Abstract
An investigation into the influence on cauliflower growth and yield of fertilizer combination and addition technique nano-fertilizer N20P20K20 was conducted at the Horticulture Department and Landscape Agriculture College Tikrit University Research Station for the growing season 2022-2021 (Brassica oleracea var. botrytis). The experiment included foliar application of nano-fertilizer N20P20K20 3gL-1, ground addition of nano-fertilizer N20P20K20 g L-1, chemical fertilizer, organic fertilizer 10 m3 ha-1, spray nano 3gL-1+organic, ground addition of nano 3gL-1+organic, organic 10m3 ha-1+chemical. With three repetitions of ten treatments each, the experiment consisted of 30 experimental units using the Randomized Complete Blocks Design (R.C.B.D.) and comparing their averages using Duncan’s multiple range test at the 0.05 probability level. There was an improvement in crud perimeter (57.66 cm), crud length (29.22 cm), and crud diameter (42.87 cm) when nano-fertilizer was sprayed with 3g L-1+ chemical treatment; however, when nano-fertilizer was added to the ground with 3g L-1+ chemical treatment, yield characteristics of one plant (5.027 g plant-1) and the total yield (134.044 tons ha-1) were not affected significantly.
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