Role of exogenous nitrogen supply in alleviating the deficit irrigation stress in wheat plants

Agami, Ramadan A.; Alamri, Saad; El–Mageed, Taia A. Abd; Abousekken, M. S.; Hashem, Mohamed

doi:10.1016/j.agwat.2018.08.034

Cited by 88 publications

(51 citation statements)

References 53 publications

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“…Reduction of carotenoid content can be due to oxidation by ROS and destruction of their structure. The results of Agami et al (2018) confirmed that the total of chlorophyll and carotenoid concentrations significantly decreased in wheat leaves due to deficit irrigation. In contrast, under deficit irrigation conditions, N provision, specifically at the highest level, significantly raised total carotenoids and chlorophyll by 20.69% and 66.23%, respectively, compared with non-fertilized treatment.…”

Section: Photosynthetic Pigmentssupporting

confidence: 61%

“…In contrast, under deficit irrigation conditions, N provision, specifically at the highest level, significantly raised total carotenoids and chlorophyll by 20.69% and 66.23%, respectively, compared with non-fertilized treatment. In full irrigation condition, the application of N at both levels increased total carotenoids and chlorophyll compared with non-fertilized condition (Agami et al 2018). The reason for the increase in leaf carotenoid concentration due to zeolite usage in the soil may be attributable to the super absorbent role of this substance.…”

Section: Photosynthetic Pigmentsmentioning

confidence: 92%

“…The results showed that water-deficit stress increased soluble carbohydrates of the leaf. The increase of soluble sugars under water-deficit stress has been reported in wheat (Agami et al 2018). It has also been reported that plants increase the compounds like carbohydrates, to maintain osmotic balance and get the ability to absorb more water from the rhizosphere in order to improve osmotic adjustment (Abdalla and El-Khoshiban 2007).…”

Section: Leaf Soluble Carbohydratesmentioning

confidence: 93%

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Effect of Zeolite on Nitrogen Use Efficiency and Physiological and Biomass Traits of Amaranth (Amaranthus hypochondriacus) Under Water-Deficit Stress Conditions

Karami

Hadi

Tajbaksh

et al. 2020

J Soil Sci Plant Nutr

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In the present study, the interactive effect of irrigation and nitrogen (N) on biomass and physiological characteristics of amaranth and the influence of zeolite in this interaction were investigated. A 2-year field experiment was conducted as split-plot factorial in a randomized complete block design in three replicates. The main factor consisted of different levels of deficit irrigation (DI) such as irrigation after 40 (DI 1), 60 (DI 2), and 75% (DI 3) depletion of soil available water. The subplots derived from a combination of different factors including nitrogen rates (zero (N 0), 80 (N 1), 160 (N 2), and 240 (N 3) kg urea ha −1) and zeolite levels (zero (Z 0) and 10 (Z 1) ton ha −1). Reduction of soil moisture resulted in a decrease in the amount of chlorophylls, carotenoids, protein, maximum quantum yield of photosystem II (F v /F m ratio), and biomass of amaranth. In contrast, it resulted in the increase of antioxidant enzyme activity, soluble carbohydrates, and proline. However, nitrogen application led to an increase in the contents of chlorophyll, carotenoids, protein, antioxidant enzyme activity, F v /F m ratio, and biomass of amaranth and a decrease in the soluble carbohydrates and proline. Zeolite treatment by increasing the content of chlorophylls (16%), carotenoids (19%), protein (25%), F v /F m ratio (11%) as well as enchantment of soluble carbohydrate content and antioxidant enzyme activity and by decreasing the proline content (40%) moderated the adverse consequences of water-deficit stress and improved biomass of amaranth. In general, the use of zeolite along with the lowest rate of nitrogen fertilizer (80 kg urea ha −1) reduced the harmful effects of the oxidative stress caused by water scarcity and improved the growth conditions for the plant and thus produced maximum biomass of amaranth plant under moderate and severe deficit irrigations.

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Section: Photosynthetic Pigmentssupporting

confidence: 61%

Section: Photosynthetic Pigmentsmentioning

confidence: 92%

Section: Leaf Soluble Carbohydratesmentioning

confidence: 93%

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Effect of Zeolite on Nitrogen Use Efficiency and Physiological and Biomass Traits of Amaranth (Amaranthus hypochondriacus) Under Water-Deficit Stress Conditions

Karami

Hadi

Tajbaksh

et al. 2020

J Soil Sci Plant Nutr

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“…In dry conditions, topdressing with organic fertilizers that contain nitrogen positively influenced the values of cited yield components. Abid et al (2016) and Agami et al (2018) also referenced the positive impact of fertilization with nitrogen on the yield of wheat in dry conditions.…”

Section: Resultsmentioning

confidence: 99%

Agronomic traits of einkorn and emmer under different seeding rates and topdressing with organic fertilizers

Pospišil¹,

Pospı́šil²,

Brčić³

2020

Turk J Agric For

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Introduction Einkorn (Triticum monococcum subsp. monococcum) and emmer (Triticum dicoccon) are modestly represented cereals in Europe, but due to an increased demand for socalled functional food with favorable chemical contents, as well as the need for greater biodiversity, interest in the production of these cereals is increasing. Einkorn and emmer are classified as hulled cereals whose grains are firmly enclosed by glumes that do not peel off during harvest. Einkorn is an important source of genes for the enhancement of common wheat (Karagöz and Zencirci, 2005; Zaharieva and Monneveux, 2014). The productivity of einkorn and emmer is significantly lower compared to common wheat, but their humble demands in terms of agroecological conditions, fertilization, and protection make them suitable for organic production (Zaharieva and Monneveux, 2014; Čurná and Lacko-Bartošová, 2015). Einkorn and, to a certain extent, emmer are also more resistant to fungal diseases (Pasquini et al., 1989; Moudrý et al., 2011). Konvalina et al. (2010) pointed to the superior resistance to powdery mildew and brown rust in einkorn and emmer relative to spelt and common wheat. The principal limiting factor for yield increase in einkorn and emmer lies in their low harvest index (Konvalina et al., 2010). Einkorn and emmer are suitable for production on marginal soils where more economically profitable cultivars fail to thrive (Troccoli and Codianni, 2005; Konvalina et al., 2010). Hulled wheats are essential genetic resources for resolving problems of stress (Aslan et al., 2016). Renewed interest in the production of these cereals is a result of increased demand for food of higher nutritional value. Einkorn and emmer are both characterized by a very favorable chemical composition in the grain, i.e. the grains are rich in fiber, proteins, minerals, carotenoids, antioxidants, and vitamins (

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“…This result indicated that fertilization had obvious water regulating effect, and proper fertilization could improve water‐use efficiency (Thompson et al, 2000). Fertilization can increase the soil water holding capacity (Wang, Liu, & Dang, 2011), and successfully matching fertilizer availability with crop absorption improves water‐use efficiency and increases yield (Agami, Alamri, El‐Mageed, Abousekken, & Hashem, 2018). Other studies have indicated that fertilizers increase the formation of soil aggregates (>0.25 mm) and the levels of nutrients in soil (Liu et al, 2013).…”

Section: Discussionmentioning

confidence: 99%

Optimizing water and phosphorus management to improve hay yield and water‐ and phosphorus‐use efficiency in alfalfa under drip irrigation

Zhang

Liu

et al. 2020

Food Science & Nutrition

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Alfalfa (Medicago sativa L.) is an important forage legume in arid areas, but limited water resources and low fertilizer utilization have restricted its agricultural development. Meanwhile, studies on the effects of integrated water and phosphorus on production performance and water-use efficiency and phosphorus-use efficiency of alfalfa, especially on hay yield, phosphorus accumulation, and total phosphorus uptake are rarely reported under drip irrigation.The treatments were a factorial combination of three irrigation rates (5,250, 6,000, and 6,750 m 3 /ha per year) and four P rates (0, 50, 100, and 150 kg/ha per year) and consisted of 12 treatments for water and P management, arranged in a randomized complete block design with three replicates. Total hay yield and water-use efficiency and phosphorus-use efficiency of alfalfa in P 2 treatment were significantly greater than those in the P 1 and P 3 treatments (p < .05), and the total hay yield of alfalfa with phosphorus application increased by 7.43%-29.87% compared with that in the nonphosphorus (P 0 ) treatment under the same irrigation amount. The total phosphorus and available phosphorus concentrations in the 0-20 cm soil layer were greater than those in the 20-40 cm and 40-60 cm soil layers compared with those in the P 0 treatment. Correlation analyses showed that total hay yield was significantly positively correlated with total phosphorus uptake and wateruse efficiency (p < .01). The accumulated phosphorus concentration was significantly positively correlated with total phosphorus and available phosphorus concentration (p < .01) and was positively correlated with the phosphorus-use efficiency (p < .05). The membership function method was used to evaluate all the indicators, and the three treatments that had the greatest influence on the production performance of alfalfa were, in order, W 2 P 2 > W 3 P 2 > W 1 P 2 . Therefore, an irrigation rate of 6,000 m 3 /ha and a phosphorus application rate of 100 kg/ha per year should be considered as the best management for both high yield and water-use efficiency and phosphorus-use efficiency of alfalfa. K E Y W O R D Salfalfa, available phosphorus, drip irrigation, hay yield, total phosphorus, water-and phosphorus-use efficiency | 2407 ZHANG et Al.

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Role of exogenous nitrogen supply in alleviating the deficit irrigation stress in wheat plants

Cited by 88 publications

References 53 publications

Effect of Zeolite on Nitrogen Use Efficiency and Physiological and Biomass Traits of Amaranth (Amaranthus hypochondriacus) Under Water-Deficit Stress Conditions

Effect of Zeolite on Nitrogen Use Efficiency and Physiological and Biomass Traits of Amaranth (Amaranthus hypochondriacus) Under Water-Deficit Stress Conditions

Agronomic traits of einkorn and emmer under different seeding rates and topdressing with organic fertilizers

Optimizing water and phosphorus management to improve hay yield and water‐ and phosphorus‐use efficiency in alfalfa under drip irrigation

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