Volume 13, Number 3, September 2021

Review

The endemic plants – a valuable resource with vast potential in Bulgaria: A brief overview
D.T. Petkova, D.Sp. Mihaylova

Genetics and Breeding

Breeding assessment of new promising cotton lines
V. Dimitrova, R. Dragov

Biometric data of peach and nectarine fruit and stones
A. Zhivondov, S. Savchovska, S. Pandova, D. Petkova, P. Doykina, I. Manolov

Comparative study of some phenotypic characteristics between the Ispenc (Turkey) and Southwestern Bulgarian dzhinka chicken breeds
I. Pavlova, D. Özdemir, H. Lukanov

Nutrition and Physiology

Photosynthetic activity and productivity of durum wheat (Triticum durum Desf.) affected by certain preparations and various terms of sowing
P. Nikolov, G. Delchev

Influence of soybean meal replacement with high-protein sunflower meal on “Clarcs of energy distribution/protein transformation” in broiler chickens
S. Chobanova, D. Penkov

Application of rosemary essential oil (Rosmarinus officinalis Linnaeus, 1753) for anesthesia and transport of bighead carp (Hypophthalmichthys nobilis Richardson, 1845) fingerlings
V. Krasteva, M. Yankova, A. Ivanova

Effect of black pepper (Piper nigrum) extract on productive traits, economic efficiency and blood biochemical parameters of rainbow trout (Oncorhynchus mykiss W.)
Ts. Stoev, G. Zhelyazkov

Food consumption and winter mortality in bee colonies wintering in hives made from different materials with lattice and solid bottom
I. Zhelyazkova, S. Lazarov

Production Systems

Operational characteristics of a machine-tractor unit for direct sowing of barley using the JD LINK telematics system
G. Tihanov, G. Hristova

Selectivity and stability of herbicides, herbicide tank mixtures and herbicide combinations on seed yield of Clearfield oilseed canola (Brassica napus L.)
G. Delchev

Comparative study of a milking unit pulsation system in laboratory and field conditions
G. Dineva

Pulsation parameters of new and used milking liners with round cross section
G. Dineva, K. Peychev, D. Georgiev

Agriculture and Environment

Design parameters of furrow forming and compacting roller of the combined seeder STS-80
G. Hristova, M. Dallev, G. Tihanov

Study on the effectiveness of chemical and biological agents to control tomato leaf miner (Tuta absoluta Meyrick, 1917)
R. Mineva, V. Yankova, N. Valchev

Implications of captive breeding for the reintroduction of the Saker falcon (Falco cherrug) in Bulgaria
R. Petrov, Y. Andonova, Y. Gancheva, I. Klisurov

Product Quality and Safety

Bacteria variety causing clinical mastitis in Holstein-Friesian cows in Pelagonia region, North Macedonia
S. Stojanovski, G. Cilev, B. Trajanoska

Evaluation of fatty acid profile and naturalness of butter marketed in Bulgaria
N. Naydenova

Cover

Contents

Title Page