scholarly journals Assessing the Impact of Rice Cultivation and Off-Season Period on Dynamics of Soil Enzyme Activities and Bacterial Communities in Two Agro-Ecological Regions of Mozambique

Agronomy ◽  
2021 ◽  
Vol 11 (4) ◽  
pp. 694
Author(s):  
Obinna Ezeokoli ◽  
Valter Nuaila ◽  
Chinedu Obieze ◽  
Belo Muetanene ◽  
Irene Fraga ◽  
...  
Keyword(s):  
Enzyme Activities ◽  
Bacterial Communities ◽  
Soil Health ◽  
Soil Enzyme ◽  
Rice Cultivation ◽  
Health Determinants ◽  
Soil Productivity ◽  
Plant Growth Promoting Bacteria ◽  
Soil Enzyme Activities ◽  
The Impact

Soil ecosystem perturbation due to agronomic practices can negatively impact soil productivity by altering the diversity and function of soil health determinants. Currently, the influence of rice cultivation and off-season periods on the dynamics of soil health determinants is unclear. Therefore, soil enzyme activities (EAs) and bacterial community compositions in rice-cultivated fields at postharvest (PH) and after a 5-month off-season period (5mR), and fallow-fields (5-years-fallow, 5YF; 10-years-fallow, 10YF and/or one-year-fallow, 1YF) were assessed in two agroecological regions of Mozambique. EAs were mostly higher in fallow fields than in PH, with significant (p < 0.05) differences detected for β-glucosidase and acid phosphatase activities. Only β-glucosidase activity was significantly (p < 0.05) different between PH and 5mR, suggesting that β-glucosidase is responsive in the short-term. Bacterial diversity was highest in rice-cultivated soil and correlated with NO3−, NH4+ and electrical conductivity. Differentially abundant genera, such as Agromyces, Bacillus, Desulfuromonas, Gaiella, Lysobacter, Micromonospora, Norcadiodes, Rubrobacter, Solirubrobacter and Sphingomonas were mostly associated with fallow and 5mR fields, suggesting either negative effects of rice cultivation or the fallow period aided their recovery. Overall, rice cultivation and chemical parameters influenced certain EAs and shaped bacterial communities. Furthermore, the 5-month off-season period facilitates nutrient recovery and proliferation of plant-growth-promoting bacteria.

Pyrosequencing Reveals Soil Enzyme Activities and Bacterial Communities Impacted by Graphene and Its Oxides

2017 ◽  
Vol 65 (42) ◽  
pp. 9191-9199 ◽  
Author(s):  
Yan Rong ◽  
Yi Wang ◽  
Yina Guan ◽  
Jiangtao Ma ◽  
Zhiqiang Cai ◽  
...  
Keyword(s):  
Enzyme Activities ◽  
Bacterial Communities ◽  
Soil Enzyme ◽  
Soil Enzyme Activities

scholarly journals Impact of nanophos in agriculture to improve functional bacterial community and crop productivity

2021 ◽  
Vol 21 (1) ◽  
Author(s):  
Parul Chaudhary ◽  
Anuj Chaudhary ◽  
Heena Parveen ◽  
Alka Rani ◽  
Govind Kumar ◽  
...  
Keyword(s):  
Enzyme Activities ◽  
Microbial Population ◽  
Soil Nutrient ◽  
Soil Enzyme ◽  
Polluted Water ◽  
Soil Enzyme Activities ◽  
Treated Soil ◽  
Soil Microbial Population ◽  
The Impact ◽  
Soil Protein

Abstract Background Since the World’s population is increasing, it’s critical to boost agricultural productivity to meet the rising demand for food and reduce poverty. Fertilizers are widely used in traditional agricultural methods to improve crop yield, but they have a number of negative environmental consequences such as nutrient losses, decrease fertility and polluted water and air. Researchers have been focusing on alternative crop fertilizers mechanisms to address these issues in recent years and nanobiofertilizers have frequently been suggested. “Nanophos” is a biofertilizer and contains phosphate-solubilising bacteria that solubilises insoluble phosphate and makes it available to the plants for improved growth and productivity as well as maintain soil health. This study evaluated the impact of nanophos on the growth and development of maize plants and its rhizospheric microbial community such as NPK solubilising microbes, soil enzyme activities and soil protein under field condition after 20, 40 and 60 days in randomized block design. Results Maize seeds treated with nanophos showed improvement in germination of seeds, plant height, number of leaves, photosynthetic pigments, total sugar and protein level over control. A higher activity of phenol, flavonoid, antioxidant activities and yield were noticed in nanophos treated plants over control. Positive shift in total bacterial count, nitrogen fixing bacteria, phosphate and potassium solubilizers were observed in the presence of nanophos as compared to control. Soil enzyme activities were significantly (P < 0.05) improved in treated soil and showed moderately correlation between treatments estimated using Spearman rank correlation test. Real time PCR and total soil protein content analysis showed enhanced microbial population in nanophos treated soil. Obtained results showed that nanophos improved the soil microbial population and thus improved the plant growth and productivity. Conclusion The study concluded a stimulating effect of nanophos on Zea mays health and productivity and indicates good response towards total bacterial, NPK solubilising bacteria, soil enzymes, soil protein which equally showed positive response towards soil nutrient status. It can be a potential way to boost soil nutrient use efficiency and can be a better alternative to fertilizers used in the agriculture.

No Significant Impact of Transgenic Cry1Ab/1Ac Cotton on Rhizosphere-Soil Enzyme Activities and Bacterial Communities

2017 ◽  
Vol 109 (4) ◽  
pp. 1271-1279
Author(s):  
Ming Xie ◽  
Yan-Jun Zhang ◽  
De-Liang Peng ◽  
Qian Li ◽  
Xin-Ping Hu ◽  
...  
Keyword(s):  
Enzyme Activities ◽  
Bacterial Communities ◽  
Rhizosphere Soil ◽  
Soil Enzyme ◽  
Soil Enzyme Activities

scholarly journals Fractions of Ni, Pb, Cr, and Their Impact on Enzyme Activities of Arable Land Cultivated by the Simplified Method

Minerals ◽  
2021 ◽  
Vol 11 (6) ◽  
pp. 584
Author(s):  
Adam Łukowski ◽  
Dorota Dec
Keyword(s):  
Phosphatase Activity ◽  
Enzyme Activities ◽  
Arable Land ◽  
Soil Enzyme ◽  
Metal Availability ◽  
Soil Enzyme Activities ◽  
Bcr Method ◽  
Study Results ◽  
Simplified Method ◽  
The Impact

Total metal content is not representing its availability and thus does not provide the details about potential environmental hazards, including the impact on soil enzyme activities. To understand metal availability, chemical fractions must be considered. The goal of this study was to evaluate the influence of Ni, Cr, and Pb fractions on the enzymatic activity of soils cultivated by the simplified method, which is rare not only in Poland. The percentage of studied metals in fractions was determined according to the Community Bureau of Reference (BCR) method. Four fractions were extracted: acid soluble and exchangeable (F1), reducible (F2), oxidizable (F3), and residual (F4). The highest Ni and Cr percentages were noted in fraction F4, and for Pb, they were noted in fraction F2. The smallest Ni and Pb percentages were observed in fraction F1 (most mobile) and for Cr, they were observed in fraction F2. In soil samples collected in spring, the significant relationship was stated between F1/Ni/dehydrogenase, F2/Pb/dehydrogenase, and F2/Pb/urease. Such dependence occurred between F1/Ni/phosphatase and F4/Ni/urease during summer as well as between F1/Ni/phosphatase and F4/Ni/dehydrogenase in autumn. F1/Pb caused a drop in phosphatase activity, whereas F4/Cr influenced its increase. The study results indicated that metal fractions influenced phosphatase activity the most, while protease activity in the soil was not affected.

Soil Enzyme Activities as Biological Indicators of Soil Health

2003 ◽  
Vol 18 (1) ◽  
Author(s):  
Itziar Alkorta ◽  
Ana Aizpurua ◽  
Patrick Riga ◽  
Isabel Albizu ◽  
Ibone Amézaga ◽  
...  
Keyword(s):  
Enzyme Activities ◽  
Soil Health ◽  
Biological Indicators ◽  
Soil Enzyme ◽  
Soil Enzyme Activities

Soil enzyme activities under the impact of long-term pollution from mining-metallurgical copper production

2020 ◽  
Vol 101 ◽  
pp. 103232
Author(s):  
Jelena S. Milosavljevic ◽  
Snezana M. Serbula ◽  
Djuro M. Cokesa ◽  
Dragan B. Milanovic ◽  
Ana A. Radojevic ◽  
...  
Keyword(s):  
Enzyme Activities ◽  
Soil Enzyme ◽  
Copper Production ◽  
Soil Enzyme Activities ◽  
The Impact
Sign in / Sign up

Export Citation Format

Share Document