The sunflower is one of the most cultivated oleaginous plants worldwide, especially in Romania. The oil extracted from sunflower seeds based on the fatty acids that it contains, is a raw material in various important industries, including the food industry and the production of biofuels. Hulled seeds are a rich source of protein and other nutrients, so their inclusion in a balanced diet benefits the human body. The pressure of the food industry on the production of sunflowers is even bigger now due to the drought and heat that have manifested in recent years because of environmental pollution. In agriculture, one of the methods of reducing pollution is soil work. The aim of this paper is to compare the amount of water stored in the plant organs and the sunflower biomass, depending on the tillage, under the influence of the abiotic factors that stress plant growth in the southeast of Romania. Regarding the stems, the maximum humidity (59.4%) was registered in the No-till plot, and the minimum humidity (26.3%) in the scarified plot. Concerning the leaves, the maximum and minimum humidities were 59% in the No-till soil and 46.1% in Paraplow.