Within the 2nd programme Cultivation-out-of-the-soil for field crops (2014-2017) research f°Cussed onoptimisation of the cultivation, sowing on water, the use of a protective tunnel and upscaling. The robustnessof the growing system could be improved by these experiments. Economically the cost of traditional open fieldcropping is almost comparable with the cultivation on water (deep flow technique). In the plant raising stage adecrease in the growing period can be achieved to 60 instead of 84 days. Uniformity is important for a once overharvesting crop but still variation is big, grading of young plants helps a little. Oxygenation of larger ponds isimportant.