scholarly journals Participatory Irrigation Management and Irrigation Water Use Efficiency in Maize Production: Evidence from Zhangye City, Northwestern China

Water ◽  
2017 ◽  
Vol 9 (11) ◽  
pp. 822 ◽  
Author(s):  
Qing Zhou ◽  
Xiangzheng Deng ◽  
Feng Wu ◽  
Zhihui Li ◽  
Wei Song
Keyword(s):  
Water Use Efficiency ◽  
Water Use ◽  
Irrigation Water ◽  
Irrigation Management ◽  
Northwestern China ◽  
Irrigation Water Use Efficiency ◽  
Maize Production ◽  
Irrigation Water Use ◽  
Participatory Irrigation Management ◽  
Use Efficiency

scholarly journals Using limited irrigation water - crops or pasture?

2006 ◽  
pp. 173-176 ◽  
Author(s):  
G.N. Ward ◽  
J.L. Jacobs ◽  
F.R. Mckenzie
Keyword(s):  
Water Use Efficiency ◽  
Water Use ◽  
Irrigation Water ◽  
Irrigation System ◽  
Irrigation Management ◽  
Dairy Farmers ◽  
Forage Crops ◽  
Irrigation Water Use Efficiency ◽  
Irrigation Water Use ◽  
Use Efficiency

The irrigation of perennial pasture and the growing of dryland summer forage crops are two common methods of increasing the supply of and nutritional value of home grown forage on dairy farms in south west Victoria. In recent years the amount and reliability of supply of irrigation water to dairy farmers in the region has decreased through drought and increased regulation. Over the last 8 years a series of studies have been conducted to investigate the most efficient use of unreliable irrigation water supplies. Perennial pasture was found to be particularly sensitive in terms of reduced productivity and water use efficiency (WUE) to poor irrigation practices. However, under good management and reliable water supply it is still likely to be the easiest and most economically efficient irrigation system. Irrigated summer forage crops were found to have a higher WUE, but responses were variable due to year to year seasonal differences. These crops were found to be more tolerant of poor irrigation management and were able to take advantage of reduced amounts of irrigation water and one off irrigations. Keywords: brassicas, forage crops, irrigated pasture, irrigation, water use efficiency.

Irrigation water use efficiency in maize (Zea mays L.) produced with different irrigation intervals

2012 ◽  
Vol 60 (1) ◽  
pp. 21-27 ◽  
Author(s):  
M. Marković ◽  
P. Pepó ◽  
M. Sárvári ◽  
V. Kovačević ◽  
J. Šoštarić ◽  
...  
Keyword(s):  
Water Use Efficiency ◽  
Water Use ◽  
Irrigation Water ◽  
Weather Conditions ◽  
Growth Stages ◽  
Irrigation Water Use Efficiency ◽  
Maize Production ◽  
Yield Increase ◽  
Irrigation Water Use ◽  
Use Efficiency

In the decade from 2000 to 2009, the yield of maize grain in Croatia varied from 4.2 t ha−1 (2003) to 8.0 t ha−1 (2008). The yield variation was mainly caused by weather conditions unfavourable for maize production, meaning lack of precipitation, unevenly distributed during the vegetation season, and mean air temperatures above the long-term mean. Irrigation has become a justified and essential agrotechnical measure that minimizes the damage caused by water deficit during critical plant growth stages and ensures high yields with good quality. In this paper two vegetation seasons (2006 and 2007) with quite different weather conditions for maize production were analysed in order to examine the importance of irrigation in terms of yield increase, irrigation water use efficiency (IWUE), irrigation efficiency (IE) and irrigation water use index (IWUI) in years favourable (2006) or too dry (2007) for maize production. The yield surpluses achieved with irrigation ranged from 8.54 t ha−1 to 9.62 t ha−1 in the average crop year (2006) and from 8.43 t ha−1 to 10.7 t ha−1 in the dry year (2007), depending on the irrigation method. In the dry year the values of IWUE where higher than in the average year (6.16 and 13.75 kg ha−1/mm, respectively, averaged over the hybrids).

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.

scholarly journals Optimization of irrigation water use efficiency evaluation indicators based on DPSIR-ISD model

2019 ◽  
Vol 20 (1) ◽  
pp. 83-94 ◽  
Author(s):  
Liu Dong ◽  
Zhou Lihui ◽  
Li Heng ◽  
Fu Qiang ◽  
Li Mo ◽  
...  
Keyword(s):  
Water Use Efficiency ◽  
Water Use ◽  
Irrigation Water ◽  
Sanjiang Plain ◽  
Irrigation Water Use Efficiency ◽  
The Sanjiang Plain ◽  
The Sustainable Development ◽  
Irrigation Water Use ◽  
Use Efficiency ◽  
Agricultural Water Resources

Abstract The evaluation of irrigation water efficiency plays an important role in the efficient use of agricultural water resources and the sustainable development of agriculture. In order to make the evaluation of irrigation water use efficiency indicators more comprehensive and scientific, this paper constructs a new optimal model of evaluation indicators. By combining the Driver-Pressure-State-Impact-Response (DPSIR) model with the Information Significance Difference (ISD) evaluation indicators model, a novel DPSIR-ISD evaluation indicators combination model was constructed. Ten riverside irrigation areas in the Sanjiang Plain of northeastern China were selected for analysis. The results show that the DPSIR-ISD model was used to reduce the number of indicators from 44 to 14; these 14 indicators reflected 91.88% of the original information. The DPSIR-ISD method proposed in this paper takes into account the completeness and simplicity of the indicators system, and is more in line with the actual situation in the field. These results can provide a simpler and more convenient system for optimizing indicators for the study of evaluation indicators used to analyze irrigation water use efficiency.

Sign in / Sign up

Export Citation Format

Share Document