Evaluation of change of weed control technology in sugar beet in the last 15 years
Adam Paradowski
sekretariat@iorpib.poznan.plInstytut Ochrony Roślin, Poznań (Poland)
Kazimierz Adamczewski
Instytut Ochrony Roślin, Poznań (Poland)
Abstract
In order to investigate effects of various active ingredients of herbicides for broadleaf weed control (phenmedipham, desmedipham, ethophumesate, chloridazon, chlopyralid, metamitron), field experiments were carried out with sugar beet at the Institute of Plant Protection, Poznań, during the last 15 years. At the beginning, all the herbicides were applied separately, later in mixtures. The original guidelines recommended two sprays: immediately after sowing and not earlier than at the two leaves stage. In the middle 80’s the studies had begun on new ways of the herbicides application. The same active ingredients were investigated at different rates and growth stages. The reduction of the applied doses, in three treatments, prevented phytotoxicity and the weed control was successful during the earliest eight weeks of the crop growing, until soil was covered. The method resulted in remarkable economical profits.
Keywords:
herbicides, methods of weed control, sugar beetReferences
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Authors
Kazimierz AdamczewskiInstytut Ochrony Roślin, Poznań Poland
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