Growth and Production of Cultivars Ornamental Sunflower Irrigated With Water of Different Salinities

Samanda Costa Santos, Amaralina Celoto Guerrero, Adriana Silva Lima, Reynaldo Teodoro de Fatima, Janiny Vieira Abrantes, Marcos Eric Barbosa Brito, Arthur Vinicius Felinto Fernandes and Eder Pereira da Rocha Sousa

Journal of Agricultural Science, 2024, vol. 10, issue 10, 378

Abstract: The sunflower (Helianthus annuus L.) appears as an income alternative to the producers of the northeastern region of Brazil, however limited by the salinity present in the waters of the region, which makes it necessary to select cultivars that are more adaptable to this situation. On this, the objective was assessing the development of two cultivars of cutting ornamental sunflower with waters of different salinities. The experiment was performed in conditions of protected environment at UFCG, CCTA-Pombal-PB. It was performed in outline of blocks in factorial scheme 5 × 2, being five saline levels (N1 = 0.3, supply water; N2 = 1.5; N3 = 2.7; N4 = 3.9; and N5 = 5.1 dS m-1) and two cutting ornamental sunflower cultivars (Red Sun and Vincents II), with four repetitions and two plants by portion, with a total of 80 experimental units. The irrigation water salinity affected all the analyzed variables, up to estimate level of 2.7 dS m-1 acceptable reductions happen of 10% in the inflorescence and stem of cultivars of ornamental sunflower. The Red Sun cultivar when compared with cultivar Vincents II demonstrated better results in the studied variables.

Date: 2024
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