Determining the Association between Aeration in the Rhizosphere and P-Acquisition Strategies: Constructing Efficient Vegetable Root Morphology | Chapter 6 | Current Advances in Geography, Environment and Earth Sciences Vol. 6

 One of the major challenges limiting vegetable output is a low P absorption and use rate. The short root systems of vegetables and the soil's immobility of P exacerbated the imbalance between P supply and demand in the vegetable rhizosphere. In order to maintain a high P content in the root zone, phosphate fertiliser was applied in large quantities in vegetable fields. This resulted in the deterioration of the soil O2 environment and the vegetable rhizosphere environment, which had an impact on the root morphological structure and vegetable yield. However, it is uncommon to find reports on the interactions between root shape and rhizosphere oxygen environment responses to vegetable P utilisation. We carried out an experiment utilising different concentrations of O2 generator, 10%, 30%, 50%, and 80% urea hydrogen peroxide (as pure nitrogen) instead of urea as a top dressing in the rhizosphere to investigate the impact on root shape, P adsorption, and its mechanism. We found that the rhizosphere had areas where oxygen and phosphorus were insufficient, and that oxygenation might lower the roots' rhizosphere O2 and phosphorus consumption. In the 30% urea hydrogen peroxide treatment compared to CK, the P consumption efficiency was improved by 9.3% and the shoot P accumulation by 10.9% due to the characteristics of the root morphology and increased availability of P in the rhizosphere. This process also improved quality and yield, as well as the quantity of soluble sugar and vitamin C. However, at a greater O2 level (260.8 mol L1), vegetable development demonstrated O2 damage, resulting in a poorer yield and lower quality. In order to increase the effectiveness of P utilisation in vegetable fields and improve vegetable output and quality, our research provided new insights into how to create effective root morphology by managing the rhizosphere's O2 environment.

Author(s) Details:

Rui Wang,
State Key Laboratory of Soil and Sustainable Agriculture, Institute of Soil Science, Chinese Academy of Sciences, Nanjing, China and University of Chinese Academy of Sciences, Beijing, China.

Weiming Shi,
State Key Laboratory of Soil and Sustainable Agriculture, Institute of Soil Science, Chinese Academy of Sciences, Nanjing, China.

Yilin Li,
State Key Laboratory of Soil and Sustainable Agriculture, Institute of Soil Science, Chinese Academy of Sciences, Nanjing, China.

Please see the link here: https://stm.bookpi.org/CAGEES-V6/article/view/8264

Studies and Investigations on Various Aspects of Aerobic and Anaerobic Treatments for Sewage and Industrial Effluent | Chapter 1 | New Innovations in Chemistry and Biochemistry Vol. 5

 Aerobic and anaerobic treatments can reduce wastewater's oxygen consumption. Activated sludge, trickling filters, and advanced oxidation processes are examples of aerobic treatments. Aerobic systems have higher initial expenses for aeration equipment, as well as higher operational and maintenance costs. For sewage treatment, anaerobic treatments have a number of advantages. Up flow anaerobic sludge blanket reactors are one of the most essential treatment technologies. This approach has high conversion rates and is cost-effective. In addition, a high percentage of methane in the generated gas adds value. Anaerobic technologies have the advantage of a smaller reactor size and less biomass output. Anaerobic treatment is harmed by the presence of oil and grease. Anaerobic therapies are best for very high organic loading, while aerobic treatments are best for modest organic loading. This chapter delves into the research and studies that have been conducted on these treatments.

Author(S) Details

Sunil Jayant Kulkarni
Gharda Institute of Technology, Lavel, Maharashtra, India.

Ajaygiri Kamalgiri Goswami
University Institute of Chemical Technology KBC North Maharashtra University, Jalgaon, Maharashtra, India.

View Book:- https://stm.bookpi.org/NICB-V5/article/view/5142