Salinity and fertility stresses modify Ks and readily available water coefficients in maize (case study: Qazvin region)

Saeidi, Reza; Etedali, Hadi Ramezani; Sotoodehnia, Abbas; Kaviani, Abbas; Nazari, Bijan

doi:10.1007/s00271-020-00711-1

Cited by 9 publications

(4 citation statements)

References 23 publications

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“…Maize is very sensitive to the water, salt, and nitrogen content in the root zone [27,33,54,[59][60][61][62]. Plastic mulching may maintain high soil water and nitrogen contents and reduce salt load in the upper 40 cm soil layer, which is very beneficial to maize growth [40,63].…”

Section: Discussionmentioning

confidence: 99%

Investigation of Salt and Nitrogen Distribution under Belt Plastic Film Mulching in Surface- and Drip-Irrigated Maize Field in Hetao Irrigation District

Liu,

Ju,

Shao

et al. 2023

Water

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Hetao Irrigation District (HID) is one of the main regions for maize and sunflower production in North China. However, water resource shortages and soil salinization greatly limit maize and sunflower production. The surface irrigation method is the main irrigation method in HID; however, now, the plastic mulching and drip irrigation area is increasing to reduce irrigation water and enhance crop yield. In this study, the soil water, salt, and nitrogen contents at the 0–100 cm soil layer under plastic mulching and non-mulching conditions with the surface irrigation—fertilizer broadcast practice and drip fertigation method were investigated at the maize elongation and maturation stages in the 2021 and 2022 seasons. The results show that the mulching practice and irrigation methods greatly influenced the soil salt and ionic nitrogen (NO3− and NH4+) distributions and, ultimately, the maize yield. Mulching reduced the soil salt content in the 0–20 cm soil layer by a mean of 35.7% under surface irrigation and by 18.6% under the drip irrigation condition. The NO3− content in the 0–20 cm soil layer with the drip fertigation system was approximately 8 times higher in mulching soil than that out of mulching. However under the surface irrigation condition, the NO3− content was 8–10 times lower under mulching than that out of mulching. The soil salt and NO3− contents were distributed uniformly at each soil layer deeper than a 40 cm depth, indicating minor effects of mulching. The soil NH4+ content decreased as the soil depth increased and distributed uniformly at each soil layer, indicating the insignificant influence of the mulching practice. As a result, the maize yield under the drip-mulching condition was approximately 11% (10.6~11.4%) higher than that under the surface-mulching condition in the two maize seasons. Given that surface irrigation is currently the primary irrigation method in the Hetao Irrigation District (HID), we have proposed three approaches aimed at enhancing maize production through the improvement of nitrogen levels in surface-mulching practices.

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Section: Discussionmentioning

confidence: 99%

Investigation of Salt and Nitrogen Distribution under Belt Plastic Film Mulching in Surface- and Drip-Irrigated Maize Field in Hetao Irrigation District

Liu,

Ju,

Shao

et al. 2023

Water

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“…Among the crops under irrigated cultivation, maize is an important crop for providing human and animal food. For optimal water consumption, irrigation management should be based on the actual water needs of maize (Saeidi, Ramezani Etedali, et al, 2021). The water potential in the soil affects the amount of water absorption by the crop.…”

Section: Introductionmentioning

confidence: 99%

“…Growth stage sensitivity affects the maize ET amount under salinity and fertility (nitrogen deficiency) stresses. Therefore, the ET stress coefficient of maize ( K s ) under salinity and fertility stresses was reported to be 0.96 to 0.34 during the growth stages (Saeidi, Ramezani Etedali, et al, 2021). Therefore, the maize sensitivity to salinity and fertility stresses varied in the growth stages.…”

Section: Introductionmentioning

confidence: 99%

Modelling the relationships between the yield and evapotranspiration of maize under salinity stress and nitrogen deficiency

Saeidi

Sotoodehnia

Etedali

2022

Irrigation and Drainage

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Understanding the intraseasonal sensitivity of crop evapotranspiration (ET) to stresses allows for accurate modelling of crop yield. In this research, the effects of water salinity stress and soil nitrogen deficiency on evapotranspiration (in the growth stages) and maize yield in 2017 and 2018 were investigated.Four treatments of saline water levels of 0.5 (S 0 ), 2.1 (S 1 ), 3.5 (S 2 ) and 5.7 (S 3 ) dS m À1 were combined with four nitrogen fertilization levels of 100% (N 0 ), 75% (N 1 ), 50% (N 2 ) and 25% (N 3 ). The maize ET amounts from the S 0 N 0 to S 3 N 3 treatments decreased from 80 to 55 mm (in the initial stage), 202 to 129 mm (in development), 127 to 80 mm (in the mid) and 14.5 to 10.5 mm (in the late). The dry biomass yield of maize from the S 0 N 0 to S 3 N 3 treatments was equal to 15.3 to 9.23 t.ha À1 . The relative yield of maize was modelled by the additive models of Blank, Stewart and Singh and the multipliable models of Jensen, Rao and Minhas. The results showed that the Stewart and Jensen models were selected as the optimal models. By using the optimal models, the relative yield of maize can be modelled based on the evapotranspiration rate (in the growth stages) under salinity stress and nitrogen deficiency.

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“…Soil salinity caused severe abiotic stresses to crops, the majority of which were ionic stress components that influenced plant development (Xu et al 2020). Specifically, salinity stress decreased leaf growth rate, plant energy for photosynthesis, plant organ formation, and evapotranspiration (Saeidi et al 2021). Hence, developing a novel, simple approach to relieve the soil salinity inhibition of the crop growth rate or to control the salinity amount at a suitable low value, is greatly needed for irrigation and fertigation management.…”

Section: Introductionmentioning

confidence: 99%

Determination of threshold soil salinity with consideration of salinity stress alleviation by applying nitrogen in the arid region

Che

Wang

2021

Irrig Sci

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Soil salinization is a limiting factor for irrigated agriculture, and inappropriate irrigation and fertigation continues to worsen the problem, especially in arid regions. Determination of threshold soil salinity is of great environmental importance for salinity control in irrigation areas. A two consecutive year's cotton field experiment was conducted to develop the dynamic threshold soil salinity (S th ) and quantitatively evaluate the effects of applying nitrogen on salinity stress alleviation. Four irrigation amounts (75%, 100%, 125%, and 150% of crop water requirement) and four nitrogen application rates (195, 255, 315, and 375 kg ha −1 ) were applied with groundwater and brackish water irrigation to produce the dynamic soil salinity (EC 1:5 ) and mineral nitrogen (N) content pools with a wide range of values. Results showed that the EC 1:5 and soil N pools were built-up in a range of 0.16−1.68 dS m −1 and 0.3-17.9 mg kg −1 . The S th for cotton at the seedling, squaring, flower boll, and mature stages were 0.69, 0.74, 1.02, and 1.02 dS m −1 , respectively. Cotton crops presented the highest nitrogen uptake at optimal soil mineral nitrogen values of 12.7 and 16.2 mg kg −1 during the reproductive growth stage, and an appropriate nitrogen application rate increased the S th by 19−126%. In addition, the linear equations of salt-nitrogen relation were determined and used to calculate the soil N under higher soil salinity (above the S th ) for maintaining cotton production. These findings produced a new perspective to determine threshold soil salinity and mitigate soil salt suppression by nitrogen management.

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Salinity and fertility stresses modify Ks and readily available water coefficients in maize (case study: Qazvin region)

Cited by 9 publications

References 23 publications

Investigation of Salt and Nitrogen Distribution under Belt Plastic Film Mulching in Surface- and Drip-Irrigated Maize Field in Hetao Irrigation District

Investigation of Salt and Nitrogen Distribution under Belt Plastic Film Mulching in Surface- and Drip-Irrigated Maize Field in Hetao Irrigation District

Modelling the relationships between the yield and evapotranspiration of maize under salinity stress and nitrogen deficiency

Determination of threshold soil salinity with consideration of salinity stress alleviation by applying nitrogen in the arid region

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