Identification of a new nematode species in Ohio and soil factor effects on plant nutrition of soybean
Year: 2016
Type: article
Abstract: Plant nutrition is of great importance to soybean [Glycine max (L.) Merr.] growth and grain yield.Nutrient analysis is often difficult to interpret due to the compounding interactions in the soybean rhizosphere.A state-wide survey of Ohio soybean production was done with two objectives: 1) to assess the status of soil fertility and plant nutrition;and 2) to determine the impact of soil factors on the relationship of nutrient uptake to the plant from the soil.Sampling was conducted from 2013 through 2015 in Ohio resulting in 588 total samples.Soil-test and tissue concentrations of phosphorus (P) and potassium (K) were taken as well as soil-test levels of pH, cation exchange capacity (CEC), soil texture, and nematode population densities.Low correlations were observed between the soil and tissue tests with R 2 values of 0.1539 and 0.36781, for P and K respectively.We found that 32.9% of the P soil samples tested below the critical soil test range, but only 2.7% of the samples were below tissue-test critical levels for P, while 23.4% of the K soil test samples were found to be below the critical levels and only 5.9% of the K tissue tests fell below the critical level.All of the soil factors tested in a step-wise regression model were found to influence P uptake, while only soil K, CEC, and Soybean cyst nematode (SCN) were found to influence K uptake.During the nematode analysis, a new species for Ohio was identified as Paratylenchus neoamblycephalus with the aid of morphometric, morphological, and molecular examination.We recommend the aid of succeed as a graduate student but was always willing to provide guidance and advice for my future.Without her support and assistance, I would likely not have decided to continue my education and pursue my PhD.I would also like to thank my committee members Dr. Terry Niblack, and Dr. Kent Harrison for all of their assistance throughout my master's degree program.Their willingness to meet and share their wisdom was immeasurable to my project.Also, thank you to the Ohio Soybean Council for funding this research and to the Dr. Terry Niblack and Dr. Libby Dayton lab groups for sample analysis.I am also very thankful for all those who assisted with sampling and data collection for my
Author: Katharine E. Ankrom
Institution: The Ohio State University
Language: English
Subfield: Plant Science
Domain: Life Sciences
SDG: Zero hunger
Open Access status: green
OpenAlex ID: W2599619617