Desempenho da rúcula sob condições de sombreamento e níveis de salinidade da água de irrigação

Abstract

Arugula is a crop of fast vegetative growth and short cycle, widely accepted worldwide. In Brazil, its production generates jobs and income for family farming. However, the use of saline water in the cultivation of this plant is one of the main factors that limit production. Given this situation, the objective of this study was to evaluate the growth of Apreciatta arugula cultivated under conditions of shading and salinity levels of irrigation water. The experiment was conducted in a greenhouse in the experimental area of the Agricultural Sciences Center of the Federal University of Alagoas, in the city of Rio Largo, AL. The treatments were obtained from the combination of two shading conditions (with shading and without shading) and five levels of electrical conductivity of the irrigation water (0.5; 2.0; 3.5; 5.0 and 6.5 dS m-1). The experimental design used was completely randomized in a 2 x 5 factorial scheme. Combined, the factors resulted in 10 treatments with four replications and one plant per plot, totaling 40 experimental units. Arugula plants were evaluated for leaf number, plant height, leaf area and dry matter of the aerial part. Increasing levels of salinity in the irrigation water, lead to a reduction in the number of leaves, plant height and dry mass of the aerial part of arugula plants cultivar Apreciatta. However, the use of shading together with the salinity of irrigation water up to 1.4 dS m-1does not affect the leaf area of arugula plants, being possible to cultivate without considerable losses.

Gas Exchange and Hydroponic Production of Zucchini Under Salt Stress and H2o2 Application

“…Salinity has a negative effect on plants and depending on the cultivated species, the losses are irremediable, compromising the yield and quality of the product, making its commercialization unfeasible (SANTOS et al, 2020). Under conditions of salt stress, plants accumulate sodium and chloride ions in excess, responsible for different physiological and biochemical changes, including ionic imbalance and decreased leaf water potential, inducing the production of reactive oxygen species (KOTAGIRI; KOLLURU, 2017).…”

Salinização secundária no semiárido e seus impactos no solo, na agricultura e cultivo das plantas – uma revisão

“…Estudando os efeitos do sombreamento e cinco níveis de salinidade da água de irrigação (0,5; 2,0; 3,5; 5,0 e 6,5 dS m -1 ) sobre o crescimento da rúcula cultivar Apreciatta, Santos et al (2020b) afirmaram que o cultivo em níveis crescentes de salinidade levou a redução no número de folhas, altura e massa seca da parte aérea das plantas. Os autores da pesquisa confirmam ainda que a utilização conjunta do sombreamento com a salinidade da água de irrigação em até 1,4 dS m -1 não inviabiliza o cultivo da rúcula.…”