Nitrogen fertilizer promoting salt tolerance of two sorghum varieties under different salt compositions

Elsiddig, Aboagla Mohammed Ibrahim; Zhou, Guisheng; Zhu, Guanglong; Nimir, Nimir Eltyb Ahmed; Suliman, Mohamed Suliman Eltyeb; Ibrahim, Muhi Eldeen Hussien; Ali, Adam Yousif Adam

doi:10.4067/s0718-58392023000100003

Cited by 7 publications

(7 citation statements)

References 27 publications

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“…Since the effect of N on the grain yields of early emerging tillers was limited, the further increase in yields thus mainly resulted from the contribution of late-emerging tillers [ 40 ]. Also, in the study of [ 41 ], growth parameters, plant height, LAI, the number of leaves, and DW, etc. were positively influenced by N treatment.…”

Section: Discussionmentioning

confidence: 99%

Effects of Planting Density and Nitrogen Fertilization on the Growth of Forage Rice in Reclaimed and General Paddy Fields

Jang,

Sharavdorj,

Ahn

et al. 2023

Plants

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The purpose of this study is to identify the different effects exerted by planting density and nitrogen fertilization on high-salinity reclaimed paddy fields (RPF) and general paddy fields (GPFs), and to find the amount of fertilization and the planting density suitable for the growth of forage rice in each paddy field. Nitrogen fertilization with high-salt and low-salt soils, an untreated control plot, treatment with 200 kg/ha, 300 kg/ha, and 400 kg/ha, and planting densities of 30 cm × 10 cm and 30 cm × 16 cm, growth, and feed values were investigated. In both experimental locations, there was no significant change in the soil due to N treatment, but in the case of RPF, electrical conductivity (EC) decreased significantly from more than 5 dS/m to up to 2.87 dS/m during the yellow ripe stage due to the influence of floods and concentrated precipitation in the fields. In all soils, as both the amount of N treatment and the planting density increased, there was a proportional relationship in which the number of tillers and the dry weight also increased, with the occurrence of lodging also being increased. The dry weight, as expected, was 1.5 times higher at a planting distance of 10 cm, rather than 16 cm. In addition, in both locations, the N treatment led to an increase in the dry weight, but when N treatment reached 400 kg/ha (2.0), the dry weight decreased instead. Moreover, although there was no clear difference in feed value according to N treatment, in RPF, the neutral detergent fiber (NDF) was higher than 60%, the relative feed value (RFV) was less than 98, and the total digestible nutrient (TDN) was also low, confirming that the quality of rice was higher in GPF.

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Section: Discussionmentioning

confidence: 99%

Effects of Planting Density and Nitrogen Fertilization on the Growth of Forage Rice in Reclaimed and General Paddy Fields

Jang,

Sharavdorj,

Ahn

et al. 2023

Plants

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“…It is believed that 30% of agricultural land could be lost within the next 25 years due to salt stress, with a total loss that could reach 50% by 2050. According to the geography and environmental conditions, different types of soluble salts are found in different fields including sodium sulfate and sodium chloride [9]. Depending on the nitrogen source, salinity has a variable impact on the intake of several nutrients like plants becoming more sensitive when ammonia is used as a source of fertilizer.…”

Section: Salinity As Abiotic Stressmentioning

confidence: 99%

“…The use of nitrogen fertilizers appeared to have a beneficial effect on reducing alfalfa's salt stress and preserving the production of shoot biomass, but N fertilization may restrict the plant's capacity to fix atmospheric N [40]. N fertilizer was successful in alleviating the adverse impacts of NaCl and Na 2 SO 4 in Sorghum when the applied concentration of Nitrogen was 12 g N kg −1 of soil [9].…”

Section: In Plantsmentioning

confidence: 99%

“…Salinity is one of the major abiotic stresses that can be mitigated by applying appropriate amounts of nitrogen, which helps regulate ion balance, alleviate osmotic stress, and reduce competition for water. For example, 12 g/kg of soil proved to be effective in enhancing salinity tolerance in sorghum crops [9]. China, India, the USA, Pakistan, Iran, Egypt, Thailand, Australia, Argentina, and South Africa are among the countries where salinity poses a significant problem for crop productivity.…”

Section: Introductionmentioning

confidence: 99%

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Plant Nitrogen Metabolism: Balancing Resilience to Nutritional Stress and Abiotic Challenges

Farhan,

Sathish,

Kiran

et al. 2024

Phyton

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Plant growth and resilience to abiotic stresses, such as soil salinity and drought, depend intricately on nitrogen metabolism. This review explores nitrogen's regulatory role in plant responses to these challenges, unveiling a dynamic interplay between nitrogen availability and abiotic stress. In the context of soil salinity, a nuanced relationship emerges, featuring both antagonistic and synergistic interactions between salinity and nitrogen levels. Salinity-induced chlorophyll depletion in plants can be alleviated by optimal nitrogen supplementation; however, excessive nitrogen can exacerbate salinity stress. We delve into the complexities of this interaction and its agricultural implications. Nitrogen, a vital element within essential plant structures like chloroplasts, elicits diverse responses based on its availability. This review comprehensively examines manifestations of nitrogen deficiency and toxicity across various crop types, including cereals, vegetables, legumes, and fruits. Furthermore, we explore the broader consequences of nitrogen products, such as N 2 O, NO 2 , and ammonia, on human health. Understanding the intricate relationship between nitrogen and salinity, especially chloride accumulation in nitrate-fed plants and sodium buildup in ammonium-fed plants, is pivotal for optimizing crop nitrogen management. However, prudent nitrogen use is essential, as overapplication can exacerbate nitrogen-related issues. Nitrogen Use Efficiency (NUE) is of paramount importance in addressing salinity challenges and enhancing sustainable crop productivity. Achieving this goal requires advancements in crop varieties with efficient nitrogen utilization, precise timing and placement of nitrogen fertilizer application, and thoughtful nitrogen source selection to mitigate

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“…Supplementation of chemical and organic fertilizers also upgraded the soil nutrient content. Since different types of crops required different amounts of nutrients at different growth stages during different reclamation years [43,44], soil nutrients, respectively, showed a certain pattern with increasing reclamation years, and the variations of nitrate nitrogen (NO 3 − -N), available nitrogen (AN), available phosphorous (AP), and soil organic matter content (SOC) were significantly greater in the shallow surface layers than those of the deeper layers (Figure 4).…”

Section: Soil Nutrients and Reclamation Yearsmentioning

confidence: 99%

Soil Quality Improvement with Increasing Reclamation Years in the Yellow River Delta

Liu,

Li,

Zhang

et al. 2023

Agronomy

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The saline soils in the Yellow River Delta are primarily affected by seawater intrusion resulting from the intersection of land and sea, which exhibit variations in salinity. The quality of these soils is also influenced by anthropogenic reclamation, including fertilization and irrigation. This study quantitatively evaluated the distinct soil properties and soil quality characteristics of the Yellow River Delta during different reclamation years (i.e., 0a, 1a, 5a, 10a, and 20a) using principal component analysis (PCA) and the Soil Quality Index (SQI). The findings indicated that the soil salt content (SSC) significantly decreased (p < 0.05) from 6.60 g/kg in the initial reclamation year (0a) to 1.63 g/kg in the 10th year (10a) and then slightly increased to 2.85 g/kg in the 20th year (20a). Consequently, the soil salinity level shifted from saline soil to slight salinity and then increased to medium salinity. Ammonium nitrogen (NH4+-N) notably increased by 8.31 mg/kg during the first five years of reclamation (0a to 5a) and gradually decreased by 2.56 mg/kg in the 20th year (20a). On the other hand, nitrate nitrogen (NO3−-N) experienced a significant decrease of 2–5 times after reclamation but continued to increase by 8.96 mg/kg with subsequent reclamation years. The available nitrogen (AN), available phosphorus (AP), and soil organic carbon (SOC) exhibited a significant increase of 24.87 mg/kg, 10.11 mg/kg, and 6.76 g/kg, respectively, with increasing reclamation years. However, available potassium (AK) gradually decreased after reclamation and then increased in the 20th year (20a). The values of SQI for different reclamation years were 0.307 for 0a, 0.339 for 1a, 0.320 for 5a, 0.318 for 10a, and 0.327 for 20a, indicating an increasing trend with increasing reclamation years. It was discovered that long-term reclamation significantly reduced soil salinity and improved soil quality, leading to the sustainable development of reclaimed saline soils in the Yellow River Delta.

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Nitrogen fertilizer promoting salt tolerance of two sorghum varieties under different salt compositions

Cited by 7 publications

References 27 publications

Effects of Planting Density and Nitrogen Fertilization on the Growth of Forage Rice in Reclaimed and General Paddy Fields

Effects of Planting Density and Nitrogen Fertilization on the Growth of Forage Rice in Reclaimed and General Paddy Fields

Plant Nitrogen Metabolism: Balancing Resilience to Nutritional Stress and Abiotic Challenges

Soil Quality Improvement with Increasing Reclamation Years in the Yellow River Delta

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