Nitrogen use efficiency and grain yield of corn hybrids as affected by nitrogen rates and sowing dates in subtropical environment

Coelho, Antônio Eduardo; Sangoi, Luís; Balbinot, Alvadi Antônio; Kuneski, Hugo François; Martins, Marcos Cardoso

doi:10.36783/18069657rbcs20210087

Cited by 10 publications

(11 citation statements)

References 45 publications

(72 reference statements)

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“…Furthermore, the appropriate timing of N application might maximize maize production, although yield variation is closely related to N rate and external environment. In this line, the highest maize yield was obtained with a N rate of 360 kg/ha in early spring planting and 300 kg/ha in late spring sowing (Coelho et al, 2022). Also, similar results were reported by Yue et al (2022) they noticed that more FIGURE 4 | PCA analysis shows the correlations between agronomic traits and NUE traits according to the N fertilization levels and application time over 2 years.…”

Section: Discussionsupporting

confidence: 82%

“…N fertilization significantly increased grain yield by enhancing the grain weight, number of ears/ha, and number of grains per ear (Srivastava et al, 2018). The effect of raising the N rate on maize production was stronger in early spring sowing than in late spring sowing, owing to the improved effect of N-fertilizer on kernels per ear (Coelho et al, 2022). The suitable N fertilizer rate and time enhances grain weight as a result of increasing effective grain-filling duration and rate (Abdelsalam et al, 2019;Wei et al, 2019;Hammad et al, 2022;Zhanbota et al, 2022).…”

Section: Discussionmentioning

confidence: 99%

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Maize (Zea mays L.) Productivity and Nitrogen Use Efficiency in Response to Nitrogen Application Levels and Time

et al. 2022

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Productivity of maize (Zea mays L.) and nitrogen use efficiency (NUE) as affected by nitrogen application levels and timing were studied. The experimental design was a three-replication randomized complete block design (RCBD). The first factor was nitrogen levels (122, 240, 288 and 336 kg N/ha) and the second factor was nitrogen timing (50% of N at sowing and 50% of N before the first irrigation; T1, 50% of N at sowing and 50% of N before the second irrigation; T2 and 50% of N before the first irrigation and 50% of N before the second irrigation; T3). Results indicated that plant height, ear length, kernel weight, number of grains/rows, number of grains/ear and grain yields all increased significantly as nitrogen levels increased and the level of 336 kg N/ha significantly exhibiting the highest values in both seasons. In terms of nitrogen application time, maize yield parameters such as plant height, ear length, kernel weight/ear, number of grains/rows, number of grains/ear and grain yield were significantly affected by nitrogen timing, with the highest values obtained at T3 while the lowest values obtained at T1 in both seasons. The interaction had a significant impact on plant height and grain yield/ha, with the tallest plants, the highest yields and its components observed at 336 kg N/ha, with 50% of N applied during the first irrigation and 50% of N applied during the second. Furthermore, under the study conditions, NUE decreased dramatically as nitrogen levels increased and increased significantly as nitrogen application time changed.

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Section: Discussionsupporting

confidence: 82%

Section: Discussionmentioning

confidence: 99%

Maize (Zea mays L.) Productivity and Nitrogen Use Efficiency in Response to Nitrogen Application Levels and Time

et al. 2022

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“…Hence, climatic factors associated with sowing time influenced maize grain weight variations from silking stage to maturity. On the contrary, Coelho et al [47] have determined a high positive correlation between NGE with GY regardless of sowing time or maize hybridity.…”

Section: Discussionmentioning

confidence: 89%

Influence of Sowing Time on Fusarium and Fumonisin Contamination of Maize Grains and Yield Component Traits

et al. 2022

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The main aim of this research was to study the effect of two sowing times (early and late) on Fusarium and fumonisin contamination and some yield component traits of two maize hybrids from the FAO maturity groups 500 (ZP 560) and 600 (ZP 666) within a two-year growing season (2016–2017). F. verticillioides and F. subglutinans have been identified as Fusarium ear rot (FER) pathogens and potential producers of B-type fumonisins (FBs), with F. verticillioides as the predominant Fusarium species in both years. The incidence of F. verticillioides and FB levels were affected by sowing time and maize hybridity. With early sowing and the mid-maturity hybrid ZP 560, F. verticillioides and FB contamination were lower than with late sowing and the late-maturity hybrid ZP 666. Yield parameters also differed significantly between sowing time and maize hybrid treatments. Early sowing increased ear length (EL), number of grains per ear (NGE), grain weight per ear (GWE), and grain yield per hectare (GY). The late-maturity hybrid ZP 666 had higher yield component traits and GY than the mid-maturity hybrid ZP 560. EL, GWE, thousand-grain weight (TGW), and GY were affected by year. Interactions between sowing times and maize hybrids were highly significant (p ≤ 0.01) for FB level, GWE, and GY. The obtained results indicate the importance of applying early sowing to achieve high maize grain yields with lower contamination by F. verticillioides and FBs. Although mid-maturity hybrid ZP 560 and late-maturity hybrid ZP 666 showed significant differences in terms of levels of F. verticillioides and FB contamination, both were susceptible to F. verticillioides, with high FB levels. These results should be useful to breeders of maize hybrids to create genotypes more resistant to these fungal contaminants.

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“…According to Adhikari et al [28], a rate of 300 kg N/ha resulted in more grains at 30, 45, 60, and 75 days after planting than the control, showing that reducing nitrogen (N) losses from the soil and making optimum use of nitrogen (N) during crucial growth and development stages of maize would be more cost-efective. Te impact of increasing the nitrogen (N) rate on maize production was stronger in early spring sowing than in late spring sowing because of the improved efect of nitrogen (N) fertilizer on the number of kernels per ear [29].…”

Section: Treatment Efects On Maize Grainmentioning

confidence: 99%

Yield Response of Hybrid and Open Pollinated Maize (Zea mays L.) Varieties to Different Levels of Fertilizer Nitrogen under Rain-Fed Conditions in the Bono Region of Ghana

Ansu

Santo

Khalid

et al. 2023

International Journal of Agronomy

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Background. The experiment was undertaken at Nsapor, a suburb of Berekum municipality in the Bono Region of Ghana, from March 2019 to November 2019 to determine the suitable rate of fertilizer nitrogen application to optimize seed yield and yield attributes of Pannar 12 and Omankwa maize varieties in a semi deciduous agroecology of Ghana. Soil fertility is low in Ghana because of factors such as rampant annual bushfires, short fallow periods as a result of high human populations, continuous cropping, deforestation, and improper mining activities. There is also little information on crop variety and site-specific fertilizer recommendations in Ghana, resulting in inappropriate use of fertilizers by most Ghanaian farmers, culminating in low crop yields. Methods. Hybrid (Pannar 12) and open pollinated (Omankwa) maize varieties were treated with four rates of fertilizer nitrogen obtained from NPK 15-15-15 (0 kgN/ha, 90 kgN/ha, 120 kgN/ha and 150 kgN/ha) and laid out in a factorial combination in a randomized complete block design with three replicates. Results. Application of 150 kg/ha of fertilizer N to Pannar 12 variety resulted in grain yields of 6146 kg/ha and 6095 kg/ha in the major and minor rainy seasons, respectively. The results also showed that application of 120 kg/ha of fertilizer N to Omankwa variety gave grain yields of 4635 kg/ha and 5286 kg/ha in the major and minor rainy seasons, respectively. To optimize the grain yield of maize, farmers could use NPK 15-15-15 fertilizer as a source of nitrogen and apply 120 kgN/ha to Omankwa variety and 150 kgN/ha to Pannar 12 variety in both major and minor rainy seasons.

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Nitrogen use efficiency and grain yield of corn hybrids as affected by nitrogen rates and sowing dates in subtropical environment

Abstract: Nitrogen use efficiency and grain yield of corn hybrids as affected by nitrogen rates and sowing dates in subtropical environment. Rev Bras Cienc Solo. 2022;46:e0210087.

Cited by 10 publications

References 45 publications

Maize (Zea mays L.) Productivity and Nitrogen Use Efficiency in Response to Nitrogen Application Levels and Time

Maize (Zea mays L.) Productivity and Nitrogen Use Efficiency in Response to Nitrogen Application Levels and Time

Influence of Sowing Time on Fusarium and Fumonisin Contamination of Maize Grains and Yield Component Traits

Yield Response of Hybrid and Open Pollinated Maize (Zea mays L.) Varieties to Different Levels of Fertilizer Nitrogen under Rain-Fed Conditions in the Bono Region of Ghana

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