The objective of the current research was to investigate effects of germination on chemical composition of hull-less barley (Hordeum vulgare L. var. nudum Hook. f.), hull-less oat (Avena sativa), rye (Secale spp.), and wheat (Triticum spp.) grains for comparison. All the grains were cleaned, washed, steeped and germinated at temperature 35 ± 2 °C and relative humidity 95 ± 2% for 12, 24, 36, and 48 hours. After germination grains were dried till moisture content 14 ± 2%. Main quality parameters such as starch, proteins, b-glucan (in hull-less barley) and individual sugars were determined in cereals during their steeping and germination. Non-germinated grains were used as a control sample. In the present experiments non-significant protein content increase was observed in the analysed hull-less barley, hull-less oat, rye, and wheat during their germination for 48 hours. Starch content in hull-less barley, wheat and rye grains decreased non-significantly during germination for 24 h; opposite results were obtained for hull-less oat grains, where content of starch decreased by 16.7% after steeping and by 26.4% after germination for 24 h. b-glucan content in hull-less barley grains after germination for 48 h decreased by 20.5%. Non-significant changes were obtained in fructose content in analysed cereal grains during germination for 48 h; it was significantly increased after germination for 24 h and in germination for 48 h. Non-significant sucrose content changes were observed in hull-less barley, rye and wheat grains during germination for 12 h and in hull-less oat grains – for 24 h significantly increasing in future germination for 48 h.

The present work aimed to evaluate the effect of sea buckthorn (Hippophae rhamnoides) extract on Cryptosporidium spp. invasion in calves. Sea buckthorn is a good source of vitamins, carotenoids, organic acids and tannins. It has been reported that it possesses anti-inflammatory effect, as well as anthelmintic and antibacterial activity. Research was conducted in a dairy cattle farm ‘Mežacīruļi’ during April and July 2015. Experimental (n = 10) and control (n = 10) groups of calves were used. The experimental group received a mix of aqueous alcohol sea buckthorn leaf and berry pomace extract, administered with milk, at dose of 5 – 8 mL twice a day for 20 days. The control group received only milk. Samples were analysed with the concentration McMaster technique. The results showed that there is no significant (p is greater than 0.05) difference in the number of oocysts per gram of faeces between the experimental and control groups. It was concluded that the administration of sea buckthorn leaf and berry pomace extract had no effect on Cryptosporidium spp. invasion in calves. Studies will be continued with a higher dose of extract.

The paper presents the comparative analysis of the Kaunas city landscape change during the period between 2010 and 2015. For this analysis, the land fund statistics of the Republic of Lithuania, which had been grouped into a relatively natural and anthropogenic landscape, were used. Landscape change is graphically shown in the figures. Lithuanian and foreign scientific literature and legal acts as well as planning documents were analysed for the fulfilment of the work. The Kaunas city landscape analysis of the current situation was done. During the analysis the Kaunas city statistics were compared with the data of Kaunas County and the Republic of Lithuania. The analysis showed that during the analysed period the Kaunas city natural landscape area relatively increased by 1115.34 ha or 20.42 percent. The largest part of relatively natural landscape consisted of forests – 51.12 percent. During the period between 2010 and 2015, the anthropogenic environmental area increased by 47.33 hectares (2.80 percent.). In the period between the years 2010 and 2015, the Kaunas city anthropogenic landscape decreased by 1.189.41 hectares or 12.23 percent. This phenomenon was affected by the decrease of built-up areas of 1,233.36 hectares, or 14.10 percent. Built-up areas cover the largest part of the Kaunas city anthropogenic landscape – 88.09 percent. The analysis of the planning documents showed that after their implementation the built-up areas would increase, the aesthetic image of recreational environment would improve, the environmental condition would become of a higher quality.

This study is a part of an extensive research of creep development in softwood (Pinus sylvestris) timber beams under natural environmental conditions. Large size test data sample obtained during long-term (approximately one and half year) static loading of timber beams in a four-point bending simulating the real service conditions of roof structures for winter and non-snow period has been processed and results presented. The correlation between creep deformation and its affecting factors, such as span to height ratio of beam, percent of latewood and width of year ring (a growth ring formed during a single year), orientation of year ring segments against main axis of cross section, number of year rings in 1 cm of wood, and density of wood have been analysed and corresponding coefficients of correlation presented. It is concluded that the most significant creep development affecting factor is density of wood. Strong relationship between creep development and width of year ring, number of year rings in 1 cm of wood and density of wood was observed during test. Orientation of year ring segments against the main axis of cross section, amount of latewood and span/depth ratio do not have noteworthy direct influence on creep development in terms of this study. Temperature can be neglected as creep affecting factor in terms of this study but in the moments of sharp raise or fall of temperature, almost immediate effect on creep development was recorded.

This article deals with the use of the service learning method in the study courses of landscape architecture bachelor studies outcomes from a student’s perspective. This kind of research is unique with combining service learning method research and involvement of student’s perspective. The service learning method, which includes both theoretical studies and practical work in the planning of actual territories and communication with the customer, is important for the development of professional competences in the field of landscape architecture. The aim of the research was to state the benefits of students’ professional growth from using this method in the study process. The article summarises the evaluation of the experience of Latvia University of Agriculture landscape architecture studies in cooperation with 3 non-governmental organisations, 8 municipalities and governmental organisations and 4 associations from 2013 to 2016. The research was based on the students’ survey. The students had to answer close-ended questions about the knowledge they had acquired from the projects of different scales. As a result of the survey, it was concluded that the students’ main benefits of professional knowledge are mainly associated with a better understanding of specific features of particular places, which is not always possible within the framework of theoretical studies. The possibility of presenting projects to a real customer, thus improving one’s presentation skills was also positively evaluated.

The information about gardens of the Duchy of Courland in the 17th century is scarce and fragmentary, as part of documents is lost or exported abroad during the war. The time of the Duchy and its baroque gardens is attributed to reign of E. J. Biron in the first half of the 18th century, when impressive palace ensembles were created the help of architects F. B. Rastrelli and S. Jensen, building of summer residences in Rundāle, Vircava, Svēte, Luste. They served as summer amusement gardens or parks. In their arrangement, a compositional connection with the palace, the front courtyard, outbuildings and the garden was sought. These summer residences were located in rural plain areas, thus, the features of natural area - water, floodplains, terrain, nature of plantations and materials were used. The choice of planting materials was influenced by the climatic conditions - harsh winters, short summers, late spring frosts or early autumn frosts. Therefore, in the Duke’s time gardens, there are no delicate plants such as jews, boxwood plants, peach and mandarin fruit trees imported from the Western Europe. The local trees and shrubs, fruit trees, spice plants were used, vegetable beds made. The study examines two of the Duchy’s summer residences at Vircava (Wūrzau) and Svēte (Swethof), the study of which, as already mentioned, is made difficult due to the relatively scarce information.

Due to intensive agricultural activities being developed in Middle Lithuania, the water quality of rivers in this region significantly decreases. Rivers, flowing through the town territory, should provide aesthetic delight to the residents, however, because of pollution, especially at the end of summer; they are usually covered in duckweed and algae layer. The paper presents the change of the main water pollution indicators (BOD7, Ntotal, NH4 -N, NO3 -N, Ptotal, PO4 -P and O2) in Dotnuvele and Smilga streams during 2013 – 2015. The aim of research is to determine the change of the main surface water pollution factors in Dotnuvele and Smilga streams, depending on the meteorological conditions. Data analysis showed that dissolved oxygen, nitrate and total nitrogen concentrations are affected by air temperature: the lower of the air temperature, and the more of these elements were found in the water of the streams, (r = -0.61), (r = -0.83) and (r = -0.64) respectively. An increasing precipitation was also increasing the amount of O2 and NO3 -N in stream’s water, (r = 0.44), (r = 0.49) respectively. Meteorological conditions did not have a significant impact on concentrations of other chemical elements, however, correlation analysis showed that concentrations of BOD7 in streams’ water were increasing as precipitation level was falling (r = 0.41), and PO4 -P – when air temperature was increasing (r = 0.46). It was determined that in every spring the stream’s water quality according to the concentrations of Ntotal and N-NO3 was in a bad or average ecological condition. This was caused by the farming fields from which these streams are collecting drainage water during the spring melt.

Results of various studies show that the most prevailing risk factors on workers of agricultural sector are noise and vibration. These hazards are especially important in transportation and most field works. Results from previous studies show that vibro-acoustic environment in tractors operated in Lithuania usually cannot be attributed as acceptable, but technical solutions implemented by manufacturers had definitely positive influence on working conditions. Noise level reduced from 90 dB(A) (tractors of 1980 – 1990 years of manufacture) to 73 dB(A) (tractors manufactured from year 2000). As renewal of tractors is not sufficient, there is still a large number of old machinery i.e. noise levels might be as high as 92 dB(A) which allows to work safely only one hour per day without personal protection. It was found that values of whole body vibration (WBV) during ploughing operation might be as high as 1.5 m∙sE-2 which excess the vibration limit value of 1.15 m•sE-2, while hand-arm vibration (HAV) did not exceed the vibration action value of 2.5 m•sE-2. Significant effect of tyre pressure was noticed on vibration values measured on driver’s seat. Vibration acceleration values may be reduced to safe 0.5 m•s-2 by selecting appropriate tyre pressure.

In this study, forest type mapping data set taken from UCI (University of California, Irvine) machine learning repository database has been classified using different machine learning algorithms including Multilayer Perceptron, k-NN, J48, Naïve Bayes, Bayes Net and KStar. In this dataset, there are 27 spectral values showing the type of three different forests (Sugi, Hinoki, mixed broadleaf). As the performance measure criteria, the classification accuracy has been used to evaluate the classifier algorithms and then to select the best method. The best classification rates have been obtained 90.43% with MLP, and 89.1013% with k-NN classifier (for k=5). As can be seen from the obtained results, the machine learning algorithms including MLP and k-NN classifier have obtained very promising results in the classification of forest type with 27 spectral features.

Flax (Linum usitatissimum L.) fibre and seeds are widely used to produce healthy and environmentally friendly products. It is known that the main factors that influence flax fibre’ and seeds’ yield are genotype and growing conditions. The main task of the Latvian flax breeding program is to develop flax genotypes that are highly productive (both fibre and seeds) and well adaptable to changing environmental conditions. Goal of this study is to identify high yielding genotypes with good adaptation to local variable agro-ecological conditions. The agronomically important traits, such as yield of stem and seeds, total and technical plant height and fibre content were evaluated for 13 Latvian origin flax lines and standard variety ‘Vega 2’. The field trials have been carried out over the period from 2012 to 2015 at the Agricultural Scientific Centre of Latgale. The regression, correlation, coefficient of variation and cluster analysis between yield and yield provided components were used for identification of high yielding genotypes with good adaptation. On the basis of cluster analysis the genotypes were classified in two groups by lower and higher yield of stem, fibre content, total plant height and technical plant height. The line ‘I18-1’ was identifying as genotype with the highest average yield of stem (751.25 g mE-2) as well as highest yield against other genotypes in moisture and drought years. Most valuable by the average technical plant height was line ‘L26-1’ (73.05 cm).