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   Zhang, Ping ; Liao, Wenyu ; Kumar, Aditya ; Zhang, Qian ; Ma, Hongyan ( December 2020 , Journal of Cleaner Production)
2. Estimating reaction kinetics of cementitious pastes containing fly ash

   https://doi.org/10.1016/j.cemconcomp.2020.103655  

   Glosser, Deborah ; Suraneni, Prannoy ; Isgor, O. Burkan ; Weiss, W. Jason ( September 2020 , Cement and Concrete Composites)
3. Volcanic Ash Tempered Pottery Production in the Late to Terminal Classic Belize Valley, Belize

   https://doi.org/10.1017/laq.2022.11  

   Jordan, Jillian M. ; Davenport, James A. ; Goodwin, Whitney A. ; MacDonald, Brandi L. ; Ebert, Claire E. ; Hoggarth, Julie A. ; Awe, Jaime J. ( January 2022 , Latin American Antiquity)

   La producción y el consumo de cerámica con vidrio volcánico alcanzó su punto máximo en las Tierras Bajas Mayas durante elos periodos Clásico Tardío al Terminal. Explicaciones por estas cerámicas varían. Diferencias en el tipo de inclusiones volcánicas y forma indican que la cerámica fue producida en lugares múltiples por grupos diferentes de alfareros. Analizamos cerámica de contextos domésticos en Baking Pot, Belice, utilizando la petrográfia y el análisis por activación de neutrónica (NAA) para documentar la variabilidad y determinar la procedencia. La cerámica se produjo con vidrio volcánica fresca y una arcilla micrítica. Los datos petrográficos y químicos indican la cerámica se produjo localmente en el Valle de Belice. Es probable que la variación se debe tanto a las diferencias de producción como a la alteración post-deposicional. Es fundamental utilizar ambas técnicas analíticas para comprender la producción y la procedencia de las cerámicas en las Tierras Bajas Mayas. 

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4. Elucidating the atomic structures of different sources of fly ash using X-ray and neutron PDF analysis

   https://doi.org/10.1016/j.fuel.2016.03.017  

   Natali, Maria Elia ; White, Claire E. ; Bignozzi, Maria Chiara ( August 2016 , Fuel)

   null (Ed.)
5. Temporally Selective Modification of the Tomato Rhizosphere and Root Microbiome by Volcanic Ash Fertilizer Containing Micronutrients

   https://doi.org/10.1128/aem.00049-22  

   Mehlferber, Elijah C. ; McCue, Kent F. ; Ferrel, Jon E. ; Koskella, Britt ; Khanna, Rajnish ( April 2022 , Applied and Environmental Microbiology)

   Semrau, Jeremy D. (Ed.)

   ABSTRACT Food crops are grown with fertilizers containing nitrogen, phosphorus, and potassium (macronutrients) along with magnesium, calcium, boron, and zinc (micronutrients) at different ratios during their cultivation. Soil and plant-associated microbes have been implicated to promote plant growth, stress tolerance, and productivity. However, the high degree of variability across agricultural environments makes it difficult to assess the possible influences of nutrient fertilizers on these microbial communities. Uncovering the underlying mechanisms could lead us to achieve consistently improved food quality and productivity with minimal environmental impacts. For this purpose, we tested a commercially available fertilizer (surface-mined volcanic ash deposit Azomite) applied as a supplement to the normal fertilizer program of greenhouse-grown tomato plants. Because this treatment showed a significant increase in fruit production at measured intervals, we examined its impact on the composition of below-ground microbial communities, focusing on members identified as “core taxa” that were enriched in the rhizosphere and root endosphere compared to bulk soil and appeared above their predicted neutral distribution levels in control and treated samples. This analysis revealed that Azomite had little effect on microbial composition overall, but it had a significant, temporally selective influence on the core taxa. Changes in the composition of the core taxa were correlated with computationally inferred changes in functional pathway enrichment associated with carbohydrate metabolism, suggesting a shift in available microbial nutrients within the roots. This finding exemplifies how the nutrient environment can specifically alter the functional capacity of root-associated bacterial taxa, with the potential to improve crop productivity. IMPORTANCE Various types of soil fertilizers are used routinely to increase crop yields globally. The effects of these treatments are assessed mainly by the benefits they provide in increased crop productivity. There exists a gap in our understanding of how soil fertilizers act on the plant-associated microbial communities. The underlying mechanisms of nutrient uptake are widely complex and, thus, difficult to evaluate fully but have critical influences on both soil and plant health. Here, we presented a systematic approach to analyzing the effects of fertilizer on core microbial communities in soil and plants, leading to predictable outcomes that can be empirically tested and used to develop simple and affordable field tests. The methods described here can be used for any fertilizer and crop system. Continued effort in advancing our understanding of how fertilizers affect plant and microbe relations is needed to advance scientific understanding and help growers make better-informed decisions. 

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