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Effects of different nitrogen doses and row spacing applications on yield and quality of oenothera biennis L. grown in irrigated lowland and unirrigated dryland conditions
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Common evening primrose (Oenothera biennis L., Onagraceae) is a biennial herbaceous forb. It is commercially cultivated in over 15 countries for its seed oil, which contains the essential fatty acids, linoleic and gamma-linolenic acid.
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