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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
Editor: Roumyana Vassileva
E-mail: bjas_sb@abv.bg
Web: http://www.agrojournal.org; http://journal.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 2 April 2019

AGRICULTURAL ECONOMICS AND MANAGEMENT

The hidden drivers of the legislation of the Common Agricultural Policy – the case of the 2013 CAP reform

Imre Fertő, Attila Kovács


Average labor productivity of urea producing firms in the GCC

Mohammed Al-Mahish


AGROCHEMISTRY AND SOIL SCIENCE


Evolution of the exchange properties of a K-beidellite submitted to alternate wetting and drying cycles

Hachemi Zaidi, Abdellah Bakhti, Mohamed Larid


AGRICULTURAL ENGINEERING

Effect of threshing machines, rotational speed and grain moisture on corn shelling

Salih K. Alwan Al Sharifi, Mousa A. Aljibouri, Manhil Abass Taher


Research and formation of qualitative hydro air ion composition in agricultural premises

Serhii Sukach, Tatyana Kozlovskaya, Ihor Serhiienko, Valentyn Glyva, Oleksandr Vovna, Ivan Laktionov


AGRICULTURAL TECHNOLOGIES

The utilization of fruit and vegetable wastes for bioethanol production with the inoculation of indigenous yeasts consortium

Gemilang Lara Utama, Febrin E. E. Sidabutar, Hanna Felina, Dwi Wahyudha Wira, Roostita Lobo Balia


Effect of temperature, relative humidity and moisture on aflatoxin contamination of stored maize kernels

Francis Collins Muga, Moses Okoth Marenya, Tilahun Seyoum Workneh


PLANT SCIENCE

Study on the influence of Lumbrical and Lumbrex bio-fertilizers over an artificial grassland of red fescue ( Festuca rubra L.)

Tatyana Bozhanska


Seed germination of beans ( Phaseolus vulgaris) with nano-particles of iron

Judith Prieto-Méndez, Eliazar Aquino-Torres, Sergio Rubén Pérez-Ríos, Nallely Trejo-González, Francisco Prieto-García


Variability, heritability and genetic advance of some grain quality traits and grain yield in durum wheat genotypes

Krasimira Taneva, Violeta Bozhanova, Ivanka Petrova

Changes of structural characteristic of leaves in wheat varieties under the influence of experimentally contaminated water

Katya N. Velichkova


Application of in vitro test system for evaluating the tolerance of Ageratum houstonianum and Petunia x hybrida to cadmium toxicity

Denitza I. Milusheva, Bistra Y. Atanassova, Elena T. Iakimova - Denitza I. Milusheva, Bistra Y. Atanassova, Elena T. Iakimova


Influence of meteorological conditions on the production of nectar and pollen of Cucurbita pepo var. giromontia

Tsvetelina Nikolova, Milena Yordanova, Vera Petrova


Ability of Limnocharis flava to escape from episodic submersion by rapid elongation of its leaf petiole

Benyamin Lakitan, Fira Juliani, Erizal Sodikin


Use of Scleria poaeformis as biomaterial in etno-agricultural practice at riparian wetlands in Indonesia

Benyamin Lakitan, Erna Siaga, Kartika Kartika, Y. Yunindyawati


Floating seedbed for preparing rice seedlings under unpredictable flooding occurrence at tropical riparian wetland

Erna Siaga, Benyamin Lakitan, Hasbi Hasbi, Siti M. Bernas, Laily I. Widuri, Kartika Kartika


Cultivation of agricultural crops with irrigation in Amur region

Marina V. Makannikova, Lyudmila A. Lapshakova, Natalya V. Belmach


PLANT PROTECTION

Managing the scab on apple leaves by combining some treatment programs with application periods

Edmond Rexhepi, Harallamb Paçe, Hekuran Vrapi, Arbenita Hasani, Shpend Shahini


ANIMAL SCIENCE

Animal hygienic assessment of air carbon dioxide concentration in semi-open freestall barns for dairy cows

Dimo Dimov, Ivaylo Marinov, Toncho Penev, Chonka Miteva, Zhivka Gergovska


First lactation milk production of cows of the Simmental breed reared in Bulgaria

Svetoslav Karamfilov, Vasil Nikolov


Variability in rumen degradability and intestinal digestibility of sunflower meals protein

Krum V. Nedelkov, Alexander N. Hristov, Nikolai A. Todorov


ANIMAL GENETICS

Polymorphisms of CAPN1, CAST, GDF5, TG5 and GH genes in Russian Hereford cattle

Kinispay Dzhulamanov, Nikolay Gerasimov, Marina Dubovskova, Asemgul Baktygalieva


Breeding efficiency and related traits in buffalo cows under the conditions of Nature Park “Rusenski Lom”

Yordanka Ilieva, Pencho Penchev


FISHERIES AND AQUACULTURE

Functional classification of phytoplankton in Kardzhali reservoir (Southeast Bulgaria)

Kostadin Dochin, Ivan Iliev


VETERINARY MEDICINE

The analysis of damping of the Bovine Rhinotracheitis National Recovery Program in the Czech Republic between 2006-2016

Richard Pospisil, Ondrej Krocil, Philipp Kunz


Biological and economic aspects of immunological castration in the comparison with traditional (surgical) method

Mykola Povod, Inna Lozynska, Evgeniya Samokhina


FOOD SCIENCE AND TECHNOLOGIES

Characteristics and antimicrobial activity of sugar dangke whey fermentation

Fatma Maruddin, Ratmawati Malaka, Muhammad Taufik


Effect of ethanol used in a degreasing process on Bali cattle bones on the physicochemical properties of extracted collagen

Muhammad Irfan Said, Effendi Abustam, Abd.Wahid Wahab, Paulina Taba, Asdar Gani, Abd. Malik Wahid


The development of organic sliceable black table olive products in sausage-like form from physicochemical, microbiological and organoleptic characteristics

Yasin Ozdemir, Mehmet Ozkan, Aysun Ozturk, Ugur Ozyurt, Rena I. Kosti