Volume 3 (2002) Number 2

During the past decade many countries of Eastern and Central Europe have experienced crucial and often shocking changes in their economies. By now the economies of the region have started on a path of rapid economic progress. However, agriculture's share of the total economy has steadily declined in most of the countries. A strange contradiction may be seen in the fact, that agricultural research is thriving, in spite of all the financial hardships and technical barriers. The management of natural resources in a productive, but also sustainable way is becoming a major focus throughout the world, which requires better information on the present state of these resources, and on the production processes utilising - and often depleting - them. Agriculture heavily relies on natural resources, such as farmland, the genetic potential of crop varieties and animal breeds, water and climatic conditions. Inefficient and wasteful use of these resources will have an impact not only on the agricultural sector but on the overall global environment. For this very reason the evidence of creativity, originality and hard work, being manifested in the abundance of research results described in papers by researchers of the region is a cause of reassuarance, or even optimism. The present issue of JCEA contains 9 papers from 5 countries in 4 languages. Three of the papers deal with maize, one of the most important arable crops of the region, analysing the impacts of magnetic field on the biological characteristics of the plant, describing experimental results on the root development of an important grass weed of the crop, or assessing and modelling the plant-water relationships of the maize plant and its environment, respectively. This issue also presents exciting research achievements on the immunological characteristics of chicken, laboratory rearing of a reduviid predator, genetic characteristics of a pepper variety, and the impacts of daminozide and fertiliser applications on a variety of aster. There are also two management-oriented papers in this issue. One of them gives us a detailed overview of the evolution of fruit growing in Romania in the 20th century, describing the composition of orchards and the shift in varieties and yields during the time. The other paper measures the efficiency of the technical and human resources of agricultural businesses by way of the concept of entropy. These papers help to advance the state-of-the art for exciting fields of research and also raise challenging questions for future research. The Editors

CONTENTS: Fruit growing in Romania in the 20th century Pomicultura Româmiei în secolul XX ROPAN G., ARDELEAN* M., SESTRAS R., MITRE V., MITRE I., ROMAN I. REZUMAT ABSTRACT DETAILED ABSTRACT TOP OF TEXT PDF FILE Language: English 83 - 88 Study of the influence of magnetic field on some biological characteristics of Zea mais Изследване влиянието на магнитното поле върху някои биологични характеристики на Zea Mais ALADJADJIYAN A. РЕЗЮМЕ ABSTRACT DETAILED ABSTRACT TOP OF TEXT PDF FILE Language: English 89 - 94 Simulation of some parameters of plant water relation in maize Kukorica néhány vízháztartási jellemzőjének szimulációja ANDA A., LOKE ZS., SZ. KIRKOVITS M. ÖSSZEFOGLALÁS ABSTRACT DETAILED ABSTRACT TOP OF TEXT PDF FILE Language: Hungarian 95 - 104 Study of the early root development of important arable grass weeds in maize I. large crabgrass (Digitaria sanguinalis (L.) SCOP) A kukorica fontosabb gyomnövényeinek korai gyökérfejlődése I. az ujjasmuhar (Digitaria sanguinalis (L.) SCOP) MIKE* Z., HUNYADI K. † ÖSSZEFOGLALÁS ABSTRACT DETAILED ABSTRACT TOP OF TEXT PDF FILE Language: English 105 - 112 Effect of daminozide and fertilizer application on the number of buds and inflorescences of new aster grown under the short photoperiod conditions Utjecaj daminozida i prihrane na broj pupova i cvatova oštrolisnog zvjezdana u uvjetima skračenog fotoperioda VRŠEK* I., HAJOŠ D. SAŽETAK ABSTRACT DETAILED ABSTRACT TOP OF TEXT PDF FILE Language: Croatian 113 - 122 Aspects of management of agricultural firms Vybrané aspekty řizení zemědělských podniků ROLÍNEK L., DOKTOROVÁ M. ANOTACE ABSTRACT DETAILED ABSTRACT TOP OF TEXT PDF FILE Language: Czech 123 - 130 Parameters of the immunological profile in chickens treated with a Calendula officinalis extraction Parametri ai profilului imunologic la pui de gaina tratati cu un extract din Calendula officinalis DUMITRU C., SPÎNU* M., BRUDAOCĂ G.F., DOBREAN V., OPRIO A., ANDRU C. REZUMAT ABSTRACT DETAILED ABSTRACT TOP OF TEXT PDF FILE Language: English 131 - 136 Small scale laboratory rearing of a reduviid predator, Rhynocoris marginatus Fab. (Hemiptera: Reduviidae) on corcyra cephalonica stainton larvae by larval card method SAHAYARAJ K. ABSTRACT TOP OF TEXT PDF FILE Language: English 137 - 148 Pepper (Capsicum annuum L.) cytoplasmic male sterilty Paprika (Capsicum annuum L.) citoplazmás hímsterilitásának vizsgálata PÁKOZDI K., TALLER* J., ALFÖLDI Z., HIRATA Y. ÖSSZEFOGLALÁS ABSTRACT DETAILED ABSTRACT TOP OF TEXT PDF FILE Language: English 149 - 158