The role of nano-phosphorus fertilizer in the growth and yield of colorful cauliflower hybrids Brassica Oleracea. var. botrytis
Abstract
A field experiment was conducted at the research station of the Department of Horticulture and Landscape Engineering at the College of Agriculture, University of Diyala during the 2022-2023 agricultural season to study the effect of foliar feeding with nano- and regular phosphorus fertilizer on the growth and yield of colored cauliflower. The experiment was carried out within a randomized complete block design (RCBD) with the Split Plot system with three replicates that included 60 Experimental unit. The area of the experimental unit was 2.5 m2. The second factor was the comparison without fertilization, spraying with regular phosphorus fertilizer P2O5 at a concentration of 5 gm l-1, spraying with nanophosphorus (17% phosphorus). concentration of 1 L-1, spraying with nanophosphorus (17% phosphorus) at a concentration of 2 L-1. The results can be summarized as follows: The genetic composition had a significant effect on the characteristics of vegetative growth and yield, as the plants of the Megha genotype excelled in giving the best percentage of chlorophyll in the leaves ( 77.85 g. 100 g fresh weight), while the Di Sicilia Violetti formulation was superior in plant height (113.2 cm.plant-1), and the Fuji yama formulation was superior to the best leaf area ratio (115.0 cm.2.plant-1), and the Megha and Fuji yama formulations were distinguished by the lowest Number of days required for maturity (45.24 and 44.74 days, respectively), and Verde Di Macerata genotype plants excelled with the best average shoot weight and total yield (2.215 kg). CD-1 and 92.32 tons. E-1) sequentially. All foliar fertilization treatments with nano- and regular phosphorus had a significant effect on the characteristics of vegetative growth and yield, and the concentration exceeded 2 gm l-1 with the best percentage of chlorophyll in the leaves (81.89 mg.100 g-1), plant height (95.10 cm.plant-1), and leaf area (116.2 dm2 Plant-1), early yield (55.50 days), average weight of flower stalk (1.945 kg-1), total yield (81.04 tons ha-1), and the effect of the two-way interaction on the characteristics of vegetative growth and yield, as the Megha genotype plants fertilized with a concentration of 2 g excelled. L-1 nano phosphorus for the percentage of chlorophyll in leaves (86.16 mg. 100 g-1), and the plants of the Di Sicilia Violetto formula fertilized with a concentration of 2 g l-1 nano phosphorus excelled at a plant height of 118.7 cm. plant-1), and the genotype plants excelled. Verde Di Macerata fertilized with a concentration of 2 gm.L-1 nanophosphorus per leaf area (135.1 dm2.plant-1), and early plants treated with the Fujiyama genotype were fertilized with nanophosphorus at a concentration of 2 gm.L-1 nanophosphorus in the minimum number of days to maturity (40.17 days). ), while Verde Di Macerata genotype plants fertilized at a concentration of 2 g. L-1 nano phosphorus with the best weight per pink disk (2.606 kg-1) and the total yield (108.6 tons. ha-1).
