Achene production of the sunflower irrigated with brackish water

作者：Travassos Kaline D^*; Soares Frederico A L; Gheyi Hans R; Silva Debora R S; do Nascimento Ana K S; Dias Nildo da S

来源：Revista Brasileira de Engenharia Agricola e Ambiental, 2011, 15(4): 371-376.

• Helianthus annuus L
• salinity
• electric conductivity

The aim of this study was to determine yield components and achene production of sunflower (Helianthus annuus L.) variety Embrapa 122/V-2000 irrigated with water of different salinities in a greenhouse. The treatments consisted of six levels of salinity of irrigation water (ECw), N-1 - 0.5, N-2 - 1.0; N-3 - 2.0; N-4 - 3.0; N-5 - 4.0 and N-6 - 5.0 dS m(-1) at 25 degrees C in a randomized design with five replications. The internal diameter of the chapter, number of seeds, weight of 100 seeds, the total mass of seeds, dry weight of shoot and root, ratio of dry weight of root and shoot, water consumption, electrical conductivity of drainage water and the saturation extract of soil. The total mass of seeds and number of seeds decreased 11.39 and 9.64%, respectively, with per unit increase in electrical conductivity of irrigation water, the root dry mass was more affected by salinity of irrigation water than dry mass of aerial parts, salinity levels of drainage water at the end of experiment were about 2.2 times of electrical conductivity of saturation extract.

• 出版日期2011-4