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ORCID

https://orcid.org/0000-0001-7937-6649

Access Type

Open Access Thesis

Document Type

thesis

Degree Program

Plant & Soil Sciences

Degree Type

Master of Science (M.S.)

Year Degree Awarded

2022

Month Degree Awarded

May

Abstract

Cover crops are instrumental in nutrient management and soil health. A field experiment was conducted from fall 2020 to summer 2021 to evaluate the efficiency of different cover crop termination techniques and supplemental nitrogen on sweet corn yield, ear quality and nitrogen use efficiency. The four termination types are herbicide and disk tillage (HDT), herbicide no-till (HNT), cultivation disk till (CDT), and roller crimped no-till (RCNT). These termination types were each divided into four different nitrogen treatment: 0%, 33%, 67% and 100% of the recommended doses (145 kg haˉ¹). Sweet corn yield was highest and % unfilled tip was lowest when cover crops terminated by CDT, followed by RCNT, HNT and HDT. The highest ear weight obtained when 100% of the recommended nitrogen rate was applied to the sweet corn. However, the highest nitrogen use efficiency was obtained when 67% of the recommended nitrogen application rate was used.

DOI

https://doi.org/10.7275/28635036

First Advisor

Masoud Hashemi

Second Advisor

Wesley Autio

Third Advisor

Stephen Herbert

Creative Commons License

Creative Commons Attribution 4.0 License
This work is licensed under a Creative Commons Attribution 4.0 License.

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