Effects of irrigation thresholds and temporal distribution on potato yield and water productivity in sandy soil

Matteau, Jean-Pascal; Celicourt, Paul; Létourneau, Guillaume; Gumiere, Thiago

doi:10.1016/j.agwat.2022.107483

Cited by 8 publications

(6 citation statements)

References 39 publications

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“…The drought conditions caused by the SMPT of -30 kPa and -45 kPa may have prevented an adequate development of the root system, further preventing an optimal tubers development and distribution. Potato yield decreases have already been observed in drought conditions or under excessively dry SMPT (17,35,48).…”

Section: Discussionmentioning

confidence: 99%

“…The equivalent soil water and air contents corresponding to each SMPT are shown in Table 1. These values were selected based on prior experimental results, which demonstrated that SMPT values between -10 and -24 kPa were optimal to maximize potato yield while values lower than -7 kPa or higher than -45 kPa both result in significant yield reduction (35). Of the 12 experimental units, only 9 have been used for analysis because two experimental units had missing images in the stack, preventing the analysis.…”

Section: Experimental Designmentioning

confidence: 99%

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Relationship Between Irrigation Thresholds and Potato Tuber Depth in Sandy Soil

et al. 2022

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Soil disturbance resulting from tuber crop harvesting is a major threat to soil health. The depth of soil intervention is a critical factor that further strengthens the effects of such disturbance and makes harvest one of the most harmful cropping operations. In the case of potato, soil moisture is a determining factor for root and stolon development, hence, a deeper soil intervention may be required at harvest. While potato ranks as the fourth most cultivated crop worldwide, the impact of soil moisture on potato tuber vertical and horizontal distribution has received very little attention. The objective of this study was to evaluate the effects of four soil matric potential thresholds (SMPTs; –10, –20, –30, and –45 kPa) on the spatial (vertical and horizontal) distribution of potato tubers grown in plastic containers filled with sandy soil using an X-ray computed tomography scanner. The results of the experiments conducted in a greenhouse environment suggest that the horizontal distribution of the tubers did not differ significantly across the irrigation treatments. However, a linear relationship between SMPT, and therefore irrigation threshold, and potato tuber depth was observed. In addition, the deepest tuber position was observed under the –10 kPa SMPT, while the tubers were closer to the soil surface under the –45 kPa SMPT, which could lead to a greater preponderance of tuber diseases such as late blight or greening. Thus, potato irrigation events implementing a SMPT between –20 and –30 kPa could reduce the harvest depth, hence, decreasing the negative impacts of soil disturbance on soil structural stability and soil organic carbon degradation while mitigating the impacts of disease as well as reducing fuel costs, greenhouse gas emissions, soil loss and erosion.

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Section: Discussionmentioning

confidence: 99%

Section: Experimental Designmentioning

confidence: 99%

Relationship Between Irrigation Thresholds and Potato Tuber Depth in Sandy Soil

et al. 2022

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“…These practices vary from water table management to microirrigation (subsurface drip and sprinkler irrigation). For example, for a potato crop under drip irrigation in sandy loam soil, optimal irrigation scheduling is recommended to occur at soil matric potential (

ψ_{m}

) thresholds between −10 and −24 kPa (Jacques et al, 2020; Matteau et al, 2021a,b; Matteau, Célicourt, Létourneau, et al, 2022; Matteau, Celicourt, Shahriarina, et al, 2022; Table 1). Such an approach increased crop yield and water productivity while reducing irrigation water use.…”

Section: Quebec's Irrigation Statusmentioning

confidence: 99%

Potential of implementing irrigation in rainfed agriculture in Quebec: A review of climate change‐induced challenges and adaptation strategies

Nand

2023

Irrigation and Drainage

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Leading to growing‐season water stress, eastern Canada's evolving climate has disrupted the region's rainfed farming systems. Accordingly, this review was conducted to assess the status of irrigation, climate‐induced challenges and opportunities and the impact of adaptation strategies on economic returns and the environment in Quebec's agricultural regions. While irrigation is limited mainly to high‐value crops, controlled drainage with sub‐irrigation (CDSI) has been implemented at a limited number of field sites. Given the greater rainfall variability and rising number of growing‐season heatwave events anticipated, previous studies have mainly focused on developing climate change adaptation practices. The present study identified two research gaps: (i) a lack of analyses of drought frequency and its effect on root zone soil moisture, crop ET, crop phenology and agricultural production at a regional scale under historical and future climates and (ii) a lack of regional‐scale studies addressing climate change adaptation options, including supplementary irrigation, and their potential effects on economic return and water resources under a changing climate. Additional studies must address these gaps for the development of climate change adaptation practices to secure food demand and water sustainability.

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“…Previous studies on potato cropping systems mainly focused on the independent effect of soil-based irrigation [ 15 ] and partial manure substitution [ 16 , 17 , 18 ]. Given their independent positive effects on tuber yield, plant growth and resource use efficiency, we hypothesize that their combined effects would simultaneously benefit potato production, tuber quality, water and N use efficiency, and economic return.…”

Section: Introductionmentioning

confidence: 99%

Synergistic Effects of Soil-Based Irrigation and Manure Substitution for Partial Chemical Fertilizer on Potato Productivity and Profitability in Semiarid Northern China

Jiang,

et al. 2024

Plants

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Soil-based irrigation and the partial substitution of chemical fertilizers with manure are promising practices to improve water and nitrogen (N) use efficiency. We hypothesize that their combination would simultaneously benefit potato production, tuber quality and profitability. A two-year experiment was conducted in semiarid northern China to investigate the combined effects of three water treatments [rainfed (W0), soil-based irrigation (W1), conventional irrigation (W2)] and three N treatments [no N (N0), chemical N (N1), 25% manure substitution (N2)] on these indicators, and to perform a comprehensive evaluation and correlation analysis. The results showed that water and N treatments separately affected all indicators except vitamin C content. Compared to W2, W1 significantly increased water productivity by 12% and irrigation water use efficiency (IWUE) by 30% due to 10% lower evapotranspiration and 21% lower water use. However, W1 and W2 negatively affected crude protein content. Conversely, this was compensated by the combination with N1 and N2. There were slight differences between N1 and N2 for all indicators on average across water treatments, while under W1, N2 significantly increased leaf area index (LAI) and N recovery efficiency (REN) by 18% and 29.4%, respectively, over N1. Also, comprehensive evaluations showed that W1N2 performed best, with the highest tuber yield, profit and acceptable quality. This can be explained by the increase in LAI, IWUE and REN due to the positive correlations with tuber yield and net return. Consequently, soil-based irrigation combined with 25% manure substitution had complementary effects on tuber quality and synergistic effects on potato productivity and profitability.

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Effects of irrigation thresholds and temporal distribution on potato yield and water productivity in sandy soil

Cited by 8 publications

References 39 publications

Relationship Between Irrigation Thresholds and Potato Tuber Depth in Sandy Soil

Relationship Between Irrigation Thresholds and Potato Tuber Depth in Sandy Soil

Potential of implementing irrigation in rainfed agriculture in Quebec: A review of climate change‐induced challenges and adaptation strategies

Synergistic Effects of Soil-Based Irrigation and Manure Substitution for Partial Chemical Fertilizer on Potato Productivity and Profitability in Semiarid Northern China

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