In this research, we investigated the effect of different types of soil on plant growth. We wanted to study the effects of soil on plant growth to see how different soil content can affect plant growth. The experiment was held by planting watercress seeds in three different soils; Qatari soil, Egyptian soil, and American soil. Fifteen seeds were planted in each soil. The reason for choosing watercress seeds specifically is their fast growth rate and the fact that they grow in sunny conditions [1], which matches Qatar’s atmosphere. The experiment was done for 21 days based on an investigational study by [2]. The plants were watered with 150 ml in equal time intervals, and they have placed 2 cm away from the window. After three weeks, the average seeds plumule of the seeds planted in the American soil were 18.14, and the average height of the radical was 3.04. The seeds planted in the Egyptian soil had an average shoot length of 11.38 cm, and 1. 93 cm root length; While the seeds planted in the Qatari soil had shown an average height of 1.6cm for the radical and 9.97 cm for the plumule. Those results indicated that American soil was most fertile in comparison to Egyptian or Qatari soil.

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T. M. Mahmoud, “The effect of different types of soils on the germination rate of the watercress seeds (nasturtium officinal),” International Journal of Applied and Physical Sciences, vol. 2, no. 1, pp. 21-32, 2016.