Control of dicotyledonous weeds in spring barley
1995
Vanova, M. | Spitzer, T. | Klem, K. (Vyzkumny Ustav Obilnarsky, Kromeriz (Czech Republic))
Agronomic and cropping practices for spring barley play a considerable role in consequent decision of using herbicides and their rates applied against dicotyledons in spring barley. Spring barley could suppress dicotyledons effectively; in a lot of cases, an application of herbicides was not effective because no significant influence on the yield was found. Crop density plays an important role. At adequate crop densities (750 to 850 ears.m-2), weeds are supposed to wither away in the shade and other ones will not emerge. Even in trials where a number of weeds at the beginning of the growing season was quite high and exceeded threshold values, only a low or no yield increase was observed after herbicide application. Mostly, herbicide rates applied to spring barley can be much lower than those applied to winter wheat. For good competitive ability the soil has to be well prepared in both the autumn and spring season. A sufficient amount of air in the soil is very important for a weak root system of spring barley and together with early sowing secure rapid germination and growth
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