002): A permanent trial with organic and mineral fertilizers in monoculture and twocrop rotation as a basis of sustainable maize production. Arch. Acker-Pfl. Boden, Vol.48, pp.557-563.
