TY  - JOUR
AU  - Boroja, Mitar
AU  - Urošević, Mirko
AU  - Komnenić, Vaso
AU  - Živković, Milovan
PY  - 2005
UR  - http://aspace.agrif.bg.ac.rs/handle/123456789/1048
AB  - In this paper is given the suggestion that one plant parts of plant or more plants should be lighted with light from light cable from light source, light would be brought by light cable and only certain parts of plant should be lighted in this way of lightening growing plants weed plants could not have enough quantities of light for their survival and normal development, so they could not be significant endonger for growing plants.
AB  - Odavno se u rasadnicima, naročito ranog cveća i povrća, koristilo veštačko osvetljenje i zagrevanje tla. U svakom slučaju da je neophodno osvetljenje prilagoditi što je moguće bliže sunčevoj svetlosti, određene jačine i odgovarajućeg spektra. U radu je dat predlog da se osvetle pojedine biljke delovi biljke ili više biljaka sa svetlošću iz svetlovoda. Znači, od svetlosnog izvora bi se svetlost do biljaka dovodila svetlovodom i na biljci osvetljavala samo određena mesta. Na ovaj način osvetljavanja kulturnih biljaka, korovske biljke ne bi mogle imati dovoljne količine svetlosti za svoj opstanak i normalan razvitak te ne bi mogle u znatnoj meri da ugrožavaju kulturne biljke.
PB  - Institut PKB Agroekonomik, Padinska skela
T2  - Zbornik naučnih radova Instituta PKB Agroekonomik
T1  - Weed control lightening the green house with light cables
T1  - Suzbijanje korova osvetljenjem plastenika svetlovodima
EP  - 170
IS  - 1-2
SP  - 167
VL  - 11
UR  - https://hdl.handle.net/21.15107/rcub_agrospace_1048
ER  - 

@article{
author = "Boroja, Mitar and Urošević, Mirko and Komnenić, Vaso and Živković, Milovan",
year = "2005",
abstract = "In this paper is given the suggestion that one plant parts of plant or more plants should be lighted with light from light cable from light source, light would be brought by light cable and only certain parts of plant should be lighted in this way of lightening growing plants weed plants could not have enough quantities of light for their survival and normal development, so they could not be significant endonger for growing plants., Odavno se u rasadnicima, naročito ranog cveća i povrća, koristilo veštačko osvetljenje i zagrevanje tla. U svakom slučaju da je neophodno osvetljenje prilagoditi što je moguće bliže sunčevoj svetlosti, određene jačine i odgovarajućeg spektra. U radu je dat predlog da se osvetle pojedine biljke delovi biljke ili više biljaka sa svetlošću iz svetlovoda. Znači, od svetlosnog izvora bi se svetlost do biljaka dovodila svetlovodom i na biljci osvetljavala samo određena mesta. Na ovaj način osvetljavanja kulturnih biljaka, korovske biljke ne bi mogle imati dovoljne količine svetlosti za svoj opstanak i normalan razvitak te ne bi mogle u znatnoj meri da ugrožavaju kulturne biljke.",
publisher = "Institut PKB Agroekonomik, Padinska skela",
journal = "Zbornik naučnih radova Instituta PKB Agroekonomik",
title = "Weed control lightening the green house with light cables, Suzbijanje korova osvetljenjem plastenika svetlovodima",
pages = "170-167",
number = "1-2",
volume = "11",
url = "https://hdl.handle.net/21.15107/rcub_agrospace_1048"
}

Boroja, M., Urošević, M., Komnenić, V.,& Živković, M.. (2005). Weed control lightening the green house with light cables. in Zbornik naučnih radova Instituta PKB Agroekonomik
Institut PKB Agroekonomik, Padinska skela., 11(1-2), 167-170.
https://hdl.handle.net/21.15107/rcub_agrospace_1048

Boroja M, Urošević M, Komnenić V, Živković M. Weed control lightening the green house with light cables. in Zbornik naučnih radova Instituta PKB Agroekonomik. 2005;11(1-2):167-170.
https://hdl.handle.net/21.15107/rcub_agrospace_1048 .

Boroja, Mitar, Urošević, Mirko, Komnenić, Vaso, Živković, Milovan, "Weed control lightening the green house with light cables" in Zbornik naučnih radova Instituta PKB Agroekonomik, 11, no. 1-2 (2005):167-170,
https://hdl.handle.net/21.15107/rcub_agrospace_1048 .

TY  - JOUR
AU  - Boroja, Mitar
AU  - Urošević, Mirko
AU  - Živković, Milovan
AU  - Komnenić, Vaso
PY  - 2005
UR  - http://aspace.agrif.bg.ac.rs/handle/123456789/896
AB  - In both controlled spaces and plastic greenhouses it is essential to maintain the optimum conditions for undisturbed development of growing plants. Energy of the sun radiation reaching plastic greenhouses changes considerably in the course of the day. This energy is basically smaller than potential radiation energy because of: ionization and absorption of gas in atmosphere appearance of clouds and atmosphere pollution, changes in air density caused by atmosphere pressure, changes in angle of light rays fall on transparent part of plastic greenhouse and so on. All these changes bring about substantial variations on climate conditions in plastic greenhouses and cause negative conditions for plants development. Thereby it is very important to regulate automatically the energy entering into and emitting out of plastic greenhouses. One way of automatic or manual regulation of both entering and emitting energy is the transmission through Polaroid foils. Here are considered two possibilities of entering solar energy regulation into plastic greenhouse as well as prevention of energy emission out of plastic greenhouses. The first possibility is by Polaroid foils, and the second one is by liquid crystals. The quantity of transmitted energy into plastic greenhouse depend on Polaroid foils position in the first case and on potential (voltage) discrepancy in the second case.
AB  - U kontrolisanim prostorima kao i u plastenicima je veoma bitno održavati optimalne uslove za nesmetani razvoj gajenih biljaka. Energija zračenja Sunca koja dopire do plastenika znatno se menja u toku dana. Ona je znatno manja od potencijalne energije zračenja zbog jonizacije i apsorpcije gasova u atmosferi, te pojave oblaka i zagađenosti u atmosferi, zatim promene gustine vazduha zbog delovanja atmosferskog pritiska, promene ugla padanja svetlosnih zraka na prozirni deo plastenika i td. Sve ove promene uslovljavaju znatna variranja klimatskih uslove u plastenicima čime se stvaraju nepovoljni uslovi za razvoj biljke. Zbog toga je veoma važno da se ulazna i emitovana energija iz plastenika automatski reguliše. Jedan od načina automatske ili ručne regulacije kako dozračne, tako i emitovane energije je transmisija energije kroz polaroidne folije. Razmatrane su dve mogućnosti regulacije ulazne solarne energije u plastenik, kao i sprečavanje isijavanja energije iz plastenika. Prvi način je pomoću polaroidnih folija a drugi način je pomoću tečnih kristala. Količina transmitovane energije u plastenik kao i količina isijane energije iz plastenika zavisila bi od položaja polaroid folija u prvom slučaju, a od razlike potencijala (napona) u drugom slučaju.
PB  - Univerzitet u Beogradu - Poljoprivredni fakultet - Institut za poljoprivrednu tehniku, Beograd
T2  - Poljoprivredna tehnika
T1  - Regulation of energy entering into and emitting out of plastic greenhouse
T1  - Regulacija ulazne i emitovane energije iz plastenika
EP  - 77
IS  - 4
SP  - 73
VL  - 30
UR  - https://hdl.handle.net/21.15107/rcub_agrospace_896
ER  - 

@article{
author = "Boroja, Mitar and Urošević, Mirko and Živković, Milovan and Komnenić, Vaso",
year = "2005",
abstract = "In both controlled spaces and plastic greenhouses it is essential to maintain the optimum conditions for undisturbed development of growing plants. Energy of the sun radiation reaching plastic greenhouses changes considerably in the course of the day. This energy is basically smaller than potential radiation energy because of: ionization and absorption of gas in atmosphere appearance of clouds and atmosphere pollution, changes in air density caused by atmosphere pressure, changes in angle of light rays fall on transparent part of plastic greenhouse and so on. All these changes bring about substantial variations on climate conditions in plastic greenhouses and cause negative conditions for plants development. Thereby it is very important to regulate automatically the energy entering into and emitting out of plastic greenhouses. One way of automatic or manual regulation of both entering and emitting energy is the transmission through Polaroid foils. Here are considered two possibilities of entering solar energy regulation into plastic greenhouse as well as prevention of energy emission out of plastic greenhouses. The first possibility is by Polaroid foils, and the second one is by liquid crystals. The quantity of transmitted energy into plastic greenhouse depend on Polaroid foils position in the first case and on potential (voltage) discrepancy in the second case., U kontrolisanim prostorima kao i u plastenicima je veoma bitno održavati optimalne uslove za nesmetani razvoj gajenih biljaka. Energija zračenja Sunca koja dopire do plastenika znatno se menja u toku dana. Ona je znatno manja od potencijalne energije zračenja zbog jonizacije i apsorpcije gasova u atmosferi, te pojave oblaka i zagađenosti u atmosferi, zatim promene gustine vazduha zbog delovanja atmosferskog pritiska, promene ugla padanja svetlosnih zraka na prozirni deo plastenika i td. Sve ove promene uslovljavaju znatna variranja klimatskih uslove u plastenicima čime se stvaraju nepovoljni uslovi za razvoj biljke. Zbog toga je veoma važno da se ulazna i emitovana energija iz plastenika automatski reguliše. Jedan od načina automatske ili ručne regulacije kako dozračne, tako i emitovane energije je transmisija energije kroz polaroidne folije. Razmatrane su dve mogućnosti regulacije ulazne solarne energije u plastenik, kao i sprečavanje isijavanja energije iz plastenika. Prvi način je pomoću polaroidnih folija a drugi način je pomoću tečnih kristala. Količina transmitovane energije u plastenik kao i količina isijane energije iz plastenika zavisila bi od položaja polaroid folija u prvom slučaju, a od razlike potencijala (napona) u drugom slučaju.",
publisher = "Univerzitet u Beogradu - Poljoprivredni fakultet - Institut za poljoprivrednu tehniku, Beograd",
journal = "Poljoprivredna tehnika",
title = "Regulation of energy entering into and emitting out of plastic greenhouse, Regulacija ulazne i emitovane energije iz plastenika",
pages = "77-73",
number = "4",
volume = "30",
url = "https://hdl.handle.net/21.15107/rcub_agrospace_896"
}

Boroja, M., Urošević, M., Živković, M.,& Komnenić, V.. (2005). Regulation of energy entering into and emitting out of plastic greenhouse. in Poljoprivredna tehnika
Univerzitet u Beogradu - Poljoprivredni fakultet - Institut za poljoprivrednu tehniku, Beograd., 30(4), 73-77.
https://hdl.handle.net/21.15107/rcub_agrospace_896

Boroja M, Urošević M, Živković M, Komnenić V. Regulation of energy entering into and emitting out of plastic greenhouse. in Poljoprivredna tehnika. 2005;30(4):73-77.
https://hdl.handle.net/21.15107/rcub_agrospace_896 .

Boroja, Mitar, Urošević, Mirko, Živković, Milovan, Komnenić, Vaso, "Regulation of energy entering into and emitting out of plastic greenhouse" in Poljoprivredna tehnika, 30, no. 4 (2005):73-77,
https://hdl.handle.net/21.15107/rcub_agrospace_896 .