The paper reports on annual pine increment dynamics during the period of last 30 years in the Vesetnieki Station of Permanent Ecological Research with a different drainage level: transitional bog, tree stand between the drainage ditches, tree stand adjacent to ditch. The increment of basal area of annual rings has been found to be considerably higher in the site adjacent to ditch with the most intensive drainage level. The increment of annual rings of individual trees proved to be non-synchronic, therefore trees can be suggested to have different response to have different response to the influence of the same meteorological factors (amount of precipitation, for example). The annual increment data for the last four years (1997-2000) have been compared to the results of biogenous substance circulation measurements during the given period.

More and more people looking for healthy foods. Because researchers in nourishment to look for new possibilities in breadmaking. One of the possibilities is to substitute wheat flour by oat or buckwheat flour in bread products. Bread quality is characterized by sensory properties: taste, smell, flavour and texture. Hardiness, elasticity and gumminess are important indices of bread texture. The purpose of our work is to determine the changes in the bread texture of mix flour sample. Samples were prepared to substitute wheat at 10% and 15% or by at 10% and 25%. The wheat flour was used as a control. The experiments were made in the pilot Laboratory of I.A.T.A. in Spain, using AACC methods. Output data show that substitution buckwheat flour has improved the texture of bread, but substitution of oat flour has impaired the properties of texture.

The study deals with the rural landscape management in Latvia and presents a survey of the current situation in landscape planning and nature protection. It also gives a brief theoretical description of the landscape concept and its development and management. Impact of agriculture, forestry and rural tourism on landscape is analysed through the view on the state politics in these spheres. The author evaluates current situation in environmental politics, informs about environmental law, nature protection and preservation system and spatial planning. The author also draws conslusions and offers her suggestions how to improve the landscape management system basing on comparison between the current situation in landscape management and goals set by the national environment conservation plan (1995).

Salmon (Salmo salar L.) is grown and released in the estuaries in Latvia from which it goes to the feeding areas in the Baltic Sea. The research summaries data about clinical characteristics of fin necrosis and its prevalence in Latvian hatcheries before the smolt stage (complicated physiological, biochemical and morphophysiological changes resulting in migration flight). Clinically expressed fin necrosis was observed in 92.7-97.4% cases.

Spring barley grain of the new registered Lithuanian variety 'Alsa' and German malty variety 'Otis' cultivation, the influence of different rates of nitrogen fertilisers and fungicide Tango on their yield and quality was investigated in the Rumokai Research Station of the Lithuanian Institute of Agriculture in 1998-2000. It was established that nitrogenous fertilisers have been increasing grain yield in the spring barley 'Alsa' every year. The influence of nitrogen fertiliser was negative on the spring barley 'Otis' only for the 1998 yield due to meteorological conditions, that were favourable for spreading leaf diseases. Fungicide Tango gave a reliable yield increase - from 0,21 to 1,14 t ha*[-1) - through the whole investigation period. The amount of proteins in grains was reliably increasing due to nitrogenous fertilisers within all the years of investigation, excluding the year 1999. Meteorological conditions made a great influence on protein amount in 1999. No reliable interaction was established between nitrogenous fertilisers, grain size and starch. Medium or strong negative correlation was observed between the grain size and proteins (correlation coefficient was deviating from 0,40 to 0,81). A reliable positive correlative relation was established between starch and grain size in 1998 only.

The algorithm is designed to improve the production of power lines, to forecast emergency situations and to recognize possible ecological risks.

The article deals with the regeneration process of water resources capacity of the wells in the Baltezers region using mechanical and chemical treatment. The methods of this treatment process are described in detail.

The general purpose was to study productivity of organic grasslands and compare it with productivity at a conventional farm under the same or similar climatic and pedologic conditions. The investigation was based on field experiments that were carried out in 5 different regions of Estonia in 2000. In the current research, the DM-yield of sward (on 4 research plots of 5 square m), the botanical composition, soil pHKCL and humus content (by Tjurin) were measured. Also the content of soluble plant nutrients P and K were measured by DL-(Egner-Riehm) method and Ca and Mg- by AL- (ammonium acetate extraction) method.

In majority of cases, a positive effect can be observed upon application of Laser Agnis-L01 in treatment regimen of bone fractures. Positive effect of the laser was observed in 66.7%, no change in 22.2% and negative effect in 11.1% of the rabbits in experiment. To accelerate healing of bone fractures, we recommended the following parameters in treatment regimen with Agnis L01: impulse power 1.5 W, impulse frequency 250 Hz, modulation frequency 50 Hz and duration of treatment episode 240 seconds, 5 squares of treatment, 1 dosage per day, 10 treatment episodes. The treatment should start from day 4 after occurrence of fracture. Efficacy of laser treatment depends on individual properties of animal. Treatment of bone fractures is complex, laser treatment could be an element of the treatment regimen.