EFFECT OF SPRAYING DIFFERENT CONCENTRATIONS OF FOLIAR FERTILIZER AND BALANCED NUTRIENT SOLUTION ON SOME VEGETATIVE AND ROOT GROWTH CHARACTERISTICS OF BRASSICA CAMPESTRIS L

Abstract

The study was conducted in Harmoush farms on the Najaf-Karbala road during the agricultural season 2021-2022. To study the effect of spraying different concentrations of foliar fertilizer and balanced nutrient solution on some vegetative and root growth characteristics of Brassica campestris L.. A factorial experiment (3 × 3) was carried out like the first factor, with three concentrations of foliar fertilizer (0, 3, and 6) ml. L-1 and the second three concentrations of the nutrient solution (0, 2, 4) ml. L-1 according to the completely random block design (R.C.B.D). The results showed that spraying foliar fertilizer at a concentration of 6 ml.L-1 led to an improvement in the vegetative and root growth indicators, as it increased (plant height, number of leaves, shoot fresh weight, shoot dry weight, total chlorophyll content, root diameter, root circumference, and the dry weight of the roots) while a treatment of 3 ml. L-1 was given the highest rate of root system weight compared to plants that were not sprayed, which gave the lowest values. Table (4) and (5) show that spraying with a nutrient solution at a concentration of 4 ml. L-1 had a significant effect on vegetative and root growth indicators (plant height, number of leaves, shoot fresh weight, shoot dry weight, leaves content of total chlorophyll, root diameter and root dry weight) while a 2 ml L-1 treatment was given highest rate in the root circumference compared to plants that were not sprayed, which gave the lowest values. The results showed that the spraying with the two fertilizers and the interaction between them had a significant effect on the vegetative and root growth characteristics, as it gave the highest rate when the interaction between (6 ml.L-1) of foliar fertilizer and (4 ml.L-1) of the nutrient solution in (plant height, number Leaves, fresh and dry weight of shoot, leaves content of total chlorophyll, root diameter, fresh weight of total root and dry weight of total root) while (6 ml.L-1) and (2 ml.L-1) treatment gave the highest rate of Root circumference compared to the control treatment that gave the lowest values for these traits