Influence of Irrigation Scheduling Using Thermometry on Peach Tree Water Status and Yield under Different Irrigation Systems

Zhang, Huihui; Wang, Dong; Gartung, Jim

doi:10.3390/agronomy7010012

Cited by 13 publications

(6 citation statements)

References 28 publications

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“…In all years studied, the differences between the yields of the irrigated peach trees and the yields of the non-irrigated ones were statistically very significant. Obtained contents are similar to those from previous studies (Chalmers et al, 1981;Zhang et al, 2017).…”

supporting

confidence: 78%

The Bases of Peach Tree Irrigation in the Fruit-Growing Basin from Oradea, Romania, and the Use of the Microsprinkler System

Domuța

Gîtea

Borza

et al. 2018

Not Bot Horti Agrobo

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The paper presents the results obtained on preluvo-soil in Sâniob, Oradea, during 2007Oradea, during -2015. In order to maintain the soil water content between easily available water content and field capacity, the irrigation rate used was between 60 mm/ha and 470 mm/ha. Irrigation determined an increase of the total water consumption by 53% (712 mm/ha vs. 466 mm/ha). For the non-irrigated variant (71%) and for the irrigated one (46%), the rainfalls registered between 15 March-1 October yearly represented the main source of supplying the total water consumption, while irrigation supplied 40% of the total water consumption (with a variation range 11%-61%). The microsprinkler irrigation system led to a 30.6% yield gain, with a variation range of 15.8%-58.7%. It also determined a higher size index in comparison with the non-irrigated variant and a smaller percentage of kernels. All differences were statistically very significant. Several correlations were quantified in the soilwater-plant-atmosphere system. The parameters of the system were: pedological drought, strong pedological drought and water consumption. All correlations were statistically very significant; the best mathematical expression was the polynomial function. Four methods (Penman Monteith, Pan, Piche and Thornthwaite evaporimeter methods) were studied to determine the reference evapotranspiration (ETo) in comparison with the optimal water consumption of the peach tree. As it was cheaper and easier to use, the Pan evaporation method was recommended in the irrigation scheduling, although the Penman Monteith method could have given more accurate results in assessing the optimal water consumption.

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supporting

confidence: 78%

The Bases of Peach Tree Irrigation in the Fruit-Growing Basin from Oradea, Romania, and the Use of the Microsprinkler System

Domuța

Gîtea

Borza

et al. 2018

Not Bot Horti Agrobo

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“…The following thermal-based indexes were calculated throughout the experiment: Tc − Ta: the difference between the canopy and the surrounding air temperature. CWSI (Crop Water Stress Index): calculated empirically according to the equation described by Idso et al [ 11 ]:

where, (Tc − Ta)LL and (Tc − Ta)UL correspond to the lower and upper limit, respectively. The lower limit (LL) was calculated for a given vapor pressure deficit (VPD), from the Non-Water Stressed Baseline (NWSB), which is equivalent to a canopy transpiring at the potential rate (fully irrigated trees with fully open stomata).…”

Section: Methodsmentioning

confidence: 99%

“…CWSI (Crop Water Stress Index): calculated empirically according to the equation described by Idso et al [ 11 ]:…”

Section: Methodsmentioning

confidence: 99%

“…The main advantage of using Tc compared to other traditional plant-based water status indicators such as midday stem water potential (Ψ stem ) or g s , is its real-time monitoring capacity together with its reliability [ 10 ]. However, Tc does not only depend on the stomatal aperture but also on other agrometeorological variables such as solar incidence angle, solar radiation, air temperature (Ta) and wind speed [ 11 ]. For this reason, the canopy-to-air temperature difference (Tc − Ta, Idso et al [ 12 ]), and the crop water stress index (CWSI, Jackson et al [ 13 ]) have been developed to minimize the effects of environmental variables on the absolute Tc values.…”

Section: Introductionmentioning

confidence: 99%

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Impact of a DANA Event on the Thermal Response of Nectarine Trees

Conesa

Conejero

Vera

et al. 2023

Plants

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This field experiment focuses on the effects of a heavy rainfall event (DANA, depresión aislada en niveles altos) that occurred on 12–14 September 2019 (DOY, Day of the year, 255–257), in southern Spain on plant water status and the thermal response of nectarine trees. Two irrigation treatments were applied during the summer–autumn postharvest period (DOY 158–329): full-irrigated (CTL) and non-irrigated (DRY). Volumetric soil water content (θv), air temperature (Ta) and canopy temperature (Tc) were monitored in real-time and the crop water stress index (CWSI) was calculated. The difference in Tc between the DRY and CTL treatments (Tc’ − Tc) is proposed as a new thermal indicator. Stem water potential (Ψstem) and leaf gas exchange measurements were recorded on representative days. During the DANA event, only the Tc measured by the infrared radiometer sensors could be monitored. Therefore, the effects of the DANA forced the soil water content sensors to be switched off, which prevented Ψstem and leaf gas exchange determinations from DOY 255 to 275. Before the DANA event, withholding irrigation caused a gradual decrease in the soil and plant water status in the DRY treatment. Significant differences appeared between treatments in the studied thermal indexes. Moreover, Tc’ − Tc was more sensitive than Tc − Ta in assessing nectarine water stress. The effects of the DANA reduced these differences, suggesting different baselines for the calculation of CWSI. In this respect, the relationship Tc − Ta vs. VPD improved the coefficient of determination after the DANA event in full-irrigated trees. Similar values of Ψstem and leaf gas exchange were found in both treatments after the DANA event, even though thermal indexes showed some significant differences. In addition, the strong relationship found between Tc − Ta and CWSI vs. Ψstem worsened after DANA occurred, revealing a lower sensitivity of Ψstem compared to canopy temperature to accurately assess nectarine water status in these saturated soil conditions. This research underlined the robustness of infrared thermography to continuously monitor plant water status under these extreme weather conditions.

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“…Studies addressing the effect of deficit irrigation on peach fruit quality either refer to an improvement of it [71] or no effect [134,136]. Pérez-Sarmiento et al [138] applying several RDI strategies to apricot have found improvements in some qualitative characteristics of the fruits, such as the level of soluble solids, sugar/ acid ratio, and fruit color, without negative effects in yield.…”

Section: Effect On Fruits Qualitymentioning

confidence: 99%

Deficit Irrigation in Mediterranean Fruit Trees and Grapevines: Water Stress Indicators and Crop Responses

Fernandes-Silva¹,

Oliveira²,

Paço³

et al. 2019

Irrigation in Agroecosystems

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In regions with Mediterranean climate, water is the major environmental resource that limits growth and production of plants, experiencing a long period of water scarcity during summer. Despite the fact that most plants developed morphological, anatomical, physiological, and biochemical mechanisms that allow to cope with such environments, these harsh summer conditions reduce growth, yield, and fruit quality. Irrigation is implemented to overcome such effects. Conditions of mild water deficit imposed by deficit irrigation strategies, with minimal effects on yield, are particularly suitable for such regions. Efficient irrigation strategies and scheduling techniques require the quantification of crop water requirements but also the identification of pertinent water stress indicators and their threshold. This chapter reviews the scientific information about deficit irrigation recommendations and thresholds concerning water stress indicators on peach trees, olive trees, and grapevines, as case studies.

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Influence of Irrigation Scheduling Using Thermometry on Peach Tree Water Status and Yield under Different Irrigation Systems

Cited by 13 publications

References 28 publications

The Bases of Peach Tree Irrigation in the Fruit-Growing Basin from Oradea, Romania, and the Use of the Microsprinkler System

The Bases of Peach Tree Irrigation in the Fruit-Growing Basin from Oradea, Romania, and the Use of the Microsprinkler System

Impact of a DANA Event on the Thermal Response of Nectarine Trees

Deficit Irrigation in Mediterranean Fruit Trees and Grapevines: Water Stress Indicators and Crop Responses

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