Effect Of Spraying Some Nutrient Solutions On Vegetative And Flowering Growth And Pigments Of Calendula Officinalis L

Abstract

This experiment was conducted in the lath house belonging to the College of Agriculture, the University of Basrah for the agricultural season 2020-2021. To study the effect of spraying with Kombe nutrient solution at concentrations of 0, 2, 4 g. L-1 and Crow more nutrient solution at concentrations of 0, 1.5, 3 g. L-1 and the interaction between them in the vegetative and flowering growth of Calendula officinalis L., the experiment was conducted in the Randomized Complete Block Design (RCBD) with three replication, The averages were compared according to the L.S.D test under the 0.05 probability level. The results showed that spraying with Kombe nutrient solution at a concentration of 4 g. L-1 or Crow more nutrient solution at a concentration of 3 g. L-1 had a significant effect on growth indicators, as the plant height reached 35.31 and 38.17 cm, the number of lateral branches reached 20.82 and 21.07 branch. Plant-1, the number of leaves was 54.44 and 58.30 leaves. plant-1, The percentage of dry matter of vegetative was 17.36 and 18.14%, the content of the leaves of total chlorophyll was 17.81 and 18.65 mg. 100 g-1 fresh weight, the number of flowers amounted to 19.07 and 21.44 flowers. plant-1, flower diameter was 6.27 and 6.60 cm, flower stalk length was 12.72 and 13.48 cm,The number of days required for flowering was 121.89 and 118.47 days, the total carotene content of the flowers was 30.17 and 31.47 mg. 100 g-1 fresh weight, respectively, compared to control treatment that recorded the lowest values. The results of the bi-interaction between the two experiment factors showed that spraying the Kombe nutrient solution at a concentration of 4 or 2 g. L-1 with Crow more nutrient solution at a concentration of 3 g. L-1 had a significant effect on all indicators of vegetative and flowering growth compared to the rest of the treatments and the control treatment.