The effect of spraying with silicon and moringa leaf extract on some growth and yield indicators of the cabbage plant (brassica oleracea var. capitata)‎

الملخص EN

The experiment was conducted during the winter season 2019-2020 at the Agricultural Research Station belonged to the College of Agriculture - University of Basra in the aim of determining the effect of treatment with silicon on the form of potassium silicate (K2SiO3) and Moringa leaf extract on improving growth indicators and the yield of the Galaxy hybrid, the experiment included 16 factorial treatments, which are four concentrations of silicon 0,1,2 and 3 ml.L -1 and four concentrations of Morinca leaf extract 0,5,10 and 15g.L -1 , The experiment was conducted according to a split plot design system according to the Complete Block design with three replicates.

The averages were compared according to the least significant difference LSD and at a probability level of 0.05.

The most important results obtained can be summarized as follows: The treatment with silicon at a concentration of 3 ml.L-1 resulted in a significant increase in the number of wrapper leaves (31.46 leaves.plant-1 ), head weight (1.17 kg), total yield (34.45 tons.ha-1 ), in addition to vitamin C (64.58 mg.

100 g-1 ), As for the concentration of 2 ml.L-1 silicon, it significantly affected the leaf area (10143 cm2), the percentage of dry matter (13.13%), the amount of chlorophyll (41.90 mg.g-1 ) and carbohydrates (55.99 mg.

100 g-1 ).

The aqueous extract of Moringa leaves at a concentration of 15 ml.L-1 significantly affected the number of wrapper leaves (31.75 leaves.

plant-1 ),Head weight (1.16 kg), the total yield (34.01 tons.ha-1 ) in addition to the amount of carbohydrates (56.98 mg.

100 g-1 ), while the leaf area increased at concentration 10 ml.L-1 and reached (10164 cm2 ),The bi-interaction between the experiment factors had a significant effect on all the indicators under experiment (number of wrapper leaves, leaf area, head weight, total yield, dry matter percentage, amount of chlorophyll , carbohydrate and vitamin C ).