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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 1310-0351 - print
ISSN 2534-983X - online

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

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

Print preparation: Ivo Nikov
Printing:BPS Ltd

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Note to contributors

Volume 26 Number 4 August 2020


Status, potentials, constrains and strategies for development of sericulture farming system in West Bengal state of India (review)

Debjoy Bhattarcharjya, Khasru Alam, Anil Bhuimali and Soumen Saha

The modeling of effective factors on Qaenat saffron yield using GFA and ANFIS

Amir Dadras Moghaddam, Sadrollah Ramezani, Seyed Mehdi Hosseini, Ahmad Vandaki


Economic effect evaluation of rearing sheep of the Copper-red Shumen breed

Stanimira Slavova, Genoveva Staykova, Staika Laleva, Yovka Popova, Petya Slavova

Prediction of the number of domestic animals and birds in the conditions of the economic crisis

Andre Nepochatenko, Victor Nepochatenko, Uliana Revitska, Oksana Strigina, Olena Melnichenko and Vitaly Bomko


Аgricultural modules situated in arcology skyscrapers intended for production of certain oil crops, soft fruits and vegetables as well as honey

Yanko Aleksandrov

Effect of Bacillus subtilis 1 strain on the growth and development of wheat (Triticum aestivum L.) under saline condition

Dilfuza P. Jabborova, Abdujalil A. Narimanov, Yuriy I. Enakiev and Kakhramon D. Davranov


Boosting biochemical composition of stevia plant using biochar loaded with beneficial microorganism strains

Abdel Wahab M. Mahmoud, Asmaa Badr El-din Sayed El-Attar, Sanaa Esmail Ahmed Esmail and Hoda Sany

Application of Lumbrical and Lumbrex biofertilizers and their influence on the nutritional value and quality indicators in artificial grassland of bird’s-foot-trefoil (Lotus corniculatus L.)

Tatyana Bozhanska

Phosphate solubilizing microbes and coffee skin compost to in­crease Robusta coffee plant growth in Andisol of Mount Sinabung Area

Mariani Sembiring, T. Sabrina and Mukhlis


Biological activity of the novel plant growth regulators: N-alkoxycarbonylaminoethyl-N’-arylureas

Antonida V. Kalistratova, Leonid V. Kovalenko, Maxim S. Oshchepkov, Inna N. Solovieva, Anna G. Polivanova, Natalia A. Bystrova and Konstantin A. Kochetkov

The use of photoselective nets affects the leaf characteristics of lettuce cultivars

Renes Rossi Pinheiro, Marcos Vinícius Marques Pinheiro, Leonardo Antonio Thiesen, Maria Inês Diel, Jullie dos Santos, Braulio Otomar Caron and Denise Schmidt

The Influence of Sowing Time and Micro-fertilizers on Soybean Productivity in the Northern Steppe of Ukraine

Tamara Shepilova, Mykola Mostipan, Dmytro Petrenko and KaterynaVasylkovska

Effect of stimulant (ethephon) application and tapping frequency on latex production of rubber tree (Hevea brasiliensis Muell. Arg.)

Raden Budiasih, Mohamad Agus Salim, Ika Apriani, Sofiya Hasani and Muhammad Subandi

Influence of photosynthetic apparatus on the productivity of high-oleic sunflower depending on climatic conditions in the left-bank forest-steppe of Ukraine

Andrii Melnyk, Jones Akuaku, Tetiana Melnyk and Anton Makarchuk

The contribution of green plant parts to grain filling of durum wheat under water deficit

Ali Arous, Ahmed Adda, Moulay Belkhodja, Assia Bouzid and Othmane Merah


Molecular markers and their application in cotton breeding: progress and future perspectives

Plamen Sabev, Nely Valkova and Elena G. Todorovska

Evaluation of advanced mutant lines of winter barley

Boryana Dyulgerova and Nikolay Dyulgerov


Effect of growing legumes as pure and mixed crops on Otiorrhynchus ligustici L. (Coleoptera: Curculionidae) damage

Ivelina Mitkova Nikolova, Natalia Anastasova Georgieva and Viliana Marinova Vasileva

Screening of pepper (Capsicum spp.) accessions for infestation by pests in open field conditions

Vinelina Yankova, Velichka Todorova and Dima Markova


Some endangered healing plants in Bulgaria-legislative regulation, protection, characteristic description, application, agricultural cultivation

Iliyana Yaneva, Valentin Balabanski, Tatiyana Karanesheva and Ignat Ignatov

Fractionation analysis of potentially toxic elements in apples for evaluation of their availability to humans

Veronika Mihaylova, Valentina Lyubomirova, Boyan Todorov and Rumyana Djingova

Ordinary least squared linear re­gression model for estimation of zinc in wild edible mushroom (Suillus luteus (L.) Roussel)

Miroslava T. Ivanova, Tzenka I. Radoukova, Lilko K. Dospatliev and Maria N. Lacheva

Content of Fe and Mn in waters and zebra mussel (Dressena polymorpha) from ovcharitsa dam, Stara Zagora region, Bulgaria

Elica Valkova, Vasil Atanasov and Petya Veleva

Perspective agriculture cultivation of the bulb onion with drip irrigation

Elena V. Kalmykova, Nikolay Yu. Petrov, Sergey D. Fomin, Olga V. Kalmykova, Elena S. Vorontsova, Tatyana S. Koshkarova and Svetlana V. Ileneva

Energy efficiency of sweet corn cultivation at drip irrigation in dependence on depth of plowing, fertilization and plants density

Raisa Vozhehova, Viktor Ushkarenko, Serhii Kokovikhin, Iryna Biliaieva, Pavlo Lykhovyd, Nataliia Lavrenko and Ivan Mrynskyi


Blood biochemical profiles of dairy cows and their calves from Bulgarian Black and White Cattle Breed

Atanaska Teneva, Kalin Hristov and Georgi Stoimenov

Quality of meat in purebred pigs involved in crossbreeding schemes. I. Chemical composition and quality characteristics of m. Longissimus thoracis

Jivko Nakev, Teodora Popova


A comparative study of free and immobilized brewing yeast fermentation performance based on kinetic parameters

Luljeta Pinguli, Rozana Troja, Ilirjan Malollari; Vilma Gurazi and Terkida Vaso

Antioxidant activity and sorption characteristics of ready-made mixture with lucuma powder

Adelina Bogoeva, Albena Durakova, Radka Vrancheva and Anton Slavov


Innovative harvesting methods about the harvest losses for two machines

Ibrahim J. Hamzah and Salih K. Alwan Alsharifi