Journal
AGRONOMY JOURNAL
Volume 110, Issue 6, Pages 2417-2429Publisher
AMER SOC AGRONOMY
DOI: 10.2134/agronj2018.02.0075
Keywords
-
Categories
Funding
- CNPq [140508/2015-5, 140275/2016-9, 141144/2017-3]
- CAPES [88881.132762/2016-01]
- Embrapa [02.11.08.001.00.00]
Ask authors/readers for more resources
Nitrogen supply, environment, and cultivar determine yield and dough properties of hard red spring wheat (Triticum aestivum L.); however, the effects of broadcasting N fertilizer at heading, a growing practice in regions such as southern Brazil, have not been explored. The objectives of this study were to: (i) compare the current producer practice vs. alternative fertilizer N management strategies and (ii) quantify their interaction with cultivar and their effects on yield and its components and relevant dough properties. Field experiments were conducted using a complete factorial arrangement in a split-plot design of three cultivars (main plots) and five N strategies (subplots) across three environments in southern Brazil. Overall, the current producer practice (all 70 kg N ha(-1) applied at tillering) was appropriate to the targeted yield (3.5 Mg ha(-1)); splitting this fertilizer N rate into tillering and heading applications (either 35 kg N ha(-1) on tillering + 35 kg N ha(-1) on heading or 45 kg N ha(-1) on tillering + 25 kg N ha(-1) on heading) benefited protein concentration but reduced yield. Best N management resulted in the addition of one late-season N application (70 kg N ha(-1) on tillering + 23 kg N ha(-1) on heading) positively impacting yield, protein concentration, dough extensibility, and alveogram index. In-season N management is more relevant for grain quality than yield, more importantly if deductions from low protein are projected, or if premiums from increasing protein concentration exist, justifying a late-season fertilizer N application.
Authors
I am an author on this paper
Click your name to claim this paper and add it to your profile.
Reviews
Recommended
No Data Available