Influence Of Furrow Tillage and Nitrogen Fertilizer Management on Water Quality and Soil Nitrogen Dynamics in Arkansas Irrigated Cotton

Author

Hunter Wood-Pointfield, Arkansas State UniversityFollow

Date of Award

3-17-2020

Document Type

Thesis

Degree Name

Agriculture, MSA

First Advisor

Arlene Adviento-Borbe

Second Advisor

Tina Teague

Committee Members

Michelle Reba

Call Number

LD 251 .A566t 2019 W66

Abstract

Furrow irrigation can increase potential for soil erosion and nutrient losses in agricultural cropping systems. A field experiment to examine furrow tillage and N fertilizer application was conducted in irrigated cotton in northeastern Arkansas. Treatments included a conventional sweep plow or conservation plow to clear water furrows and either a subsurface band of 32% urea ammonium nitrate (UAN) or broadcast urea. Runoff water was collected throughout the experiment at the edge of field, and analyzed for water quality. Soil samples of four depths (0-90 cm) were taken during key crop development stages and analyzed for soil exchangeable N. Soluble nutrients in runoff water ranged from 0.23 to 5.54 mg NO3-N L-1, 0 to 0.12 mg NH4-N L-1, 0.01 to 0.36 mg NO2-N L-1 and 0.07 to 0.93 mg P L-1. Soil exchangeable NO3-N levels were generally unaffected by treatments and N fertilization.

Rights Management

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

Recommended Citation

Wood-Pointfield, Hunter, "Influence Of Furrow Tillage and Nitrogen Fertilizer Management on Water Quality and Soil Nitrogen Dynamics in Arkansas Irrigated Cotton" (2020). Student Theses and Dissertations. 429.
https://arch.astate.edu/all-etd/429