ON THE PROBLEM OF WEEDS AND THEIR CONTROL IN LUCERNE MEDICAGO SATIVA L. | СИСТЕМА ЗА БОРБА С ПЛЕВЕЛИТЕ ПРИ ЛЮЦЕРНАТА MEDICAGO SATIVA L.
2010
Dimitrova, Ts., Institute of Forage Crops, Pleven (Bulgaria)
On the basis of long-term studies conducted in the experimental field of the Institute of Forage Crops Pleven in the conditions of slightly leached medium deep chernozem, the results of weed control in lucerne Medicago sativa L. in the following directions were summarized: preliminary control of perennial weeds, weed control in the year of stand establishment, weed control in established stands, alternative methods for control. Competitive effect of the weeds is manifested in reduction of biological potential of lucerne, in a decrease of duration of its use and deterioration of forage quality. It was found that the successful solution of the weed problem that becomes a general ecological problem at present, is achieved by application of complex scientifically well-ground control, combining cultural practices with reasonable application of the chemical method. Lucerne, leaving the weeds behind it on a controllable level, is a very good preceding crop and its growing in specialized forage crop rotations or in a separate wedge field contributes to a decrease of weed population numbers in the agricultural areas.
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