scholarly journals Kısıntılı Sulamanın Greyfurt Bahçesinde Su Kullanımı, Verim, Verim Öğeleri ve Meyve Niteliğine Etkisi

2020 ◽  
Vol 8 (1) ◽  
pp. 116
Author(s):  
Uğur Kekeç ◽  
Bülent Özekici
Keyword(s):  
Water Use ◽  
Irrigation Water ◽  
Water Shortage ◽  
Water Soluble ◽  
Soluble Solids ◽  
First Year ◽  
Irrigation Water Use ◽  
Second Year ◽  
Water Use Efficiencies ◽  
Solids Content

The research was carried out in 2011 and 2012 on the plot of the ‘Rio-Red’grapefruit of Çukurova University. In this study, it was aimed to determine evaluation of irrigation program in Rio-Red Grapefruit Orchard and the effects of water content, water use, tree and fruit development, yield and fruit quality characteristics(pomology) applied to Rio-Red subspecies trees at different levels. Three different irrigation schemes I100, I70 and I50waterwas applied. The average amount of irrigation water applied to grapefruit trees ranged from 332,48 mm (I100) to 128,69 mm (I50). The actual plant water consumption was found to be between 935,6 mm (I100) and 729,9 mm (I50) according to the water budget method. In the first year of the study, yields per irrigation ranged from 306 (I70) to 330 (I50) kg per tree. And they field per irrigation ranged from 59,6 kg (I100) and 108,5 kg (I50) for the second year. The total water use efficiencies obtained in 2011 were between WUEEt 5,18 kg/m3and 6,34 kg/m3; 0,52 kg/m3 to 1,74 kg/m3. The irrigation water use efficiencies in 2011, WUEI between 15,85 kg/m3 and 30,69 kg/m3, in 2012 from 2,17 kg/m3 to 14,27 kg/m3. The average amounts of water soluble solids content in the first year of operation were between 10,22% (I100) and 12,91% (I50); and from 12,41% (I100) to 13,47% (I50) in the second year. Within the scope of this study, since the effects of irrigation issues on fruit yield are not statistically significant, water shortage may be proposed for farmers in order to save water.

scholarly journals Productivity and water use of an irrigated high country pasture

1994 ◽  
pp. 159-163
Author(s):  
R.J. Paton ◽  
P.B. Greenwood
Keyword(s):  
Water Use ◽  
Irrigation Water ◽  
Root Zone ◽  
Irrigation System ◽  
Pasture Production ◽  
Structural Improvement ◽  
Mackenzie Basin ◽  
Irrigation Water Use ◽  
Border Strip ◽  
Water Use Efficiencies

Pasture production and irrigation water-use efficiencies were measured for 3 irrigation regimes on a Mackenzie shallow, stony soil in the Mackenzie Basin near Omarama. Irrigating at 25% was the most efficient of three irrigation frequencies maintained over the 198 1-1986 period (irrigated at O%, 25%, and 50% plant-available water capacity). Less frequent irrigation resulted in lower pasture yields due to increased water stress, while more frequent watering resulted in a 55% drainage loss of irrigation water below the root zone. At 1.16 t DIvUha per irrigation, the increase in pasture yield with irrigation at 25% was higher than most increases achieved in existing irrigation schemes in Central Otago and mid Canterbury. Over 6 years, this treatment required 4-7 irrigations annually and, on average, produced 6.0 t DM/ha more than did dryland pasture. The water-use efficiencies achieved in the border-strip irrigation system used were generally greater than expected for highly permeable stony soils where large drainage losses of irrigation water below the root zone are common. This was the result of reduced soil water transmission rates after compaction by heavy machinery during border strip* preparation. That effect of compaction was persistent, and had not diminished 9 years after initial pasture and irrigation development, as structural improvement of this soil is slow, even under irrigation. Keywords: high country pasture, irrigation, Mackenzie Basin

scholarly journals Effect of Deficit Irrigation and Reduced N Fertilization on Plant Growth, Root Morphology and Water Use Efficiency of Tomato Grown in Soilless Culture

Agronomy ◽  
2021 ◽  
Vol 11 (2) ◽  
pp. 228
Author(s):  
Ikram Ullah ◽  
Hanping Mao ◽  
Ghulam Rasool ◽  
Hongyan Gao ◽  
Qaiser Javed ◽  
...  
Keyword(s):  
Water Use Efficiency ◽  
Water Use ◽  
Irrigation Water ◽  
N Fertilization ◽  
Water Levels ◽  
Growth And Yield ◽  
Root Surface Area ◽  
Irrigation Water Use Efficiency ◽  
Irrigation Water Use ◽  
Use Efficiency

This study was conducted to investigate the effects of various irrigation water (W) and nitrogen (N) levels on growth, root-shoot morphology, yield, and irrigation water use efficiency of greenhouse tomatoes in spring–summer and fall–winter. The experiment consisted of three irrigation water levels (W: 100% of crop evapotranspiration (ETc), 80%, and 60% of full irrigation) and three N application levels (N: 100%, 75%, and 50% of the standard nitrogen concentration in Hoagland’s solution treatments equivalent to 15, 11.25, 7.5 mM). All the growth parameters of tomato significantly decreased (p < 0.05) with the decrease in the amount of irrigation and nitrogen application. Results depicted that a slight decrease in irrigation and an increase in N supply improved average root diameter, total root length, and root surface area, while the interaction was observed non-significant at average diameter of roots. Compared to the control, W80 N100 was statistically non-significant in photosynthesis and stomatal conductance. The W80 N100 resulted in a yield decrease of 2.90% and 8.75% but increased irrigation water use efficiency (IWUE) by 21.40% and 14.06%. Among interactions, the reduction in a single factor at W80 N100 and W100 N75 compensated the growth and yield. Hence, W80 N100 was found to be optimal regarding yield and IWUE, with 80% of irrigation water and 15 mM of N fertilization for soilless tomato production in greenhouses.

Sign in / Sign up

Export Citation Format

Share Document