28
JUN
2021

Optimizing the thickness of a straw outer wall of a building for sows in a view to achieving cost-effective heat insulation

V. Dimova*, D. Georgiev Department of Agricultural Engineering, Faculty of Agriculture, Trakia University, 6000 Stara Zagora, Bulgaria (Manuscript received 22 November 2020; accepted for publication 16 April 2021) Abstract. The aim of the study is to determine the optimum thickness of
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28
JUN
2021

Effect of transport vehicles on the grain harvester idle time during harvesting

G. Tihanov* Department of Agricultural Engineering, Faculty of Agriculture, Trakia University, 6000 Stara Zagora, Bulgaria (Manuscript received 12 December 2020; accepted for publication 2 April 2021) Abstract. The article studied the effect of transport vehicles on the grain harveste
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30
MAR
2021

Length-weight relationship of European catfish (Silurus glanis L.) fry reared at different stocking densities under controlled conditions

V. Krasteva*, M. Yankova Institute of Fisheries and Aquaculture, 4003 Plovdiv, Bulgaria (Manuscript received 14 October 2020; accepted for publication 18 January 2021) Abstract. The present paper investigates the body length and weight, and the size-weight variations of one-month-old
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30
MAR
2021

Productivity and quality of experimental sunflower hybrids in climatically different years

M. Drumeva* Department of Plant Production, Faculty of Manufacturing Engineering and Technologies, Technical University of Varna, 1 Studentska str., 9010 Varna, Bulgaria (Manuscript received 5 September 2020; accepted for publication 16 January 2021) Abstract. The main purpose of sunf
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30
MAR
2021

Fuel consumption of a machine-tractor unit in direct sowing of wheat

G. Tihanov1*, N. Ivanov2 1Department of Agricultural Engineering, Faculty of Agriculture, Trakia University, 6000 Stara Zagora, Bulgaria 2Department of Plant production, Faculty of Agriculture, Trakia University, 6000 Stara Zagora, Bulgaria (Manuscript received 7 September 2020; accep
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29
DEC
2020

Evapotranspiration in Sudan grass second culture grown under non – irrigated and optimal irrigated conditions

R. Bazitov* Agricultural institute, 6000 Stara Zagora, Bulgaria (Manuscript received 24 August 2020; accepted for publication 19 October 2020) Abstract: The aim of the present study was to establish the evapotranspiration of Sudan grass variety Engje-1, grown as a second crop for sila
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29
DEC
2020

Operational characteristics of direct sowing machine-tractor unit

G. Tihanov* Department of Agricultural Engineering, Faculty of Agriculture, Trakia University, 6000 Stara Zagora, Bulgaria (Manuscript received 13 July 2020; accepted for publication 26 October 2020) Abstract. A study on some operational characteristics of a direct sowing machine-trac
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29
SEP
2020

Growth and yield of orange (Washington Navel 141) grafted on different citrus rootstocks

Alaa Suhiel Ibrahim* Research station of Ciano, Jableh, the agricultural scientific research center in Lattakia, General corps of scientific agricultural researches, Syria (Manuscript received 26 May 2020; accepted for publication 27 July 2020) Abstract. This investigation was conduct
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30
JUN
2020

Spectral analysis as an extra method to soil type discrimination

M. Todorova1*, S. Atanassova2, M. Georgiev1, L. Pleshkuza1 1Department of Crop production, Faculty of Agriculture, Trakia University, 6000 Stara Zagora, Bulgaria, 2Department of Biochemistry, Microbiology and Physics, Faculty of Agriculture, Trakia University, 6000 Stara Zagora, Bulga
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30
JUN
2020

Еconomic analysis of meat production from two types of Domestic quails

H. Lukanov1*, I. Pavlova2 1Department of Animal Science – monogastric and other animals, Faculty of Agriculture, Trakia University, 6000 Stara Zagora, Bulgaria 2Department of General livestock breeding, Faculty of Veterinary medicine, Trakia University, 6000 Stara Zagora, Bulgar
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