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📺 Plant research seals importance of microbes for survival and growth

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Submitted by Elsewhere on 2020-Nov-23 Mon 15:27
2020-Nov-23 Mon 15:27

Scientists have revealed that plants have a ‘sealing’ mechanism supported by microbes in the root that are vital for the intake of nutrients for survival and growth. Plant Scientists from the Future Food Beacon at the University of Nottingham have demonstrated that the mechanism controlling the root…

📄 Microorganisms and biological pest control

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Submitted by Elsewhere on 2020-Nov-18 Wed 09:07
2020-Nov-18 Wed 09:07

The use of microorganisms for biological pest control as biological control agents (BCAs) and biopesticides was developed worldwide in the 1960s. Despite the abundance of reviews published on this topic, no meta-analysis using bibliometric tools has been published. The objective of a new study was to…

Response of Soil Microbes and Soil Enzymatic Activity to 20 Years of Fertilization

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Submitted by Elsewhere on 2020-Oct-10 Sat 14:04
2020-Oct-10 Sat 14:04

Fertilization is a worldwide agricultural practice used in agronomy to increase crop yields. Fertilizer application influences overall soil characteristics, including soil microbial community composition and metabolic processes mediated by microbial enzymatic activity. Changes in the structure of microbial communities and their metabolic activity after long-term fertilization were studied in this research. We hypothesized that the different types of fertilization regimes affect nutrient levels in the soil which subsequently influence the metabolic processes and microbial diversity and community structure. Manure (MF; 330 kg N/ha), sewage sludge at two application doses (SF; 330 kg N/ha and SF3x; 990 kg N/ha) and chemical (NPK; N-P-K nutrients in concentrations of 330-90-300 kg/ha) fertilizers have been applied regularly to an experimental field since 1996. The microbial diversity increased in all soils amended with both organic (MF, SF, SF3x) and chemical (NPK) fertilizers. The shifts in microbial communities were observed, which were mainly caused by less abundant genera that were mostly associated with one or more fertilization treatment(s). Fertilization also influenced soil chemistry and the activity of β-xylosidase, β-N-acetylglucosaminidase (NAG), acid phosphatase and FDA-hydrolases. Specifically, all fertilization treatments were associated with a higher activity of β xylosidase and lower NAG activity.

Effects of Bacillus subtilis and Pseudomonas fluorescens Inoculation on Attributes of the Lettuce Soil Rhizosphere Microbial Community: The Role of the Management System

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Submitted by Elsewhere on 2020-Sep-19 Sat 08:00
2020-Sep-19 Sat 08:00

Inoculation with beneficial microbes has been proposed as an effective practice for the improvement of plant growth and soil health. Since soil acts as a physicochemical background for soil microbial communities, we hypothesized that its management will mediate the effects of microbial inoculants on the indigenous soil microbes. We examined the effects of bacterial inoculants [Bacillus subtilis (Ba), Pseudomonas fluorescens (Ps), and both (BaPs)] on the growth of Lactuca sativa cultivated in soils that originated from an organic maize (OS) and a conventional barley (CS) management system. Moreover, the biomass and the community structure of the rhizosphere microbial communities and the soil enzyme activities were recorded. The root weight was higher in CS than OS, while the foliage length was greater in OS than CS treatments. Only in OS pots, inoculants resulted in higher biomasses of bacteria, fungi, and actinomycetes compared to the control with the highest values being recorded in Ps and BaPs treated soils. Furthermore, different inoculants resulted in different communities in terms of structure mainly in OS soils. For soil enzymes, the effect of the management system was more important due to the high organic matter existing in OS soils. We suggest that for microbial inoculation to be effective it should be considered together with the management history of the soil.

Microbial enriched growing media

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Submitted by Elsewhere on 2020-Aug-24 Mon 09:40
2020-Aug-24 Mon 09:40

The biological suppression of common plant diseases increasingly becomes the preferred alternative to chemical plant protection. Adding biostimulants to a growing medium can induce the required suppressing effects. Based on long-term research, Klasmann-Deilmann has developed TerrAktiv PLUS, a unique constituent consisting of…

'Microorganisms can be a great tool to achieve more efficient agriculture'

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Submitted by Elsewhere on 2020-Aug-13 Thu 10:08
2020-Aug-13 Thu 10:08

A research project developed by Ideagro to reduce the application of fertilizers in agriculture through the contribution of microorganisms is obtaining important results in melon, tomato, broccoli, apricot, and citrus crops in an experimental farm located in the Murcian district of Yechar. The Minister…

Researchers discover how plants distinguish beneficial from harmful microbes

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Submitted by Elsewhere on 2020-Aug-11 Tue 09:38
2020-Aug-11 Tue 09:38

Legume plants know their friends from their enemies, and now, researchers found how they do it at the molecular level. Plants recognize beneficial microbes and keep harmful ones out, which is important for healthy plants production and global food security. Scientists have now discovered how legumes use…