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2010, vol. 36, br. 2, str. 129-137
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Proizvodnja šećerne repe u uslovima konvencijalne i konzervacijske obrade zemljišta
Production of sugar beet using conventional and conservation tillage
Projekat: Projekat Ministarstva nauke Republike Srbije, br. 114-451-00707/2009
Sažetak
U radu se ukazuje na značaj uvođenja zaštitnih tehnologija obrade i setve osnovnih poljoprivrednih kultura. Navode se prednosti, ali i ograničenja u primeni novih tehnologija obrade i setve. Ističe se da vrhunske rezultate sa novim tehnologijama ne treba očekivati u kratkom već u dužem vremenskom periodu, ali da je prelazak sa konvencijalne na konzervacijsku obradu i direktnu setvu nužan, zbog ekoloških, energetskih i ekonomskih razloga. Ukazuje se na problematiku primene zaštitne obrade u proizvodnji šećerne repe. Rezultati sopstvenih istraživanja ukazuju na to da sa konzervacijskom tehnologijom mogu da se stvore pogodni uslovi za nicanje, rast i razvoj biljaka i da takav način gajenja šećerne repe rezultira boljim prinosom (7%) nego sa postojećom - konvencionalnom tehnologijom. Konzervacijska obrada doprinosi održavanju zemljišta u dobrom poljoprivednom i ekološkom stanju i zbog toga je treba uvoditi u praksu i kod nas.
Abstract
This paper focuses on the importance of introduction of conservation tillage and sowing technologies for basic cultivars. Reviewed are advantages and disadvantages of these novel tillage and sowing technologies. It is emphasized that exquisite results of application of these technologies are not to be expected immediately. However, transition from conventional to direct sowing is important from the aspects of environment, energy, and economy. In order to shed more light on ambiguous information on sugar beet yield when using conservation technologies, the authors conducted a comparative experiment to establish the effects of tillage on yield. The same sowing aggregate regimes were applied for both conventional and conservation soil tillage. Sowing was performed varying the depth of seed deposition, and the working speed of the sowing aggregate. Soil compaction on the experimental plot was monitored due to fact that, with conventional tillage technology, compaction has greater impact on growth, development, and yield. Significant differences were established between compactions of soil profiles for the two applied tillage technologies. Soil profile compaction in conventional tillage allows better carrying properties due to vertical orientation of soil porosity. The results of our investigations indicate that conservation tillage favorably influences emergence, growth, and development of crops, and, applied to sugar beet cultivation, it results in a 7% higher yield compared to the already used conventional technology. Conservation tillage contributes to good soil maintenance, regarding both environmental and agricultural aspects, and should see wider domestic application.
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