Desempenho produtivo da rúcula sob diferentes condições de sombreamento e níveis de água salina

Abstract

Arugula is a fast growing vegetative crop and short cycle, of great worldwide acceptance. In Brazil, its production and consumption are prominent in the South, Southeast and Northeast, generating employment and income for family agriculture. The use of saline water in the production of vegetables is one of the main challenges of researchers and rural producers, since saline stress is one of the biggest abiotic problems that causes a decrease in the production and yield of crops. Cultivation in a protected environment has presented a series of advantages in the development of plants, such as increased productivity; improvement in product quality; decrease in the seasonality of the offer, providing greater competitiveness for the possibility of offering quality products all year round. In view of this assertion, the objective was to evaluate the growth of the arugula culture under different levels of saline water. The experiment was conducted in a greenhouse at the Experimental Area of the Agricultural Sciences Center of the Federal University of Alagoas, in the city of Rio Largo, AL. The treatments consisted of shading (T1 = unshaded, T2 = shaded) and five levels of saline water (0.5, 2.0, 3.5, 5, 0 and 6.5 dS m- 1) with four replicates. The variety of arugula used was the APRECIATTA Folha Larga. number of leaves, plant height and shoot dry mass were analyzed. The APRECIATTA arugula variety showed a decrease in normal growth up to 2.0 dS m-1 and with the increase in the electrical conductivity of the water caused a reduction in all growth rates, presenting a varied when shaded or not shaded. Keywords: Eruca sativa, saline stress, growth index.