Contribution of the early-established plant hierarchies to maize crop responses to N fertilization

Rossini, M.A.; Otegui, Marı́a Elena; Martínez, E.; Maddonni, Gustavo Ángel

doi:10.1016/j.fcr.2017.11.015

Cited by 10 publications

(4 citation statements)

References 36 publications

(66 reference statements)

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“…It is believed that N application could increase wheat and summer maize grain yield, but we found that yield was not increased linearly [2,11]. Numerous studies observed that improving N uptake ability is the first step to increase N use efficiency, which refers to the N management level and the plants' nitrogen absorption converted to grain yield [87][88][89]. The present results indicated that the TN under N 360 treatments always significantly increased by 5.4-19.1% and 16.6-32.3% for spring wheat and summer maize, respectively, and by 11.5-26.2% under N 720 treatments for annual cereal yield compared to other treatments; moreover, the N 360 and N 720 significantly increased TN by 30.7-270.1%, 11.6-262.8% and 27.7-266.1% for spring wheat, summer maize and annual cereal yield compared to the N 0 treatment, respectively, over the two years (Table 3), which is in agreement with previous studies.…”

Section: Discussionmentioning

confidence: 66%

Spring Wheat–Summer Maize Annual Crop System Grain Yield and Nitrogen Utilization Response to Nitrogen Application Rate in the Thermal–Resource–Limited Region of the North China Plain

Liang

et al. 2023

Agronomy

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Spring wheat–summer maize (SWSM) annual crop systems were formed to satisfy the maize grain mechanized harvest thermal requirement in the thermal–resource–limited region of the North China Plain. However, the nitrogen (N) application rate effect on SWSM annual yield formation, N accumulation and utilization were barely evaluated. Two–year field experiments were conducted to evaluate the effects of the N application rate on the annual yield of SWSM, observe N accumulation and utilization, and identify the optimized N application. The experiments were conducted under 5 N levels of 0 (N0), 180 (N180), 240 (N240), 300 (N300), and 360 (N360) kg ha−1. The results showed that spring wheat, summer maize and annual cereal yield under the N240 and N480 treatments obtained the highest grain yield (GY) of 5038, 1282 and 16,320 kg ha−1, respectively, and the optimal N application rate was estimated using a linear–plateau model to be 231–307, 222–337 and 463–571 kg ha−1 with maximum GY of 4654–5317, 11,727–12,003 and 16,349–16,658 kg ha−1, respectively. With the increase in the N application rate, the dry matter accumulation (DM) were significantly increased by 16.9–173.5% for spring wheat and 11.1≈–76.8% for summer maize, respectively; and the annual cereal DM was 15.1–179.7% greater than that with N0 treatment, respectively. Spring wheat, summer maize and the annual cereal total N accumulation (TN) under N360 and N720 treatments were significantly increased by 5.4–19.1%, 16.6–32.3% and 11.5–26.2%, respectively, compared to the other treatments; however, N use efficiency for biomass and grain production (NUEbms and NUEg) were decreased significantly by 10.9–13.6% and 8.9–20.7%, 6.8–13.8% and 12.2–15.6%, and 5.5–11.7% and 10.0–16.0%, respectively. Meanwhile, the N partial factor productivity (PFPN), N agronomy use efficiency (ANUE), N recovery efficiency (NRE) and N uptake efficiency (NEupk) under the N240 treatment for spring wheat and summer maize obtained high levels of 20.99 and 47.01 kg kg−1, 9.27 and 16.35 kg kg−1, 32.53% and 32.44%, and 0.85 and 0.72 kg kg−1, respectively. Correlation analysis showed that the N application rate, TN and NEupk played significantly positive roles on GY, spring wheat spilke grain number, summer maize ear grain number and 1000–grain weight, DM LAImax and SPADmax, while NUEbms, NUEg, PFPN and ANUE always played negative effects. These results demonstrate that spring wheat, summer maize and annual cereal obtained the highest GY being 4654–5317, 11,727–12,003 and 16,349–16,658 kg ha−1 with the optimal N application rate 231–307, 222–337 and 463–571 kg ha−1, respectively, which provide N application guidance to farmer for spring wheat–summer maize crop systems to achieve annual mechanical harvesting in the thermal–resource–limited region of the North China Plain.

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Section: Discussionmentioning

confidence: 66%

Spring Wheat–Summer Maize Annual Crop System Grain Yield and Nitrogen Utilization Response to Nitrogen Application Rate in the Thermal–Resource–Limited Region of the North China Plain

Liang

et al. 2023

Agronomy

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“…6B, D) and, ii) yielded unexpected lower values in early SD with high N rates and high densities (Fig. 6A, C) probably due to a higher crowding stress that increased inter plant variability in N upt P (Rossini et al, 2018) and in %N of leaves (Pagano and Maddonni, 2007).…”

Section: Discussionmentioning

confidence: 87%

Crop nitrogen status of early- and late-sown maize at different plant densities

Maltese

Maddonni

Melchiori

et al. 2020

Field Crops Research

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“…Підвищення врожайності кукурудзи знаходиться в тісному корелятивному зв'язку з нормою азотних добрив, ефективність яких зростає за комбінованого застосування [1,17,18].…”

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“…The sum of the accumulated heat units during vegetation more objectively characterizes the thermal resources of the area compared to the sums of positive, active and effective temperatures, which makes it possible to more accurately determine the optimal dates for sowing and the end of the crop vegetation season in the conditions of the research region. Applying nitrogen in several ways optimizes the nutrition of corn plants, ensuring an increase in individual productivity and grain yield up to 18 Мета. Оцінити фотосинтетичні параметри посівів гороху озимого залежно від інокуляції насіння та азотного удобрення в умовах Правобережного Лісостепу України.…”

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confidence: 99%

Productivity of corn as affected by the accumulation of heat units and different nitrogen fertilizers

Kalenska¹,

Hovenko²

2022

Наукові праці ІБКіЦБ

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Purpose. To establish the effectiveness of the application of different fertilizers in corn cultivation technologies in the Left Bank Forest Steppe of Ukraine, depending on the weather conditions of the years of research. Methods. Field research was conducted in the years 2019–2021 in dark grey podzolized soil. The results of the study were calculated using the SAS 9.4 software package. Analysis of variance was performed using the Duncan rank criterion. Results. Calculations of the accumulation of heat units showed a significant difference by year, which largely determined the level of corn productivity. During vegetation, the sum of active temperatures in the conditions of the northern regions of the Left Bank Forest Steppe varied, on average for 2019–2021, from 3235 (May–September) to 3731 (April–November). The largest range of difference between the sums of heat units was for the period April–October, from 3550 in 2019 to 3845 in 2021, which indicates the potential for earlier corn sowing dates in this region under favorable weather conditions. Corn hybrids ‘EU Concord’ and 'EU Asteroid' are quite plastic and respond positively to optimization of nutrition. Application of N22Р57К57 in the form of diamophoska provides an increase in the yield of their grain by 0.99–1.01 t/ha, or 16.3–16.4%. Additional application of nitrogen fertilizers against the background of diammonium phosphate provides an increase in yield from 0.57 to 1.33 t/ha, or by 8.0–18.6%. With the introduction of potassium ammonium nitrate (KAN 32), the yield increase in ‘EU Concord’ was 2.19 t/ha and in ‘EU Asteroid’ 2.34 t/ha compared to the control. Conclusions. The sum of the accumulated heat units during vegetation more objectively characterizes the thermal resources of the area compared to the sums of positive, active and effective temperatures, which makes it possible to more accurately determine the optimal dates for sowing and the end of the crop vegetation season in the conditions of the research region. Applying nitrogen in several ways optimizes the nutrition of corn plants, ensuring an increase in individual productivity and grain yield up to 18.6%.

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Contribution of the early-established plant hierarchies to maize crop responses to N fertilization

Cited by 10 publications

References 36 publications

Spring Wheat–Summer Maize Annual Crop System Grain Yield and Nitrogen Utilization Response to Nitrogen Application Rate in the Thermal–Resource–Limited Region of the North China Plain

Spring Wheat–Summer Maize Annual Crop System Grain Yield and Nitrogen Utilization Response to Nitrogen Application Rate in the Thermal–Resource–Limited Region of the North China Plain

Crop nitrogen status of early- and late-sown maize at different plant densities

Productivity of corn as affected by the accumulation of heat units and different nitrogen fertilizers

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