30
SEP
2021

Study on the effectiveness of chemical and biological agents to control tomato leaf miner (Tuta absoluta Meyrick, 1917)

R. Mineva1*, V. Yankova2, N. Valchev1 1Department of Plant Production, Faculty of Agriculture, Trakia University, 6000 Stara Zagora, Bulgaria 2Maritsa Vegetable Crops Research Institute, 32 Brezovsko shose Str., 4003 Plovdiv, Bulgaria (Manuscript received 1 June 2021; accepted for pub
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30
SEP
2021

Design parameters of furrow forming and compacting roller of the combined seeder STS-80

G. Hristova1*, M. Dallev2, G. Tihanov1 1Department of Agricultural Engineering, Faculty of Agriculture, Trakia University, 6000 Stara Zagora, Bulgaria 2Department of Agricultural machinery, Faculty of horticulture with viticulture, Agricultural University of Plovdiv, 12 Mendeleev Blvd
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28
JUN
2021

Estimation of the economic efficiency of Lacaune sheep farms, based on theoretical bio-economic models

S. Slavova* Agricultural Institute, 6000 Stara Zagora, Bulgaria (Manuscript received 24 November 2020; accepted for publication 26 April 2021) Abstract. The aim of the present study was to develop theoretical bio-economic models of Lacaune sheep farms and establish their economic effi
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28
JUN
2021

Effect of irrigation rate on Sudan grass yield, grown as a second crop

R. Bazitov* Agricultural Institute, 6000 Stara Zagora, Bulgaria (Manuscript received 24 October 2020; accepted for publication 12 May 2021) Abstract. The aim of the present study was to establish the effect of irrigation rate on the yield of Sudan grass variety Engje-1, grown as a sec
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28
JUN
2021

Simulated acid rain impact on growth, yield and leaf anatomy of Dioscorea rotundata (L.)

E.P. Edosa*, J.F. Bamidele Department of Plant Biology and Biotechnology, Faculty of Life Science, University of Benin, P.M.B. 1154, Benin City, Edo State, Nigeria (Manuscript received 23 September 2020; accepted for publication 26 March 2021) Abstract. Acid rain causes damage to crop
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30
MAR
2021

Assessment of morphological variations in wild populations of Nile tilapia from South West Nigeria

O.M. Popoola*, A. Ebiwonjumi Department of Fisheries and Aquaculture, Federal University of Technology, Akure, Nigeria (Manuscript received 31 October 2020; accepted for publication 20 February 2021) Abstract. The pattern of morphological variations among Oreochromis niloticus (Linnae
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30
MAR
2021

Physiological responses of Vicia faba to copper toxicity

S. Benouis1,2*, H.A. Reguieg Yssaad1, E.H. Bouziani1, I. Khedim1 1Laboratory of Biodiversity and Conservation of Water and Soils, Faculty of Nature and Life Sciences, University of Abdelhamid Ibn Badis, Mostaganem, Algeria 2Scientific and Technical Research Center on Arid Regions (CRS
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30
MAR
2021

Productivity and feed quality of Sudan grass (Sorghum sudanense (Piper) Stapf.) and sweet sorghum forms

S. Enchev* Agricultural Institute, 3 Simeon Veliki, 9700 Shumen, Bulgaria (Manuscript received 24 August 2020; accepted for publication 22 February 2021) Abstract. During the period 2017-2018, the feed quality and productivity of three Sudan grass varieties – Endje 1, Vercors and Supe
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30
MAR
2021

Influence of long-term fertilization and environments on test weight of durum wheat (Triticum durum Desf.) grain

G. Panayotova1*, S. Kostadinova2, S. Stefanova-Dobreva3, A. Muhova3 1Department of Plant production, Faculty of Agriculture, Trakia University, 6000 Stara Zagora, Bulgaria 2Department of Agrochemistry and Soil Science, Faculty of Agronomy, Agricutural University, 4000 Plovdiv, Bulgari
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29
DEC
2020

Vulnerability of sweet cherry cultivars to continuous periods of spring frosts in Plovdiv, Bulgaria

S. Malchev, S. Savchovska* Fruit Growing Institute – Plovdiv, 12 Ostromila Str., 4004 Plovdiv, Bulgaria (Manuscript received 31 August 2020; accepted for publication 16 October 2020) Abstract. The periods with continuous freezing air temperatures reported during the spring of 2020 (13
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