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Maize Weed infestation under intensive cropping practices
(National Centre for Agrarian Science, Sofia, Bulgaria, 2006)
Weediness are the permanent problem in the maize production and the herbicide application is a usual way for their control. After many years of such a technology, it is obvious that herbicide weed control in maize fields ...
The yield grain of winter wheat and maize in continuous cropping, two- and three-crop rotation / Prinos zrna ozime pšenice i kukuruza u monokulturi, dvopoljnom i tropoljnom plodoredu
(Savez poljoprivrednih inženjera i tehničara, Beograd, 2006)
Due to the absolute dominance of maize in a sowing structure of the arable areas, maize continuous cropping is still very frequent. It is followed by a two-crop rotation (winter wheat-maize), and then by a very favorable, ...
Presence and distribution of tobacco viruses in Serbia / Prisustvo i rasprostranjenost virusa duvana u Srbiji
(Institut za pesticide i zaštitu životne sredine, Beograd i Društvo za zaštitu bilja Srbije, Beograd, 2006)
Infection with a large number of plant viruses could imperil tobacco yield and quality. Tobacco is a natural host for more than 20 viruses, among which the most important and economically harmful are tobacco mosaic virus ...
Effect of constructive solutions for sprayers on the quality of drift control and its decrease / Uticaj konstruktivnih rešenja orošivača na kvalitet zaštite i smanjenje drifta
(Univerzitet u Beogradu - Poljoprivredni fakultet - Institut za poljoprivrednu tehniku, Beograd, 2006)
In Serbia classical sprayers with axial low-spray ventilators are still used in pest and disease control in fruit growing. These sprayers are characterized by huge amounts of air discharged into uncontrollable directions. ...
Thermal stability of aqueous polyurethanes depending on the applied catalysts
(MDPI, BASEL, 2006)
The thermal stability of aqueous polyurethanes has been measured applying the thermogravimetric analysis. The aqueous polyurethanes (aqPUR) with catalysts of different selectivity have been studied by use of the dynamic ...
Investigations of hydrodynamic permeability ceramic membranes for microfiltration / Ispitivanje hidrodinamičke propustljivosti keramičkih mikrofiltracionih membrana
(Univerzitet u Beogradu - Poljoprivredni fakultet, Beograd, 2006)
This paper introduces the results of experimental investigations on the influence of operating parameters, such as feed flow rate, temperature, pressure difference in the microfiltration through the ceramic Kerasep membrane. ...
New concepts of plant nutrition in production of the planting material: Hazelnut planting material production / Novi koncepti ishrane biljaka u proizvodnji sadnog materijala - proizvodnja sadnica leske
(Naučno voćarsko društvo Srbije, Čačak, 2006)
The paper presents the results of an experiment that involved evaluation of the effects of application of new types of fertilizers and employment of new ways of fertilization in the production of hazelnut planting material. ...
The effect of pruning on length of the fruiting branches and formation of inflorescence, glomerula and the vegetative buds in major hazelnut cultivars / Uticaj rezidbe na dužinu rodnih grančica i formiranje resa, glomerula i vegetativnih pupoljaka važnijih sorti leske
(Naučno voćarsko društvo Srbije, Čačak, 2006)
The effect of pruning on length of the fruiting branches, distribution of male and female florescence as well as yield of three hazelnut cultivars (Istrian long, Roman and Tonda Gentile delle Langhe) have been studied. The ...
Spectroscopic characteristics of highly selective manganese catalysis in acqueous polyurethane systems
(MDPI, BASEL, 2006)
The latest investigations on producing more efficient catalytic aqueous polyurethane systems are in the domain of metal complexes with mixed ligands. In our previous research works, the high selectivity for the isocyanate-hydroxyl ...
Number and activity of microorganisms in bauxite mine soil / Brojnost i aktivnost mikroorganizama u zemljištima rudnika boksita
(Unija bioloških naučnih društava Jugoslavije, Beograd, 2006)
Mine exploitation often produce heavy divested soils without any vegetation and biological potential. However, the most mine soils contents heavy metals too. In this study first we were investigate the metal contents in ...