Effect of Colored Cover Material on Some Nutrient Concentrations of Radish Plant (Raphanius sativa L.)

Abstract

In this study, it was aimed to investigate the effects of different colored cover materials on some nutrient concentrations of radish plants. The study was conducted in 3 plastic, tunnel ventilated greenhouse at the research center of agriculture faculty, IUAS in 2019. Greenhouses were covered with blue, red and transparent PE (as control) materials to examine the effects of coverage materials. The three greenhouses used in the application are named as follows: Blue colored (BlueG), Red colored (RedG) and Transparent control (ConG) greenhouses. The study was carried out in the spring term of 2019. At the end of the growth season, leave and tuber samples were taken to make potasium (K), magnessium (Mg), calcium (Ca), copper (Cu), zinc (Zn), manganese (Mn) and iron (Fe) analyses. Results revealed that colored coverage materials significantly affected, except Zn, leaf and tuber mineral nutrient concentrations. At the end of the experiment, it was determined that the colored cover material did not only affect Zn concentrations in the leaf and tuber. In addition, especially in the leaves, colored materials led to increasing all nutrient concentrations when compared to the control greenhouse. Specially, leaves of the plants grown under blue coverage had considerably higher Ca, Mg, Fe, Mn, and Cu when compared to the others. In particular, it has been determined that BlueG application increases Fe, Mn, Cu, Mg and Ca concentration in leaves. Similarly, blue covered resulted in increases of K, Fe and Cu concentrations in tubers of plants. Likewise, it was determined that the BlueG application increases the Fe, Cu and K concentration in the tuber of the radish plant. As a result, it was concluded that the use of blue cover material for the growing of radish plants in greenhouses is the most appropriate color application since it increases the content of nutrients specified in the study.