scholarly journals Comparative effects of regulated deficit irrigation (RDI) and partial root-zone drying (PRD) on growth and cell wall peroxidase activity in tomato fruits

2008 ◽  
Vol 117 (1) ◽  
pp. 15-20 ◽  
Author(s):  
Sladjana Savić ◽  
Radmila Stikić ◽  
Biljana Vucelić Radović ◽  
Biljana Bogičević ◽  
Zorica Jovanović ◽  
...  
Keyword(s):  
Cell Wall ◽  
Peroxidase Activity ◽  
Deficit Irrigation ◽  
Root Zone ◽  
Regulated Deficit Irrigation ◽  
Tomato Fruits

scholarly journals Physiological and Biochemical Responses of Orange Trees to Different Deficit Irrigation Regimes

Plants ◽  
2019 ◽  
Vol 8 (10) ◽  
pp. 423 ◽  
Author(s):  
Puglisi ◽  
Nicolosi ◽  
Vanella ◽  
Piero ◽  
Stagno ◽  
...  
Keyword(s):  
Deficit Irrigation ◽  
Crop Production ◽  
Root Zone ◽  
Irrigation Season ◽  
Regulated Deficit Irrigation ◽  
Resistivity Tomography ◽  
Micro Irrigation ◽  
Response To Water ◽  
Orange Trees ◽  
Physiological And Biochemical

The article presents the results of research consisting of the application of deficit irrigation (DI) criteria, combined with the adoption of micro-irrigation methods, on orange orchards (Citrus sinensis (L.) Osbeck) in Sicily (Italy) during the irrigation season of 2015. Regulated deficit irrigation (RDI, T3) and partial root-zone drying (PRD, T4) strategies were compared with full irrigation (T1) and sustained deficit irrigation (SDI, T2) treatments in terms of physiological, biochemical, and productive crop response. A geophysical survey (electrical resistivity tomography, ERT) was carried out to identify a link between the percentages of drying soil volume in T4 with leaves abscisic acid (ABA) signal. Results highlight that the orange trees physiological response to water stress conditions did not show particular differences among the different irrigation treatments, not inducing detrimental effects on crop production features. ABA levels in leaves were rather constant in all the treatments, except in T4 during late irrigation season. ERT technique identified that prolonged drying cycles during alternate PRD exposed more roots to severe soil drying, thus increasing leaf ABA accumulation.

scholarly journals The effects of drought on the expression of TAO1, NCED and EIL1 genes and ABA content in tomato wild-type and flacca mutant

2012 ◽  
Vol 64 (1) ◽  
pp. 297-306 ◽  
Author(s):  
Ana Milosavljevic ◽  
Ljiljana Prokic ◽  
Milena Marjanovic ◽  
Radmila Stikic ◽  
Aneta Sabovljevic
Keyword(s):  
Deficit Irrigation ◽  
Treatment Duration ◽  
Root Zone ◽  
Full Irrigation ◽  
Aba Signaling ◽  
Wild Type ◽  
Regulated Deficit Irrigation ◽  
Similar Expression Pattern ◽  
Effects Of Drought ◽  
Aba Content

The effects of drought (partial root-zone drying-PRD and regulated deficit irrigation-RDI) and full irrigation (FI) on the expression of ABA biosynthetic genes (TAO1 and NCED), EIL1 gene and ABA content in the leaves of tomato wild-type (WT) and flacca mutant were investigated. Results confirmed differences in the expression of the investigated genes under the investigated treatments, during treatment duration as well as between investigated WT and flacca plants. The most significant differences between WT and flacca were found under PRD treatment. The similar expression pattern of all genes in the WT plants could indicate synergistic signaling pathways for ABA and ethylene. In flacca, reduced NCED and significant EIL1 expression might reflect the increase in ethylene production, which could influence the ABA signaling and production that occurred under PRD. Drought also induced an increase in ABA content that is most expressed in flacca under RDI.

Partial root zone drying exerts different physiological responses on field-grown grapevine (Vitis vinifera cv. Monastrell) in comparison to regulated deficit irrigation

2014 ◽  
Vol 41 (11) ◽  
pp. 1087 ◽  
Author(s):  
Pascual Romero ◽  
Juan Gabriel Pérez-Pérez ◽  
Francisco M. del Amor ◽  
Adrián Martinez-Cutillas ◽  
Ian C. Dodd ◽  
...  
Keyword(s):  
Root Growth ◽  
Water Use ◽  
Deficit Irrigation ◽  
Fruit Set ◽  
Storage Capacity ◽  
Fine Root ◽  
Root Zone ◽  
Biomass Accumulation ◽  
Regulated Deficit Irrigation ◽  
Fine Root Growth

Regulated deficit irrigation (RDI) and partial root zone irrigation (PRI) were compared for 4 years at two irrigation volumes (110 mm year–1 (1) and 78 mm year–1 (2)) in field-grown grafted Monastrell grapevines (Vitis vitifera L.) to distinguish the effects of deficit irrigation from specific PRI effects. PRI-1 and RDI-1 vines received ~30% of the crop evapotranspiration (ETc) from budburst to fruit set, 13–15% from fruit set to veraison and 20% from veraison to harvest. RDI-2 and PRI-2 vines received around 20% of ETc from budburst to fruit set, no irrigation from fruit set to veraison, and recovery (21–24% ETc) thereafter. Compared with RDI-1, PRI-1 increased irrigation depth and total soil water (θv) availability in the root zone, and stimulated greater fine root growth and water uptake. Increased soil volume exploration supported greater canopy water use, vegetative development, biomass accumulation and internal water storage capacity. PRI-1 vines had higher stomatal conductance, lower leaf-level water use efficiency and increased leaf xylem sap concentration ([X-ABA]leaf) following reirrigation. Compared with RDI-2, PRI-2 decreased total θv availability, fine root growth and water uptake, gas exchange, leaf water status, [X-ABA]leaf, biomass accumulation and storage capacity. Xylem ABA decreased with total θv availability in PRI-2, probably from limited sap flow when θv in drying soil was low (≈20%). For this rootstock–scion combination, high irrigation volumes applied to the wet part of the roots (θv > 30%) are critical for increasing root-to-shoot ABA signalling and growth, and improving performance under semiarid conditions.

Yield and water productivity response of quinoa to various deficit irrigation regimes applied with surface and subsurface drip systems

2021 ◽  
pp. 1-12
Author(s):  
Y. Bozkurt Çolak ◽  
A. Yazar ◽  
A. Alghory ◽  
S. Tekin
Keyword(s):  
Deficit Irrigation ◽  
Mediterranean Region ◽  
Root Zone ◽  
Eastern Mediterranean ◽  
Water Productivity ◽  
Eastern Mediterranean Region ◽  
First Year ◽  
Regulated Deficit Irrigation ◽  
Significant Difference ◽  
Subsurface Drip

Abstract This study evaluated the yield and water productiivty response of quinoa to regulated deficit irrigation (RDI), partial root-zone drying (PRD) and conventional deficit irrigation (DI) and full irrigation (FI) using surface ( SD ) and subsurface drip ( SSD ) systems in 2016 and 2017 in the eastern Mediterranean region of Turkey. The treatments consisted of RDI, PRD50, DI50, DI75 and FI. A rainfed treatment (RF) was also included in the study. The experimental design was split plots with four replications. DI75 and DI50 received 75 and 50% of FI, respectively. PRD50 received 50% of FI, but from alternative laterals. RDI received 50% of FI during vegetative stage until flowering, and then received 100% of water requirement. The results showed that quinoa under SD used slightly more water than SSD due to reduced surface evaporation. RDI resulted in water saving of 23 and 21% for SD and SSD , respectively, compared to FI; and RDI produced statistically similar grain yields to FI. DI75 treatment resulted in water savings of 16% for both drip methods in the first year and 10 and 25% for SD and SSD systems, respectively, in the second year. PRD50 produced greater yield than DI50 eventhough they received the same amount of irrigation water. RF and PRD50 treatments resulted in significantly greater water productivity (WP) values than other treatments. There was no significant difference between SD and SSD regarding the grain and dry matter yields and WP values. Thus, RDI and DI75 appear to be good alternatives to FI for sustainable quinoa production in the Mediterranean region.

scholarly journals The Effect of Deficit Irrigation Strategies on the Efficiency From Plant to Essential Oil Production in Peppermint (Mentha piperita L.)

2021 ◽  
Vol 3 ◽  
Author(s):  
Ali Akbarzadeh ◽  
Ali Shahnazari
Keyword(s):  
Essential Oil ◽  
Deficit Irrigation ◽  
Root Zone ◽  
Water Productivity ◽  
Control Treatment ◽  
Mentha Piperita ◽  
Regulated Deficit Irrigation ◽  
Aerial Parts ◽  
Whole Plant ◽  
Essential Oil Yield

The effect of deficit irrigation on water productivity in the water supply and utilization chain has been computed, employing a systematic and quantitative approach. By applying such an investigation, weaknesses and strengths of deficit irrigation strategies could be revealed, and actions and measures could be implemented to improve water productivity as much as possible. The peppermint plants were subjected to regulated deficit irrigation (RDI) and partial root-zone drying (PRD). Peppermint was cultivated under full irrigation (FI, control) and RDI treatments including RDI85, RDI70, RDI55, and RDI40, receiving 85, 70, 55, and 40% of FI treatment, respectively; PRD techniques including PRD70, PRD55, and PRD40, receiving 70, 55, and 40% of FI treatment in one side of the root-zone at each irrigation event, respectively during two cutting seasons. There was no significant improvement in leaves weight and dried yield step by applying deficit irrigation treatments. Leaves and aerial parts from the whole plant and dried yield as the main source of essential oil had the weakest function, which should be optimized to adjust and gain more efficiency. In the essential oil yield step, as a final procedure, the highest improvements were observed in PRD55 treatment with 90% improvement in efficiency compared to control treatment. According to the results and calculating water productivity, PRD55 treatment improved water productivity by 179% compared to the control treatment. Two-way ANOVA analysis, between deficit volume and the deficit applying method, showed that total water productivity was affected (increased) significantly by the deficit applying method. This implies the contribution of the PRD technique to enhance more signals than RDI-based signals, which resulted in more improvements in secondary metabolism production in peppermint.

EFFECTS OF REGULATED DEFICIT IRRIGATION AND PARTIAL ROOT ZONE DRYING ON LATE HARVEST PEACH TREE PERFORMANCE

2002 ◽  
pp. 343-350 ◽  
Author(s):  
D.A. Goldhammer ◽  
M. Salinas ◽  
C. Crisosto ◽  
K.R. Day ◽  
M. Soler ◽  
...  
Keyword(s):  
Deficit Irrigation ◽  
Root Zone ◽  
Peach Tree ◽  
Regulated Deficit Irrigation ◽  
Tree Performance

scholarly journals Irrigation Protocols in Different Water Availability Scenarios for ‘Crimson Seedless’ Table Grapes under Mediterranean Semi-Arid Conditions

Water ◽  
2020 ◽  
Vol 13 (1) ◽  
pp. 22
Author(s):  
Abdelmalek Temnani ◽  
María R. Conesa ◽  
Manuel Ruiz ◽  
Juan A. López ◽  
Pablo Berríos ◽  
...  
Keyword(s):  
Deficit Irrigation ◽  
Root Zone ◽  
Maximum Temperature ◽  
Stem Water Potential ◽  
Regulated Deficit Irrigation ◽  
Table Grapes ◽  
Use Efficiency ◽  
Partial Root Drying ◽  
Gaussian Regression ◽  
Sustainable Irrigation

For three consecutive years (2015–2017), two deficit irrigation (DI) strategies were used in a 12-year old vineyard (cv. ‘Crimson Seedless’) to implement a sustainable irrigation protocol according to the available water for the farmer. Four different irrigation treatments were assessed: (i) Control (CTL), irrigated to satisfy the maximum crop water requirements throughout the entire growing season; two DI treatments irrigated as CTL except during post-veraison, when the vines were irrigated at 50% CTL: (ii) Regulated Deficit Irrigation (RDI); and (iii) Partial Root Drying (PRD), alternating the wet and dry sides of the root zone, and (iv) irrigated according to the criteria followed by the farmer (FARM), and conditioned by the availability of water each season. The DI strategies resulted in a 50% increase in water use efficiency in the first two years and 81% during the third year. Weekly deficit irrigation protocols are proposed, which specify a maximum difference of 0.22 MPa of midday stem water potential with respect to well-watered vines for a range of irrigation water availabilities between 4000 and 7000 m3 ha−1. An applied water prediction model based on the Gaussian regression using day of the year and maximum temperature of the day is also proposed.

Sign in / Sign up

Export Citation Format

Share Document