Corn grain yield and 15N-fertilizer recovery as a function of urea sidedress timing

Schoninger, Evandro Luiz; Villalba, Hugo A. González; Bendassolli, José Albertino; Trivelin, P. C. O.

doi:10.1590/0001-3765201820170432

Cited by 12 publications

(6 citation statements)

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“…The aluminum saturation higher than 20% is typically found in no-tillage systems, and it is normally recommended to apply gypsum to reduce the aluminum saturation, in-depth [47]. The nonresponse to N fertilization using blends of CRU and U and just U was also observed in maize in Rhodic Haplustox sites [16,48], which also has a clayey texture, and in another crop in a Typic Hapludox site [49] in Brazilian conditions.…”

Section: Discussionmentioning

confidence: 91%

15N-Fertilizer Recovery in Maize as an Additional Strategy for Understanding Nitrogen Fertilization Management with Blends of Controlled-Release and Conventional Urea

Garcia

Sermarini²,

Filho

et al. 2020

Agronomy

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A single application of polymer-sulfur coated urea (PSCU) and conventional urea (U) is expected to ensure nitrogen (N) throughout the maize (Zea mays L.) growth cycle being U the likely main N-fertilizer supplier at the beginning and PSCU during the maize growth cycle. This research aimed to evaluate N fertilization management (split, incorporated, and broadcast application) and fertilizer blends (30%PSCU + 70%U and 70%PSCU + 30%U) on volatilization of ammonia (AV) and soil N mineral content (NM); plant N uptake (NU) and 15N-fertilizer recovery (NR); and yield (GY). Field experiments were conducted for two growing seasons (2017–2018 and 2019–2020) in Rhodic Eutrustox soil. U was treated with NBPT (N-(n-butyl) thiophosphoric triamide). N rate was 180 kg ha−1. AV reached 12% of the applied N (broadcast-applied 70%PSCU + 30%U, 2017–2018). The 30%PSCU + 70%U application resulted in higher NM at 40–60 cm depth in vegetative and reproductive stages in both seasons. The 70%PSCU + 30%U application resulted in the highest GY in 2017–2018, and the N treatments did not affect GY in 2019–2020. NR was 3% on average at vegetative leaf stage 4 (V4), and PSCU, the main N-fertilizer supplier applying 70%PSCU + 30%U. After V4, the main N-fertilizer supplier is PSCU for 70%PSCU + 30%U and U for 30%PSCU + 70%U application. These blends (incorporated, broadcast, and split application) can ensure N during the maize growth cycle, with NR of 72.5% at maturity (R6) being 47.9% in the grain.

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Section: Discussionmentioning

confidence: 91%

15N-Fertilizer Recovery in Maize as an Additional Strategy for Understanding Nitrogen Fertilization Management with Blends of Controlled-Release and Conventional Urea

Garcia

Sermarini²,

Filho

et al. 2020

Agronomy

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“…and wheat ( Triticum sp. ), which have a mean of RNF 40% (Faber, Jarosz, & Jadczyszyn, 2016; Lü et al., 2012; Schoninger, Villalba, Bendassolli, & Trivelin, 2018; Srivastava, Panda, Chakraborty, & Halder, 2018).…”

Section: Introductionmentioning

confidence: 99%

Multisite response of sugarcane to nitrogen rates and split application under Brazilian field conditions

et al. 2020

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Brazil is the world's largest sugarcane (Saccharum spp.) producer, with 8.5 million ha and 643 million t of stalks produced annually. Sugarcane production has a significant impact in the Brazilian economy due to the large production of sugar, ethanol, and energy. The low N use efficiency is a challenge for sugarcane production and may be due to a lack of synchrony between fertilizer application and maximum N demand. This study tested the hypothesis that split N application can improve sugarcane yield by matching fertilizer application and crop demand. We conducted 25 green sugarcane field trials in south‐central Brazil (15 in the first ratoon stage [Year 1] and 10 in the second ratoon stage [Year 2]) divided into three harvest periods: autumn, winter, and spring. We adopted a factorial design at the autumn and winter sites, evaluating N rates and methods of application (total or split), and a complete block design in spring, evaluating N rates. Measurements included stalk yield, total recoverable sugars, and sugar yield. Nitrogen responsiveness was higher in sugarcane harvested in autumn compared with winter or spring. Split N application (i.e., applying half of the N soon after harvest and half at the beginning of the rainy season) showed the potential to increase yields by 3–7 Mg ha−1 in autumn but not in winter. Among the seven responsive sites, the yield gain was 9–10.5 Mg ha−1, and the average yield at 0.8 kg N Mg−1 was statistically similar to those at 1.0, 1.2, and 1.4 kg N Mg−1.

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“…In Serbia, farmers use conventional N fertilizers, mainly urea, often in higher amounts to prevent N soil depletion. Nutrient deficiencies can cause severe stress in maize plants, and the N supply has to be synchronized with crop needs during certain developmental stages (Schoninger, González Villalba, Bendassolli, & Trivelin, 2018). This can be managed by split N fertilizer applications and/or by the use of urease or nitrification inhibitors or other forms of N fertilizers (Dinnes et al., 2002; Fageria & Baligar, 2005).…”

Section: Introductionmentioning

confidence: 99%

Integrated effects of nitrogen form, row spacing, and herbicide treatment on maize

et al. 2020

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To control weeds and cultivate maize (Zea mays L.) with higher yields, production systems have to include more efficient forms of N and appropriate herbicide treatments. The timing of N release could give maize an advantage over weeds in competition for resources, whereas cultivation at lower row spacing often decreases weed biomass. Knowledge about the different factors affecting herbicide efficiency increases the accuracy and reliability of chemical control. This study tested the weed infestation level and the development and productivity of a recently developed maize hybrid grown with the application of several integrated practices. The maize hybrid was sown with application of standard and slow-releasing urea, with row spacing of 50 and 70 cm and treatment with either a pre-emergence or a post-emergence mix of herbicides. The numbers of plants of each weed species and their biomass were lower after the application of herbicides, although N form and row spacing produced no significant differences in the average weed infestation level for 3 yr. The postemergence herbicide treatment was more effective than the pre-emergence treatment for weed biomass reduction and enhancing maize yield parameters. The N form did not influence any measured yield parameter, whereas the 70-cm row spacing resulted in significantly higher harvest index and grain yield (0.45 and 9.19 Mg ha −1 , respectively) than the 50-cm spacing (0.43 and 7.36 Mg ha −1 , respectively). The wider row spacing resulted in higher grain yield through its interaction with N form and herbicide treatment. How to cite this article: Simić M, Dragičević V, Babić M, Brankov M, Filipović M. Integrated effects of nitrogen form, row spacing, and herbicide treatment on maize. Agronomy Journal. 2020;112:748-757.

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Corn grain yield and 15N-fertilizer recovery as a function of urea sidedress timing

Cited by 12 publications

References 46 publications

15N-Fertilizer Recovery in Maize as an Additional Strategy for Understanding Nitrogen Fertilization Management with Blends of Controlled-Release and Conventional Urea

15N-Fertilizer Recovery in Maize as an Additional Strategy for Understanding Nitrogen Fertilization Management with Blends of Controlled-Release and Conventional Urea

Multisite response of sugarcane to nitrogen rates and split application under Brazilian field conditions

Integrated effects of nitrogen form, row spacing, and herbicide treatment on maize

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