H. M. Adam Abubaker, Adam Hassam Mohamed Abdalla, M. A. Magid Faiza, Eldeen Z. Abakar Bahar, M. A. Mohamed Mohamed, A. M. Al badawi Annas, Response of Some Sunflower (Helianthus annuusL) Hybrid Cultivars as Influenced by Argel (Solenostemmaargel, Del. Hayne) and Nitrogen Under Irrigation in Sudan, Journal of Agronomy and Research, Volume 3, Issue 1, 2020, Pages 32-45, ISSN 2639-3166, https://doi.org/10.14302/issn.2639-3166.jar-20-3388. (https://openaccesspub.orgjar/article/1385) Keywords: Leaf Area Index; Treatment; Observation; Design; Parameters