Synergistic Regulation of Nitrogen and Sulfur on Redox Balance of Maize Leaves and Amino Acids Balance of Grains

Liu, Shuoran; Cui, Shuai; Zhang, Xue; Yin, Wang; Mi, Guohua; Gao, Qiang

doi:10.3389/fpls.2020.576718

Cited by 11 publications

(8 citation statements)

References 82 publications

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“…Different nutrient composition and N release mechanisms in different SCU products may directly influence crop productivity. In our study, SCU contains 39% N and 13.8% sulphur, and there could be a synergistic effect of sulphur and nitrogen on cauliflower productivity, as reported in earlier studies (Liu et al, 2020;Rossini et al, 2018). Perveen et al (2021) reported that PCU in combination with sulphur fertilization increased sunflower yield by 32% over CU, without sulphur addition.…”

Section: Discussionsupporting

confidence: 87%

Enhanced-efficiency nitrogen fertilizer boosts cauliflower productivity and farmers’ income: Multi-location and multi-year field trials across Nepal

Pandit¹,

Gaihre²,

Gautam

et al. 2022

Ex. Agric.

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Summary Enhanced-efficiency nitrogen (N) fertilizers (EENFs) such as slow-release polymer-coated urea (PCU) and deep placement of urea briquettes (UBs) improve nitrogen use efficiency (NUE) by reducing N losses and increasing nitrogen uptake by plants. Multilocation field trials (81) with cauliflower were conducted across two agroecological regions covering seven districts during two crop-growing seasons between 2018 and 2020 to assess the potential of three EENFs, i.e., PCU, sulphur-coated urea (SCU) and UB for increasing curd yields, agronomic NUE (AEN) and economic benefits over conventional urea (CU). Results were compared with farmers’ current nutrient management practice (FP): applying CU at 58.5 kg N ha−1 (ranging from 33 to 88 kg N ha−1). The N rates in three EENF treatments were 33% lower (100 kg N ha−1), considering their higher N use efficiency, than for CU (150 kg N ha−1). We hypothesize that EENFs produce similar or even higher yields compared with CU. For both years, all three EENFs resulted in significantly (p < 0.05) higher curd yields than CU (36.7 ± 1.1 t ha−1). PCU, SCU and UB increased yields by 21, 21 and 24% over those for CU. The yield increment was much higher (PCU, 44%; SCU, 43%; UB, 46%) than for FP. Similarly, PCU, SCU and UB increased the partial factor productivity of N (PFPN) by 91, 90 and 94% and the AEN by 133, 129 and 138%, respectively, compared with CU. The gross margins of all three EENFs were similar: an average 25% more than with CU and 51% more than with FP. These results suggest that EENFs could help increase productivity and farmer income while considerably reducing N input, compared to use of CU. The government of Nepal should promote these EENFs by removing barriers to access for the associated fertilizers and foster their use through extension.

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Section: Discussionsupporting

confidence: 87%

Enhanced-efficiency nitrogen fertilizer boosts cauliflower productivity and farmers’ income: Multi-location and multi-year field trials across Nepal

Pandit¹,

Gaihre²,

Gautam

et al. 2022

Ex. Agric.

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“…No significant negative correlations with any of the nutrients were found. Various researchers have reported synergistic interactions between the N and S of different crop plants, which is mainly explained by the central role of S and N in protein synthesis [ 31 , 32 , 33 ]. In addition to N, a synergistic effect of S with P and K was also previously confirmed [ 33 ].…”

Section: Resultsmentioning

confidence: 99%

Leaf Nutrient Status of Commercially Grown Strawberries in Latvia, 2014–2022: A Possible Yield-Limiting Factor

Osvalde

Karlsons

Cekstere

et al. 2023

Plants

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The present study was carried out to evaluate the leaf nutrient status of commercially grown strawberries in Latvia during 2014–2022. The results of N, P, K, Ca, Mg, S, Fe, Mn, Zn, Cu, Mo and B in 200 strawberry leaf samples from different strawberry-producing farms were analysed over three periods: 2014–2016, 2017–2019, and 2020–2022. According to leaf analyses, plant fertilization was only partly well managed by the growers. During the research period, strawberries in Latvia were generally sufficiently supplied with N, P, K, Mg, Fe, Mn, Mo, and B, while the level of Ca, S, Zn, and Cu was considered low. The deficiency of these nutrients was characteristic for more than 50% of the samples. Since Ca, S, Zn, and Cu are essential for berry formation and quality and contribute to stress resistance; their deficiency could be one of the limiting factors for strawberry yield. The significant positive correlations found between nutrients, including deficient ones, confirmed their close relationship in the uptake process and the importance of sufficient supply. The results clearly indicated that fertilization could currently be an issue that limits the strawberry harvest in Latvia, and adequate provisions of Ca, S, Zn, and B should be the main focus.

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“…In plants, N is essential for protein formation, and any perturbation on its uptake and use will have metabolic consequences (Hawkesford et al., 2012). It has been shown that an adequate supply of N and S is relevant for an adequate redox balance in maize leaves (S. Liu et al., 2020). Higher glutamine synthetase protein levels in wheat were detected in WDS primed plants, indicating the importance of N metabolism under repeated WDS (X. Wang et al., 2014).…”

Section: Discussionmentioning

confidence: 99%

Nitrogen improves the recovery of maize plants under repeated drought stress

Maywald

Pridybailo

Ludewig

2022

J. Plant Nutr. Soil Sci.

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Background Modern high‐yielding crops, such as maize, are characterized by extensive yield stability across various environments and can cope with repetitive periods of moderate water shortage. However, there is conflicting evidence on how the nutritional status of the plants contributes to stress resilience and whether farmers have management options via nitrogen fertilization. Aims We aimed at identifying factors relevant for improved growth recovery of maize after repeated water deficit stress (WDS). Methods A pot experiment with maize and repeated WDS was conducted. Growth and recovery from stress and physiological parameters were measured. Results The growth penalty of juvenile maize plants exposed to a moderate WDS was lost after additional exposure to a 2‐week WDS. Primed plants transiently contained more osmolytes and performed superior in the second recovery phase when nitrogen fertilization was applied directly before the second WDS. Nitrogen fertilization did not affect the osmolyte quantity, and primed plants had transiently higher antioxidant levels, higher reactive oxygen species production and recovered more quickly with N addition. Conclusions Pot experiments suggest that nitrogen fertilization may be an option to improve maize resilience to repeated WDS, a hypothesis that should be tested more rigorously in the field.

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Synergistic Regulation of Nitrogen and Sulfur on Redox Balance of Maize Leaves and Amino Acids Balance of Grains

Cited by 11 publications

References 82 publications

Enhanced-efficiency nitrogen fertilizer boosts cauliflower productivity and farmers’ income: Multi-location and multi-year field trials across Nepal

Enhanced-efficiency nitrogen fertilizer boosts cauliflower productivity and farmers’ income: Multi-location and multi-year field trials across Nepal

Leaf Nutrient Status of Commercially Grown Strawberries in Latvia, 2014–2022: A Possible Yield-Limiting Factor

Nitrogen improves the recovery of maize plants under repeated drought stress

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