scholarly journals Cytoplasmic male sterility as a biological confinement tool for maize coexistence: optimization of pollinator spatial arrangement  

2017 ◽  
Vol 63 (No. 4) ◽  
pp. 145-151
Author(s):  
Bückmann Heidrun ◽  
Capellades Gemma ◽  
Hamouzová Kateřina ◽  
Holec Josef ◽  
Soukup Josef ◽  
...  
Keyword(s):  
Czech Republic ◽  
Cytoplasmic Male Sterility ◽  
Male Sterility ◽  
Spatial Arrangement ◽  
Agricultural Practice ◽  
Lower Yield ◽  
The Czech Republic ◽  
Maize Cultivar ◽  
Isolation Distances ◽  
Conventional Systems

Cytoplasmic male sterility (CMS) allows efficient biological confinement of transgenes if pollen-mediated gene flow has to be reduced or eliminated. For introduction of CMS maize in agricultural practice, sufficient yields comparable with conventional systems should be achieved. The plus-cultivar-system in maize offers a possibility for biological confinement together with high and stable yields whereas pollinator amount and distribution within the CMS crop is crucial. The aim of this EU-funded study was to identify the best proportion (10, 15, and 20%) and spatial arrangement (inserted rows, mixed seeds) of the pollinator within the CMS maize cultivar under field conditions in the Czech Republic, in Germany and in Spain. In Germany and in the Czech Republic, a pollinator proportion of 10% produced significantly lower yield than the treatments with a pollinator proportion of 15% and 20%. Differences in yield between row and mix arrangements were not detected. No differences between the tested arrangements occurred in Spain. With respect to practical conditions, a pollinator proportion of 15% can be recommended for achieving a satisfactory yield. CMS maize cultivar released no or merely a small amount of pollen and self-pollinated plants developed no or only a small number of kernels indicating that currently recommended isolation distances between genetically modified (GM) and non-GM fields can be substantially shortened if the CMS confinement tool is used.  

scholarly journals Water Erosion Reduction Using Different Soil Tillage Approaches for Maize (Zea mays L.) in the Czech Republic

Land ◽  
2020 ◽  
Vol 9 (10) ◽  
pp. 358
Author(s):  
Ladislav Menšík ◽  
David Kincl ◽  
Pavel Nerušil ◽  
Jan Srbek ◽  
Lukáš Hlisnikovský ◽  
...  
Keyword(s):  
Czech Republic ◽  
Agricultural Land ◽  
Higher Plants ◽  
Forage Quality ◽  
Dry Mass ◽  
Water Erosion ◽  
Soil Tillage ◽  
Soil Conditions ◽  
Agricultural Practice ◽  
The Czech Republic

In today’s agriculture, maize is considered to be one of the major feed, food and industrial crops. Cultivation of maize by inappropriate agricultural practices and on unsuitable sites is connected with specific risks of soil degradation, mainly due to water erosion of the soil. The aim of this study was to evaluate the yielding parameters, fodder quality and anti-erosion efficiency of different methods of conservation tillage for maize in two areas (Jevíčko—JEV and Skoupý—SKO) with different climate and soil conditions in the Czech Republic in the period 2016–2018, using multivariate exploratory techniques such as principal component analysis (PCA) and factor analysis (FA). Four variants of soil tillage methods were analysed: Conventional Tillage (CT), two slightly different Strip-Till techniques (ST) and Direct Sowing (DS). The analysed parameters were: dry mass of the plants, height of the plants, starch content (SC), organic matter digestibility (OMD) and content of neutral detergent fibre (NDF), soil loss by erosion and surface runoff. The multivariate exploratory techniques PCA and FA significantly differed in two categories of techniques in both locations. The first category consists of soil conservation techniques (SCT): ST (JEV/SKO) and DS (JEV). These techniques are characterised by lower yields of dry mass, lower height of plants, forage quality equal to CT, but a high level of protection of the soil against erosion. The second category consists of CT (JEV and SKO) and partially of DS (SKO). These treatments are characterised by high dry mass production, higher plants, high forage quality, but a feeble capacity of protection of the soil against erosion. The results of the study confirm the presumption of the positive influence of introduction and application of new agronomical practices in the areas of interest and other areas with similar natural conditions in the sense of sustainable management for agricultural management of agricultural land for the conditions of the Czech Republic and therefore of Central and Eastern Europe. PCA and FA were used as an effective method for comprehensive evaluation of the use of STC in agricultural practice.

scholarly journals Fusarium mycotoxin content and Fusarium species presence in Czech organic and conventional wheat

2021 ◽  
pp. 1-12
Author(s):  
I. Polišenská ◽  
O. Jirsa ◽  
J. Salava ◽  
I. Sedláčková ◽  
J. Frydrych
Keyword(s):  
Czech Republic ◽  
Fusarium Species ◽  
Fusarium Culmorum ◽  
Farming System ◽  
Agricultural Practice ◽  
The Czech Republic ◽  
Mycotoxin Contamination ◽  
Preceding Crop ◽  
Organic Farming System ◽  
Harvest Year

Deoxynivalenol and zearalenone content and the presence of Fusarium species in organically and conventionally grown wheat harvested in the Czech Republic during 2015-2017 were studied. Mycotoxin contamination was compared using two approaches. The first was based on samples taken from randomly selected farms in individual regions of the Czech Republic, both organic (154 samples) and conventional (330 samples). In the second approach, a sample set of conventional wheat compatible with organic one was formed, with samples paired according to the preceding crop and region of harvest. Using the first approach, mycotoxins were shown to be higher in conventional wheat; however, there was no difference in mycotoxin contamination between organic and conventional wheat using the second approach. Eight wheat samples with mycotoxin content above the EU limits were found, seven for deoxynivalenol (2.1%) and one for zearalenone (0.3%), all of them originated from conventional farming system. Six of them had maize as the preceding crop. The presence of five Fusarium species (Fusarium avenaceum, Fusarium culmorum, Fusarium graminearum, Fusarium poae and Fusarium sporotrichioides) was compared for the compatible wheat sample sets (second approach). The predominant species were found to be F. poae and F. graminearum in both the organic and conventional wheat. Harvest year significantly influenced both the occurrence of the main Fusarium species and the level of mycotoxin contamination. The study confirmed that (a) organic farming system was able to keep mycotoxin contamination of wheat at a low level, (b) in studies on the significance of organic/conventional agricultural practice on mycotoxin levels in cereals, it is important to pay attention to common production and environmental variables.

scholarly journals Can Miscanthus Fulfill Its Expectations as an Energy Biomass Source in the Current Conditions of the Czech Republic?—Potentials and Barriers

Agriculture ◽  
2021 ◽  
Vol 11 (1) ◽  
pp. 40
Author(s):  
Jan Weger ◽  
Jaroslav Knápek ◽  
Jaroslav Bubeník ◽  
Kamila Vávrová ◽  
Zdeněk Strašil
Keyword(s):  
Climate Change ◽  
Czech Republic ◽  
Field Experiments ◽  
Energy Crop ◽  
Primary Data ◽  
Agricultural Practice ◽  
The Czech Republic ◽  
Miscanthus Giganteus ◽  
New Energy ◽  
Good Potential

Our article analyzes the main biological potentials and economic barriers of using Miscanthus as a new energy crop in agricultural practice in the Czech Republic and the Central-Eastern European region. We have used primary data from long-term field experiments and commercial plantations to create production and economic models that also include an analysis of competitive ability with conventional crops. Our results showed that current economic conditions favor annual crops over Miscanthus (for energy biomass) and that this new crop shows very good adaptation to the effects of climate change. Selected clones of Miscanthus × giganteus reached high biomass yields between 15–17 t DM ha−1 y−1 despite very dry and warm periods and low-input agrotechnology, and they have good potential to become important biomass crops for future bioenergy and the bioeconomy. Key barriers and factors are identified, including gene pool and agronomy improvement, change of subsidy policy (Common agriculture policy-CAP), climate change trends, and further development of the bioeconomy.

scholarly journals New Approach to Sustainability in Rural Areas Comprising Agriculture Practices–Analysis of Demonstration Farms in the Czech Republic

2019 ◽  
Vol 11 (10) ◽  
pp. 2906 ◽  
Author(s):  
Milada Šťastná ◽  
Veronika Peřinková ◽  
Pavla Pokorná ◽  
Antonín Vaishar
Keyword(s):  
Czech Republic ◽  
Rural Areas ◽  
Crop Production ◽  
Animal Health ◽  
Arable Land ◽  
Survey Method ◽  
Soil Protection ◽  
Agricultural Practice ◽  
Sustainable Farming ◽  
The Czech Republic

The research was aimed at an overview and analysis of the demonstration activities in the Czech Republic dealing with the transfer of innovations for agricultural practice. Several methods were used to compile the national inventory, in particular the questionnaire survey method. The Czech part of the research was based on 30 questionnaires conducted among both farmers and agricultural organizations engaged in demonstration activities. The questions were focused on a specialization in agriculture, type of the management, connections with networks and their size, types of demonstration activities according to the types of farms and non-productive activities. The most common topics and purposes for demonstration in the Czech Republic are recorded for the category arable land with combined crops. Highly linked to sustainability are activities such as conservation agriculture on arable land with combined crops, root crops and fodders mainly due to a reduction of soil erosion within crop production and animal health management and welfare for dairy within livestock production. The Ministry of Agriculture has prepared a subsidy program to help farmers in the form of illustrative practical demonstrations of comprehensive sustainable farming practices. The main added values for the end-users, if the generated knowledge is implemented, are to strengthen the knowledge transfer system in agriculture, focusing on practical demonstrations and presentation of sustainable farming systems and soil protection in practice. However, the demonstration activities support mostly technological development and some individual ecological measures whereas the sustainability of agriculture as the complex process unifying the crop and animal production is not in the foreground.

scholarly journals Legal Framework for Cooperation of Municipalities in the Conditions of the Czech Republic

Auspicia ◽  
2021 ◽  
Vol XVIII (1) ◽  
pp. 52-64
Keyword(s):  
Czech Republic ◽  
Interest Groups ◽  
Spatial Arrangement ◽  
Legal Framework ◽  
Legal Form ◽  
The Czech Republic ◽  
Fragmented Structure ◽  
Private And Public ◽  
Legislative Changes ◽  
The Eu

In 1990, there was a "renewal" of local self-government in the Czech Republic and other legislative changes took place that strengthened the powers of municipalities and allowed them to develop completely new forms and ways of cooperation, such as microregions, joint participation in business corporations and interest groups of legal entities (associations), etc. The activities of the Union of Towns and Municipalities of the Czech Republic were also renewed. The entire 1990s are marked by the emergence of new regional and national cooperation structures, with further acceleration coming in connection with the accession of the Czech Republic to the EU in 2004. Late 2010s are connected with strengthening relations between the private and public sectors, or with the division of existing forms of cooperation, due to which municipalities now have a fragmented structure of more than 20 possible ways of cooperation with other municipalities. However, in individual areas of the Czech Republic, this cooperation has different intensity, spatial arrangement and, of course, also different legal form, the historical genesis of which is mapped in this paper.

Social variation in size at birth and preterm delivery in the Czech Republic and Sweden, 1989-91

1998 ◽  
Vol 12 (1) ◽  
pp. 7-24 ◽  
Author(s):  
Koupilova ◽  
Vagero ◽  
Leon ◽  
Pikhart ◽  
Prikazsky ◽  
...  
Keyword(s):  
Czech Republic ◽  
Preterm Delivery ◽  
The Czech Republic ◽  
Social Variation ◽  
Size At Birth

On Geropsychology in the Czech Republic

GeroPsych ◽  
2012 ◽  
Vol 25 (3) ◽  
pp. 161-166
Author(s):  
Hana Stepankova ◽  
Eva Jarolimova ◽  
Eva Dragomirecka ◽  
Irena Sobotkova ◽  
Lenka Sulova ◽  
...  
Keyword(s):  
Czech Republic ◽  
Clinical Practice ◽  
Old Age ◽  
Cognitive Rehabilitation ◽  
The Czech Republic ◽  
Rehabilitation Research

This work provides an overview of psychology of aging and old age in the Czech Republic. Historical roots as well as recent activities are listed including clinical practice, cognitive rehabilitation, research, and the teaching of geropsychology.

Contemporary Psychology in the Czech Republic

2000 ◽  
Vol 5 (1) ◽  
pp. 62-65 ◽  
Author(s):  
Jiří Hoskovec ◽  
Josef M. Brožek
Keyword(s):  
Czech Republic ◽  
The Czech Republic
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