SJIF Impact Factor 2021: 7.13| ISI I.F.Value:1.241| Journal DOI: 10.36713/epra2016 ISSN: 2455-7838(Online) EPRA International Journal of Research and Development (IJRD) Volume: 6 | Issue: 3 | March 2021 - Peer Reviewed Journal 2021 EPRA IJRD | Journal DOI: https://doi.org/10.36713/epra2016 | www.eprajournals.com |87 | A REVIEW ON EFFECT OF POTASSIUM AND CALCIUM ON DIFFERENT PARAMETERS ON PLANTS UNDER HYDROPONIC CONDITION Divya Rathor 1* 1 Department of Botany, Bioinformatics and Climate Change Impacts Management, School of Science, Gujarat University, Ahmedabad, Gujarat, India. Sandhya Verma 2 2 Department of Botany, Bioinformatics and Climate Change Impacts Management, School of Science, Gujarat University, Ahmedabad, Gujarat, India. Hitesh Solanki 3 3 Department of Botany, Bioinformatics and Climate Change Impacts Management, School of Science, Gujarat University, Ahmedabad, Gujarat, India. Article DOI: https://doi.org/10.36713/epra6538 ABSTRACT Hydroponics is a technique for better plant production in a liquid nutrient solution and without use of soil or artificial media. In this method almost all terrestrial plants, ornamental crops, vegetables, and foliage plants can be grown with their roots immersed directly to the mineral nutrient solution. This system provides better and higher crop yields, minimize the time of production and there is no weeding or cultivation required. The effect of calcium and potassium concentration affect the shoot, root and on the growth of plants. It enhance the structural, physiological as well as morphological parameters of plants. It shows the better quality and high yield of crops. This review is focused on the effect of potassium and calcium on the growth and productivity of plants. This article also evaluates the role of K and Ca under hydroponic system to test the different parameters. KEYWORDS : Hydroponic, Potassium, Calcium, Growth and Productivity. 1. INTRODUCTION The term 'Hydroponics' was derived from Greek word 'hydro' means water and 'ponos' mean labor. Hydroponics is a modern agriculture technique that uses mineral nutrient solution rather than soil for crop production (Fraz Ahmad Khan et al.,2018). Hydroponics was found to be better alternative and can be defined as the cultivation of plants without soil, which is being commercially used in the most of the western countries. This study explores the applications of this cultivation technique and to reveal its future importance. This method can be adapted to almost all the terrestrial plants. Vegetable food crops like wheat, tomato, spinach, mint, coriander and many more plants are being cultivated in commercial scale. The construction of a hydroponic system requires an initial investment, hard work, and care. Better the yield will be, if approached as it needs. It was recommended that this technique can be adapted as a step to produce the food crops and medicinal plants to meet the global demand, to control the global warming, and there by conserving the Mother Nature for the better future. The increased population, sub-urbanization of the forest (excluding land for commercial food production), improper agricultural practice which altered the soil pH, synthetic fertilizers, pesticides