Претраживање
Приказ резултата 71-80 од 98
Acute and subacute toxicity of atrazine to carp (Cyprinus carpio L.)
(Ecotoxicology and Environmental Safety, 1993)
Investigations of acute and subacute atrazine toxicity in carp (Cyprinus carpio L.) were carried out. Acute toxicity was investigated in a semi-static test during a 96-hr exposition. The estimated LC-50 value was 18.8 mg/l. ...
Current state and perspectives of fresh water fishery in Serbia / Stanje i perspektive razvoja slatkovodnog ribarstva u Srbiji
(Naučno društvo agrarnih ekonomista Balkana, Beograd, Institut za ekonomiku poljoprivrede, Beograd i Akademija ekonomskih nauka, Bukurešt, 1994)
The observed misbalance between fisheries production and consumption in Serbia, has caused rapidly increasing prices. Production growth in lowland carp ponds, will be the most adequate, because there is no sufficient natural ...
Macroeconomic reforms in Eastern and Central Europe impact on agriculture / Makroekonomske reforme u Istočnoj i Centralnoj Evropi - njihov uticaj na poljoprivredu
(Naučno društvo agrarnih ekonomista Balkana, Beograd, Institut za ekonomiku poljoprivrede, Beograd i Akademija ekonomskih nauka, Bukurešt, 1994)
Economic and political reforms in Eastern and Central Europe have caused very high social costs of transition. Social tensions have been increased owing to the slackened reforms in agricultural sector. The experience of ...
Sugarcane mosaic virus - An important pathogen on maize in Yugoslavia
(Zeitschrift fur Pflanzenkrankheiten und Pflanzenschutz, 1995)
Effects of liming and the application of various phosphorous fertilizers on potato yield in pseudoglay type soil in the dragačevo region
(Acta Horticulturae, 1997)
During the period between 1993 and 1995, an investigation of the fertilizing effect on the potato yield was conducted on the extremely acidulous pseudoglay (pH in KC1 3.25) in Guča. NJIVAL was applied as a lime source in ...
Effect of organic mulch application on the yield of potato seed crop
(Acta Horticulturae, 1997)
A two-year experiment (1994-1995) to evaluate the effect of organic mulch application on the yield height and structure of potato seed crop (Solarium tuberosum L. cv. Desireé: elite origin Holland) was conducted at Kucay ...
Occurrence of bacterial wilt and soft rot of seed cabbage plants (Brassica oleracea var capitata L) in Yugoslavia
(Blackwell Wissenschafts-Verlag Gmbh, Berlin, 1996)
Soft rot and wilt symptoms were noticed on 2-year-old seed cabbage plants grown in field crops. Soft rot Erwinia was isolated from the diseased tissues. Pathogenicity tests showed that the bacterium effectively colonised ...
Effects of excessive levels of sodium selenite on daily weight gain, mortality and plasma selenium concentration in chickens
(Univerzitet u Beogradu - Fakultet veterinarske medicine, Beograd, 1999)
One hundred and five, one day old unsexed Hybro chickens divided into 7 groups, were fed basal diets supplemented with 0, 2, 5, 10, 20 and 30 mg Se/kg as sodium selenite for 6 weeks. The Se level of 2 mg/kg feed had no ...
Production methods of the investigations on the development of the agricultural machinery / Istraživanje uticaja načina privređivanja na pravce razvoja poljoprivredne tehnike
(Naučno društvo agrarnih ekonomista Balkana, Beograd, Institut za ekonomiku poljoprivrede, Beograd i Akademija ekonomskih nauka, Bukurešt, 1994)
Current development is focused on food and energy production along with numerous consequences. The objective of agriculture and agricultural machinery has been to increase yield per unit of area and the production of the ...
Fire blight of pear in Yugoslavia
(Acta Horticulturae, 1998)
Fire blight of pear, caused by Erwinia amylovora (Burr.) Winslow, et al., is one of the oldest and the most destructive disease caused by bacteria on pome fruits. This disease is most dangerous on pear (Pyrus sp.), making ...