Are microbial communities indicators of soil health in a dryland wheat cropping system?

2022 ◽  
Vol 170 ◽  
pp. 104302
Author(s):  
Daniel C. Schlatter ◽  
Jeremy Hansen ◽  
Bryan Carlson ◽  
Ian N. Leslie ◽  
David R. Huggins ◽  
...  
Keyword(s):  
Microbial Communities ◽  
Soil Health ◽  
Cropping System

scholarly journals Effect of Fungicide Application on Lowbush Blueberries Soil Microbiome

2021 ◽  
Vol 9 (7) ◽  
pp. 1366
Author(s):  
Austin W. Lloyd ◽  
David Percival ◽  
Svetlana N. Yurgel
Keyword(s):  
Microbial Communities ◽  
Combined Treatment ◽  
Soil Health ◽  
Cropping System ◽  
Soil Nutrient ◽  
Amplicon Sequencing ◽  
Soil Microbiome ◽  
Nutrient Cycles ◽  
Eastern Canada ◽  
The Impact

Lowbush blueberries (Vaccinium sp.) are perennial crops produced throughout eastern Canada and Maine through management of wild populations. Given the constraints of this cropping system, the application of fungicides is critical to reducing disease pressure and ensuring consistent yields. However, as plant health is intertwined with soil health, it is important to consider the impact of fungicides on microbial communities. To understand the effects of fungicides in this context, bacterial and fungal microbial communities from fungicide-treated plots, as well as untreated control plots (UTG) were analyzed using amplicon sequencing. The fungicides, considered collectively as a combined treatment group (CTG), lead to a loss in fungal richness. One family, Clavariaceae, had an increased abundance under prothioconazole relative to UTG. This finding may be significant as taxa in Clavariaceae have been thought to potentially form ericoid mycorrhizae with Vaccinium. Five functional pathways and 74 enzymes differed significantly in relative abundance between CTG and UTG including enzymes associated with soil nutrient cycles. Most notably, enzymes corresponding to the breakdown of halogen-organic compounds had an increased abundance in CTG, suggesting bacterial fungicide degradation. Some enzymes associated with soil nutrient cycles differed significantly, possibly implying changes to nutrient pathways due to fungicide treatment.

scholarly journals Effect of three different agronomic conditions on biochemical profile and diversity in the rhizosphere of banana plantations infected with Fusarium oxysporum Race 1

2021 ◽  
Vol 27 (2) ◽  
Author(s):  
Katherine Sánchez-Zúñiga ◽  
◽  
Ana Tapia-Fernández ◽  
William Eduardo Rivera-Méndez ◽  
◽  
...  
Keyword(s):  
Microbial Communities ◽  
Management Practices ◽  
Soil Health ◽  
Chemical Properties ◽  
Principal Component ◽  
Exchange Capacity ◽  
High Fertility ◽  
Fertility Level ◽  
Biochemical Profile ◽  
Agronomic Conditions

Soil microorganisms play an important role as a link in the transfer of nutrients from the rhizosphere. The physical and chemical properties of soil, the metabolic profiles of microbial communities and different crop management practices can enhance our understanding of hizospheric interactions. This study aimed to establish differences in microbial communities associated with banana crops and the biochemical profile in farms under different agronomic conditions. Seven farms with different levels of intervention, management, and fusariosis severity were analyzed. The biochemical profile of the microbial community was determined using EcoPlates and the main substrates consumed by the microbial communities were identified through multivariate principal component analysis (PCA). Seven microorganisms were selected as indicators of nutrient cycles, pathogenicity and soil health. Also, soil chemical indicators were determined through a complete mineral analysis. For the physiological profile of soil microbial populations, it was observed that farms with the same management tend to be metabolically very similar. In the PCA, two principal components explained 90 % of the variance in the data. It was also determined that the genus Bacillus is predominant in all farms and that farm 4 (medium intervention) presented the most favorable values in all factors analyzed. The effective cation exchange capacity values are highlighted in the chemical analyses, which determined that all farms have a high fertility level. The metabolic profile, diversity and richness of each of the different farms were affected by the type of agronomic management used.

scholarly journals Soil Health as Influenced by Fertilizer Management in Rice Based Cropping System

2021 ◽  
Vol 24 (2) ◽  
pp. 119-131
Author(s):  
MM Haque ◽  
MR Islam ◽  
MS Rahman ◽  
MAR Sarkar ◽  
MAA Mamun ◽  
...  
Keyword(s):  
Crop Production ◽  
Nutrient Management ◽  
Soil Health ◽  
Cropping System ◽  
Crop Productivity ◽  
Cow Dung ◽  
Wet Season ◽  
Management Options ◽  
Cropping Patterns ◽  
Soil C

Nutrient management influences soil health and crop productivity. Sustained crop production re-quires specific nutrient management options after a certain period. The objectives of this investigation were to examine the effects of inorganic and organic fertilization on yields and soil carbon budget under rice based cropping patterns in Bangladesh. The research data and informationhave been gen-erated based on previouslypublished, unpublished sources and own concept.Omission of K or im-balanced K are more influential for reduction in grain yield up to 47% in Boro (dry) season but N was most limiting up to 35% in T. Aman (wet) season. With existing fertilizer rates for growing rice, the balances of N and K are always negative. Balanced chemical fertilizer (NPKSZn) can be an option for improving crop productivity and maintain soil quality. Net ecosystem carbon (C) balances are posi-tive when 3 t ha-1 cow dung (CD), 2 t ha-1 poultry manure (PM) and 2 t ha-1 vermicompost (VC) are used in combination with chemical fertilizers. Soil amendments with organic nutrient sources (rice straw, CD, PM, VC, legume crops) and rice based cropping patterns such as T. Aman-Mustard-Boro, Boro-Fallow-Fallow, Jute-T. Aman-Fallow, Wheat-Mungbean-T. Aman, Grass pea- T. Aus-T. Aman and Potato-Boro-T. Aman can be beneficial in improving soil C budget, soil nutrient ratio, total crop production and maintenance of environmental health that will meet SDGs goal. Bangladesh Rice J. 24 (2): 119-131, 2021

Effect of long-term nutrient management practices on soil health and paddy yield of rice-rice-fallow cropping system in tropic humid climate

2021 ◽  
Vol 107 ◽  
pp. 103362
Author(s):  
Umme Aminun Naher ◽  
Md Mozammel Haque ◽  
Faruk Hossain Khan ◽  
Md Imran Ullah Sarkar ◽  
Tahmid Hossain Ansari ◽  
...  
Keyword(s):  
Management Practices ◽  
Nutrient Management ◽  
Soil Health ◽  
Cropping System ◽  
Humid Climate ◽  
Paddy Yield

Cropping management in a livestock‐pasture‐crop integration modifies microbial communities, activity, and soil health score

2021 ◽  
Author(s):  
Dorothy S. Menefee ◽  
Harold Collins ◽  
Douglas Smith ◽  
Richard Lee Haney ◽  
Phillip Fay ◽  
...  
Keyword(s):  
Microbial Communities ◽  
Soil Health ◽  
Health Score

scholarly journals Microbial Communities Associated With Long-Term Tillage and Fertility Treatments in a Corn-Soybean Cropping System

2020 ◽  
Vol 11 ◽  
Author(s):  
Ali Y. Srour ◽  
Hala A. Ammar ◽  
Arjun Subedi ◽  
Mirian Pimentel ◽  
Rachel L. Cook ◽  
...  
Keyword(s):  
Microbial Communities ◽  
Cropping System ◽  
Fertility Treatments

scholarly journals Effect of Rice Residue Retention and Foliar Application of K on Water Productivity and Profitability of Wheat in North West India

Agronomy ◽  
2020 ◽  
Vol 10 (3) ◽  
pp. 434 ◽  
Author(s):  
Raj Pal Meena ◽  
Karnam Venkatesh ◽  
Rinki Khobra ◽  
S. C. Tripathi ◽  
Kailash Prajapat ◽  
...  
Keyword(s):  
Foliar Application ◽  
Water Productivity ◽  
Soil Health ◽  
Cropping System ◽  
Large Area ◽  
North West ◽  
Net Returns ◽  
Relative Water ◽  
Use Efficiency ◽  
Residue Retention

The rice–wheat cropping system being the backbone of food security in South-Asia has resulted in soil health deterioration, declining water table, and air pollution affecting livability index of the region. The effect of rice residue retention (RRR), irrigation levels and foliar application of K on wheat grain yield (GY), water use efficiency (WUE) and profitability was tested over three years. RRR increased wheat GY (5224 kg ha−1), above-ground biomass (AGBM = 11.9 t ha−1), tillers per square meter (TPM = 469) and grains per meter square (GrPMS = 13,917) significantly. Relative water content (RWC = 93.8) and WUE (2.45 k gm−3) were also increased significantly by RRR. Consequently, profitability (Net return = 624.4 $ and Benefit to cost (B:C) ratio) was enhanced. Foliar application of K enhanced GY (5151 kg ha−1), AGBM (12 t ha−1), RWC (94.1), SPAD (52.2), WUE (2.40 kg m−3), net returns (625.2 $) and BC ratio (1.62) significantly. RRR increased GY (15.66%) and WUE (17.39%) with additional revenue of 151 $ with only one irrigation at the CRI stage (ICS). RRR adopted over 10% of the area can earn 187 million-US$ annually. RRR if adopted over existing practice on a large area would reduce environmental degradation with an enhanced income to small and marginal farmers.

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