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Full-Text Articles in Life Sciences
Soil Health Assessment For The Agroecosystems Of West Tennessee, Surendra Singh
Soil Health Assessment For The Agroecosystems Of West Tennessee, Surendra Singh
Doctoral Dissertations
Soil health assessment is important for making informed sustainable management decisions in production systems. An established standardized method to quantify soil health is lacking and the validity of the existing methods across agroecoregions and cropping systems is not yet proven. Therefore, this study aims to evaluate the feasibility of widely discussed three soil health tests - Haney’s Soil Health Test (HSHT), Comprehensive Assessment of Soil Health (CASH), and Alabama Soil Health Index (ASHI) to assess soil health in diverse cropping systems of Tennessee. Since these approaches were originally developed for specific agroecoregions, we hypothesized that these tests are not sensitive …
Soil Moisture Sensitivity Of Microbial Processing Of Soil Organic Carbon, Shikha Singh
Soil Moisture Sensitivity Of Microbial Processing Of Soil Organic Carbon, Shikha Singh
Doctoral Dissertations
Soil organic carbon (SOC) is the largest terrestrial C pool and understanding SOC decomposition in response to environmental factors is critical for accurate predictions of climatic change. Soil moisture is one of the most important, yet less explored, environmental factors controlling soil microbial respiration. The relationship between soil moisture and respiration also varies with soil texture. Currently, it is difficult to predict feedbacks to climatic changes from changes in soil moisture, as most earth system models lack site-specific, experimentally-derived parameters to represent soil moisture-texture-respiration relationships. The overarching goals of this dissertation are to gain a fundamental understanding of the interactive …