Initial density to large extent determined the stand development thus is crucial to ensure efficient transfer of genetic gain in forestry. Lower density may reduce the stand establishment costs, but also impact the stem quality and standing volume. Very limited information exists about older sparse plantations, therefore aim of the study was to characterize the forest inventory parameters of low-density Norway spruce (Pice abies (L.) Karst.) stands. Data were collected in two planted, un-thinned, 47 year old, pure stands in central part of Latvia (56⁰N, 25⁰E) with initial density 600 and 1600 trees ha-1, growing on fertile mineral soil. Even the sparsest stand (600 trees ha-1) had standing volume that was not significantly different from the average in Norway spruce forests in similar conditions at the age of 80 years (294±28.8 and 318±18.7m3ha-1, respectively), based on National Forest Inventory data. Mean height (21-22 m) and length of branch-free part (<1 m) as well as diameter of the thickest branch in bottom 2m of the stem (<2 cm) and proportion of trees with stem cracks (4%) was not affected by initial stand density. Mean breast height diameter decreased and lengths of dry-branch section increased with increasing initial stand density. The proportion of browsed trees was smaller in sparser stand (23% vs. 31%). Notably lower initial density of planted stands than currently required (2000 trees ha-1) can be used while avoiding negative impact on forest inventory parameters.

Today, economic conditions in the market encourage farmers to look for ways to produce quality produce at a low cost without polluting the environment. This leads to the search for new technologies that make it possible to strike a balance between criteria such as animal welfare, environmental protection and the cost of production. The research carried out reveals a new approach to housing conditions, constructional and technological solutions. Cowshed ground and the surrounding soil temperature fluctuations have a seasonal nature, as the Lithuanian climate is characterized by temperature change in individual seasons. The cowshed experimental studies show that a significant influence on the ground soil temperature field has the animal radiant heat that transmits not only in the air but also on the ground soil through the floor. The highest temperature of the analyzed soil during the cold season is under the floor of the bearing housing. The temperature relationship of the floor of the bearing housing and the ground soil is especially evident in the coldest winter period. The cowshed floor and surrounding soil temperature measurements showed that the soil temperature field is in a constant dynamic state. The heat transfer, occurring between the outside of the building and the soil under the building as well as at the floor installed over them, is influenced by the external temperature regime.

The aim of the study is to identify and describe community development approaches particularly emphasizing community-led local development as it dominates in the European Union as part of the rural development policy. The research is based on the literature review on community development approaches and community involvement in rural development. The most frequently used approaches are the following: community-led local development, community-led development, community driven development, community capacity building asset-based community development, and community economic development. The author concludes that the involvement of communities in development processes is promoted through specific programs implemented by policy makers and initiatives by communities and non-governmental organizations. Community involvement in development is influenced by many factors, such as democratic traditions and societal experience, the distribution of power and the exchange of knowledge between the social agents involved in development processes, the availability of resources and the skills to use them. Community projects are another way in which local agents can participate in improving the quality of life and solving local problems.

In order to be innovative in a rural area, it is necessary to act in an extraordinarily cooperative fashion, partly because the people living there know each other well, but also because they want to remain there, share their lives with the neighbours and do not simply change homes to start fresh in another part of town, as it happens in larger cities. The appropriate support of informational management regarding cooperative behaviour is in the focus of this paper. Our selection of research methods includes the execution of study projects to the subjects of innovation, It- and Information Management for an cooperative network, the development of an app to encourage young people to stay in the pertaining village, to the publishing of four books concerning communication and cooperation on the basis of original research, surveys, discussions with residents, meetings with the management of small enterprises as well as with the administration and colleagues of universities and the evaluation of the collected data through statistical methods and processes. We have found that the introduction of regular meetings of a variety of people with the task to think about new ideas and to decide on which one will be realized first, to give support in different ways before, during and after the project conclusion in combination with suitable Information Management is able to reduce the fear of digitalization and bind the focused power of concentration to the project. In conclusion we find that it is possible to augment the communal mind set to be innovative and creative in order to make rural living more pleasant.

The research paper discusses the growing importance of rural tourism and community based development as a means of sustainable regional development. Growing number of international visitors in Georgia, as well as high agriculture dependence of local population, requires the Government to have a clear long-term strategic vision for tourism and rural development policies. Understanding of the local community role in the sustainable tourism development will enhance the decentralization processes. Experience of developed countries like Italy and German, Check republic, New Zealand, etc. shows that in the wake of the emergence of rural tourism, many countries changed and harmonized policies that reflected modification in national regulations and development strategies. The Georgia’s favorable climate and soil have historically shaped agriculture one of its most productive economic sectors. Nevertheless, nowadays the sector does not provide favorable economic benefits to the local population. As a promising component, research paper identifies rural tourism as a central stimulator for agriculture sector adding strength to a traditional poor rural economy. Analysis of various existing policy initiatives in Georgia shows urgent need for harmonization of policy documents and local community involvement.

Sewage sludge is a rest product deriving from the wastewater treatment plants. It is rich in nutrients and essential elements. Therefore sludge on-land utilisation can create an added value by recovering energy from biomass produced on marginal lands. However, widespread on-land recycling of sewage sludge might be limited due to high heavy metal content. Health organisations show an increasing concern about the risks posed to the environment and human health as many countries worldwide already are facing the heavy metal contamination problem. In the scientific literature it can be found, that high total heavy metal content is not directly related to an intensive metal uptake by plants. In this study samples were collected from three woody plant species (black locust, silver birch and aspen) growing directly on the sewage sludge in a storage site near Kaunas, Lithuania. Heavy metal content was detected separately in the leaves, stems and roots. It was determined that nearly all analysed heavy metals (lead, chromium, nickel, copper and zinc) were accumulated within normal range despite high total concentrations in the growing media, and only cadmium was accumulated at elevated concentration. Based on bioaccumulation factor, aspen could be considered as a Cd-accumulator and used for phytoremediation purposes.

By overviewing the developmental trends of Lithuanian cities, rapid growth in the urbanization of smaller suburb areas is observed. The aim of the research is to determine the factors impacting the urbanization of rural areas. The built-up areas of Kaunas district municipality and factors impacting their distribution are the object of this research. The largest built-up areas are in the subdistricts where cities are deployed as well as in subdistricts having the best living and recreational circumstances. When conducting the research, factors impacting the distribution of the built-up areas have been analysed.In Kaunas district municipality, beneficial circumstances for the urbanization development exist since the population growth in the last 7 years corresponds to the optimistic scenarios projected in the general plan. It has been determined that 3 factors have the greatest impact on the built-up areas: the area of the subdistrict itself, the distance to the centre of the region and the market value of the land.

Concrete is one of the most popular construction materials in the world. The concrete properties depend from many factors. One of them is aggregates quality, which can be defined as an impurity level. The most unwanted materials in fine aggregates are clay and soil particles. These particles can impure aggregates due to irregular sands in quarry and during the digging process. In the present paper were estimated how impurity impact the properties of concrete. During the research the aggregates were impured with clay and soil particles. The change of fresh concrete workability, hardened concrete density, compression strength, water absorbability and frost resistance were evaluated. The results show that aggregates impurity with clay and especially with organic materials (soil) is very dangerous. The concrete workability, frost resistance is decreasing. The clay and soil have a different effect on hardened concrete density and compression strength. Soil decreased both parameters while well mixed clay increased these characteristics. However, generalizing all results, can be stated, that keeping the same level of concrete workability it is necessary to raise water and cement ratio and it will give strength loss effect.

Potato (Solanum tuberosum L.) is mostly suitable for growing in moderate climate conditions at temperature 20 ° C. Yields are influenced by many factors: soil characterization, available nutrients, distribution of pests and weeds, agrotechnology, genotype or variety and climatic conditions during the vegetation period. In recent years summary of meteorological conditions (precipitation and air temperature), showed that stressful conditions during the vegetation period had a diverse influence on the growth and development of plants.  Excess or lack of humidity in soil or drought and heat affected the size and shape of the potato tubers. The heat stress is the problem of agriculture in many regions of the world in the last years. The aim of the study was to evaluate cultivars and clones from the breeding material under the stress conditions at the Stende Research Centre. The field trials were set up due to project of the Latvian Ministry of Agriculture: "Evaluation of breeding material to implement integrated and organic agriculture crop production technologies"(2015-2018). The article summarizes results of nine potato clones and nine varieties in both integrated and organic systems during 2017-2018, when 2018 was one of the driest and hottest in the last 100 years. The evaluation of the varieties and breeding material phenological phases in two years showed that germination and flowering differed from year to year.  Due to hot and dry weather conditions flowering was weak for several varieties and the bud flowering was observed. In 2018 germination for some varieties was slower compared to the previous year, but for many varieties (‘Lenora’, ‘Prelma’, ‘Imanta’) and breeding material germination was not delayed (Table 1). The earlyest germination and flowering were observed for variety 'Monta'. Earlier germination compared to other varieties and clones was recorded to S01085-21 and S03067-33 and the variety ‘Rigonda’.  In the organic field earlier germination was observed for the varieties 'Rigonda', 'Monta', 'Prelma' and clones S01085-21, S07169 -35. The yield of varieties and breeding material lines in both years was good but still lower tuber yields were obtained in the integrated growing system and only one line (S01085-21) and variete ‘Gundega’ had significantly higher yield in comparison 2017. In the organic growing system tuber yields of all varieties and breeding material lines were significantly lower than the 2017 year. Yield reduction is not significant for 3 breeding material lines: S10063-128, 19922.29 and S2008-6.5.

Since 1999, a long-term field experiment has been done at the Experimental Station of Vytautas Magnus University (former Aleksandras Stulginskis University) at 54º52′50 N latitude and 23º49′41 E longitude. The soil of the experiment site is Epieutric Endocalcaric Endogleyic Planosol (Endoclayic, Aric, Drainic, Humic, Episiltic) according to WRB (2014). The objective of our investigations was to assess the long-term impact of reduced intensity tillage systems, straw and green manure combinations on productivity and economical evaluation. A short crop rotation was introduced: winter wheat, spring barley, spring rape. The results were obtained in 2000-2017. Sustainable agroecosystems are able to maintain their condition, productivity and biodiversity, as well as their integrity over time and in the context of human activity and use. The sustainability of agroecosystems is inseparable from the stability of their productivity. In order to illustrate this, we estimated crop productivity differences % from the year 2000 to 2017. In terms of crop productivity, all the tested long-term complex measures of different intensities were similar, both when comparing with average productivity that year and when estimating cumulative differences com-pared with deep ploughing.