Tools and Techniques for Nitrogen Management in Cereals

Shahzad, Ahmad Naeem; Ahmad, Shakeel

doi:10.1007/978-981-32-9783-8_7

Cited by 34 publications

(4 citation statements)

References 60 publications

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“…Nitrogen is essential for productive farming, and it can be applied from different sources in order to increase yield. These sources contain synthetic fertilizers, atmospheric deposition, fixation by soil microorganisms, and animal manure (Shahzad & Ahmad, 2019). Efficient nitrogen accumulation has become important for sustainable crop production due to the increase in costs of fertilizer and fertilizer applications, as well as the environmental concerns associated with the overapplication of nitrogen fertilizer, resulting in nitrogen leaching and pollution of groundwater (Anas et al., 2020).…”

Section: Introductionmentioning

confidence: 99%

Water and nitrogen management influence on oil and protein concentration in maize

et al. 2023

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The effects of water and nitrogen management on the oil and protein concentration of maize (Zea mays L.) grown in semiarid conditions are not well documented, although it is rather important for local consumers. The objectives of this study were, therefore, to determine the interaction between different nitrogen fertilizer rates and irrigation regimes on nitrogen uptake, and oil and protein content of maize grain.The importance of this study is to understand how the interaction of nitrogen and irrigation management affects the growth of maize and, thus, identify the best management practices to attain an optimal yield. A field experiment was conducted for 2 consecutive years in 2009 and 2010 using 5 nitrogen fertilizer rates, ranging from 100 to 300 kg N ha −1 , and 3 levels of irrigation management, ranging from 375 to 525 mm ha −1 , for a total of 15 treatments. The results showed that nitrogen accumulation in the maize plant linearly increased in applications up to 300 kg N ha −1 even under deficit irrigation (375 mm ha −1 ). For the application of 300 kg N ha −1 under optimum irrigation (525 mm ha −1 ), nitrogen accumulation in the plant's aboveground canopy was significantly increased (e.g., 145.7 and 144.3 kg ha −1 during 2009 and 2010, respectively) as compared to smaller N application rates. The combined nitrogen and irrigation regimes of 300 kg N ha −1 with 525 mm of irrigation resulted in the numerically maximum grain oil concentration, that is, 62 and 65 g kg −1 during 2009 and 2010, respectively, and protein concentration in grains, that is, 116 and 120 g kg −1 during 2009 and 2010, respectively. The regression analyses showed that the protein and oil concentrations of the grain are significantly and positively correlated with total nitrogen uptake. The nitrogen concentration in maize is driven by irrigation water and nitrogen fertilizer rates. Therefore, irrigation water and nitrogen fertilizers are the major inputs for not only improving maize grain yield but also maize grain quality.

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Section: Introductionmentioning

confidence: 99%

Water and nitrogen management influence on oil and protein concentration in maize

et al. 2023

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“…Crop production must be enhanced to fulfil the burgeoning global population's demand for food, feed, and fibre (Shahzad and Ahmad, 2019). During the next 20 to 25 years, global food demand is expected to rise by 50%.…”

Section: Introductionmentioning

confidence: 99%

“…There are few published reports on the effect of sowing time on the phenology of sorghum varieties and grain yield under different irrigation conditions and different environments (Chapman et al, 2000;Fatima et al, 2018Fatima et al, , 2020Shahzad and Ahmad, 2019;Koláčková et al, 2020). Therefore, this research focused on evaluating the response of sorghum cultivars to different irrigation regimes and planting dates under the agroecological conditions of semi-arid at Sahiwal and arid at Multan in Punjab province, Pakistan.…”

Section: Introductionmentioning

confidence: 99%

Productivity of sorghum (Sorghum bicolar L.) at diverse irrigation regimes and sowing dates in semi-arid and arid environment

2021

Turk J Agric For

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“…It seems that synthetic N-fertilizers can effectively fulfill plant needs for N and; therefore, increase crop productivity (Vaillancourt et al, 2018). However, its extensive use may pollute the environment (Chai et al, 2019 andShahzad andAhmad, 2019), besides being of relative low N-use efficiency (Zhang et al, 2020), which counts only to 33% of the applied nitrogen in harvestable yields (Shahzad and Ahmad, 2019). Thus, managing N-inputs is necessary to sustain the environment (Yu et al 2019 andZhang et al 2020).…”

Section: Introductionmentioning

confidence: 99%

Oil Yield and Nutrients Uptake by Irradiated Canola (Brassica napus L.) in Response to Different Nitrogen and Irrigation Water Sources.

Abbas

Soliman

Farid

et al. 2020

EBSS

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A fIelD experiment was conducted at the experimental farm of Soil and Water Research Department, Nuclear Research Centre, Atomic energy Authority, Inshas, egypt to investigate the effects of radiating canola seeds with γ-ray at three doses, i.e. 100, 200 and 300 Gy vs the non-irradiated controlon plant growth performance and yield productivity. Nitrogen fertilization and the source of irrigation water were also matters of concern in this study. All experimental plots received the recommended dose of N-fertilizers (150 kg N ha-1) in either of the following forms:100% mineral-N, 100% organic-N or 50% mineral-N +50% organic-N. Also, a drip irrigation-system was constructed to irrigate canola plants with either freshwater or treated-wastewater. Irradiation, in general, resulted in higher values of canola-dry-weights which were enhanced by increasing gamma ray dose up to 300Gy. Similarly, NPK contents within different plant parts of the irradiated-canola increased in an order coincide with the magnitudes of the used irradiation dose, i.e. 300Gy> 200Gy >100Gy > 0Gy. Moreover, oil yield was significantly increased with increasing gamma dose. On the other hand, the enhancement of NPK uptake was more vigorous in case of combined-fertilization-treatment (50% mineral-N +50% organic-N) than the application of either 100% mineral-N or 100% organic-N. This consequently raised significantly root and shoot dry weights as well as seed yield and canola oil productivity. It seems that irrigation with treated wastewater resulted in higher increases in NPK uptake as well as canola oil yield than irrigation with freshwater. Thus, it can be deduced that the combined-fertilization-treatment and high irradiation dose of gamma-ray had achieved the highest increases in plant DW and productivity (5.3 Mg seed yield ha-1), at the same time these values were higher under irrigation with treated wastewater than those irrigated with fresh water.

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Tools and Techniques for Nitrogen Management in Cereals

Cited by 34 publications

References 60 publications

Water and nitrogen management influence on oil and protein concentration in maize

Water and nitrogen management influence on oil and protein concentration in maize

Productivity of sorghum (Sorghum bicolar L.) at diverse irrigation regimes and sowing dates in semi-arid and arid environment

Oil Yield and Nutrients Uptake by Irradiated Canola (Brassica napus L.) in Response to Different Nitrogen and Irrigation Water Sources.

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