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

Maltese, Nicolás; Maddonni, Gustavo Ángel; Melchiori, Roberto; Ferreyra, J.M.; Caviglia, Octavio Pedro

doi:10.1016/j.fcr.2020.107965

Cited by 13 publications

(3 citation statements)

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“…Nitrogen (N) is an essential macronutrient required for plant growth and development (Muhammad et al 2018;Cai et al 2020). In agricultural production, appropriate N application is conducive to the vegetative growth of crops, particularly for growth of roots, stem, leaves and final yield (Zhou et al 2019;Maltese et al 2020). Previous studies have shown reduced N application reduces the harvest index during production, while higher amounts of N fertilizer can increase maize vegetative growth, but reproductive growth is reduced (Silva & Souza, 2020).…”

Section: Introductionmentioning

confidence: 99%

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Stover return and nitrogen application affect soil organic carbon and nitrogen in a double‐season maize field

et al. 2021

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Cultivation techniques have an important influence on grain yield of maize. This experiment investigated the effect of stover return (SR) and different nitrogen (N) application rate on soil organic carbon (SOC) composition, soil nutrient and maize yield.• Different nitrogen application rate 100 (N100), 150 (N150), 200 (N200), 250 (N250) or 300 (N300) kg ha À1 applied to the maize field with stover return and without stover return traditional planting (TP) method.• Nitrogen application rate and stover return affected the SOC, labile organic carbon (LOC), microbial biomass (MBC), NO 3 À -N, NH 4 + -N and maize yield. Soil N, soil carbon content and maize yield of SR were all higher than TP. The SOC content of SR and TP were 9.67 and 9.19 g kg À1 , respectively. Nitrogen application was significantly and positively correlated with soil MBC, LOC, SOC, NO 3 À -N, NH 4 + -N and yield. The maximum values of SOC composition, soil nutrients and maize yield were reached at SR with 250 kg ha À1 .• Stover return with application of N 250 kg ha À1 significantly increased the growth attribute and maize yield in subtropical region compared with traditional planting.

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Section: Introductionmentioning

confidence: 99%

“…2019; Maltese et al . 2020). Previous studies have shown reduced N application reduces the harvest index during production, while higher amounts of N fertilizer can increase maize vegetative growth, but reproductive growth is reduced (Silva & Souza, 2020).…”

Section: Introductionmentioning

confidence: 99%

Stover return and nitrogen application affect soil organic carbon and nitrogen in a double‐season maize field

et al. 2021

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“…Hence, the optimum sowing date was May 5 in the NCP, which is less likely to suffer from chilling stress at the flowering stage and high temperature at the pod filling stage. In addition, the high crop yield and production efficiency depend on the full utilization of light resources by optimizing plant density and sowing date, concurrently, yields may be further enhanced (Maltese et al., 2020). We found that densification with a higher leaf area was associated with greater pod yield over three years, which may be due to the compacted space producing more LAI and achieving higher efficient utilization of available resources (Haro et al., 2022).…”

Section: Discussionmentioning

confidence: 91%

Optimizing sowing date and plant density improve peanut yield by mitigating heat and chilling stress

Liu¹,

Xu²,

Zhao³

et al. 2023

Agronomy Journal

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Peanut (Arachis hypogea L.) yield is dramatically declined by extreme weather stresses under climate change. Adjusting the sowing date and plant density are effective strategies to mitigate these stresses and improve peanut yield. However, a mechanistic understanding of the influence of environmental drivers and an optimized strategy have yet to be developed. Here, a 3‐year field experiment was conducted to evaluate the sowing date (April 25, early sowing; May 5, middle sowing; May 15, late sowing) and plant density (24, 30, and 36 plants m−2 as low, medium, and high) of peanut in the North China Plain. We found that higher pod yield was observed in the middle sowing (∼4492.4 kg ha−1) compared with the early and late sowing (∼3317.2 and 4088.1 kg ha−1, respectively). Meanwhile, the pod yield in high density (∼4162.5 kg ha−1) was 10.6% and 4.7% higher than low and medium density, respectively, mainly due to higher leaf area index. The relative peanut pod yield was positively correlated with the average minimum temperature 5 days before and after the flowering pegging stage, whilst it was negatively correlated with average maximum temperature 5 days before and after pod filling stage. Therefore, optimizing temperature conditions to improve the peanut yield can be achieved by adjusting the sowing date. In conclusion, sowing date and plant density manipulation constitute a useful method to mitigate heat and chilling stress and improve peanut yield.

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