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Sunflower (Helianthus annuus L.) is an important energy plant, but the yields of crops grown in rotation with sunflower may be reduced due to its residues phytotoxicity. A 2-years field study was conducted to determine the productivity and extract phytotoxicity of six sunflower hybrids (Arena PR, PR64E83, Opera PR, Ontil, Faborh and Falcon). The effects of their incorporated in soil residues on lentil...
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