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Now showing items 21-30 of 235
Air temperature and humidity variations in the tied cows house by different roof cooling fans working regimes / Promene temperature i vlažnosti vazduha u objektu za vezano držanje krava pri višestepenom režimu rada krovnih ventilatora
(Univerzitet u Beogradu - Poljoprivredni fakultet - Institut za poljoprivrednu tehniku, Beograd, 2009)
Analysis of roof cooling fans function in several working regimes is presented. The main goal of the research was to define the influence of fan working regime on inside air temperature and velocity. Those two are the main ...
Defining of parameters for economical efficiency estimation of family dairy farms / Utvrđivanje parametara za ocenu ekonomske efikasnosti porodičnih farmi muznih krava
(Univerzitet u Beogradu - Poljoprivredni fakultet - Institut za poljoprivrednu tehniku, Beograd, 2009)
Analysis of all significant parameters for the study of economical efficiency of investments in family farms is presented in this paper. The research included small family dairy farms of 50 dairy cows with the younger ...
The effect of tillage system, nitrogen level and cultivars on grain yield of winter wheat / Uticaj sistema obrade zemljišta, dopunske ishrane azotom i sorte na prinos ozime pšenice
(Univerzitet u Beogradu - Poljoprivredni fakultet - Institut za poljoprivrednu tehniku, Beograd, 2009)
This paper deals with result of the effects of low-input technology on grain yield of different winter wheat cultivars in investigated period (2003/04-2004/05) on the chernozem luvic soil type in Faculty of Agriculture ...
Energy efficiency of protected crop production of peppers regarding different types of polyethylen films / Energetska efikasnost proizvodnje paprike u zaštićenom prostoru u funkciji primene različitih tipova polietilenskih (PE) folija
(Univerzitet u Beogradu - Poljoprivredni fakultet - Institut za poljoprivrednu tehniku, Beograd, 2010)
Using of different types of modern PE films has afforded several benefits in climate control inside of greenhouse: intensity and spectral characteristics of sunlight, air temperature and humidity, soil temperature and soil ...
Effects of using ameliorative tillage system on soils of heavy mechanical composition in field crops production / Efekti primene sistema meliorativne obrade na zemljišta teškog mehaničkog sastava u proizvodnji ratarskih kultura
(Univerzitet u Beogradu - Poljoprivredni fakultet - Institut za poljoprivrednu tehniku, Beograd, 2010)
In this paper influence of two tillage systems for soils of heavy mechanical composition (conventional with bottom plough and ameliorative tillage system) is analyzed. The emphasis of research, in addition to other secondary ...
Procedures for the preparation of pruning remains in orchards / Postupci pripreme ostataka rezidbe iz višegodišnjih zasada
(Univerzitet u Beogradu - Poljoprivredni fakultet - Institut za poljoprivrednu tehniku, Beograd, 2008)
Previous investigations have proved the fact that Serbia has a substantial renewable energy potential amounting to more than 3 million tons petrol equivalents annually. The share of biomass accounts for approx. 80% of the ...
Factor influencing irrigation on slopes / Uticajni faktori navodnjavanja kišenjem na nagibima
(Univerzitet u Beogradu - Poljoprivredni fakultet - Institut za poljoprivrednu tehniku, Beograd, 2007)
Intensive plant production can not be imagined without irrigation. Support to this fact is that 18% of the total arable land in the world is irrigated, and the agricultural production from this area is equal to the total ...
Estimation of mixer distribution trailer function quality JF-Stoll in preparation of TMR feed mixture for dairy cows / Ocena kvaliteta rada mikser distributer prikolice JF-Stoll u pripremi TMR obroka za muzne krave
(Univerzitet u Beogradu - Poljoprivredni fakultet - Institut za poljoprivrednu tehniku, Beograd, 2009)
Quality of TMR feed homogenization and distribution is analyzed in this paper. TMR feed mixture for lactating cows feeding was prepared in vertical mixer distribution trailer JF- Stoll VM 8 1S. The mixture was consisted ...
Subsequently effect of ameliorative tillage on some physical soil properties in winter wheat / Produžno dejstvo meliorativne obrade na fizičke osobine zemljišta u usevu ozime pšenice
(Univerzitet u Beogradu - Poljoprivredni fakultet - Institut za poljoprivrednu tehniku, Beograd, 2010)
The paper deals with the subsequently effect of ameliorative tillage on the dynamics of some important physical soil properties in winter wheat. The trial was carried-out at the experimental fields of Maize Research Institute ...
A chaotic fixed investment rate growth model in the combine production / Haotični model rasta stope fiksnih investicija u proizvodnji kombajna
(Univerzitet u Beogradu - Poljoprivredni fakultet - Institut za poljoprivrednu tehniku, Beograd, 2010)
Chaos theory, as a set of ideas, attempts to reveal structure in aperiodic, unpredictable dynamic systems. Chaos embodies three important principles: (i) extreme sensitivity to initial conditions; (ii) cause and effect are ...