Optimizing Nitrogen Fertilizer Rates at Distinct In-season Application Moments in Sugarcane

Castro, Sérgio Gustavo Quassi de; Magalhães, Paulo Sérgio Graziano; Castro, Saulo Augusto Quassi de; Kölln, Oriel Tiago; Franco, Henrique Coutinho Junqueira

doi:10.1007/s42106-021-00175-z

Cited by 5 publications

(13 citation statements)

References 51 publications

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“…Furthermore, technologies where it is possible to supply fertilizers near the plant root system are a good alternative to maximize yield gains, as described by the SI application using liquid fertilizer in our research ( Figures 3C, D ). The higher yield promoted by liquid fertilizer is possibly associated with the immediate availability of nutrients to sugarcane plants due to its liquid form, favoring their uptake by the roots in the soil solution; conversely, when using solid fertilizer, sufficient moisture is required to dissolve the granules and subsequently make nutrients available in the soil solution ( Taiz and Zeiger, 2009 ; Castro et al., 2022 ).…”

Section: Discussionmentioning

confidence: 99%

“…In addition, the high rate of solid fertilizer in this application method (105 kg K 2 O ha −1 , i.e., 87 kg K ha −1 ) causes some harmful effects on sugarcane due to the salt index of the fertilizer. Because of the lack of moisture in the soil, the nutrients from the solid fertilizer are not released ( Castro et al., 2022 ) and a long-term effect of salt concentration occurs, which may affect the crop.…”

Section: Discussionmentioning

confidence: 99%

“…The timing of fertilizer application must coincide with favorable conditions for nutrient uptake by sugarcane ( Castro et al., 2019 ; Congreves et al., 2021 ). Castro et al., (2022) found that the ideal time for N application in sugarcane ratoons can increase crop yield by up to 26 Mg ha −1 . The authors also verified that the synchronization of the best moment for N application is more important for early and mid-season harvest periods, while at the late period of the sugarcane harvest season, this definition only slightly affected the sugarcane yield.…”

Section: Discussionmentioning

confidence: 99%

“…This variable is highly influenced by the application time once weather conditions mediate the sugarcane response to fertilization. Recent studies indicate that the adjustment of the fertilizer rate according to the sugarcane harvest season (i.e., autumn, winter, or spring) promotes production gains ( Castro et al., 2022 ) and increases nutrient use efficiency by the plant ( Bowles et al., 2018 ; Congreves et al., 2021 ; Farzadfar et al., 2021 ). These increments are obtained when soil fertilization has been carried out under conditions of adequately high soil moisture, which favors nutrient availability for plant uptake ( Castro et al., 2022 ; Otto et al., 2022b ).…”

Section: Introductionmentioning

confidence: 99%

“…Recent studies indicate that the adjustment of the fertilizer rate according to the sugarcane harvest season (i.e., autumn, winter, or spring) promotes production gains ( Castro et al., 2022 ) and increases nutrient use efficiency by the plant ( Bowles et al., 2018 ; Congreves et al., 2021 ; Farzadfar et al., 2021 ). These increments are obtained when soil fertilization has been carried out under conditions of adequately high soil moisture, which favors nutrient availability for plant uptake ( Castro et al., 2022 ; Otto et al., 2022b ). However, under excessively high soil moisture and water logging conditions, nutrient losses might increase due to denitrification and leaching ( Otto et al., 2016 ; Bowles et al., 2018 ).…”

Section: Introductionmentioning

confidence: 99%

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Fertilizer source and application method influence sugarcane production and nutritional status

Castro

Coelho²,

Castro³

et al. 2023

Front. Plant Sci.

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IntroductionThe contrasting weather conditions throughout the sugarcane harvest period in south-central Brazil (April to November) influence fertilization management in sugarcane ratoon.MethodsThrough field studies carried out over two cropping seasons, we aimed to compare the performance of sugarcane at sites harvested in the early and late periods of the harvest season as a function of fertilizer sources associated with application methods. The design used in each site was a randomized block in a 2 x 3 factorial scheme; the first factor consisted of fertilizer sources (solid and liquid), and the second factor consisted of application methods (above the straw, under the straw, and incorporated into the middle of the sugarcane row).ResultsThe fertilizer source and application method interacted at the site harvested in the early period of the sugarcane harvest season. Overall, the highest sugarcane stalk and sugar yields at this site were obtained with the incorporated application applying liquid fertilizer and under straw applying solid fertilizer, with increments of up to 33%. For the site harvested in the late period of the sugarcane harvest season, the liquid fertilizer promoted a 25% higher sugarcane stalk yield compared to the solid fertilizer in the crop season with low rainfall in the spring, while in the crop season with normal rainfall, there were no differences between treatments.DiscussionThis demonstrates the importance of defining fertilization management in sugarcane as a function of harvest time, thereby promoting greater sustainability in the production system

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Section: Discussionmentioning

confidence: 99%

Section: Discussionmentioning

confidence: 99%

Section: Discussionmentioning

confidence: 99%

Section: Introductionmentioning

confidence: 99%

Section: Introductionmentioning

confidence: 99%

See 3 more Smart Citations

Fertilizer source and application method influence sugarcane production and nutritional status

Castro

Coelho²,

Castro³

et al. 2023

Front. Plant Sci.

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Fertilizer Application Method Provides an Environmental-Friendly Nitrogen Management Option for Sugarcane

Quassi de Castro,

Costa,

Quassi de Castro

et al. 2024

J Soil Sci Plant Nutr

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Purpose Nitrogen fertilizer management is an important agricultural tool that must be optimized to promote sustainable practices since the nitrogen-fertilizer recovery by plants (NRP) is low, leading to nitrogen losses to the environment. In sugarcane, N-fertilization has been investigated over the years but little attention has been given to N-fertilizer application methods. Sugarcane crop production and environmental impact regarding N-fertilizer application methods (i.e., applied onto the sugarcane straw layer and incorporated into the soil) were investigated in the present study aiming to achieve an environmental-friendly cropping system. Methods Sugarcane yield and NRP, N2O emissions, relevant components of the soil microbiological community and N-fertilizer retention in soil layers were quantified. The experiment was carried out in field conditions where N-fertilizer application methods using 15N-labelled ammonium nitrate (15NH415NO3) were compared to a control treatment with no N-fertilization. Results Incorporation of N-fertilizer into the soil increased the sugarcane yield by 17% (two-year average) compared to N-fertilizer applied onto the sugarcane straw layer, which was similar to control treatment. There was an increase in NRP-fertilizer of 79% due to the application of N-fertilizer incorporated into the soil. Furthermore, soil incorporation of N-fertilizer decreased N2O emission by 22% with the fertilizer N emission factor reduced four-fold. The N2O emissions were mostly associated with ammonium-oxidizing bacteria (AOB). Conclusions Our results show that application of N-fertilizer incorporated into the soil is an environmental-friendly N-fertilization management which will improve agricultural sustainability and reduce environmental impacts. Graphical Abstract

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Foliar nitrogen and phosphorus fertilization

de Castro,

Schjoerring

2024

Advances in Agronomy

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Optimizing Nitrogen Fertilizer Rates at Distinct In-season Application Moments in Sugarcane

Cited by 5 publications

References 51 publications

Fertilizer source and application method influence sugarcane production and nutritional status

Fertilizer source and application method influence sugarcane production and nutritional status

Fertilizer Application Method Provides an Environmental-Friendly Nitrogen Management Option for Sugarcane

Foliar nitrogen and phosphorus fertilization

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