conceptHydroponicsHydroponics is the technique of growing plants in a defined nutrient solution without soil.Recall QuestionWho demonstrated hydroponics in the source?Reveal AnswerJulius von Sachs (Germany, 1860).ExamplesTomatoSeedless cucumberLettuceRecall cueSource-backed detailScientistDemonstrated by Julius von Sachs (Germany, 1860).SetupNutrient solution is aerated for optimum growth.Use in studyIdentify essential elements and deficiency symptoms by adding, removing or varying an element.Commercial examplesTomato, seedless cucumber & lettuce.