Compensation effect of bacterium containing biofertilizer on the growth of Cucumis sativus L. under Al-stress conditions (original) (raw)
Related papers
2017
Knowing how aluminum in acidic condition may limit the growth of mung bean (Vigna radiate) is important because bean is one of the most important food legumes for people. Aluminum (Al) toxicity is one of the major constraints of crop production in acid soils. Five-day-old uniform seedlings were transferred to 1.7 L pots with constantly aerated simplified nutrient solution containing 0.5 mM CaCl2, 0.5 mM KCl and 8 μM H3BO3. This solution allows optimum root elongation for short treatment. After 24 h of root growth, the pH of the solution was decreased from 5.5 to 5.0, after 48 h from 5.0 to 4.5 to avoid pH stress. The first 20 mm of the root apex was marked with permanent marker. Subsequently, plants were transferred to simplified nutrient solution containing 0 and 20 μM AlCl3. The distances from the root apex were measured after 4 h, 8 h, 24 h, 48 h and 72 h after treatment. To compensate the Al-stress, bacterium fertilizer was added to the nutrient solution 1) before the Al-treatme...
The possible role of bio-fertilizers in agriculture
Zbornik Radova 44. …, 2009
The usage of the bacteria containing fertilizers and the wood ash correspond the criteria of environmental friendly nutrient supply. Bio-fertilizer has been identified as an alternative to chemical fertilizer to increase soil fertility and crop production in sustainable farming. The objective of this study was to evaluate the effects of three bio-fertilizers containing a living and dead algae, N-fixer (Azotobacter chroococcum) and P-solubilizer (Bacillus megaterium) on the growth of plants in the laboratory under Al toxicity stress. The use of bio-fertilizer resulted in the highest biomass and increased the nutrient uptake by plants.
Four iron and aluminium-based products, including red mud (RM), hematite (Fe2O3), an iron-rich water treatment residual (Fe-WTR) and amorphous Al hydroxide (Al-OH), were evaluated for their effectiveness at stabilising As and heavy metals (i.e. Cd, Cu, Pb, Zn) in a circumneutral contaminated soil [As (2105 mg kg1), Cd (18 mg kg1), Cu (264 mg kg1), Pb (710 mg kg1), Zn (522 mg kg1)]. Treatment impacts on soil microbial and biochemical features (i.e. microbial biomass-C, microbial counts, 16S rRNA PCR-TTGE of culturable bacteria, dehydrogenase, urease and b-glucosidase activity, Biolog derived parameters-AWCD and richness) as well as bean (Phaseolus vulgaris) and wheat (Triticum vulgare) growth were also assessed. After 6 months equilibration, all the amendments (application rate 3% w/w) but RM reduced labile As while only Al-OH reduced the concentration of water-soluble heavy metals. Despite the highest bioavailability of contaminants, most of the soil microbial and biochemical features monitored (i.e. microbial biomass-C, total bacterial counts, dehydrogenase activity and AWCD) were significantly higher in the RM-soil. Bean germination was completely inhibited in RM-soil while wheat growth was similar to that of the control. The Al-OH treatment was best overall, promoting microbial abundance, diversity and activity while increasing bean and wheat growth and reducing As accumulated in plant shoots. Results suggest that Al-OH is a suitable candidate for field evaluations while the use of RM in the remediation of circumneutral or subalkaline contaminated soils should be reconsidered
Role of Biofertilizers in Plant Growth and Soil Health
2020
Biofertilizers nowadays have been realised for shifting fortunes in agriculture. It has been proven successful technology in many developed countries while in developing countries exploitation of bioinoculants is hampered by several factors. Scientific knowledge on bioinoculants and its usage will pave way for its effective usage. At the same time overlooking the significance of ensuring and maintaining a high quality standard of the product will have negative impact. Hence a proper knowledge of bioinoculants and its functioning will pave way to tape the resources in a better way. Thus the chapter provide overview knowledge about different bacterial, fungal and algal biofertilizers, its associations with plants and transformations of nutrients in soil. Adopting a rational approach to the use and management of microbial fertilizers in sustainable agriculture thrive vast potential for the future.
Effect of fertilisation on the changes of soil pH and exchangeable aluminium content in soil
Proceedings of ECOpole, 2015
We assessed the level of acidification of the soil and the content of exchangeable aluminium in relation to the type and dose of mineral fertiliser. The study was based on a vase experiment with barley of the brewery variety Propino. The results showed that mineral fertilizing with NPK combined with ammonium nitrate gave the highest acidification and the highest contents of exchangeable aluminium. Calcium sulphate applied in different doses did not change soil reaction, and the content of exchangeable aluminium was lower than when combination of NKP fertilizing and ammonium nitrate was applied.
A Review: Vital Role of Biofertilizers in Plant Growth Enhancement and Maintenance of Soil Health
Biofertilizers are also being used to help farmers change their fortunes. In several developed countries, it has proved to be a promising technology, however in developing countries; the use of bioinoculants is limited by a number of factors. Scientific understanding of bioinoculants and their use can pave the way for their successful application. A biofertilizer is a material that includes living microorganisms that colonise the rhizosphere or the interior of the plant when added to plants, plant surfaces, or soil, and foster growth by growing the supply or availability of primary nutrients to the host plant. Biofertilizers provide nutrients to plants by natural processes such as nitrogen fixation, phosphorus solubilization, and the production of growth-promoting compounds. Biofertilizers use microorganisms to maintain the soil's natural nitrogen balance and increase soil organic matter. Good plants may be cultivated through the use of biofertilizers while still improving the soil's sustainability and protection. Biofertilizers would likely limit the usage of conventional fertilizers and chemicals, but they will not be able to completely eliminate them. Plant-growth enhancing rhizobacteria is a preferred scientific name for these helpful bacteria since they perform several functions (PGPR).
Acid sulfate soils are normally not suitable for crop production unless they are appropriately ameliorated. An experiment was conducted in a glasshouse to enhance the growth of rice, variety MR219, planted on an acid sulfate soil using various soil amendments. The soil was collected from Semerak, Kelantan, Malaysia. Ground magnesium limestone (GML), bio-fertilizer, and basalt (each 4 t ha −1) were added either alone or in combinations into the soil in pots 15 d before transplanting. Nitrogen, P and potash were applied at 150, 30, and 60 kg ha −1 , respectively. Three seven-day-old rice seedlings were transplanted into each pot. The soil had a pH of 3.8 and contained organic C of 21 g kg −1 , N of 1.2 g kg −1 , available P of 192 mg kg −1 , exchangeable K of 0.05 cmolc kg −1 , and exchangeable Al of 4.30 cmolc kg −1 , with low amounts of exchangeable Ca and Mg (0.60 and 0.70 cmolc kg −1). Bio-fertilizer treatment in combination with GML resulted in the highest pH of 5.4. The presence of high Al or Fe concentrations in the control soil without amendment severely affected the growth of rice. At 60 d of growth, higher plant heights, tiller numbers and leaf chlorophyll contents were obtained when the bio-fertilizer was applied individually or in combination with GML compared to the control. The presence of beneficial bacteria in bio-fertilizer might produce phytohormones and organic acids that could enhance plant growth and subsequently increase nutrient uptake by rice. Hence, it can be concluded that addition of bio-fertilizer and GML improved rice growth by increasing soil pH which consequently eliminated Al and/or Fe toxicity prevalent in the acid sulfate soil.
Role of Biofertilizers in Agriculture- a Review
2018
With the increase in population, the demand for the crop has significantly increased which has led to extensive use of inorganic fertilizers without least consideration for soil health, which is a critical factor for realizing sustainable high yield. Besides this, the residual effects of inorganic fertilizers on environment, underground water resources and soil micro-flora, is a matter of great concern. The beneficial plant microbe interactions in the rhizosphere are the primary determinants of plant health and soil fertility and improve long term sustainability of soil. The lost biological activity in the soil, due to excess use of chemical fertilizers, can be restored slowly by incorporating artificially multiplied cultures of beneficial microorganisms in the form of biofertilizers. They produce growth promoting substances and vitamins and help to maintain soil fertility and suppress the incidence of pathogen and control diseases which ultimately results in improved yield and yiel...
Chemical and Biological Properties of Soil Affected by Biofertilizer Based Nutrient Management
International Journal of Plant & Soil Science
The present study entitled “Chemical and biological properties of soil affected by biofertilizer based nutrient management” was carried out at Vegetable Research Farm, Regional Horticultural Research Station, ASPEE College of Horticulture and Forestry, Navsari Agricultural University, Navsari, Gujarat, India during Rabi season, 2019-2020. The experiment was laid out in Randomized Block Design (RBD) with three replications, which included 10 treatments viz., T1: 75% RDN + Azospirillium (5 l ha-1), T2: 100% RDN + Azospirillium (5 l ha-1), T3: 75% RDP + PSB (5 l ha-1), T4: 100% RDP + PSB (5 l ha-1), T5: 75% RDK + KMB (5 l ha-1), T6: 100% RDK + KMB (5 l ha-1), T7: 75% RDF + Azospirillium (5 l ha-1) + PSB (5 l ha-1) + KMB (5 l ha-1), T8: 100% RDF + Azospirillium (5 l ha-1) + PSB (5 l ha-1) + KMB (5 l ha-1) , T9: 100% RDF (200:75:37.5) NPK kg ha-1 and T10: Azospirillium (5 l ha-1) + PSB (5 l ha-1) + KMB (5 l ha-1) to find out the response of bio-fertilizer based nutrient management in c...
IOP Conference Series: Earth and Environmental Science
The greenhouse experiment was carried out to study the effect of biofertilizer combined with organic or inorganic fertilizer on the growth of Caesalpinia pulcherrima and bacterial population in the soil. Biofertilizers including Azotobacter sp. (mixture of 5 isolates) Azospirillum sp. (mixture of 5 isolates) and Rhizobium sp. (mixture of 5 isolates), were applied with organic fertilizer (Palm Oil Mill Effluent/POME) or inorganic fertilizer (Muller Solution/MS) were laid out in Randomized Complete Block Design (RCBD) with three replicates. The result showed that plants which were inoculated with biofertilizer (Azotobacter, Azospirillum, and Rhizobium) showed better growth compared than control treatment. Plants treated with a combination of biofertilizers with POME or MS had higher growth than plants treated with organic or inorganic fertilizers individually. The application of an organic fertilizer on plant showed more excellent plants' growth than the usage of organic fertilizer. However, there were no significant differences in plant growth between POME and MS combined with biofertilizer. Biofertilizer combined with organic fertilizer combination produced higher bacterial population than inorganic fertilizer combination.