Effects of salinity and fertigation practice on cotton yield and 15N recovery

Hou, Zhenan; Chen, Weiping; Xiao, Li; Xiu, Lin; Wu, Laosheng

doi:10.1016/j.agwat.2009.04.019

Cited by 55 publications

(26 citation statements)

References 43 publications

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“…For instance, Vulkan-Levy et al (1998) found that with more water being applied, cotton yields increased with an increase in salinity. Hou et al (2009) similarly showed that seed cotton yield, dry matter, and N uptake significantly increased as the soil salinity level increased from 2.5 to 6.3 dS/m.…”

Section: Crop Yieldsmentioning

confidence: 75%

“…While the mean annual precipitation is only 58 mm, the potential evapotranspiration rate equals 2,540 mm ). Mulched drip irrigation, which saves water and increases water use efficiency as compared to furrow irrigation (Ibraginmov et al 2007), is widely used in the area to irrigate cotton, a major cash crop in Xinjiang (Hou et al 2009). Cotton yields generally decrease with a reduction in irrigation, irrespective of whether conventional irrigation technologies or drip irrigation is used (Singh et al 2010;Ü nlü et al 2011), and are also limited by poor quality of irrigation water and related problems of soil salinization (Leidi and Saiz 1997;Vulkan-Levy et al 1998;Qadir and Shams 1997;Henggeler 2004;Chen et al 2010).…”

Section: Introductionmentioning

confidence: 99%

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Evaluation of mulched drip irrigation for cotton in arid Northwest China

et al. 2013

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Field experiments were conducted in arid Southern Xinjiang, Northwest China, for 3 years to evaluate sustainable irrigation regimes for cotton. The experiments involved mulched drip irrigation during the growing season and flood irrigation afterward. The drip irrigation experiments included control experiments, experiments with deficit irrigation during one crop growth stage, and alternative irrigation schemes in which freshwater was used during one growth stage and relatively saline water in the others. The average cotton yield over 3 years varied between 3,575 and 5,095 kg/ha, and the irrigation water productivity between 0.91 and 1.16 kg/m 3 . Crop sensitivities to water stress during the different growth stages ranged from early flowering-belling (most sensitive) [ seedling [ budding [ late flowering-belling (least sensitive), while sensitivities to salt stress ranged from late flowering-belling [ budding [ seedling [ early flowering-belling. Although mulched drip irrigation during the growing season caused an increase in salinity in the root zone, flood irrigation after harvesting leached the accumulated salts to below background levels. Numerical simulations, based on the 3-year experiments and extended by another 20 years, suggest that mulched drip irrigation using alternatively fresh and brackish water during the growing season and flood irrigation with freshwater after harvesting is a sustainable irrigation practice that should not lead to soil salinization.

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Section: Crop Yieldsmentioning

confidence: 75%

Section: Introductionmentioning

confidence: 99%

Evaluation of mulched drip irrigation for cotton in arid Northwest China

et al. 2013

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“…Water scarcity is one of the most critical constraints for sustainable cotton production. Drip irrigation under mulch is considered as the most efficient water-saving method because this system can uniformly distribute water, accurately control the amount of applied water, and reduce evaporation [1][2][3]. Hence, this method is widely practiced in semi-arid and arid regions [3,4].…”

Section: Introductionmentioning

confidence: 99%

Evaluating the Effects of Mulch and Irrigation Amount on Soil Water Distribution and Root Zone Water Balance Using HYDRUS-2D

Han

Zhao

Feng

et al. 2015

Water

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Water scarcity is the most critical constraint for sustainable cotton production in Xinjiang Province, northwest China. Drip irrigation under mulch is a major water-saving irrigation method that has been widely practiced for cotton production in Xinjiang. The performance of such an irrigation system should be evaluated for proper design and management. Therefore, a field experiment and a simulation study were conducted to (1) determine a modeling approach that can be applied to manage drip irrigation under mulch for cotton production in this region; and (2) examine the effects of irrigation amount and mulch on soil water distribution and root zone water balance components. In the experiment, four irrigation treatments were used: T1, 166. 2623T1 to T4, while a lot of stored soil water in the root zone was utilized and a huge amount of water was recharged from the layer below 70 cm to compensate for the decrease in irrigation amount. Mulch significantly reduced evaporation by 11.7 mm and increased root water uptake by 11.2 mm. Our simulation study suggests that this model can be applied to provide assistance in designing drip irrigation systems and developing irrigation strategies.

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“…Characteristics of the cotton root distribution under different amounts of irrigation (Hu et al, 2009;Shen et al, 2012), relationships between the cotton production and irrigation strategies (Yan et al, 2009), and the spatial and temporal distribution of water and salts in the soil (Hou et al, 2009;Liu et al, 2012) have been studied in detail using both field experiments and numerical modeling. However, no research has been carried out to evaluate the impact of groundwater on cotton growth and the root zone water balance, which are important issues that need to be considered to design a sustainable land management of this arid region.…”

Section: Introductionmentioning

confidence: 99%

“…To solve these problems, many researchers have studied water flow, solute transport, and root water uptake in this region and obtained a certain conceptual understanding of the system (Hou et al, 2009;Hu et al, 2009;Kang et al, 2012;Shen et al, 2012). Characteristics of the cotton root distribution under different amounts of irrigation (Hu et al, 2009;Shen et al, 2012), relationships between the cotton production and irrigation strategies (Yan et al, 2009), and the spatial and temporal distribution of water and salts in the soil (Hou et al, 2009;Liu et al, 2012) have been studied in detail using both field experiments and numerical modeling.…”

Section: Introductionmentioning

confidence: 99%

Evaluating the impact of groundwater on cotton growth and root zone water balance using Hydrus-1D coupled with a crop growth model

Han

Zhao

Šimůnek

et al. 2015

Agricultural Water Management

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a b s t r a c tGroundwater is an important factor that needs to be considered when evaluating the water balance of the soil-plant-atmosphere system and the sustainable development of arid oases. However, the impact of shallow groundwater on the root zone water balance and cotton growth is not fully understood. In this study, we have first analyzed the influence of the groundwater table depth on the seasonal maximum leaf area index of cotton, the average seasonal water stress, cotton yield, actual transpiration, actual evaporation, and capillary rise using experimental data collected at the Aksu water balance station, in Xinjiang, northwest of China and the Hydrus-1D variably-saturated soil water flow model coupled with a simplified crop growth model from SWAT. The coupled model has been first calibrated and validated using field observations of soil water content, leaf area index, cotton height, the above ground biomass, and cotton yield comparisons between measured and modeled variables have shown a reasonable agreement for all variables. Additionally, with a validated model, we have carried out numerical experiments from which we have concluded that groundwater is a major water resource for cotton growth in this region. The capillary rise from groundwater contributes almost 23% of crop transpiration when the average groundwater depth is 1.84 m, which is the most suitable groundwater depth for this experimental site. We have concluded that cotton growth and various components of the soil water balance are highly sensitive to the groundwater table level. Different positions of the groundwater table showed both positive and negative effects on cotton growth. Likewise, cotton growth has a significant impact on the capillary rise from groundwater. As a result, groundwater is a crucial factor that needs to be considered when evaluating agricultural land management in this arid region. The updated Hydrus-1D model developed in this study provides a powerful modeling tool for evaluating the effects of the groundwater table on local land management.

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Effects of salinity and fertigation practice on cotton yield and 15N recovery

Cited by 55 publications

References 43 publications

Evaluation of mulched drip irrigation for cotton in arid Northwest China

Evaluation of mulched drip irrigation for cotton in arid Northwest China

Evaluating the Effects of Mulch and Irrigation Amount on Soil Water Distribution and Root Zone Water Balance Using HYDRUS-2D

Evaluating the impact of groundwater on cotton growth and root zone water balance using Hydrus-1D coupled with a crop growth model

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