Nitrogen rate for cotton should be adjusted according to water availability in arid regions

Wu, Baojian; Zhang, Li; Tian, Jingshan; Zhang, Guojuan; Zhang, Wangfeng

doi:10.1016/j.fcr.2022.108606

Cited by 20 publications

(5 citation statements)

References 63 publications

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“…It is also verify that the loss of yield resulting from limited irrigation can be compensated for by appropriately increasing the nitrogen fertilizer in dryland elds (Dai et al 2015). Related results have also been reported in maize and cotton, with adequate water supply, moderate N application can achieve high crop yields, while with limited water supply, adequate N strategy can still achieve high crop yields (Di Paolo and Rinaldi 2008; Wu et al 2022). In Henan Province, when the N application rate exceeded 180 kg N ha − 1 , the winter wheat yield did not increase further and stabilized at 6300kg N ha − 1 (Zhao et al 2023).…”

Section: Discussionsupporting

confidence: 60%

Optimizing nitrogen rate under single irrigation can maintained a high yield and increased economic benefits in winter wheat

Bao,

Guo,

Liu

et al. 2024

Preprint

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Aims Optimizing winter wheat irrigation and nitrogen fertilizer management is crucial for ensuring sustainable agricultural development in North China Plain (NCP). However, the optimal nitrogen management, especially in single irrigation in spring for winter wheat, is not clear. Methods In 2020–2022, we conducted a field experiment to explore the effects of different irrigation levels (W2, irrigated of 75 mm at the spring 3-leaf stage and anthesis stage, respectively; W1, irrigated of 75 mm at spring 4-leaf stage) and nitrogen levels (180, 240, 300 and 360 kg N ha− 1; denoted as N1, N2, N3 and N4, respectively) on grain yield, water consumption and economic efficiency. Results The findings demonstrated that W1 reduced evapotranspiration, increased soil water consumption and enhanced water consumption from jointing to anthesis stage. However, W1 irrigation resulted 3.3–11.6% yield loss compared to W2. Adjusting nitrogen fertilizer inputs (300 kg N ha− 1) under W1 can achieves high spike number, flag leaf photosynthetic capacity and harvest index, ultimately resulted in a highest grain yield (8351.5 kg ha− 1). Additionally, W1N3 obtained the highest water use efficiency (20.5 kg ha− 1 mm− 1), irrigation water use efficiency (111.4 kg ha− 1 mm− 1), nitrogen agronomic efficiency (11.2 kg kg− 1), net income and benefit-cost ratio. Based on the water and nitrogen inputs to the yield and economic efficiency model, applying N at 278.8–297.8 kg ha− 1 under W1 conditions achieved 95–100% of the maximum yield and net income. Conclusions These results may provide a scientific foundation for optimizing irrigation and nitrogen management and enhancing local farmers’ economic efficiency.

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Section: Discussionsupporting

confidence: 60%

Optimizing nitrogen rate under single irrigation can maintained a high yield and increased economic benefits in winter wheat

Bao,

Guo,

Liu

et al. 2024

Preprint

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“…The maximum RDM (2.64 g) was obtained when an estimated dose of 138.5 kg ha -1 of N was applied, and from this value, there was a decrease (Figure 3A). In a 2-year field experiment conducted in China, Wu et al (2022) verified that the application of 272 kg ha -1 of N maximized the cotton root dry matter. Meanwhile, Chen et al (2020), evaluating the influence of different nitrogen doses (0, 120, 240, and 480 kg ha -1 of N) in a transgenic cotton cultivar under field conditions, found that the application of 240 kg ha -1 of N promoted an increase of 36.06% in root dry matter compared to the treatment without nitrogen application.…”

Section: Resultsmentioning

confidence: 92%

Cotton nitrogen doses in the edaphoclimatical conditions of northeastern Brazil

Silva¹,

Ribeiro²,

Silva³

et al. 2023

Braz J Biosyst Eng

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The study of cotton plant responses to nitrogen fertilization in different climate and soil conditions is essential for the correct management of nitrogen in this crop. Therefore, the objective of the present study was to evaluate the responses of cotton plants to nitrogen fertilization in the edaphoclimatic conditions of the Cariri region, located in the northeastern State of Ceará, Brazil. The experiment was conducted in an experimental area at the CENTEC (Centre for Technological Education) School of Technology (FATEC - Cariri campus), located in the city of Juazeiro do Norte, Ceará State. The statistical design adopted was Completely Randomized Design (CRD). The treatments were composed from the combination of four doses of nitrogen (0, 60, 120, and 180 kg ha-1 of N, equivalent to 0, 50, 100, and 150% of the N recommendation for the crop) with four replications. Urea was used as a nitrogen source. At 42 days after sowing, the plants were collected. Plant height, number of leaves, stem diameter, leaf area, absolute growth rate, shoot and root dry matter, total and nitrogen use efficiency were evaluated. The different doses of nitrogen significantly influenced all the analysed variables. In general, nitrogen doses greater than 120 kg ha-1 of N were shown to impair the growth and dry matter production of the cotton plant in the climate and soil conditions of the Cariri region, northeastern Brazil. In addition, excessive nitrogen fertilization was shown to reduce the efficiency of nitrogen use by the cotton crop.

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“…Light attenuation is increased with the increase in LT and chlorophyll content (Terashima & Saeki, 1983), since it tends to typify a greater light interception (Evans & Poorter, 2001;Niinemets & Sack, 2006). Similarly, we speculate that thicker leaves and higher SPAD may be explained by the selective pressure of higher light-capturing under domestication (Figures 1 and 2), especially in modern cotton fields with more shading due to the high plant population densities (Wu et al, 2022;Yao et al, 2016). Herbaceous crop species increase the canopy utilization of light during early plant domestication (Milla et al, 2014).…”

Section: Domestication Is Capable Of Increasing Light Use Efficiency ...mentioning

confidence: 84%

The effect of shift in physiological and anatomical traits on light use efficiency under cotton domestication

Lei

Han

Chen

et al. 2023

Physiologia Plantarum

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The effect of crop domestication on photosynthetic productivity has been well‐studied, but at present, none examines its impacts on leaf anatomy and, consequently, light use efficiency in cotton. We investigated leaf and vein anatomy traits, light use efficiency (LUE) and gas exchange in 26 wild and 30 domesticated genotypes of cotton grown under field conditions. The results showed that domestication resulted in a higher photosynthetic rate, higher stomatal conductance, and lower lamina mass per area. Higher LUE was underpinned by the thicker leaves, greater vein volume, elongated palisade and higher chlorophyll content, although there was no difference in the apparent quantum yield. The lower vein mass per area in domesticated genotypes contributed to the reduction of lamina mass per area, but there was no decrease in vein length per area. Our study suggests that domestication has triggered a considerable shift in physiological and anatomical traits to support the increase in LUE.

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Nitrogen rate for cotton should be adjusted according to water availability in arid regions

Cited by 20 publications

References 63 publications

Optimizing nitrogen rate under single irrigation can maintained a high yield and increased economic benefits in winter wheat

Optimizing nitrogen rate under single irrigation can maintained a high yield and increased economic benefits in winter wheat

Cotton nitrogen doses in the edaphoclimatical conditions of northeastern Brazil

The effect of shift in physiological and anatomical traits on light use efficiency under cotton domestication

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