Campus Units

Agronomy

Document Type

Article

Publication Version

Accepted Manuscript

Publication Date

12-14-2018

Journal or Book Title

Agronomy Journal

DOI

10.2134/agronj2018.07.0443

Abstract

Kenaf (Hibiscus cannabinus L.) is a promising biorenewable resource for producing natural fibers but few studies have investigated the crop when grown in cooler climates, such as the American Midwest. The objectives of this study were to: 1) determine the agricultural practices (row spacing, seed, and N rates) leading to optimal kenaf dry matter (DM) stem and fiber yield in ‘Tainung 2’ and ‘Whitten’; 2) evaluate stem height, basal diameter, and leaf area index (LAI) over the growing season; and 3) assess the influence of management practices on fiber (bast and core lignocellulose) composition, and carbon (C), N, and total ash concentration. Kenaf cultivars Tainung 2 and Whitten were planted in Boone County, IA in 2014 and 2015 at 247,000 or 371,000 seed ha‐1, in 38‐cm or 76‐cm rows that received 0, 56, 112, 168, or 224 kg N ha‐1. Stand density, core:bast fiber ratio, and basal stem diameter were influenced by three‐way interactions. Stem height at harvest was influenced by the main effects of row spacing, seeding rate, and N fertilization rate. Nitrogen fertilization did not influence stem DM yield, regardless of application rate. Kenaf is a promising multi‐purpose crop that could contribute to the natural fiber marker, as well as diversifying the landscape. Kenaf is well adapted to Iowa and can be produced with a range of management practices.

Comments

This is a manuscript of an article published as Bourguignon, M., K.J. Moore, A.W. Lenssen, and B.S. Baldwin. 2019. Agricultural practices for growing kenaf (Hibiscus cannabinus L.) in Iowa: I. Morphology, stem diameter, and fiber yield. Agronomy Journal. doi: 10.2134/agronj2018.07.0443. Posted with permission.

Copyright Owner

American Society of Agronomy

Language

en

File Format

application/pdf

Available for download on Saturday, December 14, 2019

Published Version

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