scholarly journals Effect of deficit irrigation on yield and quality of pear (Pyrus communis cv. Triumph of Vienna)

2017 ◽  
Vol 35 (3) ◽  
pp. 350-356 ◽  
Author(s):  
Adriana Carolina Moreno-Hernández ◽  
Javier Enrique Vélez-Sánchez ◽  
Diego Sebastiano Intrigliolo
Keyword(s):  
Deficit Irrigation ◽  
Growth Stage ◽  
Pyrus Communis ◽  
Fruit Growth ◽  
Stem Water Potential ◽  
Regulated Deficit Irrigation ◽  
Yield And Quality ◽  
Volume Curve ◽  
Pressure Volume Curve

Crop demands for irrigation require different technologies to optimize the use of water. Regulated Deficit Irrigation (RDI) is a strategy that enables a significant reduction of water application without affecting the crop yield and quality, with the advantage of being a tool for control of vegetative growth. The present study was conducted in Sesquile, Cundinamarca (Colombia) between 2015 and 2016. The objective was to evaluate the quality and development of pear crop (Pyrus communis L. cv. Triumph of Vienna) on field conditions, using three treatments of 100%, and 25% of water requirement (ETc) and no irrigation, applied at the rapid fruit growth stage. The mid day stem water potential, plant water relations, pressure-volume curve, fruit yield and quality were evaluated. There were no significant differences in the yield and quality of the fruits among the different irrigation treatments. The trees had the mechanisms of osmotic adjustment, which allowed water stressed trees to cope with irrigation restrictions during the rapid fruit growth stage without affecting the yield.

scholarly journals Soil and Regulated Deficit Irrigation Affect Growth, Yield and Quality of ‘Nero d’Avola’ Grapes in a Semi-Arid Environment

Plants ◽  
2021 ◽  
Vol 10 (4) ◽  
pp. 641
Author(s):  
Maria Gabriella Barbagallo ◽  
Giuseppe Vesco ◽  
Rosario Di Lorenzo ◽  
Riccardo Lo Bianco ◽  
Antonino Pisciotta
Keyword(s):  
Vegetative Growth ◽  
Deficit Irrigation ◽  
Water Status ◽  
Irrigation Management ◽  
Growth Yield ◽  
Wine Quality ◽  
Regulated Deficit Irrigation ◽  
Total N ◽  
Yield And Quality

The present work studied the effect of two consecutive years of regulated deficit irrigation (RDI) compared to rain fed management on the vegetative growth, yield, and quality of ‘Nero d’Avola’ grapes. The trial was conducted separately in two soils (vertisol and entisol) located at the top and bottom hillside of the same vineyard. Vertisol was characterized by greater depth, organic matter, exchangeable K2O, and total N than entisol. RDI was based on an irrigation volume at 25% of estimated crop evapotranspiration (ETc) up to end of veraison and 10% of estimated ETc up to 15 days before harvest. Predawn water potential (PDWP) was used as indicator of plant water status and irrigation timing. No difference in irrigation management was evident between vertisol and entisol. Under Mediterranean climate conditions, RDI was able to enhance grape yield and vegetative growth, especially in vertisol, but it reduced berry titratable acidity and total anthocyanins. ‘Nero d’Avola’ showed to adapt to drought conditions in the open field. Both soil type and irrigation regimes may provide opportunities to obtain different ‘Nero d’Avola’ wine quality and boost typicality.

scholarly journals Effect of regulated deficit irrigation (RDI) on the vegetative growth of pear variety Triunfo de Viena (Pyrus communis L.)

2021 ◽  
Vol 24 (2) ◽  
Author(s):  
Javier Enrique Vélez-Sánchez ◽  
María Jaqueline Molina-Ochoa ◽  
Pedro Rodríguez-Hernández
Keyword(s):  
Vegetative Growth ◽  
Deficit Irrigation ◽  
Dry Mass ◽  
Pyrus Communis ◽  
Fruit Growth ◽  
Regulated Deficit Irrigation ◽  
Relative Growth ◽  
Relative Growth Rates ◽  
Significant Difference ◽  
Pyrus Communis L

One of the consequences of a water deficit in the vegetative growth is the modification of the plant vigor, which determines the extent and the rate of growth and lengthening in shoots, which, in this phase, is more important than fruit growth, which is very slow in terms of dry mass accumulation. The objective of this research was to determine the effect on the vegetative growth of the pear variety Triunfo de Viena (Pyrus communis L) of regulated deficit irrigation (RDI), which was compared with a control irrigated at 100% crop evapotranspiration (ETc). The irrigation treatments consisted of the application of watering regimes of 74 and 48% ETc in treatment T2 and 60 and 27% ETc in treatment T3 in 2014 and 2015, respectively, during the period of rapid fruit growth with the same watering regime used in T1 (control) applied during the rest of the season. The irrigation reduction used in T2 and T3 represented water savings of 26% and 40% in 2014 and 52% and 73% in 2015, respectively. In the deficit treatments, there were no significant differences with respect to the control for the length, or absolute and relative growth rates (AGR and RGR) of the shoots. The weight of the wood from the fructification pruning had a significant difference between T3 and the control.

scholarly journals A Plant-based Approach to Deficit Irrigation in Trees and Vines

HortScience ◽  
2011 ◽  
Vol 46 (2) ◽  
pp. 173-177 ◽  
Author(s):  
Ken Shackel
Keyword(s):  
Water Potential ◽  
Vegetative Growth ◽  
Deficit Irrigation ◽  
Field Experiments ◽  
Physiological Activity ◽  
Fruit Growth ◽  
Soluble Solids ◽  
Stem Water Potential ◽  
Regulated Deficit Irrigation ◽  
Plant Level

Field experiments have been performed on grapevine as well as a number of woody tree species (almond, prune, pear, cherry) to determine the relation of plant water potential to a number of indices of plant physiological activity (leaf conductance, vegetative growth, and fruit growth and composition). Horticultural benefits of regulated deficit irrigation (RDI) have been documented in several crops (grapevine, almond, prune, cherries), but management of irrigation to achieve these benefits is difficult without a reliable plant-based measure of stress. Midday stem water potential (SWP) has proven to be a robust, reliable, and practical measure of stress and closely related to physiological responses at the leaf and whole plant level [stomatal conductance (gS), vegetative growth, and fruit growth and composition such as soluble solids and fruit color].

scholarly journals Effects of regulated deficit irrigation on physiology, yield and fruit quality in apricot trees under Mediterranean conditions

2016 ◽  
Vol 14 (4) ◽  
pp. e1205 ◽  
Author(s):  
Francisco Pérez-Sarmiento ◽  
José M. Mirás-Avalos ◽  
Rosalía Alcobendas ◽  
Juan J. Alarcón ◽  
Oussama Mounzer ◽  
...  
Keyword(s):  
Fruit Quality ◽  
Deficit Irrigation ◽  
Irrigation Management ◽  
Fruit Growth ◽  
Soluble Solids ◽  
Arid Environments ◽  
Stem Water Potential ◽  
Cross Sectional ◽  
Regulated Deficit Irrigation ◽  
Semi Arid

Scarce water resources mainly in arid and semi-arid areas have caused an increasing interest for applying irrigation protocols aiming to reduce water spends. The effects of regulated deficit irrigation (RDI) on the performance of apricot trees (Prunus armeniaca L. cv. “Búlida”) were assessed in Murcia (SE Spain), during three consecutive growing seasons (2008-2010). The hypothesis was that RDI would not restrict yield but increase fruit quality while saving water. Two irrigation treatments were established: i) control, irrigated to fully satisfy crop water requirements (100% ETc) and ii) RDI, that reduced the amount of applied water to: a) 40% of ETc at flowering and stage I of fruit growth; b) 60% of ETc during the stage II of fruit growth and c) 50% and 25% of ETc during the late postharvest period (from 60 days after harvest). Stem water potential, gas exchanges, trunk cross-sectional area (TCSA), fruit diameter, yield and fruit quality traits were determined. Vegetative growth was decreased by the use of RDI (12% less TCSA on average for the three years), whereas yield was unaffected. In addition, some qualitative characteristics of the fruits, such as the level of soluble solids, sweetness/acidity relation and fruit colour, were improved by the use of RDI. These results and average water savings of approximately 30%, lead us to conclude that RDI strategies are a possible solution for irrigation management in areas with water shortages, such as arid and semi-arid environments.

scholarly journals Effects of Regulated Deficit Irrigation On Yield and Quality of Isatis Indigotica in a Cold and Arid Environment

2021 ◽  
Author(s):  
Yucai Wang ◽  
Hengjia Zhang ◽  
Fuqiang Li ◽  
Rang Xiao ◽  
Haoliang Deng ◽  
...  
Keyword(s):  
Root Growth ◽  
Net Photosynthetic Rate ◽  
Water Deficit ◽  
Water Use ◽  
Photosynthetic Rate ◽  
Deficit Irrigation ◽  
Growth Stage ◽  
Isatis Indigotica ◽  
Regulated Deficit Irrigation

Abstract Field experiments were conducted to study the effects of regulated deficit irrigation on net photosynthetic rate, yield, water use and quality of Isatis indigotica under mulched drip irrigation in Hexi oasis region, which can theoretically guide researches on efficient water saving of Isatis indigotica planting. In 2016 and 2017, the experiments of regulated deficit irrigation of Isatis indigotica were carried out at Yimin Irrigation Experimental Station, Minle County, of Gansu Province, China. Except for sufficient irrigation at seedling and maturity of fleshy roots, Isatis indigotica in vegetative stage and fleshy root growth stage were subjected to mild, moderate and severe water deficit respectively, and their photosynthetic physiological indexes, yield and water use were measured. The results showed that the moderate and severe water deficits in vegetative and fleshy root growth stage significantly decreased the net photosynthetic rate and the amounts of dry matter accumulation of Isatis indigotica leaves (P<0.05), and with the increase of water deficit degree, the decrease of the net photosynthetic rate was greater; while the difference between mild water deficit and control group was not significant (P>0.05). The yield and water use efficiency of Isatis indigotica subjected to mild water deficit in vegetative and fleshy root growth stage marked the highest, reaching 8,239.56 kg/hm2 and 8,390.80 kg/hm2, 24.11 kg/hm2 and 23.62 kg/hm2·mm, respectively; other water deficit treatments were reduced, which was significantly different from the control group (P<0.05). Mild and moderate water deficit could increase the content of effective components ((R, S) - Goitrin, indirubin and indigo), and improve the quality of Isatis indigotica, but severe water deficit was not conducive to the accumulation of effective components. Therefore, the optimal water regulation treatment of Isatis indigotica is the mild water regulation deficit in vegetative and fleshy root growth stage, which can reduce the water consumption of Isatis indigotica and effectively improve the quality and its water use efficiency without reducing its yield.

scholarly journals Volatile, Sensory and Functional Properties of HydroSOS Pistachios

Foods ◽  
2020 ◽  
Vol 9 (2) ◽  
pp. 158 ◽  
Author(s):  
Luis Noguera-Artiaga ◽  
Paola Sánchez-Bravo ◽  
David Pérez-López ◽  
Antoni Szumny ◽  
Ángel Calin-Sánchez ◽  
...  
Keyword(s):  
Functional Properties ◽  
Sensory Properties ◽  
Morphological Properties ◽  
World Population ◽  
Stem Water Potential ◽  
Regulated Deficit Irrigation ◽  
Total Polyphenol ◽  
Highest Weight ◽  
Stem Water

Climate change, the increase in world population, and the intensification of urban and industrial activities, will cause a shortage of water for agriculture. This situation requires conscientious studies to manage water deficits without affecting the quality of the crops. In this study, regulated deficit irrigation (RDI) strategies and three rootstocks (P. atlantica, P. integerrima, and P. terebinthus) were applied to pistachio cultivation to study the quality of fruits obtained based on the morphological, functional, aroma, and their sensory properties. The results obtained demonstrated that RDI T1 (during phenological phase II of cultivation the stem water potential was maintained around −1.5 MPa) led to pistachios with same morphological properties, total polyphenol content, antioxidant activity, volatile composition, sensory properties, better profile of fatty acids, and being the favorite ones for international consumers, as compared to pistachios obtained under full irrigation treatments. On the other hand, when P. integerrima was used, pistachios obtained had the highest weight, the lowest content of sucrose and the best functional properties.

scholarly journals YIELD AND QUALITY OF WINTER CULTIVARS OF PYRUS COMMUNIS L. UNDER CONDITIONS OF THE CRIMEA

2019 ◽  
pp. 93-101
Author(s):  
A.I. Sotnik ◽  
◽  
R.D. Babina ◽  
P.G. Khoruzhiy ◽  
L.Yu. Grishanova ◽  
...  
Keyword(s):  
Pyrus Communis ◽  
Yield And Quality ◽  
Pyrus Communis L ◽  
The Crimea

scholarly journals Deficit Irrigation in Vitis labruscana Bailey ‘Concord’ in Central Washington

HortScience ◽  
2017 ◽  
Vol 52 (3) ◽  
pp. 450-456 ◽  
Author(s):  
Jason E. Stout ◽  
Joan R. Davenport ◽  
R. Troy Peters
Keyword(s):  
Fruit Quality ◽  
Water Availability ◽  
Deficit Irrigation ◽  
Control Treatment ◽  
Commercial Practice ◽  
Yield And Quality ◽  
Vitis Labruscana ◽  
New Strategy ◽  
Sudden Decrease

Drought conditions in the western United States have limited water availability for the irrigation of agricultural products. This can have a dramatic impact on yield and quality of specialty perennial crops, such as juice grapes (Vitis labruscana Bailey). Washington State juice grape industry typically irrigates to 100% of crop-specific evapotranspiration (ETc) throughout the season to minimize yield loss. However, as conditions have limited water availability, growers need a new strategy to cope with the limited water supply. Regulated deficit irrigation (RDI) applies less water than plant ETc and has been shown to improve fruit quality in red wine grapes (Vitis vinifera). The objectives of this study were to evaluate the effects of RDI treatments on the yield and quality of ‘Concord’ juice grapes as compared with current commercial practice. The treatments reduced the amount of water applied between bloom and veraison by 25% (−25%), 33% (−33%), and 45% (−45%) from the control application. The results of this 4-year study initially indicated a dramatic decrease in yield in the −45% treatment (7.5 Mg/ha) as compared with the control treatment (19.2 Mg/ha); however, yield for the RDI treatments recovered in the subsequent seasons and was not statically different from the control. There were no statistical differences in fruit quality between treatments. This indicates that RDI has the potential to decrease water applied between bloom and veraison without impacting fruit quality; however, to avoid a sudden decrease in yield, it would be necessary to gradually reduce water applications over several years.

Influence of regulated deficit irrigation and rootstock on the functional, nutritional and sensory quality of pistachio nuts

2020 ◽  
Vol 261 ◽  
pp. 108994 ◽  
Author(s):  
Luis Noguera-Artiaga ◽  
Paola Sánchez-Bravo ◽  
Francisca Hernández ◽  
Armando Burgos-Hernández ◽  
David Pérez-López ◽  
...  
Keyword(s):  
Deficit Irrigation ◽  
Sensory Quality ◽  
Regulated Deficit Irrigation ◽  
Pistachio Nuts
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