Skip to Main Content
 

Global Search Box

 
 
 
 

Files

File List


Completed Thesis Ankrom.pdf (1.19 MB)

ETD Abstract Container

Abstract Header

Identification of a new nematode species in Ohio and soil factor effects on plant nutrition of soybean

Ankrom, Katharine Elizabeth
http://rave.ohiolink.edu/etdc/view?acc_num=osu1468842700

Abstract Details

2016, Master of Science, Ohio State University, Horticulture and Crop Science.
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 R2 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 tissue-testing as well as a secure knowledge of the soil factors that influence the uptake of nutrients from the soil into the soybean plant.
Laura Lindsey (Advisor)
Terry Niblack (Committee Member)
Kent Harrison (Committee Member)
66 p.
Horticulture; Plant Pathology
Nematode

Recommended Citations

Citations

  • Ankrom, K. E. (2016). Identification of a new nematode species in Ohio and soil factor effects on plant nutrition of soybean [Master's thesis, Ohio State University]. OhioLINK Electronic Theses and Dissertations Center. http://rave.ohiolink.edu/etdc/view?acc_num=osu1468842700

    APA Style (7th edition)

  • Ankrom, Katharine. Identification of a new nematode species in Ohio and soil factor effects on plant nutrition of soybean. 2016. Ohio State University, Master's thesis. OhioLINK Electronic Theses and Dissertations Center, http://rave.ohiolink.edu/etdc/view?acc_num=osu1468842700.

    MLA Style (8th edition)

  • Ankrom, Katharine. "Identification of a new nematode species in Ohio and soil factor effects on plant nutrition of soybean." Master's thesis, Ohio State University, 2016. http://rave.ohiolink.edu/etdc/view?acc_num=osu1468842700

    Chicago Manual of Style (17th edition)

osu1468842700
700
© 2016, all rights reserved.
This open access ETD is published by The Ohio State University and OhioLINK.