Výsledky vyhledávání - "Daniel C. Olk"

Akademický článek

Maize Growth Responses to a Humic Product in Iowa Production Fields: An Extensive Approach

Autor: Daniel C. Olk, Dana L. Dinnes, Chad R. Callaway

Publikováno v: Frontiers in Plant Science, Vol 12 (2022)

Field evaluations of commercial humic products have seldom involved replication across location or year. To evaluate the consistency of humic product efficacy in field conditions, we determined the effects of a humic product on maize (Zea mays L.) gr

Externí odkaz: https://doaj.org/article/2e11508d657446e0a16e6191491b701b

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Akademický článek

Tree Species of Wet Tropical Forests Differ in Their Tissue Biochemistry and Effects on Soil Carbon Dynamics

Autor: Ann E. Russell, Rachel F. Marek, Daniel C. Olk

Publikováno v: Frontiers in Forests and Global Change, Vol 4 (2021)

Given the hypothesized effects on soil organic matter (SOM) of polyphenols in plant tissues, differences among tree species in their biochemical composition could influence the turnover and accrual of SOM in various ways. The extent to which the bioc

Externí odkaz: https://doaj.org/article/419f54839bc2482c99cec7363435da4c

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Akademický článek

Maize Growth and Grain Yield Responses to a Micronized Humic Product Across Soil Types and Annual Weather Patterns in Central Iowa, United States

Autor: Daniel C. Olk, Dana L. Dinnes, J. Rene Scoresby, Jerald W. Darlington, Charles R. Hurburgh, Glenn R. Rippke

Publikováno v: Frontiers in Plant Science, Vol 12 (2021)

Despite growing interest in humic products as crop amendments, very few field evaluations have considered environmental factors of humic product efficacy. We determined the spatial and temporal variability in the efficacy of a micronized humic produc

Externí odkaz: https://doaj.org/article/a0beb84e6afd4b41be0e7b6b52d94344

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Akademický článek

Developments in Agricultural Soil Quality and Health: Reflections by the Research Committee on Soil Organic Matter Management

Autor: Michelle M. Wander, Larry J. Cihacek, Mark Coyne, Rhae A. Drijber, Julie M. Grossman, Jessica L. M. Gutknecht, William R. Horwath, Sindhu Jagadamma, Daniel C. Olk, Matt Ruark, Sieglinde S. Snapp, Lisa K. Tiemann, Ray Weil, Ronald F. Turco

Publikováno v: Frontiers in Environmental Science, Vol 7 (2019)

The North Central Education and Research Activity Committee (NCERA-59) was formed in 1952 to address how soil organic matter formation and management practices affect soil structure and productivity. It is in this capacity that we comment on the scie

Externí odkaz: https://doaj.org/article/52570065fc414819a22d8ed3ef7e086b

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Akademický článek

Nitrogen Fertilizer Suppresses Mineralization of Soil Organic Matter in Maize Agroecosystems

Autor: Navreet K. Mahal, William R. Osterholz, Fernando E. Miguez, Hanna J. Poffenbarger, John E. Sawyer, Daniel C. Olk, Sotirios V. Archontoulis, Michael J. Castellano

Publikováno v: Frontiers in Ecology and Evolution, Vol 7 (2019)

The possibility that N fertilizer increases soil organic matter (SOM) mineralization and, as a result, reduces SOM stocks has led to a great debate about the long-term sustainability of maize-based agroecosystems as well as the best method to estimat

Externí odkaz: https://doaj.org/article/9300fc577c35437bb603356f9a9a2c09

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Formation of Char-Like, Fused-Ring Aromatic Structures from a Nonpyrogenic Pathway during Decomposition of Wheat Straw

Autor: Klaus Schmidt-Rohr, Daniel C. Olk, Wenying Chu, Xi Chen, Xinxin Ye, Ligan Zhang, Jingdong Mao, Xiaoyan Cao, Michael L. Thompson, Hongjian Gao

Publikováno v: Journal of Agricultural and Food Chemistry. 68:2607-2614

Fused-ring aromatics, important skeletal components of black carbon (BC), contribute to long-term carbon (C) sequestration in nature. They have previously been thought to be primarily formed by incomplete combustion of organic materials, whereas the

Externí odkaz: https://explore.openaire.eu/search/publication?articleId=doi_dedup___::6fc9ce8b22e7f4431047a252fd0d7c68
https://doi.org/10.1021/acs.jafc.9b06037

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Changes in Labile Fractions of Soil Organic Matter During the Conversion to Organic Farming

Autor: Domenico Ventrella, Hamada Abdelrahman, Francesco Montemurro, Claudio Cocozza, Teodoro Miano, Daniel C. Olk

Publikováno v: Journal of Soil Science and Plant Nutrition. 20:1019-1028

Organic farming can overcome the environmental consequences of intensive conventional farming. The objective of the work was to investigate the changes in labile soil organic matter (SOM) fractions during the conversion from conventional to organic f

Externí odkaz: https://explore.openaire.eu/search/publication?articleId=doi_________::56e4873d869dfb9f83e300f961b53230
https://doi.org/10.1007/s42729-020-00189-y

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