Ustredni kontrolni a zkusebni ustav zemedelsky

Prague, Czech Republic

Ustredni kontrolni a zkusebni ustav zemedelsky

Prague, Czech Republic
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Fiala P.,Ustredni kontrolni a zkusebni ustav zemedelsky | Reininger D.,Ustredni kontrolni a zkusebni ustav zemedelsky | Samek T.,Ustredni kontrolni a zkusebni ustav zemedelsky
Zpravy Lesnickeho Vyzkumu | Year: 2017

The object of the study is to compare chemical properties of forest sites being limed in 2004 with the ones in their vicinity, which were not limed. The forests in the investigated area are supposed to have been affected by air pollution. Three soil horizons were sampled. The value of pH, amount of organic material, total soil nitrogen, oxidizable soil carbon and extractable contents of chosen elements (P, K, Ca, Al, Mn and Fe) were determined in the forest floor horizon. The same characteristic supplemented by values of plant accessible elements (P, K, Ca, Mg, Al, Mn, Fe, S) and the investigation of soil sorption complex ((Al + H)+, K+, Ca2+, Mg2+, Mn2+, Al3+, Fe3+, CEC, BS) were carried out in the organomineral and mineral horizons. The investigation of contents of chosen elements (N, P, K, Ca, Mg, Mn, Al, Fe, B, S) in the Norway spruce needles was done to evaluate the difference in the nutritional level on the compared sites. For this purpose, the needles of current and previous year were investigated. The statistical processing focused on the characteristics, which are supposed to have been induced by forest liming performed ten years ago. This study reveals that soils of the limed sites were richer and healthier than of the unlimed ones and that the trees on the limed sites were in better nutritional conditions.


Hakaufova L.,Ustredni kontrolni a zkusebni ustav zemedelsky
Listy Cukrovarnicke a Reparske | Year: 2010

In 2010, the Central Institute for Supervising and Testing in Agriculture registered 13 new varieties (there had been almost 60 before) of sugar beet into the National Variety Book (7 varieties with Rhizomania tolerance, 5 with tolerance to Nematodes, and one with Rhizoctonia tolerance). Three varieties were registered after three years of testing, the other ten varieties after only two years. In 2009, 69 varieties entered the testing for registration, out of which 43 into the first year. The number of varieties with a special tolerance to Nematodes increased. The experiments are run in two systems of growing: with and without fungicide treatment. The registration of the varieties is based on the results achieved (according to the overall Index indicator).


Fiala P.,Ustredni Kontrolni a Zkusebni Ustav Zemedelsky | Reininger D.,Ustredni Kontrolni a Zkusebni Ustav Zemedelsky | Samek T.,Ustredni Kontrolni a Zkusebni Ustav Zemedelsky | Maly S.,Ustredni Kontrolni a Zkusebni Ustav Zemedelsky
Zpravy Lesnickeho Vyzkumu | Year: 2015

This paper summarizes the knowledge gained during afive-year survey of the microbiological properties of forest soils in the Czech Republic. This aimed to characterize undamaged forest communities with regard to species composition, vegetation zones and soil chemical reactions. The holorganic forest soil F-horizon and H-horizon and the organo-mineral horizon were the object of study and their microbial properties were given to be distinctive to the spruce or beech forest management units of the production forests. The type of the study, with regard to the management units, seems to be the only practicable way giving the useful results. Today, the set of analytic entries is sufficient to give the representative characteristic of forest stands of spruce and beech. The spruce stands are characteristic with the higher volume of carbon oxidizable (Cox) and total carbon (Ctot), and the beech stands with the higher volume of carbon of microbial biomass and the higher microbial activity. The spruce stands are typical with the higher activity of fosfomonoesterase, α-glucosidase and β-xylosidase in some horizons, and there is the higher activity of urease, chitinase and arylsulfatase in the beech stands. The results give asnapshot of selected characteristics (levels of carbon, nitrogen, phosphorus and organic material), soil activity (basal respiration and substrate-induced respiration rates, specific growth rates and anaerobic N mineralization) and enzyme activity (urease, chitinase, fosfatase, β-glycosidase, arylsulfatese and β-xylosidase).


Hakaufova L.,Ustredni kontrolni a zkusebni ustav zemedelsky
Listy Cukrovarnicke a Reparske | Year: 2011

In 2011, the Central Institute for Supervising and Testing in Agriculture will newly register 9 sugar beet varieties: 6 traditional a 3 with special tolerance. For registration after three years of testing, it is necessary to achieve the index value of at least 102.0 (in at least one variant). Registration after two years of testing (in both traditional and special varieties) is conditioned by maintaining the index value at at least 102.0 during both of the years in the same variety. The experiments are made in two systems of growing: with and without fungicide treatment. The treatment is made, according to the methodology, in three terms. In some of the localities where testing for registration was made, the yield in 2010 was as high as 90 tons per hectare and sugar content about 20%.


Hakaufova L.,Ustredni kontrolni a zkusebni ustav zemedelsky
Listy Cukrovarnicke a Reparske | Year: 2015

Based on the results of registration tests 14 new sugar beet varieties will be entered into the Czech Directory of Varieties in 2015; 10 varieties are standard and 4 are immune to beet-cyst nematode. To get registered it is necessary to reach an overall indicator "index" of min. 101.5 in at least one system of cultivation after three years of testing; after two years of testing in case of standard varieties as well as the ones immune to beet-cyst nematode, the index must be min. 102.0 in both the test-years in the same variety. The tests were based in seven localities and on two systems of cultivation: with and without fungicidal treatment. Average yields reached cc 86 t ha-1 and average sugar content cc 18%. © 2015, Listy Cukrovarnicke a Reparske. All rights reserved.


Hakaufova L.,Ustredni kontrolni a zkusebni ustav zemedelsky
Listy Cukrovarnicke a Reparske | Year: 2012

The tests were based in six localities and on two systems of cultivation; with and without fungicidal treatment. The treatment is realized in three terms in compliance with the methodology. Yields in some localities reached almost 100 t.ha-1 and average sugar content 18%. Six new varieties will be entered into the Czech Directory of Varieties; five are standard and one is immune to beet-cyst nematode. To be registered it is necessary to reach an index of min. 101.5 at least in one system of cultivation after three years of testing; in two-year testing of standard varieties as well as the ones immune to beet-cyst nematode, the index must be min. 102.0 after both the test-years in the same variety.

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