Effect of Surface Drip Irrigation and Polymer Addition on Some Physical Soil Characteristics, Growth and Yield Characteristics of Cauliflower

Abstract

Abstract The study was conducted during the fall season at the research station of the University of Anbar - College of Agriculture, cauliflower seedlings were planted on 10/2/2021 in a soil with a sandy loam mixture texture, this research aimed to study the effect of the two irrigation methods, which are surface drip irrigation (IC) and partial drying of the soil surface (IP) and the addition of polymer in the following proportions, They are without adding MO, 0,3%ML, and 0,6%MH in bulk density, porosity, weighted diameter, plant height, leaf area, and total yield, The experimental treatments were distributed using the factorial experiment within the randomized complete block, and the results of the study showed that the method of partial drying of the soil surface was significantly superior to the rest of the treatments by giving it the lowest average of the bulk density values 1,25 mg,g-3 and the highest average of the porosity values at 50,79%, and an increase in the average values of the weighted diameter, plant height, leaf area and total yield at 0,36 mm, 50,33 cm, 10,58 dm plant-1 and 33,61 tons ha-1, respectively, The effect of the polymer treatments on the above traits, the polymer addition treatment was significantly superior by 0,6% by giving it the lowest apparent density at 1,22 Mg,g-3 and the highest mean of the porosity values, which was 52,17%, 11,79 dm per plant-1 and 34,17 tons per hectare-1, respectively,