Response Of Two Cauliflower Cultivars Brassica Oleracea Var. Botrytis To Plant Spacing And Foliar Spraying With Nano-Boron Fertilizer

Abstract

An experiment has been carried out in a vegetable field,  College of Agriculture and Forestry / University of Mosul/ Tourist forest area , during the autumn  growing season (2022) , The experiment included a study of three factors, the first was two cultivar of cauliflower (Narges and Ice ball). The second factor included three planting distances (35, 40, 45) cm between one plant and another. The third factoris Nano-boron fertilizer with three concentrations of 0, 30 and 60 mg L^-1 plants treated with Nano-boron fertilizer  during three stages of plant growth: The first after two weeks of transplanting, the second and third stages with a 15-day interval between addition and another , thus the experiment involved 18 treatments (2 × 3× 3).arranged in a factorial experiment within split-plot using the Randomized Complete Block Design with three replicate , cultivars were placed in the main plots and the interaction between planting distances and Nano-boron fetilizer in sub-plots  . Results were statistically analysis and compared the means according to the Duncan multiple range test at a 5% probability level.