The subject of the dissertation was a "study of the influence of plant-strengthening agents on growth, yield and quality of horticultural crops". Four different preparations were tested for their plant-strengthening effect. The experiment was carried out on lettuce and tomatoes, which were grown in a film tunnel in the experimental garden of the university in the years 2002 and 2003.

The results are more than convincing ...

GRANDER® water caused

For heads of lettuce

• An improved after harvest
• Improved storage behavior

For tomatoes

• yield increase
• Increasing the number of extra fruits (increased share of quality 1)
• Greater resistance to black rot Increase of vitamin C content
• No occurrence of shell cracks

>> Download: Abstract dissertation

Dr. Heidrun Schinagl makes a clear recommendation in the publication of the dissertation in the magazine "demeter 7 zeitung" for the use of GRANDER® water revitalization in tomato cultivation.