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Preface

Prof. Ivan Atanassov

Mr. Ventsislav Varbanov

Assoc. Prof. Dr. Georgi Moskov

Plenary Session

• On Mediterranean Soils Conferences: A Brief History

D.H.Yaalon.

• Soil Resilience - a Basis for Sustainable Land Use

W.E.H. Blum.

• Impacts of Land Degradation in the Mediterranean Region

H. Eswaran and P. Reich

• Classification, Properties and Distribution of Red Mediterranean Soils

T.G. Boyadjiev and I. Atanassov

 

Topic A: GENESIS AND CLASSIFICATION OF SOILS IN REGIONS WITH MEDITERRANEAN TYPE CLIMATE

• Soils with a Xerix Soil Moisture Regime in North Africa

R. Almaraz and H. Eswaran

• Heavy Mineral Content of the Fine Sand Fraction of Some Red Soils in Murcia (SE Spain)

A. Faz, M.T. Fernandez and R. Ortiz

• 13C NMR Studies of Organic Matter in Some Red Soils from Murcia, Southeast Spain

A. Faz, A.R. Mermut and R. Ortiz

• Study of the Mineralogical Composition of Cinnamonic Forest Soils from South-Eastern Bulgaria

E. Velizarova and G. Popov

• Climatic Conditions for the Formation of Red Soils in Bulgaria

G. Gjurov and N. Artinova

• Humus Systems of Soils Formed under Mediterranean Climate Influence on the Territories of Bulgaria, Greece and Turkey

M. Grozeva and L. Petrova

• Morphogenetic and Physico-Chemical Nature of Terra Rossa from Slaviyanka Mountain

M. Teoharov and A. Arsova

• Zinc and Copper Adsorption by Red Mediterranean Soils

K.P. Prodromou, A.Pavlatou-Ve, N.Barbayiannis and A.Spyropoulos

• Mineralogical and Micromorphological Characteristics of Two Greek Red Mediterranean Soils

A. Spyropoulos and A. Simonis

• Mineralogical and Physico-Chemical Study of Chromic Luvisol Clays from Greece and Bulgaria

K. Boneva and I. Atanassova

• Fe, Al, and Mn Extractable Compounds along Depth of Soils with Different Colour

M. Jokova and M. Teoharov

• Organic Matter Particularities of South-Eastern Rhodope Mountain Soils

T. Shishkov and L. Petrova

 

Topic B: SOIL FERTILITY IN THE REGIONS WITH MEDITERRANEAN TYPE CLIMATE

• Response of Cotton Grown in Central Greece to Different Levels of Mineral Fertilization

I. Manolov

• Trophicity of Chromic Sols in Mediterranean Area

V. Alexandra

• A Nutritional Survey of Cv. Starkcrimson at Kastoria District (Northern Greece)

D. Velemis, D. Almaliotis and S. Bladenopoulou

• Suitability of the Alluvial-Meadow Soils in the Maritsa River Basin for Vegetable Crops Growing

D. Stoichev, P. Alexandrova, L. Raikova, G. Angelov, D. Stoicheva and D. Donov

• Productive Possibilities of Red Mediterranean Soils (Chromic Luvisols, FAO) in the Region of Kardjali (Bulgaria)

P. Bojinova, V. Krasteva and E. Filchevav

• Changes of Nitrogen Regime of Cinnamonic-podzolic Soil in South Bulgaria as Affected by Long-term Mineral and Organic-mineral Fertilization

E. Ikonomova, V. Koutev and R. Balabanova-Georgieva

 

Topic C: SOIL POLLUTION AND DEGRADATION IN THE REGIONS WITH MEDITERRANEAN TYPE CLIMATE

• Removal of Cd by Winter Barley (H. vulgare L.), Grown in Soils with Cd Pollution

A. Vassilev and P. Zaprianova

• Speciation of Trace Elements in Red Mediterranean Soils from Se Barcelona Area (Spain)

J. Bech, A. Lansac and J. Rustullet

• Risk Assessment of the Herbicide Imazethapyr in Two Different Soils

D. Petkova and R. Donkova

• Development of a GIS Database for Polluted Agricultural Lands of Bulgaria

I. Atanassov

• Ecological Evaluation of the Nitrogen Fertilizer Application in the Paddy Fields

D. Stoichev, D. Stoicheva, G. Angelov and K. Dimitrova

• Estimation of the Sludge Utilization from the Waste Waters Treatment Plants near Plovdiv Relating on the Limitance from the Heavy Metal Surplus

S. Marinova and H. Chuldyan

• Adsorption-Desorption Characteristics of Cu and Competition with Cd, Zn and Ni in Gleyic Acrisol Clay

I. Atanassova.

• Maximum Acceptable Concentrations of Cd, Ni, Cr and Hg in Agricultural Soils Depending on pH of the Soil

N. Nikolov and E. Zlatareva

• A Comparative Study of Methods for Availability of Pb, Zn and Cd in Polluted Calcareous Soils

E. Zlatareva and N. Nikolov

Topic D: SUSTAINABLE LAND USE IN THE MEDITERRANEAN REGIONS

• Regularities of Soil Detachment by Water Flow for Some Soils from Azerbaijan and Tadjikistan with Mediterranean Climate

M.S. Kuznetsov, V.M. Gendugov, O.A. Bazarov, M.S. Khalilov and A.D. Fless

• Amelioration of the Planosol for Sustainable Land Use

E. Doneva and N. Shopski

• Algae Flora in Soils from the Mediterranean Region

I. Puneva and M.Gr. Sokolovska

• Moisture Regime of Soils in South-Eastern Romania

A. Canarache

• Determinants of Sustainable Agriculture in the Southern Coastal Plains of Albania

P. Zdruli and H. Eswaran

• Economic Bases for Sustainable Land Use in Thrace Area, Turkey

F. Avsar

• Mycorrhizal Status of Vineyards Agricultural Red Mediterranean Soils in N. Syllata Area in Northern Greece

N. Karagiannidis and D. Velemis

• List of participants

V. Tzakov

I Panel Session: Structural Changes in Agriculture in CEECs and FSU

• Agricultural Privatization, Land Reform and Farm Restructuring in Central and Eastern Europe

J. Swinnen and E. Mathijs

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• New Farm Structures in the FSU: Has Efficiency Begun to Change

Z. Lerman

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• Structural Changes in Bulgarian Agriculture

I. Kanchev and J. Doichinova

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• Comparative Analysis of the Process of Transition in the Agricultural Sector of Selected Central and East EuropeanCountries: The KATO Research Project

Konrad Hagedorn and Volker Beckmann

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II Panel Session: Farm Restructuring and Efficiency

• Privatization, Farm Structures and Efficiency of Agricultural Production in Central and Eastern Europe

E. Schulze and P. Tillack

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• Examining Feasible Income Effects of Slovene Agriculture in the Light of Future Accession to EU

E. Erjavec, M. Rednak, J. Turk and T. Volk

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• Farm Structure Development under Market Economic Conditions – Theoretical Considerations and Empirical Evidence

S. Rasmussen

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• The Total Factor Productivity of Farm Structures in Central and Eastern Europe

G. Hughes

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• Production Efficiency and Organization of Czech Agriculture

E. Mathijs, L. Dries, T. Doucha and J. F. M. Swinnen

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III Panel Session: Farm Efficiency – Country Cases

• Land Reform and De-collectivisation in CEECs: Some Conceptual Issues

S. Davidova and A.Buckwell

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• Comparison of Farm Efficiency in Market and Transition Economies: Application of Non-parametric Data Development Analysis to East and West Germany

C. Brodersen and H. Thiele

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• Influence of Structural and Income Policies on Size and Product Pattern of Production Units in Bulgarian Agriculture

P. Mishev, M. Tzoneva, N. Ivanova and P. Kostov

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• Nature, Evolution and Efficiency of Farm Structures in Jugoslavia

T. Krmpotic, D. Petkovicanc G. Musanic

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• Economic Behaviour of the Collective Enterprises in Transitional Economies and Policy Implications

E. Serova

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IV Panel Session: Farm Efficiency, Credit Institutions, Information Needs, Social Implication

• Agricultural Producers Associations and the Reorganization of Milk Supply in Italy

D. Rama and C. Lanciotti

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• Information Needs of Farm Structures in Transition: Asymmetric Information Approach

R. Aikova and D. Terziev

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• A Model of Financial Intermediaries in Agriculture

D. Nikolov

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• Social Policy Concerning Incomes Under The Ongoing Reform in Agriculture

S. Hristova and H. Hristov

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• Fruits and Vegetables Marketing Channels

R. Hristov

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Plant Science

• Temperature and Precipitation Effect on Barley Yields

N. Przulj, V. Momcilovic and N. Miadenov

Received December, 23, 1998; accepted February, 12, 1999

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• Isolation of Mesophyll Protoplasts from Prunus domestica cv. Quetche

V. Kondakova

Received October, 5, 1998; accepted February, 12, 1999

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• Influence of Natural Products of Macrolofus costalis Fieb. on Tobacco

A. Nikolov

Received January, 15, 1999; accepted February, 12, 1999

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Soil Science and Agrochemistry

• Crops Productivity and Changes in Soil Nutritional Regime at Different Fertilizer Systems

T. Tomov, I. Manolov, S. Kostadinova and Y. Matev

Received December, 8, 1998; accepted February, 12, 1999

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• Influence of the Fertilization on the Properties of Durum Wheat Grain and Pasta Products

G. Panayotova and St. Gorbanov

Received January, 4, 1999; accepted February, 12, 1999

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Animal Science

• Assoation between Different Somatic Cell Count and the Production, Fat and Protein in Sheep Milk

N. Petrova, D. Nedelchev and D. Todorova

Received January, 26, 1999; accepted February, 12, 1999

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• Effect of Dietary Protein Degradability on Microbial Protein Supply to the Small Intestine of Sheep

D. S. Djouvinov

Received November, 1, 1998; accepted February, 12, 1999

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• Extruded Full-fat Soybeans as an Ingredient for Dietary Formulation for Broiler Chickens

N. A. Todorov, V. K. Gueorgieva, D. S. Djouvinov and J. Mitev

Received November, 3, 1998; accepted February, 12, 1999

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• Influence of Nitrates on the Growth of Tillapia and Possibilities for Reducing their Detrimental Effect

D. Pavlov, Y. Staykov, T. Mircheva, J. Mitev and D. Djouvinov

Received November, 3, 1998; accepted February, 12, 1999

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• Studies on the Net Cage Cultivation of Two-Summer-Old Carp (Cyprinus carpio) with Special Emphasis on the Growth Rate and Economic Results

Y. S. Staykov, I. Georgiev, J. E. Mitev, V. Atanassov and D. Djouvinov

Received December, 10, 1998; accepted February, 12, 1999

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• Cocoon Shape Inheritance in Hybrids between Multivoltine and Uni-Bivoltine Silkworm Bombyx mori L. Races

P. Tzenov, Y. Nacheva and N. Petkov

Received February, 18, 1998; accepted October, 5, 1998

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• Study of Weight and Linear Growth of Tench (Tinca tinca L.) Cultured in Fishponds

T. Hubenova – Siderova and L. Hadjinikolova

Received December, 15, 1998; accepted February, 12, 1999

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• Meat Quality of lntensively Fattened Ducks Broilers

D. Alexieva, A. Genchev and V. Drbohlav

Received January, 7, 1999; accepted February, 12, 1999

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• Estimation of Volatine Fatty Acid Production in the Rumen of Sheep. I. Effect of Infusing Propionic and Butyric Acid in the Rumen on its Characteristics

D. S. Djouvinov

Received February, 12, 1999; accepted May, 31, 1999

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• Microbiological Analysis of Bulk Raw Goat Milk

I. Vashin, G. Mihailova, Sv. Tiankov and V. Kafedjiev

Received October, 30, 1998; accepted February, 12, 1999

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• Correlations among Selection Traits in Buffaloes from New Breed Established in Bulgaria

P. Penchev

Received September, 24, 1998; accepted February, 12, 1999

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• Freezing Ability of Sperm from Young Buffalo and Cattle Bulls

Sv. Kolev and K. Dimov

Received November, 21, 1998; accepted February, 12, 1999

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• Characteristic of the Morphological Traits of the Udder in Buffaloes

K. Dimov, M. Tzankova and A. Alexandrov

Received December, 9, 1998; accepted February, 12, 1999

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Veterinary Medicine

• Effect of the Synthetic Pyretroid Deltamethrin on the Level of Sulfhydryl Groups in Rat Liver

S. Cheshmedjieva, P.Popova, T. Modeva, I. Dimitrova and Ya. Profirov

Received December, 22, 1998; accepted February, 12, 1999

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• Historical Data, Spreading, Aetiology and Epidemiology of Mycotxic Nephropathy (Ochratoxicosis) in Pigs (review)

S. D. Stoev

Received June, 26, 1998; accepted February, 12, 1999

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• Prevalence of the Hydatid Echinococcosis in the Plovdiv District

V. Toncheva and P. Zhelyaskov

Received October, 14, 1998; accepted February, 12, 1999

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• A Study on Echinococcosis in Humans in Bourgas Region for the Period 1991-1998

A. Stoyanov, J. Mitev, D. Dimanov, T. Gogov and S. Georgiev

Received December, 9, 1998; accepted February, 12, 1999

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• Seasonal Changes in Serum Enzymes of Male Goats

S. O. Hussain, K. I. Al-Badry, A. S. Al-Jahabi and M. K. Asofi

Received January, 10, 1999; accepted February, 12, 1999

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Short Communications

• Investigation on Photosynthesis, Dark Respiration and Transpiration with in vitro Cultured Vine Plants during Their Acclimatization

V. Dimitrova and T. Slavcheva

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• Standard of the Karakachan Dog

V. Dintchev

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  Plant Science

• DNA Markers and its Application in Plant Breeding for Desease Resistance in Wheat

N. A. Alexandrova, E. G. Todorovska, E.I. Marinova and A.I. Atanassov

Received March, 10, 1999; accepted May, 31, 1999

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• Effect of Vegetation Rainfalls on Grain Yield from Lentil (Lens culinaris Medic) under the Conditions of Dobroudja (Bulgaria)

G. Milev

Received March, 4, 1999; accepted May, 31, 1999

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• Effect of the Length of the Growing Season of the Rice in Relation to Attacking Degree by Some Seedborn Pathogens

Y. Stancheva, M. Todorov and S. Angelova

Received March, 4, 1999; accepted May, 31, 1999

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• Characterization of Cucumber Mosaic Virus (CMV) Tolerance in Cucumber Breeding Lines Using Indirect ELISA

D. Kostova, A. Karparov and M. Alexandrova

Received April, 10, 1999; accepted May, 31, 1999

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• Naturally Occurrence of Entomopathogenic Deuteromycotina in Bulgaria

S. Draganova

Received March, 9, 1999; accepted May, 31, 1999

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• Establishment of Squash Mosaic Virus (SqMV) in Seeds of Sugarbeet and Cucurbit Crops by ELISA Method

B. Dikova

Received February, 24, 1999; accepted May, 31, 1999

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Food Science

• Yeast and Food: Tradition and Perspectives Soil Science, Agrochemistry and Ecology

A. Angelov and Z. Roshkova

Received February, 24, 1999; accepted May, 31, 1999

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• Effect of Nitrogen Fertilization and Variety Differences on Nitrate Reductase Activity of Wheat (Triticum aestivum)

I. Manolov, V. Chalova and S. Kostadinova

Received January, 18, 1999; accepted May, 31, 1999

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• Investigations on Fertigation of Peach on Three Soils. I. Migration and Localization of Nitrogen

G. Stoilov, K. Koumanov and D. Dochev

Received March, 18, 1999; accepted May, 31, 1999

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• Investigations on Fertigation of Peach on Three Soils. II. Migration and Localization of Phosphorus

G. Stoilov, D. Dochev and K. Koumanov

Received March, 18, 1999; accepted May, 31, 1999

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Animal Science

• Effect of Different Feeding Levels of First Litter Sows during Pregnancy on the Changes in Body Weight

M. Ignatova and D. Vassilev

Received April, 11, 1999; accepted May, 31, 1999

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• Phenotypic and Genetic Variability of Some Traits Characterizing the Qualities of Fresh Semen in Buffalo Bulls

Sv. Kolev and I. Sabeva

Received April, 11, 1999; accepted May, 31, 1999

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• Optimum Live Weight and Productivity of the Sheep from North-Eastern Bulgarian Fine Fleece Breed - Shoumen Type

G. Stefanova

Received March, 13, 1999; accepted May, 31, 1999

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• Comparative Studies on the Trypsin Inhibitor Activity in Soybean Seeds and Soybean Products

V. Tzvetkova and M. Simovska

Received March, 19, 1999; accepted May, 31, 1999

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• Prediction of Lactation Yield by Multiple Regression in Pleven Blackhead Dairy Sheep

G. Dimov, D. Georgiev and G.Getov

Received March, 17, 1999; accepted May, 31, 1999

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Veterinary Medicine

• Shearing Stress in Pregnant Ewes. I. Progesterone Level

D. Gudev, E. Kistanova, I. Alexiev and S. Alexsandrov

Received April, 1, 1999; accepted May, 31, 1999

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• Dynamics of Some Biochemical Parameters in Cocks Semen during the Productive Period and Their Relationship with the Fertility

V. Atanassov, S. Dimitrov, E. Dishlyanova and T. Angelova

Received March, 5, 1999; accepted May, 31, 1999

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• Biochemical and Biological Characteristics of Tilapia Fingerlings Reared at Different Stock Densities

V. K. Atanassov, Y. S. Staykov and J. E. Mitev

Received March, 11, 1999; accepted May, 31, 1999

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• A Study on Echinococcosis / Hydatosis in Animals

A. Stoyanov, D. Dimanov, J. Mitev and S. Georgiev

Received March, 5, 1999; accepted May, 31, 1999

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• Influence of the Yeast Culture (Yea - Sacc-1026) on the Rumen Metabolism in Sheep Agricultural Economics

V. Radev

Received April, 13, 1999; accepted May, 31, 1999

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• Marketing Survey among Private Farmers about the Business and Services They Prefer

N. Naidenov and L. Liubenov

Received March, 5, 1999; accepted May, 31, 1999

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• Financial Conditions of the Enterprises in the Canning Industry in Bulgaria in the 1990-ies

A. Simova

Received April, 15, 1999; accepted May, 31, 1999

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• Economic Assessment of Agricultural Marcet Distortions in Bulgaria during the Transition: PAM Analysis

N. Ivanova

Received April, 8, 1999; accepted May, 31, 1999

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Agricultural Technics

• A Computer Vision System for Separating Tulip Bulbs into Size Groups

V. Naydenov, G. Mitev and A. Keen

Received March, 15, 1999; accepted May, 31, 1999

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• The Theoretical Basis for Optimum Levels of the Energy Consumption Rates in Grain Production

D. S. Ivanov

Received March, 25, 1999; accepted May, 31, 1999

  Plant Science

• A study of the rheological properties of T. aestivum germplasm from different geographic areas

D. Boyadjieva, V. Dacheva and M. Mungova

Received August, 5, 1999; accepted September, 30, 1999

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• Distribution of phaseolin types of common beans Phaseolus vulgaris L. depending on physical and geographical conditions of the territory of Bulgaria

N. Tomlekova, T. Cholakov, I. Poriazov and P. Ivanov

Received August, 10, 1999; accepted September, 18, 1999

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• Influence of basic fungicide groups on pollen germination of grape varieties Bolgar and Cabernet Sauvignon

A. Nikolov, P. Botiyanski, D. Kehayov and V. Roichev

Received May, 3, 1999; accepted July, 31, 1999

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Soil Science, Agrochemistry and Ecology

• Investigations on fertigation on three soils – zones of salt accumulation

K. Koumanov, G. Stoilov and D. Dochev

Received May, 3, 1999; accepted July, 31, 1999

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• Reaction of different varieties winter barley (Hordeum vulgare) to lead concentration in the soil

I. Manolov

Received May, 3, 1999; accepted July, 31, 1999

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• Arsenic accumulation and effect on peroxidase activity in green bean and tomatoes

E. Miteva and S. Peycheva

Received February, 16, 1999; accepted July, 30, 1999

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• Transorgan tissue pH gradients and their significance for the maize plant functioning as a whole in the process of nutrient uptake during ontogenesis

N. Mitreva

Received February, 11, 1999; accepted July, 31, 1999

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Food Science

• Migration and detoxification of neocidol in membrane milk treatment

K. Dinkov

Received May, 31, 1999; accepted July, 31, 1999

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Animal Science

• Difference between species in the metabolism of technogenic radionucleids in the mammary gland of dairy animals

Tz. Hinkovski and V. Marinov

Received June, 10, 1999; accepted July, 31, 1999

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• Comparison of milk yield prediction by two and three test day records in Pleven Blackhead dairy sheep

G. Dimov, D. Georgiev and G. Getov

Received March, 17, 1999; accepted July, 31, 1999

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• Sources of specific variance and genetic determination of the earning in horses from Arabian breed

I. Sabeva

Received July, 12, 1999; accepted September, 7, 1999

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• Functional peculiarities of the udder in buffalo cows

K. Dimov, M. Tzankova and A. Alexandrov

Received April, 16, 1999; accepted July, 31, 1999

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• Relations between exterior and lineal measurements of carcass and meat productivity of buffalo calves

K. Dimov

Received January, 11, 1999; accepted July, 31, 1999

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Veterinary Medicine

• Investigation of some biochemical parameters in cervical mucus samples of fertile, repeat breeder and PGF_2a synchronised cows

M. Soylu, K. M. Cetin, I. Dogan, N. Gunes, U. Gunay and F. Erzurum

Received June, 1, 1999; accepted July, 31, 1999

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• Main blood vessels of the canine prostatic gland

M. Stefanov, R. Martin-Orti, R. Martin and I. Gaspar

Received May, 3, 1999; accepted July, 31, 1999

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• Seasonal changes in certain seminal attributes of Friesian bulls in Iraq

A. S. Al-Janabi, B. M. Abdul-Latif, K. I Al-Badry and F. F. Ibrahim

Received March, 30, 1999; accepted September, 5, 1999

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• Treatment of MMA syndrome in sows with the ecologically safe preparation tetrasim

T. Marinkov, T. Stoykova, D. Kotchankov, P. Parvanov, E. Slavov and V. Spasova

Received March, 24, 1999; accepted July, 31, 1999

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• How to determine the age of the golden jackal Canis aureus by cutting-teeth atrition and ossification of basal cranial synchondroses

E. Raychev, R. Dimitrov, T. Dimova and Hr. Hristov

Received June, 14, 1999; accepted July, 31, 1999

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Agricultural Economics

• Overview and prospectives for the development of the dairy industry in Bulgaria

A. Simova

Received February, 10, 1999; accepted May, 31, 1999

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Agricultural Technics

• Investigation of the theoretical model for optimum levels of the energy expenditure in grain production

D. Ivanov

Received March, 30, 1999; accepted July, 31, 1999

  Plant Science

• Dry Matter Accumulation and Chemical Copmosition in Bulgarian Varieties of Lentil I. Dry Matter Accumulation

T. K. Tonev, M. I. Mihov, I. Mitova and G. Milev

Received October, 27, 1999; accepted November, 8, 1999

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• Conformity of Electrophoretic Families of Phaseolus Vilgaris L. Collection Samples in Bulgaria with Morphological and Economic Indexes I. Seed and pod shapes

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

Received October, 1, 1999; accepted November, 8, 1999

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• Evaluation of the Phenotypic Variability in the Field Beans Collection (Phaseolus vulgaris L.)

Tz. Stoilova and G. Pereira

Received July, 19, 1999; accepted November, 8, 1999

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• Activities of Some Enzymes as Physiological Tests for Screening Resistance to Water Stress in Five Xerophytes

Yu. Markovska and D. Dimitrov

Received July, 19, 1999; accepted November, 8, 1999

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• Optimizing the Conditions for Nitrate Determination Using Reaction with 2.6 – Disilphophenol Acid

G. Pevicharova

Received July, 19, 1999; accepted November, 8, 1999

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• Temperature Influence on the Potato Cyst Nematode (Globodera rostochiensis Woll. 1923) Development

Zl. Trifonova

Received June, 1, 1999; accepted November, 8, 1999

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• Incidence of Charcoal Rot of Sunflower Caused by Sclerotium bataticola Taub. in Bulgaria

V. Alexandrov

Received February, 26, 1999; accepted November, 8, 1999

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• Productivity of Bulgarian Multifoliolate Alfalfa at Two Ecological Regions

D. Petkova, Ch. Yantcheva and N. Doduntchev

Received October, 7, 1999; accepted November, 8, 1999

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Soil Science

• Nitrogen Form in Root Nutrition of Sunflower

N. Mitreva and I. Mitova

Received May, 19, 1999; accepted November, 8, 1999

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Food Science

• Monolayer Moisture Content of Some Legume Seeds

N. D. Menkov

Received September, 8, 1999; accepted November, 8, 1999

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Animal Science

• Effect of the Different Somatic Cell Count on the Production and Composition of Buffalo’s Milk from Shoumen Region

N. Petrova and M. Zankova

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Received September, 19, 1999; accepted November, 8, 1999

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• Influence of Selenium and Iodine Supplementation on the Daily Milk, Fat and Protein Production During the Grazing Period of Sheep

Ts. Odjakova

Received September, 14, 1999; accepted November, 8, 1999

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• Influence of Iodine and Selenium Deficiency on Mmacro and Trace Element Content of Ewe's Milk (Blackhead Dairy Breed)

N. Petrova, L. Angelow, D. Todorova and D. Dochevski

Received October, 1, 1999; accepted November, 8, 1999

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• Study on Milk Composition of White Maritza Sheep and Dynamics During Milking Period

D. Dimov and G. Mikhaylova

Received July, 19, 1999; accepted November, 8, 1999

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• The Bioenergy Metabolism during Embriogenesis of Rainbow Trout

V. Atanassov, J. Mitev, Y. Staykov, T. Miteva and M. Minchev

Received September, 1, 1999; accepted November, 8, 1999

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• Modern Livestock Family Farms

B. Khodanovitch, D. Dinev and T. Atanassova

Received October, 10, 1999; accepted November, 8, 1999

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• Effect of Dietary Composition and Phoshorus Level on Some Biochemical Parameters in JeJunal Enterocytes of Broiler Chick

E. T. Toncheva and H. J. Stanchev

Received September, 2, 1999; accepted November, 8, 1999

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Veterinary Medicine

• Attempts for Treatment of Hypogalactia and Agalactia in Sows

T. Stoykova, T. Marinkov, D. Kotchankov, P. Parvanov and N. Vasilev

Received March, 24, 1999; accepted November, 8, 1999

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• Some Changes of the Electrocardiogram in Dogs

Y. Kostov and V. Alexandrova

Received July, 29, 1999; accepted November, 8, 1999

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• Changes in Some Fish Blood Parameters Produced by Sodium and Potassium Nitrate Mixture and by Its Combination with Extract from Cynara Scolimus L.

M. Popova, Ch. Popov, D. Pavlov and Y. Staykov

Received September, 7, 1999; accepted November, 8, 1999

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Agricultural Economics

• Assessment of the Economic Situation of the Farmers in Bulgaria

O. Boiukliev, R. Popov and A. Simova

Received September, 10, 1999; accepted November, 8, 1999

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• Work Motivation in the Agricultural Sector

A. Kraeva – Miteva

Received September, 2, 1999; accepted October, 20, 1999

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Agricultural Technics

• A Comparative Analysis of the Coefficients of Energy Efficiency at the Various Levels of The Energy Expenditure

D. Ivanov

Received March, 25, 1999; accepted November, 8, 1999

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Short Communications

• Screening Tests of Fungicides from Plant Origin towards Powdery Mildews from Roses and Cucumbers

A. Nikolov and I. Boneva

Received October, 5, 1999; accepted November, 8, 1999

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• Fungicidal Actyvity of Natural Plant Products Against Powdery Mildew and Apple Scab

A. Nikolov and I. Boneva

Received October, 5, 1999; accepted November, 8, 1999

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• Bioelectric Field of Wild Animals (a hypothesis)

Y. Kostov and R. Holland

Received September, 10, 1999; accepted November, 8, 1999

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