Effects of Different Salinity Levels on Plant Nutrient Elements of Head Lettuce Cultivation (Lactuca sativa var. capitata) in Soilless Culture

Abstract

The research was determined that on yield and plant nutrients of three different salinity levels [(Control (EC0), Control +1 dS m-1 (EC1), Control +2 dS m-1 (EC2)] of head lettuce cultivation (Lactuca sativa var. capitata) with soilless culture. In order to reach the determined target, Bombola F1 variety was grown by using perlite medium in channels made of PE material. With this aim to achieve the specified goal, plant nutrient content were analyzed. In the I. production period, an average of 0,25 L plant-1 and 3.76 L plant-1 plant per day, II. In the production period, an average of 0.33-3.50 L plant-1 nutrient solution was applied. In the I. production period, the average amount of nutrient solution drained from the subjects was between 0.15-2.29 L per plant-1 and II. In the production period, it varied between 0.26-2.43 L plant-1. The main effect of salinity levels on the N, P, K, Mg, Zn and Mn contents of the head lettuce leaves made a statistically significant difference. The effect of salinity levels on the Ca, Fe and Cu contents of the head lettuce leaves was insignificant (p<0.05). It is possible to approach that soilless agriculture head lettuce cultivation can be carried out by using poor quality and salt irrigation waters with a certain concentration.