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
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Claims 7
Claim · model-written summary
Soil and tissue P tests were weakly correlated.
- Taxon
- soybean
Glycine maxt0 - Outcome
- correlationse0
- Value
- 0.1539e0
- Setting
- soil and tissue testse0
Not reportedDirection
Organisms pictured · Representative pictures of the matched species, not figures from the paper.
Verbatim
e0“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.”
t0“soybean”
Claim · model-written summary
Soil and tissue K tests were weakly correlated.
- Taxon
- soybeanGlycine maxt0
- Outcome
- correlationse0
- Value
- 0.36781e0
- Setting
- soil and tissue testse0
Not reportedDirection
Organisms pictured · Representative pictures of the matched species, not figures from the paper.
Verbatim
e0“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.”
t0“soybean”
Claim · model-written summary
P deficiency thresholds were met in 32.9% of soil tests but 2.7% of tissue tests.
- Taxon
- soybeanGlycine maxt0
- Outcome
- P soil samples tested below the critical soil test rangee0
- Value
- 32.9%e0
- Qualifier
- 2.7% of the samples were below tissue-test critical levels for Pe0
Organisms pictured · Representative pictures of the matched species, not figures from the paper.
Verbatim
e0“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”
t0“soybean”
Claim · model-written summary
K deficiency thresholds were met in 23.4% of soil tests but 5.9% of tissue tests.
- Taxon
- soybeanGlycine maxt0
- Outcome
- K soil test samples were found to be below the critical levelse0
- Value
- 23.4%e0
- Qualifier
- 5.9% of the K tissue tests fell below the critical levele0
Organisms pictured · Representative pictures of the matched species, not figures from the paper.
Verbatim
e0“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.”
t0“soybean”
Claim · model-written summary
All tested soil factors influenced P uptake in the regression.
- Taxon
- soybeanGlycine maxt0
- Outcome
- P uptakee0
- Setting
- soil factorse0
Not reportedDirection
Organisms pictured · Representative pictures of the matched species, not figures from the paper.
Verbatim
e0“All of the soil factors tested in a step-wise regression model were found to influence P uptake”
t0“soybean”
Claim · model-written summary
Only soil K, CEC, and soybean cyst nematode influenced K uptake.
- Taxon
- soybeanGlycine maxt0
- Interactor
- Soybean cyst nematode
Heterodera glycinese0pest - Outcome
- K uptakee0
- Setting
- soil K, CECe0
Not reportedDirection
Organisms pictured · Representative pictures of the matched species, not figures from the paper.
Verbatim
e0“only soil K, CEC, and Soybean cyst nematode (SCN) were found to influence K uptake.”
t0“soybean”
Claim · model-written summary
Paratylenchus neoamblycephalus was newly identified in Ohio.
- Taxon
- soybeanGlycine maxt0
- Interactor
- Paratylenchus neoamblycephalusParatylenchus neoamblycephaluse0pest
- Outcome
- new species for Ohio was identified as Paratylenchus neoamblycephaluse0
- Setting
- Ohioe0
Organisms pictured · Representative pictures of the matched species, not figures from the paper.
Verbatim
e0“a new species for Ohio was identified as Paratylenchus neoamblycephalus”
t0“soybean”