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Bulgarian Journal of Agricultural Science (BJAS) is a peer-reviewed, open access, online and print journal, issued bimonthly. It has been published in English since 1995. It publishes original research papers, review articles and brief communications from all areas of agricultural science including agricultural economics, agroecology, agrochemisty and soil science, crop science, plant protection, animal science, veterinary medicine, fisheries and aquaculture, agricultural engineering, food technologies and other related areas.

ISSN 0310-0351 - print
ISSN 2534-983X - online

Publisher: Agricultural Academy of Bulgaria
Editor-in-Chief: Prof. Maya Ignatova
Executive editor: Snezhana Besarabova
E-mail: bjas_sb@abv.bg
Web: www.agrojournal.org

Address:
Bulgarian Journal of Agricultural Science
125, Tzarigradsko shosse Blvd., Block 1
1113 Sofia, Bulgaria

Print preparation: Photonika - Ivo Nikov
Printing: Avangard Ltd.

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Volume 25 Number 4 August 2019

SUSTAINABLE AGRICULTURE

Assessment of sustainability of agro-ecosystems in Bulgaria

Hrabrin Bachev, Bodjidar Ivanov, Dessislava Toteva


Variability of traits and their correlation in different rice genotypes in dynamically changing climate conditions

Ruslan R. Dzhamirze, Nadezhda V. Ostapenko, Tatyana N. Lotochnikova, Natalya N. Chinchenko


Evaluation of oriental tobacco of the variety group of Basmi upon organic production

Hristo Bozukov, Maria Kasheva, Yovcho Kochev, Daniela Vitanova


Action of activated waters on plants after adverse chemical effects, imitating acid rain

Teodora P. Popova, Toshka E. Petrova, Metodi Petrichev, Miglena Valyova


A case study of woody leaf litter vermicompost as a promising calcium fertilizer

Ksenia Petrochenko, Alexander Kurovsky, Anna Godymchuk, Andrey Babenko, Yury Yakimov, Alexander Gusev


AGRICULTURAL MANAGEMENT

Traditional Bulgarian foods in the Horeca sector as a factor of choice for the tourist destination

Stanko Stankov, Hafize Fidan, Georgi Toskov, Eva Dimitrova, Kremena Nikovska


Professionalism in extensive sheep farming system in Central Greece

Maria D. Yiakoulaki, Nikolaos D. Hasanagas


Problems and prospects of food security in Ukraine

Natalia Vasylieva


Theoretical extension education modeling of citrus culture development in Iran citrus pole

Mohammad A. Ashkar-Ahangarkolaee, Malek Mohammadi, Seyed M. Hosseini


AGRICULTURAL ECONOMICS

Challenges of the red meat supply chain in Slovenia: the case of pig breeders

Aleš Kuhar, Hristo Hristov


A research on the characteristics and activities of producers in organic markets: a case study of Izmit and Sişli district

Mesude Ünal, Bahar Aydin Can


A determinant of marketing system choice by rubber smallholders in Indonesia

Mirza Antoni, Hiromi Tokuda


Sustainable city development

New solution – attractive lighting with fluorescent algae in aquariums, situated in multi-storey transparent elevators and in floor gardens inside skyscraperers

Yanko Aleksandrov


ECOLOGICAL FARMING

Investigation of the opportunities for introduction of the wild turkey (Meleagris gallopavo) in the territory of Bulgaria

Radoslav Mihaylov, Rosen Dimitrov, Kamelia Stamatova-Yovcheva, Fejzullah Fejzulla


Screening of arbuscular mycorrhiza isolated from rhizosphere of elephant grass from seven soil types for biofertilizer in zeolite pot culture

Vita Ratri Cahyani, Muhammad Ridho Alfin, Nabilah Hanifah


PLANT SCIENCE

Basic chemical components, smoking and taste qualities of tobacco varieties grown in different regions of Bulgaria

Maria Kasheva, Margarita Docheva, Yovcho Kochev


The optimization mesophyll protoplast isolation for Phalaenopsis amboinensis

Machmudi Machmudi, Hery Purnobasuki, Edy Setiti Wida Utami


PLANT PROTECTION

Tomato lines from interspecific hybridization – donors of resistance to leaf bacterial infections

Daniela Ganeva, Nevena Bogatzevska


PLANT GENETICS

Hybridization technique of black orchid (Coelogyne pandurata Lindley) to enrich the genetic diversity and to rescue the genetic extinction

Sri Hartati, Nandariyah, Ahmad Yunus, Djati Waluyo Djoar


ANIMAL SCIENCE

Study on the body conformation of breeding female cattle of the Rhodope Shorthorn Cattle breed

Radka Malinova, Vasil Nikolov


The economic potential of honeycomb from wild bees

Mochammad Junus


Applying iodine-containing preparations as growth promoters in Russia’s poultry farming

Eleonora Evgenievna Ostrikova, Natalia Andreevna Ostapenko, Alexander Sergeevich Chernyshkov, Natalia Vladimirovna Lenkova


ANIMAL GENETICS

Determining genotypes of 3-breed pig hybrids by marker genes and their interrelation with meat productivity

Alexandr Maximov, Vyacheslav Vasilenko, Gennadiy Maximov, Ivan Svinarev


AGROCHEMISTRY AND SOIL SCIENCE

Bulgarian soil classification issues of correlation and harmonization with the international soil classification systems

Toma Shishkov


FOOD SCIENCE AND TECHNOLOGIES

The effect of regional source of solid coconut sugar and additional concentration of activated carbon on the quality of pandanus-scented coconut sugar syrup

Arie Febrianto Mulyadi, Susinggih Wijana, Dwi Elsa Yunita


AGRICULTURAL ENGINEERING

Evaluation of suitability for mechanized harvesting of sesame genotypes, introduced in Portugal

Rui Nobre, Stanislav Stamatov, Manol Deshev, Stoyan Ishpekov