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Field experiment with winter oilseed rape cultivation was carried out in 2007-2009. The subject of this study was analysis of weed infestation of winter oilseed rape canopy and seed yield depending on the rate of soil NPK fertilization and foliar application (autumn spraying with solution): 100% and 75% NPK and urea + nickel chelate + MgSO₄H₂O; 100% and 75% NPK, as well as urea + Plonvit R + MgSO₄H₂O)...
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