Next Article in Journal
Effect of Organic Inputs and Solarization for the Suppression of Rhizoctonia solani in Woody Ornamental Plant Production
Previous Article in Journal
Impact of Foliar Fertilization on the Content of Silicon and Macronutrients in Sugar Beet
Open AccessArticle

Silicon Promotes Agronomic Performance in Brassica napus Cultivated under Field Conditions with Two Nitrogen Fertilizer Inputs

Normandie Université, UniCaen, INRA, UMR 950 EVA, SFR Normandie Végétal (FED4277), 14000 Caen, France
Centre Mondial de l’Innovation, Groupe Roullier, 35000 Saint Malo, France
Author to whom correspondence should be addressed.
Plants 2019, 8(5), 137;
Received: 26 April 2019 / Revised: 12 May 2019 / Accepted: 21 May 2019 / Published: 22 May 2019
(This article belongs to the Section Plant Physiology and Metabolism)
PDF [1736 KB, uploaded 23 May 2019]


To limit the environmental pollution associated with intensive nitrogen (N) fertilizer usage, alternative cultural practices must be considered for crops requiring high N inputs such as rapeseed. In this context, the effects of silicon (Si) supply on the agronomic performance of rapeseed cultivated under field conditions with two N fertilizer levels (60 and 160 kg ha−1) were studied. Results showed that Si supplied in the form of silicic acid (12 kg ha−1) has no effect on the agronomic performance of plants cultivated with the lower N input. In contrast, in plants fertilized with 160 kg N ha−1, Si supply promotes the preservation of green leaves (until the flowering stage) and at harvest stage, increases biomass, yield, and seed micronutrient concentrations (especially cobalt and iron). The agronomic indexes show that the increase in seed yield is related to a better uptake of N from the soil by Si-treated plants, but is not an improvement in N mobilization towards the seeds. This study showed that Si supply combined with high N inputs (160 kg ha−1) improves usage of N fertilizer and yield. The possibility that a Si supply could allow for a reduction in N input without altering the yield of rapeseed is discussed. View Full-Text
Keywords: agronomic indexes; micronutrients; rapeseed; silicon; yield agronomic indexes; micronutrients; rapeseed; silicon; yield

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).

Supplementary material


Share & Cite This Article

MDPI and ACS Style

Laîné, P.; Haddad, C.; Arkoun, M.; Yvin, J.-C.; Etienne, P. Silicon Promotes Agronomic Performance in Brassica napus Cultivated under Field Conditions with Two Nitrogen Fertilizer Inputs. Plants 2019, 8, 137.

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



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