scholarly journals Corn yield response to partial rootzone drying and deficit irrigation strategies applied with drip system

2009 ◽  
Vol 55 (No. 11) ◽  
pp. 494-503 ◽  
Author(s):  
A. Yazar ◽  
F. Gökçel ◽  
M.S. Sezen
Keyword(s):  
Water Use Efficiency ◽  
Water Use ◽  
Deficit Irrigation ◽  
Root Zone ◽  
Climatic Conditions ◽  
Yield Response ◽  
Corn Yield ◽  
Grain Yields ◽  
Significant Difference ◽  
Use Efficiency

This paper evaluates the effect of partial root zone drying (PRD) and deficit irrigation (DI) strategies on yield and water use efficiency of the drip-irrigated corn on clay soils under the Mediterranean climatic conditions in Southern Turkey. Four deficit (PRD-100; PRD-75; PRD-50; and DI-50) and one full irrigation (FI) strategies based on cumulative evaporation (E<sub> pan</sub>) from class A pan at 7-day interval were studied. Full (FI) and deficit irrigation (DI-50) treatments received 100 and 50% of E<sub>pan</sub>, respectively. PRD-100, PRD-75 and PRD-50 received 100, 75 and 50% E<sub>pan</sub> value, respectively. The highest water use was observed in FI as 677 mm, the lowest was found in PRD-50 as 375 mm. PRD-100 and DI-50 resulted in similar water use (438 and 445 mm). The maximum grain yield was obtained from the FI as 10.40 t/ha, while DI-50 and PRD-100 resulted in similar grain yields of 7.72 and 7.74 t/ha, respectively. There was a significant difference among the treatments with respect to grain yields (<i>P</i> < 0.01). The highest water use efficiency (WUE) was found in PRD-100 as 1.77 kg/m<sup>3</sup>, and the lowest one was found in FI as 1.54 kg/m<sup>3</sup>.

scholarly journals Yield Response of Drip-Irrigated Onion under Full and Deficit Irrigation with Saline Water in Arid Regions of Tunisia

ISRN Agronomy ◽  
2012 ◽  
Vol 2012 ◽  
pp. 1-8 ◽  
Author(s):  
K. Nagaz ◽  
M. M. Masmoudi ◽  
N. Ben Mechlia
Keyword(s):  
Water Use Efficiency ◽  
Water Use ◽  
Soil Salinity ◽  
Deficit Irrigation ◽  
Saline Water ◽  
Yield Response ◽  
Full Irrigation ◽  
Irrigation Regimes ◽  
Significant Difference ◽  
Use Efficiency

A two-year study was conducted in arid region of Tunisia to evaluate the effects of deficit irrigation regimes with saline water on soil salinity, yield, and water use efficiency of onion grown in a commercial farm on a sandy soil and drip-irrigated with water having an of 3.6 dS/m. Irrigation treatments consisted in water replacements of accumulated at levels of 100% (SWB-100, full irrigation), 80% (DI-80), 60% (DI-60), when the readily available water in the control treatment (SWB-100) is depleted, deficit irrigation during ripening stage (SWB100-MDI60) and farmer method corresponding to irrigation practices implemented by the local farmers. Results on onion production and soil salinization are globally coherent between the two-year experiments and show significant difference between irrigation regimes. Higher soil salinity was maintained in the root zone with DI-60 and farmer treatments than full irrigation (SWB-100). SWB100-MDI60 and DI-80 treatments resulted also in low values. No significant differences were observed in bulbs fresh and dry yields, bulbs number·ha−1 and weight from the comparison between full irrigation (SWB-100) and deficit treatments (DI-80, SWB100-MDI60). DI-60 irrigation treatment caused significant reductions in the four parameters considered in comparison with SWB-100. The farmer method caused significant reductions in yield components and resulted in increase of water usage 45 and 33% in 2008 and 2009, respectively. Water use efficiency was found to vary significantly among treatments, where the highest and the lowest values were observed for DI-60 and farmer treatments, respectively. The full irrigation (SWB-100) and deficit irrigation (DI-80 and SWB100-MDI60) strategies were found to be a useful practice for scheduling onion irrigation with saline water under the arid Mediterranean conditions of southern Tunisia.

scholarly journals Water-Yield Relations of Drip Irrigated Watermelon in Temperate Climatic Conditions

2016 ◽  
Vol 65 (1-2) ◽  
pp. 53-59
Author(s):  
Borivoj Pejić ◽  
Ksenija Mačkić ◽  
Srdjan Pavković ◽  
Branka Ljevnaić-Mašić ◽  
Miroljub Aksić ◽  
...  
Keyword(s):  
Water Use Efficiency ◽  
Water Use ◽  
Irrigation Water ◽  
Water Productivity ◽  
Relative Yield ◽  
Climatic Conditions ◽  
Yield Response ◽  
Water Yield ◽  
Irrigation Water Use ◽  
Use Efficiency

Summary The objective of the study, conducted in Vojvodina a northern part of the Serbia Republic, was to analyse the effect of drip irrigation on yield, evapotranspiration and water productivity of watermelon (Cirullus lanatus Thunb.) grown with plasticulture. Irrigation was scheduled on the basis of water balance method. Daily evapotranspiration was computed using the reference evapotranspiration and crop coefficient. The yield of watermelon in irrigation conditions (37,28 t/ha) was significantly higher compared to non irrigated (9,98 t/ha). Water used on evapotranspiration in irrigation conditions was 398 mm and 117 mm on non irrigated variant. The crop yield response factor of 1,04 for the whole growing season reveals that relative yield decrease was nearly equal to the rate of evapotranspiration deficit. The values of irrigation water use efficiency and evapotranspiration water use efficiency were 9,93 kg/m3 and 10,29 kg/m3 respectively. The determined results could be used as a good platform for watermelon growers in the region, in terms of improvement of the optimum utilization of irrigation water.

scholarly journals IMPACT OF REGULATED DEFICIT IRRIGATION AND FOLIAR ZINC NANOPARTICLES APPLICATION ON PRODUCTIVITY OF MANGO TREES

2020 ◽  
Keyword(s):  
Water Use Efficiency ◽  
Water Use ◽  
Deficit Irrigation ◽  
Fruit Set ◽  
Mangifera Indica ◽  
Total Yield ◽  
Regulated Deficit Irrigation ◽  
Significant Difference ◽  
Use Efficiency ◽  
Nano Zinc

what is impact of regulated deficit irrigation and foliar Zn nanoparticles application on productivity of mango trees? the answer to this question represents the main objective of this study. To verify this, an experiment was performed during the 2016/2017 on the mango trees mango (Mangifera indica L.) cvs." Nawomy" and "Sokary" which have about 16 years old in sandy soil under drip irrigation system. 100, 50, 75% of the crop evapotranspiration "ETc" were used, in parallel with three levels of concentrations of NPs-Zn micronutrient (0, 50, and 100 ppm) were applied three times; i.e., before flowering, 10 days after full bloom and after fruit set stages in both seasons. The highest yield and water-use efficiency were obtained with applying the RDI-75% of ETc treatment without significant difference that 100% of ETc treatment. The average fruit weight and size, length and width were larger for mango fruits from the 100% of ETc and 75% of ETc, with TSS%, total reducing sugars and ascorbic acid content being significantly greater than fruits of other irrigation treatments. Therefore, using the nano zinc as foliar sprays on mango trees at a concentration of 100 ppm improved fruit set percentage, total yield fruit quality (physical and chemical properties), also increased water use efficiency. It could be concluded that irrigated trees with 75% of ETc plus foliar spraying of nano zinc (NPs-ZnSO4) at 100 ppm was the most effective treatment for increasing fruit set, total yield and quality as well as water use efficiency of Nawomy and Sokary mango trees.

scholarly journals Deficit Irrigation Effects on Cabbage (Brassicaceae Oleracea var. capitata L. Grandslam F1) Yield in Unheated Greenhouse Condition

2018 ◽  
Vol 6 (9) ◽  
pp. 1251
Author(s):  
Hakan Büyükcangaz
Keyword(s):  
Water Use Efficiency ◽  
Water Use ◽  
Irrigation Water ◽  
Deficit Irrigation ◽  
Agricultural Research ◽  
Yield Response ◽  
Research Station ◽  
Greenhouse Condition ◽  
Irrigation Level ◽  
Use Efficiency

The aim of this study was to determine the effect of deficit irrigation on yield for cabbage grown under unheated greenhouse condition. The research was carried out at the Agricultural Research Station of Yenişehir High School of Uludağ University in Bursa, Turkey, in 2008. In the study, water was applied to cabbage as 1.00, 0.75, 0.50, 0.25 and 0.00% (as control) of evaporation from a Class A Pan corresponding to 2 day irrigation frequency. Irrigation water applied ranged from 70 to 520 mm and water consumption ranged from 90 to 548 mm. The effect of irrigation water level on the yield, head height, head diameter, head weight and dry matter were found to be significant. The highest yield was 72.8 t ha-1. Crop yield response factor for cabbage (ky) was found as 1.036. The highest values of water use efficiency (WUE) and irrigation water use efficiency (IWUE) for 2008 year of K2cp treatment was calculated to be 0.143 kg m-3 and 0.137 kg m-3, respectively. K2cp application (75%) can be recommended as the most effective irrigation level for the cabbage to which drip irrigation is applied under scarce and unheated greenhouse conditions.

scholarly journals Effect of Partial Root-Zone Drying Irrigation Technique (PRD) on the Total Dry Matter, Yield and Water Use Efficiency of Potato under Tunisian Semi-Arid Conditions

2016 ◽  
Vol 8 (7) ◽  
pp. 129 ◽  
Author(s):  
Béchir Ben Nouna ◽  
Mourad Rezig ◽  
Hassouna Bahrouni ◽  
Haroun Ben Ammar
Keyword(s):  
Water Use Efficiency ◽  
Water Use ◽  
Water Consumption ◽  
Dry Matter ◽  
Field Experiments ◽  
Root Zone ◽  
Dry Matter Yield ◽  
Cropping Season ◽  
Significant Difference ◽  
Use Efficiency

<p>Three field experiments were conducted in the plot of Technical Centre for Potato and Artichoke during three cropping season  2009, 2010 and 2011.The objective of this research is to evaluate the effect of the partial root-zone drying irrigation technique (PRD) on the dry matter, yield, water consumption and water use efficiency of potato (Spunta Variety). Four treatments were applied from the initiation of tuberisation stage to potato harvesting: FI treatment received 100% of Etc; PRD<sub>80</sub>, PRD<sub>70</sub>, and PRD<sub>60</sub> treatments received respectively: 80, 70 and 60% of FI at each irrigation event and it was shifted between the two sides of the plants every 2 to 10 days. The highest water consumption was observed in FI as 336.5, 376, and 341.8 mm in the 2009, 2010 and 2011 respectively, and the lowest was found in PRD<sub>60</sub> as 280.4, 294.5, and 256.1 mm in the 2009, 2010 and 2011 respectively. The maximum tuber yield was obtained from the FI as 25.6, 42.9 and 39.1 tha<sup>-1</sup>, in the 2009, 2010 and 2011 respectively. There was no significant difference between FI and PRD<sub>60</sub> with respect to tuber yields (LSD 5%).The highest water use efficiency (WUE<sub>Y</sub>) was found in PRD<sub>60</sub> as 13.4 kg m<sup>-3</sup>, in the second experiment (2010) and the lowest was found in PRD<sub>80</sub> as 6.8 kg m<sup>-3</sup> in the first experiment (2009). In the other hand, a linear relation between the accumulated total dry matter and the accumulated water consumption was able to be revealed.</p>

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