Growth Analysis of Bok Choy (Brassica rapa L.) Plant on Urea Fertilizer Application Using Sprinkler Irrigation System

Abstract

Sprinkler irrigation is one of the methods where water is applied by spraying water into the air and falling like rainwater, allowing it to avoid surface flow. This study aims to analyze the growth response of bok choy (Brassica rapa L.) plants to the dosing of urea fertilizer and determine how the effect of water application through the sprinkler irrigation system on the growth of bok choy (Brassica rapa L.) plants. The method used is an experimental method using a group randomized design (RAK) and analyzed using analysis of variance (ANOVA) and an experiment to calculate the uniformity of sprinkler irrigation water distribution. The parameters observed in this study were water discharge, water uniformity (CU), plant growth, and soil physical properties. The results showed that the average value of water discharge was 3.27 l/s, the average value of water distribution water uniformity was 88,02%, and the value of the beam distance was 2.47 m. The growth of bok choy plants responded quite well on the 30th day by giving 1 gram of urea + 200 ml of water to sprinkler irrigation systems.