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The conceptual models of drained land usage in Lithuania
2002
Saulys, V. (Lithuanian Inst. of Water Management, Vilainiai, Kedainiai reg. (Lithuania))
Land reclamation is very important in Lithuania: under the climatic conditions of our country it is necessary to drain land. Today approximately 90% of the whole agricultural production are grown in drained land. In this article financial problems of land reclamation works are analysed. Not taking into account our country's financial abilities, the maintenance of land reclamation systems must be done properly, and in time - only then, we will be able to guarantee the best long-lasting functioning of drainage systems, and in the future there will be no greater and it will be unnecessary to do expensive preliminary reconstructions works. The maintenance works of drainage systems may be full-filled properly and in time when increasing the financing for land reclamation works up to the necessary level (any subsidies resources and payments are possible, as well as different labour variants and other alternatives) or reducing the maintained drained areas, so that we could throughly keep on eye on land reclamation systems.
Показать больше [+] Меньше [-]Spread of thrips on winter cereals in Lithuania
2002
Smatas, R. (Lithuanian Inst. of Agriculture, Akademija, Kedainio reg. (Lithuania))
The spread of thrips was observed in winter rye, wheat and triticale crops during the growing season of 2001 at the Lithuanian Institute of Agriculture in Dotnuva. Thrips started to spread in winter cereals of the end of tilling - beginning of stem elongation stage (DC 29-30). In winter rye and triticale the spread of thrips was similar. There were two well-defined peaks of thrips occurrence. The highest incidence of thrips was on winter rye. There were 100% infested stems and 15.4 thrips per infested stem in rye, 90% infested stems and 6.9 thrips per infested stem in triticale and 84% infested stems and 2.9 thrips per infested stem in wheat.
Показать больше [+] Меньше [-][Investment appraisal of agricultural land afforestation]
2002
Zudrags, M. (Latvia Univ. of Agriculture, Jelgava (Latvia))
Today more than 17.5% of agricultural land is abandoned in Latvia. Effective use of this land is essential for rural development planning, as well as growth of national economics. Afforestation is one of alternative uses of abondoned and marginal agricultural land. Requisite investments and management costs are calculated for forest plantations of pine, spruce, birch and aspen. The analysis of investment appraisal is based on several criteria - net present value, internal rate of return, benefit/cost ratio and equivalent annual annuity.
Показать больше [+] Меньше [-][Analysis of implementation of financial statements in agriculture]
2002
Oras, K. (Estonian Agricultural Univ., Tartu (Estonia))
Preconditions for drainage channels to be anew exploited
2002
Lamsodis, R. (Lithuanian Inst. of Water Management, Vilainiai, Kedainiai reg. (Lithuania))
The paper presents some data collected for various purposes on phenomena, which took place in drainage channels. The data shows a certain one-direction trend of development of these phenomena when slopes of channels are covered with woody vegetation: the intensity of sedimentation of channel's bottom slowed down (Fig. 1); cross section area blocked up by snow decreased (Table 1); concentrations of biogenic and organic (BOD) matter did not show the worsening of water quality (Table 2 and 3). In the most channnels the losses of hydraulic conductivity occuring because of woody vegetation are usually compensated by conductivity reserve of a bigger cross section area caused by a rather large depth of subsurface drainage systems.
Показать больше [+] Меньше [-]NEGFRY system for late blight control on potato in Lithuania
2002
Danyte, V. (Lithuanian Inst. of Agriculture, Akademija, Kedainio reg. (Lithuania))
Late blight (Phytophthora infestans) is one of the most serious potato diseases. The light blight forecasting is a very important factor for the protection of potato plants. NEGFRY is a decision support system for scheduling the chemical control of potato late blight. Trials were carried out in 2000-2001 at the Lithuanian Institute of Agriculture (LIA) in Dotnuva in medium early and moderately susceptible to late blight varieties. Ordinary plant protection systems against late blight and different NEGFRY models were compared. Results of two years' investigations show that by using NEGFRY models we can obtain satisfactory protection of potato crop and get higher yield using fewer spray applications.
Показать больше [+] Меньше [-]Spatial variation of temperature in two different types of Estonian loose-housing cowsheds
2002
Poikalainen, V. | Veermaee, I. | Praks, J. (Estonian Agricultural Univ., Tartu (Estonia))
The productivity, health and welfare of cows are considerably influenced by the microclimate of the cowshed in which they live. The present paper deals with the spatial variation in temperature within uninsulated wooden cowshed and cowshed renovated from stanchions into cubicles. The type of the cowshed (uninsulated wooden cubicle cowshed and renovated cowshed made of concrete elements) influences spatial variation of indoor temperature. Greater spatial variation existed in renovated cowsheds, but these remained within the range of cows' temperature comfort zone.
Показать больше [+] Меньше [-]Agroecological evaluation of organic and conventional cropping systems
2002
Guzys, S. | Petrokiene, Z. (Lithuanian Agricultural Univ., Akademija, Kauno reg. (Lithuania). Inst. of Water Management)
During the period 1995-1998, in the western part of Lithuania, the organic and intensive (conventional) cropping systems were compared on small autonomous drainage plots in limed Bathihypogleyi-Albic Luvisols (LVa-gld-w) and Dystri-Endohypogleyic Cambisols (CMg-n-w-dy) as well as non-acid Endocalcari-Endohypogleyic Cambisols (CMa-n-w-can) soils. This paper presents the summarised results of field crop productivity and the factors determining drainage water runoff as well as the migration and balance of elements in the organic and intensive cropping systems.
Показать больше [+] Меньше [-]["Education for All" in the Baltic Sea Countries]
2002
Bruvere, I. (Latvia Univ. of Agriculture, Jelgava (Latvia))
The article gives an insight into the development of the programme "Education for All" and Latvia's participation in the programme within the context of the Baltic Sea sub-region. The programme "Education for All" was agreed upon in 1990 in Jomtien at the World Education Forum, which were attended by representatives from 155 countries, 33 international organizations and 125 NGO. The goals of the programme include ensuring the right to education to all and promoting accessibility to education to everybody. The Dakar Framework for Action adopted at the World Education Forum sets guidelines for the development of the programme in the years 2000-2015.
Показать больше [+] Меньше [-]Nutritive status of soils, biodiversity and yielding ability of leys in Estonian conventional and organic farms
2002
Geherman, V. | Ellermaee, O. (Estonian Agricultural Univ., Tartu (Estonia))
The paper gives a brief overview and describes the main results of comparison research in grassland management of conventional and organic farms. The aim of this study was to assess yielding ability and biodiversity of leys depending on the nutritive status of soil. The investigation based on field experiments that were carried out in several regions of Estonia: Laeaene (West), Harju (North) and Voru (South-East) county in 2001. In the research on the productivity of grass-clover leys of the first harvest year was measured the DM yield and content, the botanical composition of the sward and the concentration of crude protein on grass. The soil pHKCL and content of organic matter were measured, also the content in soil of soluble plant nutrients P, K, Ca and Mg was estimated by AL- (ammonium acetate extraction) method. The soil profiles were described and soils were classified. The dominant soil types in farms of West-Estonia were Calcic Cambisols and in North-Estonian farms Calcic Gleysols, in South-East Haplic Podzols types prevailed.
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