Effects of Lactate, Humate and Bacillus Subtilis on the Growth of Tomato Plants in Hydroponic Systems

Böhme, M.

doi:10.17660/actahortic.1999.481.24

Cited by 21 publications

(19 citation statements)

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“…Both aqueous sample filtration and the EC measurement methods only take nutrients that are available in ionic form into account. These suspended organic solids are assumed to promote growth because they might simulate natural growing conditions as found in soil, unlike the growing environment of hydroponics [68]. There is a lack of knowledge about the nature of organic molecules and the biochemical processes occurring for their assimilation by plants.…”

Section: Nutrient Balancementioning

confidence: 99%

Challenges of Sustainable and Commercial Aquaponics

et al. 2015

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Abstract:The world is facing a number of serious problems of which population rise, climate change, soil degradation, water scarcity and food security are among the most important. Aquaponics, as a closed loop system consisting of hydroponics and aquaculture elements, could contribute to addressing these problems. However, there is a lack of quantitative research to support the development of economically feasible aquaponics systems. Although many studies have addressed some scientific aspects, there has been limited focus on commercial implementation. In this review paper, opportunities that have the potential to fill the gap between research and implementation of commercial aquaponic systems have been identified. The analysis shows that aquaponics is capable of being an important driver for the development of integrated food production systems. Arid regions suffering from water stress will particularly benefit from this technology being operated in a commercial environment. OPEN ACCESSSustainability 2015, 7 4200

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Section: Nutrient Balancementioning

confidence: 99%

Challenges of Sustainable and Commercial Aquaponics

et al. 2015

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“…However, the use of closed hydroponic systems on the commercial scale is associated with problems of crop nutrition management and the proliferation of root pathogens (Savvas, 2002). Recently, interest has grown in the use of beneficial microorganisms in soilless culture to induce plant resistance to biotic and abiotic stress factors, and to increase plant growth and yield (Böhme, 1999;Armstrong, 2001;Ehret et al, 2001;Alsanius and Gertsson, 2004;Koohakan et al, 2004;Schnitzler, 2004;Van Os and Alsanius, 2004;Woitke and Schnitzler, 2005;Deniel et al, 2006).…”

Section: Introductionmentioning

confidence: 99%

Effects of nutrition and Bacillus amyloliquefaciens on tomato (Solanum lycopersicum, L.) growing in perlite

Gül

Kıdoğlu

Tüzel

et al. 2008

Span. j. agric. res.

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Plant growth-promoting rhizobacteria (PGPR) are free-living bacteria that, as their name suggests, promote plant growth. However, they can also be of help in the biological control of plant diseases. This study reports the effects of two different commercially available strains of Bacillus amyloliquefaciens (FZB24 and FZB42) on tomato production in open and closed systems in the presence of different amounts of nutrients. Three factors were tested: (1) the type of nutrition system (open or closed), (2) the concentration of the nutrient solution (full or half strength), and (3) the PGPR applied (either B. amyloliquefaciens FZB24 or B. amyloliquefaciens FZB42, or a no-PGPR control). Perlite was used as the growth medium. Variables related to water use efficiency, yield and fruit quality were assessed. The use of half strength nutrient solution was sufficient for full growth in the open system in both spring and autumn seasons. However, the same strength nutrient solution was associated with reduced yields in the closed system during the autumn season. The application of either strain of B. amyloliquefaciens increased the yield of the tomato plants by 8-9% in the open system in the spring, whereas they had an adverse effect on yield in the closed system under half strength nutrient solution conditions during the autumn.Additional key words: closed system, nutrient concentrations, open system, plant growth-promoting rhizobacteria, soilless culture. ResumenEfectos de la nutrición y de Bacillus amyloliquefaciens en tomate (Solanum lycopersicum L.) cultivado en perlita Las rhizobacterias promotoras del crecimiento de las plantas (PGPR) son bacterias que viven libres y, como su nombre indica, promueven el crecimiento de las plantas. Sin embargo, también pueden ser de ayuda en el control bioló-gico de las enfermedades de las plantas. En este estudio se investigaron los efectos de dos cepas comerciales de Bacillus amyloliquefaciens (FZB24 y FZB42) sobre la producción de tomate en sistemas abiertos y cerrados, en presencia de diferentes cantidades de nutrientes. Los tratamientos fueron: (1) tipo de sistema de nutrición (abierto o cerrado), (2) concentración de nutrientes (solución nutritiva completa o incompleta), (3) la PGPR aplicada (B. amyloliquefaciens FZB24, B. amyloliquefaciens FZB42, o un control sin PGPR). Se utilizó perlita como medio de crecimiento. Se evaluaron las variables relacionadas con la eficiencia del uso del agua, producción de tomate y calidad del fruto. La solución de nutrientes menos concentrada fue suficiente para un pleno crecimiento en el sistema abierto en ambas estaciones (primavera y otoño). Sin embargo, la misma solución de nutrientes disminuyó en otoño la producción en el sistema cerrado. La aplicación de ambas cepas de B. amyloliquefaciens aumentó la producción de las plantas de tomate un 8-9% en el sistema abierto en primavera, mientras que tuvo un efecto adverso sobre la producción en otoño en el sistema cerrado con la solución menos concentrada.Palabras clave adicionales: concent...

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“…Bio fertilizers have become an ideal substitute for chemical fertilizers for conditioning the soil fertility and to maintain the agro-ecosystem. Investigation of the performance of SBO for these purposes seemed highly worthwhile to the authors of the present work in view of the relevant share of the agriculture market for chemicals and of the expected world demand increase for fertilizers (Freedonia Group, 2011), particularly for organic agriculture (Dorais, 2007), of the positive effects in agriculture reported for similar substances isolated from peat (Böhme, 1999;Hoanf,g et al, 2001) or other sources (Atiyeh et al, 2002;Valdrighi et al, 1996), and of the market price of peat based commercial products ) rated up to 10-15 $ kg -1 . These facts pointed out a rather high stake for investigating SBO as growth promoters or soil activators in agriculture (Dorais, 2007), either from the economic and the environmental point of views.…”

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confidence: 99%