Long-term physiological and agronomic responses of mandarin trees to irrigation with saline reclaimed water

Nicolás, Emilio; Alarcón, J.J.; Mounzer, O.; Pedrero, F.; Tortosa, Pedro Antonio Nortes; Alcobendas, Rosalía; Trigueros, Cristina Romero; Jm, Bayona; Valero, José Francisco Maestre

doi:10.1016/j.agwat.2015.11.017

Cited by 88 publications

(68 citation statements)

References 28 publications

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“…Stem water potential (Ψ s ) was not influenced by salinity from RW in any of the crops (Figure 2), in agreement with the results found by Nicolás et al (2016) for mandarin trees. Nevertheless, plant-water relations are proven to be affected by water quality (Paranychianakis et al, 2004).…”

Section: Plant Water Statussupporting

confidence: 89%

“…The experiment was conducted in 2015 in a commercial Citrus orchard, located at the northeast of the Region of Murcia in Campotéjar (38º07'18"N, 1°13'15"'W, 132 m above sea level) with a BSk climate by Köppen-Geiger classification (Peel et al, 2007 (Allen et al, 1998), by a monthly local crop coefficient according to Pedrero et al (2015) for grapefruit and Nicolás et al (2016) for mandarin.…”

Section: Site Description and Irrigation Treatmentsmentioning

confidence: 99%

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Effects of saline reclaimed waters and deficit irrigation on Citrus physiology assessed by UAV remote sensing

Trigueros

Tortosa

Alarcón

et al. 2017

Agricultural Water Management

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• Reclaimed water significantly reduced total chlorophyll in grapefruit and mandarin leaves. • Normalized Difference Vegetation Index (NDVI) was related to gas exchange variations. • Near infrared (NIR) and red (R) domains were the best spectral indicators for both species. • Usefulness of remote sensing for assessing diurnal changes in Citrus physiology was confirmed. Effects of saline reclaimed waters and deficit irrigation on Citrus physiology assessed by UAV remote sensing.

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Section: Plant Water Statussupporting

confidence: 89%

Section: Site Description and Irrigation Treatmentsmentioning

confidence: 99%

Effects of saline reclaimed waters and deficit irrigation on Citrus physiology assessed by UAV remote sensing

Trigueros

Tortosa

Alarcón

et al. 2017

Agricultural Water Management

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“…However, brackish water irrigation also carries the risk of causing soil salinization and affecting the normal growth of crops. Nicolás et al argued that irrigating with saline reclaimed water will affect crop yield and quality, so it is necessary to find a reasonable irrigation and soil management strategy when using brackish water [8]. Selim et al proved that the salinity at the soil surface increased as inter-plant emitter distances and emitter depth increased [9].…”

Section: Introductionmentioning

confidence: 99%

Effects of Irrigating with Brackish Water on Soil Moisture, Soil Salinity, and the Agronomic Response of Winter Wheat in the Yellow River Delta

Wang

Pang

2019

Sustainability

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Water shortages due to low precipitation and seawater intrusion in the Lower China Yellow River Delta have occurred in recent years. Exploiting underground brackish water through well drilling is a potential alternative way to satisfy the demand for agricultural irrigation. However, how to successfully use brackish water for irrigation has become a new problem to solve. A two-year field experiment was conducted in this typical saline-alkaline region to investigate the effects of irrigating with brackish water on the soil water-salt dynamics, and the physiological response of winter wheat to drought-salt stress. The experiment was laid out in a randomized block design with three replications according to the quantity (160 mm and 240 mm) and quality (fresh water and brackish water with a salt concentration of 3 g L-1) of irrigation water: T1 was 240 mm of fresh water, T2 was 160 mm of fresh water, T3 was 80 mm of fresh water and 160 mm of brackish water, and T4 was 80 mm of fresh water and 80 mm of brackish water. The results showed that the soil moisture of T3 was almost the same as T1 after the harvest of winter wheat each year, therefore, irrigating with brackish water can maintain soil moisture while saving fresh water resources. After two years, the soil salinity of each treatment increased by 0.307, 0.406, 0.383, and 0.889 g kg-1, respectively. During the jointing-flowering stage, salt stress has a significant inhibitory effect on photosynthesis; T3 and T4 were lower than T1 and T2 in terms of plant height and dry weight. During the filling stage, because the effect of drought stress is more serious than that of salt stress, the photosynthesis of T3 was greater than that of T2 and T4. For both years, the yield of crops followed the rank order T1 > T3 > T2 > T4. Compared with irrigating with fresh water in T1, T3 changed the second and third irrigation into brackish water, however we did not find that soil salinity increased significantly, and this treatment was able to ensure crop growth during the filling stage. Therefore, the combination of fresh water (80 mm), then brackish water (80 mm), then brackish water (80 mm) is a feasible irrigation strategy in China's Yellow River Delta for winter wheat.

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“…Another issue to consider when using IA is the fact that salinity (or electrical conductivity) of irrigation water must be evaluated periodically for an adequate LF determination. This is particularly relevant in regions such as Southeast Spain where irrigation water comes from different sources (wells, desalination plants, treated wastewater, irrigator communities) and, consequently, presents contrasting qualities [64,65], which might be reduced if water from different sources is mixed prior to be used for irrigation.…”

Section: Model Evaluation: Advantages Main Sources Of Error and Limimentioning

confidence: 99%

Irrigation-Advisor—A Decision Support System for Irrigation of Vegetable Crops

Mirás-Avalos

Rubio-Asensio

Ramírez-Cuesta

et al. 2019

Water

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Climate change will intensify water scarcity, and therefore irrigation must be adapted to save water. Operational tools that provide watering recommendations to end-users are needed. This work presents a new tool, Irrigation-Advisor (IA), which is based on weather forecasts and is able to separately determine soil evaporation and crop transpiration, and thus is adaptable to a broad range of agricultural situations. By calculating several statistical indicators, IA was tested against the FAO-56 crop evapotranspiration (ETcFAO) methodology using local crop coefficients. Additionally, IA recommendations were compared with current standard practices by experienced farmers (F). Six field experiments with four widely cultivated species (endive, lettuce, muskmelon and potato) were performed in Southeast Spain. Irrigation water applied, crop yield, aboveground biomass and water productivity were determined. Crop water needs underestimations (5%–20%) were detected when comparing IA against ETcFAO, although the index of agreement proved reasonable adjustments. The IA recommendations led to water savings up to 13% when compared to F, except for lettuce, with a 31% surplus in irrigation when using IA. Crop yield was not compromised and water productivity was increased by IA. Therefore, IA mimicked the farmers′ irrigation strategies fairly well without deploying sensors on-site. Nevertheless, improvements are needed for increasing the accuracy of IA estimations.

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Long-term physiological and agronomic responses of mandarin trees to irrigation with saline reclaimed water

Cited by 88 publications

References 28 publications

Effects of saline reclaimed waters and deficit irrigation on Citrus physiology assessed by UAV remote sensing

Effects of saline reclaimed waters and deficit irrigation on Citrus physiology assessed by UAV remote sensing

Effects of Irrigating with Brackish Water on Soil Moisture, Soil Salinity, and the Agronomic Response of Winter Wheat in the Yellow River Delta

Irrigation-Advisor—A Decision Support System for Irrigation of Vegetable Crops

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