Investıgatıon of the development of purslane plant (Portulaca Oleracea L.) under soil stress conditions

Purslane (Portulaca oleracea L.) is an edible wild plant that is widely grown in the world, including Türkiye. Purslane plant, which is an important component of Mediterranean cuisine, can grow spontaneously in nature. Stress conditions can directly or indirectly affect its growth and development in the environment in which it is grown. In the current study, stress conditions of soil organic matter content, irrigation water amount and irrigation water salinity were investigated in pot experiments. The experiments were carried out in a 72 m2 greenhouse established on the Dokuz Eylül University Tınaztepe Campus. From the variables, soil organic matter was applied as 1%, 1.8% (control), 3% and 5% on a dry weight basis. 15 purslane seeds were planted in each pot and left to germinate. Irrigation water amounts were chosen as 100%, 75%, 50%, 30%, 15% of the field capacity. The last variable in the application was determined as the salinity of the irrigation water; the conductivity of the applied irrigation waters were control (tap water-about 0.5 mS/cm), 4 mS/cm, 8 mS/cm, 16 mS/cm. All pots were prepared in four repetitions and the study was carried out with a total of 320 pots. Experiments were carried out for 90 days from the first planting. In the study, it was observed that the increase in organic matter increased plant germination. Statistical evaluation was also made and the effects of irrigation water amount and salinity were also evaluated according to principal component analysis. As the field capacity decreased, decreases were observed in plant growth, but this was mostly observed at 30% and 15% field capacity. The negative effects of salinity on plant growth were observed at 8 mS/cm and 16 mS/cm values.