Yields and quality of silage maize hybrids grown under different climatic conditions
The group of C4 plants (that involves also maize) is characterised by a temperature optimum necessary for the course of their photosynthesis that rangesg from 28 °C to 32 °C. The group of C3 plants (that occur predominantly in the temperate climatic zone) requires a temperature optimum that ranges from 18 °C to 23 °C. C4 plants are considered to be more productive because, under favourable conditions, both their rate of photosynthesis and production of biomass are higher by 20 to 50 percent than those of C3 plants. In plants, biomass production is influenced (and limited) not only by the temperature but also by many other pedo-climatic factors. The availability of water is one of these important factors. Plants respond to the water deficit by a decrease in the transpiration rate and this decrease is usually associated with a decrease in the rate of biomass production and, thus, in lower yields. Just in some of those parts of the Czech Republic where maize is one of important crops, there is a lack of water because of too high temperatures and too low precipitations occurring in the course of the growing season. This paper deals with the effect of water deficits on yields and quality of silage of some selected maize hybrids.
|Projekt||Inovovat systémy hodnocení kvality krmiv s důrazem na zavedení nového národního systému hodnocení|
|Oddělení||Výživa a krmení hospodářských zvířat|
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