_____________________________________________________________________________________________________ *Corresponding author: E-mail: houphouet.kouadio@gmail.com; Journal of Experimental Agriculture International 44(5): 48-56, 2022; Article no.JEAI.85490 ISSN: 2457-0591 (Past name: American Journal of Experimental Agriculture, Past ISSN: 2231-0606) Evaluation of the Effectiveness of New Phytosanitary Protection Programs in Cotton Crops Adapted to Jassids Houphouet Kouadio a,b* , Malanno Kouakou b , Kouadio K. N. Bini b , Koffi K. Delphin a,b , Ouattara M. Abdel-Nasser b,c , Béatrice A. Adepo-Gourène a and Ochou G. Ochou b a UFR of Natural Sciences, University Nangui Abrogoua (Formerly Université d’Abobo-Adjamé), Genetics and Bioresources Improvement laboratory, 02 BP 801 Abidjan 02, Côte d’Ivoire. b National Center for Agricultural Research, Cotton Research Station, Entomology Laboratory, 01 BP 633 Bouaké 01, Côte d’Ivoire. c Center for Medical and Veterinary Entomology, Alassane Ouattara University, BP V 18 01 Bouaké, Côte d’Ivoire. Authors’ contributions This work was carried out in collaboration among all authors. All authors read and approved the final manuscript. Article Information DOI: 10.9734/JEAI/2022/v44i530823 Open Peer Review History: This journal follows the Advanced Open Peer Review policy. Identity of the Reviewers, Editor(s) and additional Reviewers, peer review comments, different versions of the manuscript, comments of the editors, etc are available here: https://www.sdiarticle5.com/review-history/85490 Received 27 January 2022 Accepted 31 March 2022 Published 21 April 2022 ABSTRACT In recent years, jassids have become a problem for cotton and the current control program for this pest seems ineffective. This study was therefore initiated with the objective of evaluating the effectiveness of three new phytosanitary protection programs against jassids. Trials were conducted at the Nambingué observation post. The study designs were Fisher blocks with 5 objects and 4 replications. Each elemental plot had a length of 10 m and a width covering 10 lines, 8 of which were treated. The spacing between rows was 0.8 m. The distance between patches on a line was 0.4 m. The distance between blocks was 2 m. Six insecticide treatments were carried out. Treatments were started on the 45th day after cotton emergence, at 14-day intervals. These three new programs, which differ according to the composition and positioning of the active substances, were tested during two years in a fisher block design with four repetitions. Two programs, labelled Original Research Article