Selected agroclimatic characteristics of climatic regions of the Czech Republic

Kohut, Mojmír; Chuchma, Filip; Hora, Petr

doi:10.2478/v10126-012-0012-9

Cited by 2 publications

(2 citation statements)

References 3 publications

(1 reference statement)

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“…The results suggest an increase of potential evapotranspiration and thus higher susceptibility of agricultural intense areas of southern and central Moravia and central Bohemia to dryness. It corresponded with the results of Kohut et al (2012) which used some agroclimatic characteristics for evaluation of Czech climate development.…”

Section: Introductionsupporting

confidence: 80%

Discrepancy in climatic zoning of the current soil productivity evaluation system

Chuchma

Středová

2015

Contributions to Geophysics and Geodesy

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Pedologic-ecological estimation in the Czech Republic (Central Europe) means determination of land agronomic productivity and its economical pricing and is expressed as a five position numeral code and mapped as iso-lines. The first position of the code is the climatic region representing approximately the same conditions for agricultural plant growth and development. This climatic regionalization was based on the climatic data from 1901–1950. Currently, there is the need to update their existing zoning due to the technological progress of measurement and development of climate models including estimation of future climate. The aim of the paper is (i) to apply actual climatic data to climatic regionalization and (ii) to estimate what climatic conditions are relevant for actually valid climatic regions. The original methodology currently enables us to unequivocally classify only 17% of the entire territory of the Czech Republic (and 18% of Czech agricultural land). A substantial part of the territory does not fit neatly into individual climatic regions. Subsequently the actually valid ranges of climatic characteristics of individual climatic regions were determined. The GIS layers of individual climatic variables computed with data from 1961–2010 were one by one covered by GIS layers of individual climatic regions based on data from 1901–1950. Interval ranges of climatic region variables determined in this way are valid for the period 1961–2010. The upper limit of air temperature sum above 10 °C and annual air temperature in most of the climatic regions was significantly shifted up in 1961–2010. An increase in precipitation is noticeable in wet climatic regions. Moisture certainty in vegetation season and probability of dry vegetation are the most problematic in terms of Estimated Pedologic-Ecological Units (EPEU) climatic zoning. This should be taken into account when fixing the official soil price.

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Section: Introductionsupporting

confidence: 80%

Discrepancy in climatic zoning of the current soil productivity evaluation system

Chuchma

Středová

2015

Contributions to Geophysics and Geodesy

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“…The model is primarily intended for the analysis of cases with a prevailing precipitation deficit. Evapotranspiration is calculated in a daily step using a modified procedure according to the Penman-Montheith algorithms [23][24][25]. The daily data for weather characteristics obtained from a meteorological station located in the experimental orchard were used for calculation of ETc.…”

Section: Layout Of the Orchard And Experimental Irrigation Treatmentsmentioning

confidence: 99%

The Effect of Increasing Irrigation Rates on the Carbon Isotope Discrimination of Apple Leaves

et al. 2023

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13C discrimination (Δ13C) has been used in research as an indicator of water availability in crops; however, few data are available concerning fruit trees. The aim of this study was to examine the effect of irrigation on the Δ13C values of apple leaves. We assumed that Δ13C would increase with irrigation intensity. The Δ13C of apple trees (Malus domestica) cv. ‘Red Jonaprince’ was determined in the years 2019–2022. Leaf samples were collected in spring, in June, at the beginning of the irrigation campaign, and in autumn, in September, following the harvest. The irrigation doses were applied to replenish the water consumption, 0% (ET0), 50% (ET50), 75% (ET75), and 100% (ET100), of the calculated evapotranspiration (ET) levels. In November, the leaves collected from different positions on the shoots were sampled, assuming the Δ13C signature would reflect the changes occurring in the water supply during their growth. The irrigation rates had a significant effect on the Δ13C of the leaves when the data for the spring and summer months were pooled. On average, Δ13C increased from 20.77‰ and 20.73‰ for ET0 and ET50, respectively, to 20.80‰ and 20.95‰ for ET75 and ET100, respectively. When the data obtained for the spring and summer months were analysed separately, the effect of irrigation was weak (p < 0.043). The Δ13C value was always higher for treatment ET100 than treatment ET0, for individual experimental years and terms; however, the differences were minor and mostly insignificant. The leaf position had a strong significant effect on Δ13C; the values gradually decreased from the leaves growing from two-years-old branches (22.50‰) to the youngest leaves growing at the top of the current year’s shoots (21.07‰). This order was similar for all the experimental years. The results of the experiment suggest that 13C discrimination in apples is affected not only by water availability during growth, but also by the use of C absorbed in previous years.

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Selected agroclimatic characteristics of climatic regions of the Czech Republic

Cited by 2 publications

References 3 publications

Discrepancy in climatic zoning of the current soil productivity evaluation system

Discrepancy in climatic zoning of the current soil productivity evaluation system

The Effect of Increasing Irrigation Rates on the Carbon Isotope Discrimination of Apple Leaves

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