Sugars, acids, and antioxidants as biologically active compounds, are significant elements of healthy tomato foods. The question arises if beneficial bioeffector microbes are able to improve the food quality of the tomato up scaled, among organic environmental conditions? Spore-forming bacteria used in the industry of Bacillus amyloliquefaciens FZB42 as single inoculums and its combinations with other Bacillus strains and N-fixing siderophore bacteria were used on tomato test plant in pots and in an organic field experiment. Soil nutrients, yield, and inside fruit quality, the content of some essential organic acids and sugars were measured during the growth period. The abundance of aerob heterotroph soil microbes was determined by the Most Probable Number method. A single industrial inoculum of used bioeffector had a positive effect on P-availability and yield in the pots. Among field conditions, the greater variability in environmental parameters could diminish the final significant differences of soluble P in soil and fruit yield. The soil available P-content and the fruit Total Soluble Solid content (TSS) and soluble sugar and organic acid content were significantly improved (p<0.05) both in pots and in the organic field conditions. Combination of different microbial treatments did not give further enhancement. There were seasonal differences also recorded in sugar-acid ratio, mainly at the field experiment. Appropriate bioeffector applications are the part of sustainable, organic and healthier tomato food production.
Plants seem to be rather defenceless, they are unable to do motion, have no nervous system or immune system unlike animals. Besides this, plants do have hormones, though these substances are produced not in glands. In view of their complexity they lagged behind animals, however, plant organisms show large scale integration in their structure and function. In higher plants, such as in animals, the intercellular communication is fulfilled through chemical messengers. These specific compounds in plants are called phytohormones, or in a wide sense, bioregulators. Even a small quantity of these endogenous organic compounds are able to regulate the operation, growth and development of higher plants, and keep the connection between cells, tissues and synergy between organs. Since they do not have nervous and immume systems, phytohormones play essential role in plants' life.
Influence of Rootstocks on Vegetative and Generative Characteristics of the Apple Cultivar 'Topaz' According to Organic Production Conditions in Eastern AustriaAbstract In autumn 2008, in the research orchard of the University of Natural Resources and Life Sciences in Vienna, the apple cultivar 'Topaz' was planted on the rootstocks M9 (clone T337) with and without 'Rubinola' as interstem, M26, M7 grafted at 25 cm and at 55 cm respectively, M111 and 'Bittenfelder seedling', trained as spindles and tested for eight years according to organic production rules. The trees on seeding grew very vigorously, followed by MM111 and M7 normally grafted; the M7 highly grafted trees showed less vigor, comparable with M26, while the trees on M9 with and without interstem grew very weakly. Tree losses were only observed on M9 without interstem. The highest yields per hectare were found on M7 normally grafted, followed by M26, M7 highly grafted and M9 without interstem. M7 highly grafted showed the highest single fruit weights, followed by MM111, at the other end were M9 with and without interstem, and M26. The rootstock M7 grafted at 55 cm combines a medium growth with high yield and good fruit quality and therefore can be recommended for dry areas like our site. M9 without interstem showed a higher specific yield and fruit firmness after storage compared to the variant with interstem. Whether these advantages for 'Topaz' on M9 can be combined with a higher K
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