تأثير نوعين من المركبات العضوية والرش بالزنك المخلبي في نمو وحاصل نبات البروكلي Brassica oleracea var. Italica

Effect of two organic compounds and Zinc spraying on growth and yield of broccoli plant (Brassica oleracea Var. Italica) 11:25 Reply lng_context

> Mohammed M. Hameed:
Abstract
The experiment was conducted in the field of the Department of Horticulture and Landscaping – College of Agriculture – University of Karbala to study the effect of adding two types of organic compounds, Alkahumic and Bactosan, and spraying with chelated zinc, and the interaction between them on the growth and yield of broccoli for the winter agricultural season 2021-2022,The experiment was designed according to the Factorial Experiments System within the Randomized Complete Block Design (RCBD), and the transactions were distributed to 18 treatments randomly and with three replications, The experiment included studying of three factors; The first factor is the addition of the organic Alkahiumic compound at three levels 0, 8 and 12 kg ha-1, And the second factor is the addition of the organic compound Bactosan at three levels 0, 6 and 8 L ha-1, And the third factor is chelated zinc spraying at two concentrations 0 and 1 g L-1, Thus, the experiment included 54 experimental units, and the averages of the transactions were compared using the (L.S.D) test, the least significant difference at the probability level of 0.05. The results obtained can be shown through the following:
1 The addition of the organic compound Algahumic had a significant effect on all indicators of leaf nutrient content (the percentage of nitrogen, phosphorous, potassium and zinc concentration in leaves was 4.02%, 0.73%, 1.82 and 62.19 mg Zn kg-1, respectively), And the vegetative indicators (leaf area 93.01 dm2 plant-1, shoot dry weight 192.2 g plant-1, chlorophyll content of 76.17 mg 100 gm-1 fresh weight), as well as yield indicators (curd diameter 18.82 cm and total yield 21.468 tons ha-1), And the qualitative indicators of the yield (the content of curd of ascorbic acid is 75.82 mg 100 g-1 and the percentage of protein in the curd is 2.84%) at the level of 12 kg ha-1 compared to most of the other treatments.
2 The addition of the organic compound Bactosan significantly affected at the level of 8 L ha-1, which was significantly superior in results to all other levels of the leaves content of nutrients (percentage of nitrogen in leaves 3.83%, phosphorus 0.70% and potassium 1.73%), And the vegetative indicators (leaf area 90.88 dm2 plant-1, dry weight of the shoot 185.1 g. plant-1, dry weight of the root 14.89 g plant-1, and the percentage of chlorophyll in leaves 74.14 mg 100 g-1), And it gave the highest values in yield indicators (total yield of curd 21.140 tons ha-1) and the same level recorded the highest significant values in qualitative indicators of yield (percentage of total soluble solids in curd 7.03% and ascorbic acid content in curd 73.60 mg 100 gm-1).
3 Spraying of zinc at a concentration of 1 gm l-1 significantly increased the nutrient content of leaves (percentage of nitrogen, phosphorous, potassium and zinc concentration in leaves 3.70%, 0.66%, 1.63%, and 66.98 mg Zn kg-1, respectively), And the vegetative indicators (stem diameter 3.39 cm, leaf area 88.04 dm 2 plant-1, chlorophyll content in leaves 71.95 mg 100 g-1), As for the quantitative and qualitative yield indicators, they gave clear significant differences for the same concentration, represented by (the total yield of the main curd 20,714 tons ha-1 and the content of ascorbic acid in the curd 71.27 mg 100 g-1), While the characteristics of the percentage of total soluble solids and the percentage of protein in the curd did not record significant differences when spraying with zinc.
4 The effect of the binary interference between the two organic compounds, Algahumic and Bactosan, showed a significant superiority in the nutrient content of the leaves and in all vegetative indicators and quantitative and qualitative yield indicators at the level of 12 kg ha-1 and 8 liters ha-1.

> Mohammed M. Hameed:
5 The results of the binary interactions between the organic compound Alghumic at a level of 12 kg ha-1 and the zinc spray at a concentration of 1 g L-1 were shown significant differences as the highest values were recorded in the leaves content of nutrients, vegetative indicators, qualitative and chemical yield indicators, represented by (percentage of nitrogen, phosphorous and potassium in leaves, leaf area, dry weight of vegetative group, dry weight of root group, percentage of chlorophyll in leaves, total yield of curd and percentage of Total solids solube, ascorbic acid content and percentage of protein in the curd).
6 The binary interaction between the organic compound Bactosan at a level of 8 L ha-1 and spraying with zinc at a concentration of 1 gm L-1 achieved a significant increase in the nutrient content of the leaves and all the vegetative indicators and indicators of quantitative and qualitative yield.
7 The triple interaction between the addition of the organic compounds Alkahumic and Bactosan and the spraying with zinc showed significant differences in all the studied traits, as the addition recorded 12 kg. ha-1 and 8 L. ha-1 and 1 g. L-1 had the highest indicators of vegetative growth, and indicators of quantitative and qualitative yield compared to most of the treatments.