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Maize cultivation in continuous cropping supports Johnsongrass (Sorghum halepense (L.) Pers.) presence

dc.creatorSimić, Milena
dc.creatorDragičević, Vesna
dc.creatorBrankov, Milan
dc.date.accessioned2022-10-19T09:25:15Z
dc.date.available2022-10-19T09:25:15Z
dc.date.issued2019
dc.identifier.isbn978-86-7834-340-7
dc.identifier.urihttp://rik.mrizp.rs/handle/123456789/1010
dc.description.abstractDivlji sirak (Sorghum halepense (L.) Pers.) je čest korov u usevima kukuruza u Srbiji. To je problematična, višegodišnja, travna vrsta koja ima sličan životni ciklus i potrebe za osnovnim ekološkim faktorima kao i kukuruz. Povećana zastupljenost divljeg sirka značajno smanjuje prinos kukuruza. Za njegovo suzbijanje najčešće se koriste herbicidi, ali je njihova dugogodišnja primena dovela do pojave većeg broja rezistentih biotipova. Stoga je ključno za strategiju efikasnog suzbijanja divljeg sirka primeniti više različitih mera čim se sirak pojavi u polju i ne čekati da se adaptira i prenamnoži. Gajenje kukuruza u monokulturi povećava nivo zakorovljenosti divljim sirkom i potpomaže njegovo vegetativno i generativno razmnožavanje zbog čega ovu meru treba eliminisati iz tehnologije gajenja kukuruza. Istraživanja su sprovedena u Institutu za kukuruz Zemun Polje, Beograd tokom 2009–2018. godine. Ogled je postavljen sa ciljem da se ispita kako različiti sistemi gajenja utiču na produktivnost i nivo zakorovljenosti kukuruza, posebno divljim sirkom. Proučavana je varijanta sa gajenjem kukuruza u monokulturi sa i bez primene herbicida izoksaflutol + metolahlor (750 + 960 g a.m.). Hibrid kukuruza ZP 606 je posejan u gustini 59.500 biljaka ha-1 . Zastupljenost svih korova i posebno divljeg sirka je određivana 4–5 nedelja posle tretiranja merenjem sveže nadzemne mase po m2 . Sveža masa korova se značajno menjala u zavisnosti od agro-ekoloških uslova godine i primene herbicida, kao i interakcije ova dva faktora. Prosečno za svih deset godina, ukupna sveža masa korova na kontroli je bila 2614,00 g m-2 a udeo divljeg sirka 37,91%, dok je na tretiranoj površini ukupna masa korova bila 543.00 g m-2 a udeo divljeg sirka 45,05%, što ukazuje da herbicidi ne mogu biti jedina mera za suzbijanje divljeg sirka u kukuruzu. Sveža masa divljeg sirka se povećavala tokom godina gajenja kukuruza u monokulturi iako je primena herbicida, u proseku, smanjila svežu masu ove vrste za 75,31%. Umesto gajenja kukuruza u monokulturi treba uvesti plodored kako bi se smanjila zakorovljenost divljim sirkom i koristile manje količine herbicida.sr
dc.description.abstractJohnsongrass (Sorghum halepense (L.) Pers.) is very common weed in maize fields in Serbia. It is a troublesome, perennial grass weed that has similar life cycle and demands for growth conditions as maize. Dense Johnsongrass infestations severely limited maize production. The most common measure for its control is chemical treatment, but after many years of continuous herbicide application, different types of Johnsongrass resistance have been developed. The key tools to manage this weed are to implement multiple control strategies when Johnsongrass is first observed and not wait until it is firmly established. Maize production in continuous cropping increases level of Johnsongrass infestation, supporting it’s vegetative and seed propagation, so this measure is needed to be excluded from maize cultivation technology. The investigations were conducted in the MRI Zemun Polje, Belgrade during 2009-2018. Field trial was established with the aim to examine how different cropping systems influence maize weed infestation and productivity. Treatments with maize continuous cropping and herbicides application (isoxaflutole + metolachlor, 750 + 960 g a.i.) as well as untreated control were examined. Pre-emergence were applied. Maize hybrid ZP 606 was sown with density of 59.500 plants ha-1 . The level of complete weed and Johnsongrass infestation was evaluated 4-5 weeks after herbicide application by measuring fresh biomass per square meter. The fresh biomass of weeds was highly dependent on agro-ecological conditions of the year, herbicide application and their interaction. In average for all ten years, total fresh biomass of weeds was 2614.00 g m-2 in the control and Johnsongrass participated by 37.91%, while on the treated plot total fresh biomass of weeds was 543.00 g m-2 and Johnsongrass participated by 45.05%, which implicates that herbicides could not be the only measure for Johnsongrass control. Herbicide application, in average, reduced Johnsongrass fresh biomass by 75.31% even though fresh biomass of Jonsongrass has increased trough years. Maize continuous cropping should be replaced by rotation in order to prevent Johnsongrass prevalence and conduct weed control by lower usage of herbicides.sr
dc.language.isosrsr
dc.language.isoensr
dc.publisherBeograd : Univerzitet u Beogradu, Poljoprivredni fakultetsr
dc.rightsopenAccesssr
dc.rights.urihttps://creativecommons.org/licenses/by/4.0/
dc.source9. Simpozijum sa međunarodnim učešćem "Inovacije u ratarskoj i povrtarskoj proizvodnji", Beograd, 17-18.10.2019. - Zbornik izvodasr
dc.subjectSorghum halepensesr
dc.subjectkukuruzsr
dc.subjectmonokulturasr
dc.subjectzakorovljenostsr
dc.subjectSorghum halepensesr
dc.subjectmaizesr
dc.subjectcontinuous croppingsr
dc.subjectweed infestationsr
dc.titleGajenje kukuruza u monokulturi povećava zakorovljenost divljim sirkom (Sorghum halepense (L.) Pers.)sr
dc.titleMaize cultivation in continuous cropping supports Johnsongrass (Sorghum halepense (L.) Pers.) presencesr
dc.typeconferenceObjectsr
dc.rights.licenseBYsr
dc.citation.spage72
dc.citation.epage73
dc.identifier.fulltexthttp://rik.mrizp.rs/bitstream/id/4869/10.2019.pdf
dc.identifier.rcubhttps://hdl.handle.net/21.15107/rcub_rik_1010
dc.type.versionpublishedVersionsr


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