Complementary Irrigation Effect on Seed Cotton Yield in North Côte d’Ivoire

Brahima Traoré, Tagouèlbè Tiho, Zégoua Régis N’gatta and Jean Pohé

Journal of Agricultural Science, 2024, vol. 12, issue 2, 61

Abstract: The study was set to assess a complementary irrigation effect on seed cotton yields in the Northern Côte d’Ivoire where the cotton is the main cash crop. Firstly, the soil samples were collected from the surface down to 30 cm depth and analyzed. The soil was sandy and silty. So, 65 kg of 46%urea and 285 kg of NPKSB15-15-15-6-1 were applied for its correction. Secondly, in a complete randomized blocks, four tests were conducted, within those were T0 (no complementary irrigation and no crop protection products and fertilizers), T1 (no complementary irrigation, with crop protection products and fertilizers, the cotton cultivation ongoing practice in the Northern Cote d’Ivoire, therefore the reference), T2 (complementary irrigation, along with crop protection products and fertilizers), T3 (only complementary irrigation, without any crop protection products and fertilizers). Thirdly, the tests were replicated in 3 blocks. As a result, from T1 to T2, the plants heights, the plants density at harvest period, bolls number per plant and seed cotton yields were respectively 88.58±1.78 vs 96.08±1.78 cm (+8.47%) at day 73; 53,934±1,260.78 vs 67,593±1,260.78 plants per ha (+25.32%); 23.11±0.81 vs 26.39±0.81 bolls per plant (+14.19%) and 1,616.26±67.86 vs 2,657.77±67.86 kg/ha (+64.44%). Conversely, the complementary irrigation led to higher pest damages on bolls, because 13±2.2% of T2 bolls were attacked, while just 4.6±2.2% of T1 bolls were damaged by insects’ pest. Looking for solutions linked to climate change effects, a complementary irrigation in cotton farms in the Northern Côte d’Ivoire could be profitable to the cotton growers. Nonetheless, the farmers should pay a great attention to the pest management.

Date: 2024
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