Campus Units

Agronomy

Document Type

Abstract

Publication Version

Published Version

Publication Date

2016

Conference Title

ASA-CSSA-SSSA Annual Meeting

Conference Date

November 6–9, 2016

City

Phoenix, AZ, United States

Abstract

Use of a living mulch in a continuous corn cropping system can potentially protect the soil from erosion and increase organic C inputs into the soil thereby enhancing soil quality and facilitating greater harvest corn stover for bio-energy production. The objective of this study is to evaluate soil C- and N-dynamics under a corn-living mulch system that includes a shallow rooted perennial cover crop, strip tillage, and spring burn down. This study hypothesized that a well managed shallow rooted perennial cover crop can improve soil quality by increasing soil C storage and synergistically distributing soil nutrients. Here we report impacts of the living mulch systems on season Mehlich III extractable nutrients and the inter-season timing and distribution of water extractable C and 2M KCl extractable NO3 and NH4 for 3 site-years. Two living mulch systems were used, Kentucky bluegrass (Poa pratensis L.) and Tall fescue [Schedonorus arundinaceus (Schreb.) Dumort.], and soil samples were collected from within rows (strip till zone where corn is planted with no cover crop) and in between corn rows (under the perennial cover crop) thrice a month after N-fertilizer application. The nutrient data and their implications on corn yield will be reported to evaluate impacts of living mulches on continuous corn systems.

Comments

This is an abstract of a presentation from the ASA-CSSA-SSSA Annual Meeting, Phoenix, AZ, November 6–9, 2016. Posted with permission.

Copyright Owner

The authors

Language

en

File Format

application/pdf

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