Next Article in Journal
Imaging and Spectroscopy of Natural Fluorophores in Pine Needles
Next Article in Special Issue
Effects of Medium-Term Amendment with Diversely Processed Sewage Sludge on Soil Humification—Mineralization Processes and on Cu, Pb, Ni, and Zn Bioavailability
Previous Article in Journal
Cistus incanus from Strandja Mountain as a Source of Bioactive Antioxidants
Previous Article in Special Issue
Nitrogen Nutrition of Fruit Trees to Reconcile Productivity and Environmental Concerns
Article Menu
Issue 1 (March) cover image

Export Article

Open AccessFeature PaperArticle

Nitrogen Fertilizer Management in Dryland Wheat Cropping Systems

1
Department of Plant Sciences, Southwest Research and Extension Center, University of Idaho, Parma, ID 83660, USA
2
Private Enterprise of Raths Ranch, Roundup, MT 59072, USA
*
Author to whom correspondence should be addressed.
Received: 11 December 2017 / Revised: 29 December 2017 / Accepted: 25 January 2018 / Published: 29 January 2018
(This article belongs to the Special Issue Soil Fertility and Nutrient Cycling)
Full-Text   |   PDF [1720 KB, uploaded 29 January 2018]   |  

Abstract

Wheat is the most widely cultivated food crop in the world, which provides nutrition to most of the world population and is well adapted to a wide range of environmental conditions. Timely and efficient rates of nitrogen (N) application are vital for increasing wheat grain yield and protein content, and maintaining environmental sustainability. The goal of this study was to investigate the effect of using different rates and split application of N on the performance of spring wheat in dryland cropping systems. The experiment was conducted in three different locations in Montana and Idaho during two consecutive growing seasons. A split-plot experimental design was used with three at planting N fertilization application (0, 90 and 135 kg N ha−1) and two topdressing N fertilization strategies as treatments. A number of variables such as grain yield (GY), protein content (GP) in the grains and N uptake (NUP) were assessed. There was a significant effect of climate, N rate, and time application on the wheat performance. The results showed that at-planting N fertilizer application of 90 kg N ha−1 has significantly increased GY, GP and NUP. On the other hand, for these site-years, increasing at-planting N fertilizer rate to 135 kg N ha−1 did not further enhance wheat GY, GP and NUP values. For all six site-years, topdress N fertilizer applied at flowering did not improve wheat GY, GP and NUP compared to at-planting fertilizer alone. As the risk of yield loss is minimal with split N application, from these results we concluded the best treatment for study is treatments that had received 90 kg N ha−1 split as 45 kg N ha−1 at planting and 45 kg N ha−1 at flowering. View Full-Text
Keywords: wheat; nitrogen; grain yield; protein content; nitrogen uptake wheat; nitrogen; grain yield; protein content; nitrogen uptake
Figures

Figure 1

This is an open access article distributed under the Creative Commons Attribution License which permits unrestricted use, distribution, and reproduction in any medium, provided the original work is properly cited (CC BY 4.0).
SciFeed

Share & Cite This Article

MDPI and ACS Style

Walsh, O.S.; Shafian, S.; Christiaens, R.J. Nitrogen Fertilizer Management in Dryland Wheat Cropping Systems. Plants 2018, 7, 9.

Show more citation formats Show less citations formats

Note that from the first issue of 2016, MDPI journals use article numbers instead of page numbers. See further details here.

Related Articles

Article Metrics

Article Access Statistics

1

Comments

[Return to top]
Plants EISSN 2223-7747 Published by MDPI AG, Basel, Switzerland RSS E-Mail Table of Contents Alert
Back to Top