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Archive Volume 7

Number 1
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70 Anniversary of Prof. Ivan ATANASSOV

Plant Science

• Organic Farming: Back to the Past or the Solution for a Sustainable Agriculture? Chance and Challenge for the Bulgarian Agriculture!

L. Carlier

Received January, 5, 2001; accepted January, 21, 2001

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• Breeding Wheat Lines for Host-Plant Resistance to Cereal Leaf Beetle by Using the Cross-Mutation Method

K. Kostov

Received November, 10, 2000; accepted January, 20, 2001

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• Genetic Control of the Reaction to Common Bacterial Blight Xanthomonas campestris pv. phaseoli (Smith) Dye in HR45 and NAB69 Dry Bean Lines Ph. vulgaris L.

D. Genchev and I. Kiryakov

Received November, 10, 2000; accepted January, 12, 2001

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• Possibilities for Establishing an Elite Mother Plant Stand of Promising Grapevine Cultivars and Clones in Bulgaria Through the Method of Tissue Culture

S. Pandeliev, I. Tzvetkov and V. Roytchev

Received December, 10, 2000; accepted January, 15, 2001

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• Effect of Cultar on the Photosynthetic Apparatus and Growth of Cherry Trees

V. Lichev, M. Berova and Z. Zlatev

Received January, 7, 2001; accepted January, 21, 2001

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• Reaction of Resistant and Sensitive Plants to Chlorsulfuron and Phenylurea Cytokinin 4-PU-30

G. Ts. Georgiev, E. T. Yakimova and L. K. Iliev

Received December, 5, 2000; accepted January, 15, 2001

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Soil Science and Ecology

• Mechanisms of Chelate Formation during Organo-mineral Melioration of Heavy Metals Polluted Acid Soils (I)

T. Raychev, A. Arsova, S. Popandova, G. Jozefaciuk, Z. Sokolowska and M. Hajnos

Received December, 10, 2000; accepted January, 5, 2001

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• Content of Macro and Microbiogenic Elements in the Grass Communities of the Field of Sofia Area

N. Georgiev

Received November, 10, 2000; accepted January, 15, 2000

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Animal Science

• Ecologically Friendly Approaches for Quality Evaluation of Herbaceous Forages in Bulgaria

I. Krachunov, T. Jeliazkov and A. Kirilov

Received January, 5, 2001; accepted January, 21, 2001

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• Somatic Cell Count, Milk Production and Properties of Goat Milk From Bulgarian Dairy White Breed

N. Petrova, P. Zunev and G. Uzunov

Received December, 15, 2000; accepted January, 15, 2001

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• Isoelectrophoretic Studies of Stage Specificity of Soluble Protein Expression of Apis mellifera L.

E. Ivanova, I. Dobrovolov and P. Tersieva

Received October, 5, 2000; accepted November, 21, 2000

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• Estimation of the Breeding Value of Stallions from Arabian Breed Regarding the Basic Body Measurements

I. Sabeva

Received March, 28, 2000; accepted December, 10, 2000

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• Effect of Balanced NPK and Micronutrient Fertilization of Mulberry Plantations on the Development and Productivity of Silkworm (Bombyx mori L.)

H. Greiss and N. Petkov

Received December, 5, 2000; accepted January, 15, 2001

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• On the Regularity of Inheritance of Productive Indexes in Reciprocal Hybrids with the Participation of Genetically Sex-Marked Races of Silkworm (Bombyx mori L.)

N. Petkov and Y. Nacheva

Received December, 5, 2000; accepted January, 15, 2001

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• Composition of Sheep Milk from Blackhead Pleven Breed

S. Boikovski and D. Georgieva

Received April, 5, 2000; accepted September, 21, 2000

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Veterinary Medicine

• Florfenicol and Thiamphenicol – Perspective Analogs of Chloramphenicol

T. Popova and N. Dimitrov

Received November, 10, 2000; accepted January, 15, 2001

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• Electrocardiographic Data in Some Heart Diseases of Dogs

V. Alexandrova and Y. Kostov

Received August, 5, 2000; accepted September, 21, 2000

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Short Communications

• Rates of Genetic Difference between Parent Breeds of Silkworm Moth (Bombvx mori L.) Hybrids for the Indexes of Intracocoon Unevenness and Intracocoon Concordance of the Silk Filament

Y. Nacheva. and N. Petkov

Received December, 8, 2000; accepted January, 15, 2001

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Guide for authors

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in memoriam

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Number 2
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Plant Science

• Seed Dormancy in Lettuce Seeds (Lactuca sativa L.) and its Relation with Plant Vegetation Periods

S. D. Stoyanova and St. N. Neykov

Received February, 15, 2001; accepted March, 1, 2001

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• Entomophthoroses on Some Aphids (Homoptera: Aphididae) Observed in Bulgaria

S. Draganova, G. Trenchev and R. Tomov

Received January, 21, 2001; accepted March, 1, 2001

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• Some Morphological Peculiarities of Dihaploid Lines of Pickling Cucumbers and Possibility for Their Inclusion in the Heterosis Breeding

V. Nikolova

Received January, 10, 2001; accepted March, 10, 2001

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• Toxic Action of Plant Extracts on Some Pests of Economic Importance

N. Velcheva, N. Atanassov, V. Velchev, R. Vulcheva, O. Karadjova and M. Velichkova

Received January, 15, 2001; accepted March, 10, 2001

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• Some Morphological and Bioecological Characteristics of Iva xanthifolia (Nutt.)

S. Milanova

Received February, 21, 2001; accepted March, 18, 2001

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• To the Problem of the Weeds in Seed Production of Lucerne (Medicago sativa L.)

Ts. Dimitrova

Received January, 21, 2001; accepted March, 1, 2001

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• Influence of Ripening on Tomato Fruit Quality

G. Pevicharova and T. Todorov

Received January, 5, 2001; accepted February, 10, 2001

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• Genetic and Phenotypic Variability in Some Broccoli (Brassica oleracea L. var italica Pl.) Hybrids

K. Mihov and G. Antonova

Received February, 10, 2001; accepted March, 21, 2001

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• The Influence of Rootstock on the Growth and Productivity of Three Apricot Cultivars

M. Dimitrova

Received February, 21, 2000; accepted January, 21, 2001

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Soil Science and Ecology

• Role of Chelating Processes in Formation of Buffer Systems under Organo-mineral Melioration of Cu and Zn Polluted Acid Soils (II)

T. Raychev, A. Arsova, S. Popandova, G. Jjozefaciuk, Z. Sokolowska and M. Hajnos

Received December, 10, 2000; accepted March, 1, 2001

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Animal Science

• Changes in Amino Acid Composition and Content of Plastid Pigments in Alfalfa Regenerant Lines Under the Influence of Drought

A. Ilieva and V. Radeva

Received January, 5, 2001; accepted February, 21, 2001

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• Yield and Composition of Milk from Bulgarian White Dairy Goat

N. Petrova, P. Zunev, G. Uzunov and G. Gerchev

Received January, 5, 2001; accepted March, 21, 2001

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• Correlations Between the Morphological and Functional Traits of the Udder in Buffalo Cows from Bulgarian Murrah

K. Dimov

Received January, 21, 2001; accepted March, 1, 2001

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• Selection Aspects of the Quality of Movements in Horses From Arabian Breed

I. Sabeva

Received February, 5, 2001; accepted March, 18, 2001

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Veterinary Medicine

• Bioacumulation of Natural Radionuclides and Changes in the Lipid Peroxidation in Carp (Cyprinus carpio) and Roach (Rutilus rutilus)

M. Dimitrova, E. Uzunova, V. Bogdanova, V. Velcheva and Tz. Bacarjieva

Received November, 21, 2000; accepted February, 10, 2001

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• Isolation of Methicillin – Resistant Staphylococci from Meat and Milk Foodstuff

K. Bojkova and I. Stefanov

Received December, 21, 2000; accepted March, 1, 2001

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Short Communications

• Possibilities for Water Status Evaluation of Young Cherry Trees (Prunus avium L.) on Clonal Rootstock GM₉ by Means of Some Physiological Markers

D. Dochev, V. Djouvinov, M. Gospodinova, K. Kolev, Ph. Boxus, V. Kerin, Z. Zlatev, N. Vichev, I. Kirkova and G. Stoimenov

Received February, 27, 2001; accepted March, 20, 2001

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• Effect of Oxamyl Treatment of Cucumber Seeds on Seedling Growth and Development

I. Dimov and P. Dimitrov

Received January, 19, 2001; accepted March, 1, 2001

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Number 3
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Agricultural Economics

• Urban Agriculture and Urban Planning in Bulgaria

P. Mishev and A. Yoveva

Received April, 20, 2001; accepted May, 10, 2001

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• The Food Market in Bulgaria

A. Simova and M. Koubratova

Received March, 10, 2001; accepted May, 18, 2001

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• Efficiency and Competitiveness of Bulgarian Cereal Farms

D. Kopeva and N. Noev

Received April, 7, 2001; accepted May, 22, 2001

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• Characteristics and Trends of the Bulgarian Foreign Trade with Food and Agricultural Products

A. Simova

Received March, 10, 2001; accepted April, 20, 2001

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• Some Problems of Technical Infrastructure in Rural Areas of Bulgaria and Poland during the Integration with European Union

D. Dinev, B. Khodanovich and R. Osypiuk

Received April, 21, 2001; accepted May, 10, 2001

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Plant Sciences

• Gliadin Analysis for Identification of 1BL/1RS Wheat-Rye Translocations and for Assessment of Protein Patterns in Aluminium Tolerant Genotypes

S. D. Stoyanova, D. B. Boyajieva and Ch. Ch. Phylipov

Received February, 10, 2001; accepted May, 11, 2001

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• Effect of Imidacloprid on the Tobacco Aphid (Myzus nicotianae Blackman) and the Peach Aphid (Myzus persicae Sulz.) – Vectors of Virus Diseases

O. Karadjova, D. Hristova and G. Adam

Received January, 21, 2001; accepted March, 1, 2001

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• Attack on Sunflower by Charcoal Rot (Sclerotium bataticola T.) under the Influence of Climate and Mineral Fertilization

V. Alexandrov and V. Koteva

Received March, 12, 2001; accepted May, 16, 2001

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• Virulence Survey of Puccinia recondita f. sp. Tritici in Bulgaria during the Period 1996-1999

M. Todorova and V. Kiryakova

Received April, 19, 2001; accepted May, 22, 2001

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• Susceptibility of the South American Leafminer Liriomyza huidobrensis (Blanch) to Some Insecticides

O. Karadjova

Received March, 15, 2001; accepted May, 10, 2001

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• Carbon Dioxide under High Pressure as an Alternative in Ephestia kuehniella (Zeller) and Plodia interpunctella (Hübner) (Lepidoptera, Pyralidae) Control

L. Markova

Received April, 5, 2001; accepted May, 28, 2001

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• Morphological Characteristics and Yield Structure of Some Brussels Sprouts Hybrids (Brassica oleracea var. gemmifera L.)

K. Mihov and G. Antonova

Received January, 21, 2001; accepted March, 1, 2001

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• Biochemical and Organoleptic Evaluation of Bulgarian and Foreign (F₁) Tomato Varieties for Fresh Consumption

G. Pevicharova and T. Todorov

Received April, 13, 2001; accepted May, 22, 2001

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• Effect of the Thinning of Ovaries on the Stem on the Growth and Productivity of Greenhouse Cucumbers

P. Dimitrov and M. Mihov

Received March, 10, 2001; accepted May, 22, 2001

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• Comparatively Investigation of Some Temperate Grasses and Legumes for Hay Production

V. Lingorski

Received March, 19, 2001; accepted May, 10, 2001

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• Characterization of Pseudomonas syringae pv. phaseolicola Races in North-Eastern Bulgaria

I. Kiryakov

Received March, 15, 2001; accepted May, 10, 2001

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Soil Science and Ecology

• Ecomonitoring Study of the Condition of Soil Cenoses from Heavy Metals Contaminated Grounds

I. Velcheva, K. Sapundjieva and P. Kostadinova

Received December, 28, 2000; accepted May, 10, 2001

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Animal Science

• Phenotypic and Genotypic Parameters of the Basic Estimations from the Complex Assessment in Horses from Arabian Breed

I. Sabeva

Received March, 19, 2001; accepted May, 22, 2001

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• Composition of Buffalo Milk. Sources of Specific Effects on the Separate Components

Tz. Peeva

Received January, 21, 2001; accepted March, 1, 2001

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• Influence of the Factor Number of Lactation and the Lineal Belonging on the Buffalo Milk Composition

M. Tzankova

Received March, 30, 2001; accepted May, 22, 2001

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Food Science

• Technology for Production of Low Viscosity Drinking Yogurt

S. Minkova

Received March, 21, 2001; accepted May, 11, 2001

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Short Communications

• Mathematical Forecast of Breeding Effect Based on Cocoon Shell Weight Index of Silkworm (Bombyx mori L.)

Y. Nacheva, N. Ptekov and P. Tzenov

Received November, 15, 2000; accepted May, 10, 2001

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• Variability of Isoelectrophoretic Spectra of Total Water-Soluble Proteins Depending on Honeybee Susceptibility to Bacillus larvae

E. Ivanova, I. Dobrovolov and P. Tersieva

Received December, 7, 2000; accepted March, 10, 2001

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Number 4-5
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Agricultural Economics

• Agro-food Competitiveness in Slovenia: The Policy Analysis Matrix Approach

Š. Boinec

Received January, 21, 2001; accepted March, 1, 2001

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• Major International Trade Regulations of Bulgarian Agrarian Sector

A. Simova

Received January, 21, 2001; accepted March, 1, 2001

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 Plant Sciences

• Influence of Direct Current upon Bud Dormancy in Grape Vine (Vitis vinifera L.)

P. Botyanski, V. Roychev and D. Braykov

Received July, 19, 2001; accepted September, 1, 2001

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• Identification of Potential Bud Fertility Parameters of Grapevine Cultivars Bolgar and Mavrud in the Autumn-Winter Period

V. Roychev and D. Braykov

Received July, 21, 2001; accepted September, 21, 2001

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• Decision Support System for Plant Protection in Winter Wheat

E. Uzunova and H. Krasteva

Received June, 5, 2001; accepted September, 15, 2001

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• Possibilities for Improvement of Onion Sets Planting Machine MSL-1.6 for Planting of Garlic Cloves

M. Mikhov and S. Vulchev

Received July, 16, 2001; accepted September, 1, 2001

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• Conformity of Electrophoretic Families of Phaseolus vulgaris L. Collection Samples in Bulgaria with Morphological and Economic Indexes. III. Productivity

N. Tomlekova, L. Krasteva, I. Poryazov and P. Ivanov

Received January, 21, 2001; accepted March, 1, 2001

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• Preliminary Results of the Study of Between-Species Hybrid 70/3 (P. spinosa x P. cerasifera) with Characteristic Peculiarities of P. domestica Species

I. Minev

Received January, 21, 2001; accepted March, 1, 2001

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• Effect of Gamma Irradiation for Induction of Gynogenesis in Cucumber (Cucumis sativus L.)

V. Nikolova, V. Rodeva, M. Alexandrova and V. Stoeva

Received January, 21, 2001; accepted March, 1, 2001

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• Yields Structure of Sown Perennial Grasses in Foothill Region of Central Northern Bulgaria

V. Lingorski

Received March, 21, 2001; accepted September, 1, 2001

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• Changes in Quality of White Cabbage (Brassica oleracea var. capitata L.) under Storage

K. Mihov

Received May, 29, 2001; accepted August, 1, 2001

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 Soil Science, Agrochemistry and Ecology

• Relationship between Viral Infection and Heavy Metals in Tomatoes (Lycopersicon esculentum)

E. Miteva, D. Hristova and S. Maneva

Received May, 28, 2001; accepted July, 16, 2001

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• Effect of Sunflower Fertilization with Increasing Nitrogen Rates at Different Seeding Terms

M. Stamboliev and M. Angelova

Received April, 6, 2001; accepted September, 21, 2001

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• Zinc Accumulation Capacity of the Meadow Vegetation in Different Mountain Areas (South and Central Bulgaria)

V. Kafedjiev, Tz. Odjakova, L. Angelow, P. Todorova and I. Petrova

Received April, 9, 2001; accepted September, 21, 2001

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Food Science

• Equations for the Calculation of Viscosity of Fruit Juice and Syrup

K. Kolarov, K. Dinkov, N. Menkov and D. Zhelyazkov

Received July, 21, 2001; accepted September, 21, 2001

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• Technology of Manufacture of High Viscosity Yogurt

S. Minkova

Received July, 21, 2001; accepted September, 21, 2001

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• The Effective Factors on Preparation of Low Degree Wheat Starch Phosphate and Its Characters

Zhongdong Liu

Received March, 28, 2001; accepted September, 1, 2001

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Animal Science

• Study on the Preservation Terms of Nondiapausing Silkworm (Bombyx mori L.) Eggs at Low Temperature

P. Tzenov, Y. Nacheva and Y. Lazarov

Received January, 21, 2001; accepted March, 1, 2001

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• Effect of Temperature on Silkworm Moth (Bombyx mori L.) Development and Productivity

H. Greiss and N. Petkov

Received January, 2, 2001; accepted March, 1, 2001

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• Testing of the Gene Bank Silkworm Moth Races for Parthenogenetic Development Predisposition

  Y. B. Vassileva and P. I. Tzenov

  Received January, 21, 2001; accepted March, 1, 2001

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• Raising Larvae of the Tench (Tinca tinca L.)

R. Fleig, T. Gottschalk and T. Hubenova

Received July, 21, 2001; accepted September, 1, 2001

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• Rearing of Pike (Esox lucius L.) up to a Fingerling Size

T. Hubenova, A. Zaikov and J. Karanikolov

Received August, 29, 2001; accepted September, 15, 2001

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• Karyotype Study on High Incidence of Neonatal Mortality in Cattle

I. Dimitrova

Received July, 10, 2001; accepted September, 15, 2001

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• Research on the Dynamics of the Alleles from Amylase Locus in the Cattle Populations, Reared in Bulgaria

A. Teneva

Received June, 7, 2001; accepted September, 1, 2001

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• Transferrin Allelic and Phenotypic Dynamics of Bulgarian Brown Cattle Herds

A. Teneva, N. Chemshirova and I. Dimitrova

Received January, 21, 2001; accepted March, 1, 2001

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• Heritability and Repeatability of the Traits in Sheep from Blackhead Pleven Breed Depending on the Type and Mating

S. Boikovski, G. Stefanova and D. Georgieva

Received March, 30, 2001; accepted May, 11, 2001

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• The Effects of Forced Molt Treatment on Body Weight, Oviduct and Some Blood Biochemical Contituents in White Hysex Hens

D. Chotinsky

Received January, 21, 2001; accepted March, 1, 2001

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Veterinary Medicine

• Biochemical Studies of Vitamin E and Selenium Deficiency in Growing Piglets

H. Hristev, L. Belchev and A. Angelov

Received August, 29, 2001; accepted September, 15, 2001

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***

• Report on the International Seminar on Molecular Markers and Plant Variety Testing

K. Roussanov

Number 6
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• Development of Agricultural Education in Bulgaria

I. Kouzmanova and D. Dochev

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Agricultural Economics

• Need for an Agri-Environmental Policy in Bulgaria

M. K. Hristova

Received October, 19, 2001; accepted November, 15, 2001

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Plant Sciences

• Wheat Breeding as a Basis of Grain Production in Bulgaria

I. Panayotov and T. Rachinski

Received November, 1, 2001; accepted December, 1, 2001

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• Conservation and Maintenance of Plant Varieties – an Important Step of the Co-ordinated Program for Plant Genetic Resources and UPOV Integration

S. D. Stoyanova

Received November, 1, 2001; accepted December, 1, 2001

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• Heterosis Effect in Hybrid Combinations of Dihaploid Sugar Beet Lines

G. Kikindonov and Tz. Kikindonov

Received August, 17, 2001; accepted October, 10, 2001

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• Epidemiology of Tomato Spotted Wilt Tospovirus in Bulgarian Tobacco Field

O. Karadjova, D. Hristova and G. Adam

Received January, 21, 2001; accepted March, 1, 2001

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• Entomopathogenic Fungi on Aphis Pomi De Geer (Homoptera: Aphididae) and Tetranychus Urticae K. (Acarina: Tetranychoidea)

S. Draganova and S. Simova

Received November, 21, 2001; accepted December, 1, 2001

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• Possibilities for Chemical Weed Control in the Cotton

M. Dimitrova, T. Georgieva and E. Laleva

Received June, 14, 2001; accepted November, 15, 2001

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• Inheritance and Correlations of Some Quantitative Fruit Characteristics in Relation of Improving the Efficiency of Breeding Selection of Pepper

N. Panayotov and D. Dimova

Received October, 19, 2001; accepted November, 15, 2001

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• Detection of Pear Decline Phytoplasma by Polymerase Chain Reaction in Bulgaria

M. Topchiiska and D. Sakalieva

Received September, 10, 2001; accepted November, 15, 2001

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• Faba bean (Vicia faba L.) Response to Seeding Rate, Seeding Date, Rate and Method of Phosphorus Application in a Mediterranean Type Environments

M. A. Turk and A. M. Tawaha

Received January, 21, 2001; accepted March, 1, 2001

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• Influence of the NPK – Fertilization Terms of Grass-Legume Mixture in Upland Region

V. Lingorski

Received September, 10, 2001; accepted November, 15, 2001

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Animal Science

• Estimation of Tryptophan Requirements for High Growth Rate in Pigs at 15 kg Live Weight: I. Preliminary Investigations at Six Different Levels of Tryptophan Allowance Within 9 Days of Test

M. L. Simeonova

Received September, 5, 2001; accepted November, 10, 2001

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• Investigation of Some Reproductive Qualities in Three and Four-breed Crosses in Pigs

A. Apostolov, S. Slanev, A. Stoikov and E. Gineva

Received October, 19, 2001; accepted November, 15, 2001

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• Effect of Different Dietary Protein Level on Body Weight, Feed Consumption and Biological Ability of Semen on Turkey Breeder Males

S. Dimitrov and T. Angelova

Received September, 7, 2001; accepted November, 12, 2001

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• Effect of Acetylsalicylic Acid on Adrenal Response to Immobilization and Adrenocorticotropin Administration in Goats

D. Gudev, S. Popova-Ralcheva, S. Alexandrov and P. Moneva

Received September, 10, 2001; accepted November, 5, 2001

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Food Science

• Regression Models of the Density of Fruit Juices and Syrups

K. Kolarov, E. Dimitrova and K. Dinkov

Received January, 21, 2001; accepted March, 1, 2001

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Short communications

• Level of Some Technogene Radionucleides in the Milk of Different Species Productive Animals

S. Boikovski and M. Tzankova

Received August, 21, 2001; accepted October, 10, 2001

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• Author Index

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• Subject Index

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• Contents of the Volume 7

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