Redox cycling of sulfur via microbes in soil boosts the bioavailability of nutrients to Brassica napus
Contact us if these videos are not relevant.
Contact us if these videos are not relevant.
View abstract on PubMed
Summary
This summary is machine-generated.Microbial inoculation with sulfur-oxidizing bacteria (SOB) and sulfur-reducing bacteria (SRB) significantly enhances soil nutrient bioavailability and crop yield. This approach, combined with half NPK fertilizer, boosts soil and plant nutrient levels more effectively than full NPK alone.
Area Of Science
- Agricultural Microbiology: Focuses on the role of microorganisms in soil nutrient cycling and plant growth.
- Soil Science: Investigates the impact of microbial activity on soil properties and nutrient availability.
- Plant Nutrition: Examines how sulfur and other nutrients influence crop development and yield.
Background
- Sulfur (S) deficiency is a major limiting factor for both dry and wetland plant growth.
- Sulfur-oxidizing bacteria (S-oxidizers) improve S oxidation and sulfate (SO4²⁻) production, crucial for plant nutrient uptake.
- Understanding microbial redox reactions is key to enhancing soil nutrient bioavailability and crop productivity.
Purpose Of The Study
- To assess the effectiveness of microbial redox reactions in improving soil nutrient bioavailability.
- To evaluate the impact of sulfur-oxidizing bacteria (SOB) and sulfur-reducing bacteria (SRB) on canola (Brassica napus) growth.
- To determine optimal microbial and NPK fertilizer combinations for enhanced crop yield.
Main Methods
- Isolation and screening of SOB strains based on pH reduction in thiosulphate broth.
- Characterization of SRB based on their anaerobic metabolism of sulfate reduction.
- A pot experiment evaluating canola growth under various treatments: Control, ½ NPK, Full NPK, ½ NPK+SOB, ½ NPK+SRB, and ½ NPK+SOB+SRB.
Main Results
- The treatment with ½ NPK + SOB + SRB significantly increased soil N, P, K, and SO₄ levels by 15.9%, 38%, 2.0%, and 72%, respectively, compared to full NPK.
- This combination also boosted plant N, K, and SO₄ content by 7.7%, 31%, and 239%, respectively.
- The greatest soil pH reduction (4%) was observed with ½ NPK + SOB, indicating enhanced microbial activity.
Conclusions
- Microbial inoculation, particularly with a consortium of SOB and SRB, significantly enhances soil nutrient bioavailability.
- Combining microbial inoculants with reduced NPK fertilizer rates (½ NPK) can achieve superior nutrient availability and crop growth compared to full NPK alone.
- This integrated approach offers a sustainable strategy for improving crop nutrition and yield in agricultural systems.
Contact us if these videos are not relevant.
Contact us if these videos are not relevant.
Related Concept Videos
Sulfur, an important element in the chemical makeup of proteins, is recycled through the atmosphere and aquatic and terrestrial environments. Found in the atmosphere as sulfur dioxide (SO2), sulfur is released by decaying organisms, weathered rocks, geothermal vents, volcanos, and burning fossil fuels. It is deposited into the ecosystem, cycled through the biotic community, and either released back into the atmosphere as gas or deposited in marine sediment for long-term storage and eventual...
Bioremediation is the use of prokaryotes, fungi, or plants to remove pollutants from the environment. This process has been used to remove harmful toxins in groundwater as a byproduct of agricultural run-off and also to clean up oil spills.
Agricultural Bioremediation
Bioremediation is a useful process in which microbes and bacteria are used to remove toxins and pollutants from the environment. In agricultural practices, the use of fertilizers and pesticides can result in leaching of...
Plants have the impressive ability to create their own food through photosynthesis. However, plants often require assistance from organisms in the soil to acquire the nutrients they need to function correctly. Both bacteria and fungi have evolved symbiotic relationships with plants that help the species to thrive in a wide variety of environments.
The collective bacteria residing in and around plant roots are termed the rhizosphere. These soil-dwelling bacterial species are incredibly diverse....
Ribulose 1,5- bisphosphate carboxylase/oxygenase (RuBisCo) is a critical enzyme that catalyzes carbon dioxide assimilation during photosynthesis. However, it is an inefficient enzyme, having an extremely slow catalytic rate. A typical enzyme can process about a thousand molecules per second; however, RuBisCo fixes only around three-carbon dioxides per second. Photosynthetic cells compensate for this slow rate by synthesizing very high amounts of RuBisCo, making it the most abundant single...
Like all living organisms, plants require organic and inorganic nutrients to survive, reproduce, grow and maintain homeostasis. To identify nutrients that are essential for plant functioning, researchers have leveraged a technique called hydroponics. In hydroponic culture systems, plants are grown—without soil—in water-based solutions containing nutrients. At least 17 nutrients have been identified as essential elements required by plants. Plants acquire these elements from the...
Nitrogen atoms, present in all proteins and DNA, are recycled between abiotic and biotic components of the ecosystem. However, the primary form of nitrogen on Earth is nitrogen gas, which cannot be used by most animals and plants. Thus, nitrogen gas must first be converted into a usable form by nitrogen-fixing bacteria before it can be cycled through other living organisms. The use of nitrogen-containing fertilizers and animal waste products in human agriculture has greatly influenced the...