scholarly journals The Relative Economic Benefits of Conjunctive Use of Water over Surface and Ground Water in the Cauvery Command Area

2020 ◽  
pp. 45-51
Author(s):  
M. N. Venkataramana ◽  
L. Muralidhar ◽  
A. D. Ranganatha ◽  
B. Gururaj
Keyword(s):  
Water Management ◽  
Surface Water ◽  
Water Use Efficiency ◽  
Water Use ◽  
Conjunctive Use ◽  
Economic Benefits ◽  
Command Area ◽  
Productivity Level ◽  
Significant Difference ◽  
Use Efficiency

In command areas, overutilization of surface water led to deleterious effects, viz. water logging, salinization, alkalinisation of soils results into lower crop productivity and deficit water supply at the tail ends. As consequences, tail end a farmer heavily depends on groundwater will lead to emptying the aquifer and the low-quality water is pumped from deep wells. So, overuse of both the sources of water would leads to imbalance in water management as results into unsustainable water management. Thus, Conjunctive use is a single input to address the physical and economic scarcity of surface water (SW) and groundwater (GW) and it offers the solution to a large extent to hurtful effects of SW and GW. The present study was carried out in Mysuru and Mandya of Cauvery command area with 180 farmers of which 60 each from surface water (SW) groundwater (GW) and conjunctive use regime (CU). The results imply that significant difference in productivity level and gross returns for selected crops at 5 per cent significance. The conjunctive irrigation practicing sugarcane farmers realized higher gross returns over GW and SW to the extent of 24 percent and 5 percent respectively. There exists a positive relationship between net return and water use efficiency with correlation coefficient of 0.78 in case of maize and ragi crops. The higher water use efficiency found in CU water for all selected crops.

scholarly journals Effects of Irrigation and Nitrogen Fertilization on Seed Yield, Yield Components, and Water Use Efficiency of Cleistogenes songorica

Agronomy ◽  
2021 ◽  
Vol 11 (3) ◽  
pp. 466
Author(s):  
Qibo Tao ◽  
Mengjie Bai ◽  
Cunzhi Jia ◽  
Yunhua Han ◽  
Yanrong Wang
Keyword(s):  
Water Use Efficiency ◽  
Water Use ◽  
Seed Yield ◽  
Yield Components ◽  
Perennial Grass ◽  
Yield Component ◽  
Path Coefficient ◽  
Grass Seed ◽  
Significant Difference ◽  
Use Efficiency

Irrigation and nitrogen (N) are two crucial factors affecting perennial grass seed production. To investigate the effects of irrigation and N rate on seed yield (SY), yield components, and water use efficiency (WUE) of Cleistogenes songorica (Roshevitz) Ohwi, an ecologically significant perennial grass, a four-year (2016–2019) field trial was conducted in an arid region of northwestern China. Two irrigation regimes (I1 treatment: irrigation at tillering stage; I2 treatment: irrigation at tillering, spikelet initiation, and early flowering stages) and four N rates (0, 60, 120, 180 kg ha−1) were arranged. Increasing amounts of both irrigation and N improved SY, evapotranspiration, WUE, and related yield components like fertile tillers m−2 (FTSM) and seeds spikelet−1. Meanwhile, no significant difference was observed between 120 and 180 kg N ha−1 treatments for most variables. The highest SY and WUE was obtained with treatment combination of I2 plus 120 kg N ha−1 with four-year average values of 507.3 kg ha−1 and 1.8 kg ha−1 mm−1, respectively. Path coefficient and contribution analysis indicated that FTSM was the most important yield component for SY, with direct path coefficient and contribution coefficient of 0.626 and 0.592. Overall, we recommend I2 treatment (three irrigations) together with 120 kg N ha−1 to both increase SY and WUE, especially in arid regions. Future agronomic managements and breeding programs for seed should mainly focus on FTSM. This study will enable grass seed producers, plant breeders, and government program directors to more effectively target higher SY of C. songorica.

scholarly journals Adaptive management of water resources based on an advanced entropy method to quantify agent information

2019 ◽  
Vol 21 (3) ◽  
pp. 381-396 ◽  
Author(s):  
Kun Cheng ◽  
Shuai Wei ◽  
Qiang Fu ◽  
Wei Pei ◽  
Tianxiao Li
Keyword(s):  
Water Resources ◽  
Water Use Efficiency ◽  
Adaptive Management ◽  
Water Use ◽  
Water Resources Management ◽  
Economic Benefits ◽  
Entropy Method ◽  
Ecological Benefits ◽  
Resources Management ◽  
Use Efficiency

Abstract Adaptive management is currently an important method to optimize the management of complex water resources systems. Regional water resources adaptive management was conducted based on the advanced theory of a complex system multi-agent model; the state of an agent was tracked and modified by information entropy theory, which was improved by using individual standard deviations. With the goal of optimizing the adaptation of each agent of the region, water resources in the major grain production area of China were managed under the constraints of the total annual available water resources and water use efficiency requirements for 2015 and 2030. By introducing the adaptive water resources management in 2015, the domestic benefits and economic benefits increased by 2.90% and 14.81%, respectively, with respect to observed values. The ecological benefits declined by 3.63%, but ecological water demand was fully satisfied, and the ecological water environment was improved. Given the water use efficiency targets in 2030, applying adaptive management resulted in an increase of domestic, economic, and ecological benefits of 34.29%, 21.14%, and 1.78%, respectively. The results show that the adaptive management method presented can help managers to balance the benefits of various agents to determine the direction of water resources management decisions.

scholarly journals Effect of Education on Tendency to Water Use Efficiency in Housewives of Zarrin Dasht

2019 ◽  
Author(s):  
Ameneh Marzban ◽  
Ali Asghar Ebrahimi ◽  
Roya Malekahmadi ◽  
Vahid Rahmanian ◽  
Mehran Barzegaran ◽  
...  
Keyword(s):  
Water Use Efficiency ◽  
Water Use ◽  
Demographic Data ◽  
Intervention Group ◽  
Water Saving ◽  
Consumption Pattern ◽  
Fars Province ◽  
Standard Data ◽  
Significant Difference ◽  
Use Efficiency

Introduction: Zarrin Dasht is one of the low rainy areas of Fars province, which has faced repeated droughts in recent years. The aim of this study was to investigate the effect of education on the tendency towards water use efficiency in housewives of Zarrin Dasht. Materials and Methods: In this semi-experimental study, 130 patients (65 cases and 65 controls) were selected from housewives of Zarrin Dasht by cluster random sampling from four health centers. Data collection instrument was a standard, two-part questionnaire (demographic data and water saving tendency) that was a water saving standard. Data were analyzed by SPSS version 24 software. Results: The results of this study showed that the intervention was effective on the tendency of housewives to water use efficiency. There was a significant difference between the above variables before and after the intervention in the intervention group, and the relationship between age and occupation, and tendency to water use efficiency was statistically significant. Conclusion: Considering that education has a positive effect on women's tendency to water use efficiency, so providing water management education to housewives can lead to modification of consumption pattern.

scholarly journals Increasing Water Use Efficiency in Husk Tomato (<i>Physalis ixocarpa</i> Brot) Production in Tabasco, Mexico with Improved Irrigation Water Management

2014 ◽  
Vol 06 (13) ◽  
pp. 1248-1258
Author(s):  
Rutilo López-López ◽  
Ignacio Sánchez Cohen ◽  
Marco Antonio InzunzaIbarra ◽  
Andrés Fierro Álvarez ◽  
Gerardo Esquivel Arriaga
Keyword(s):  
Water Management ◽  
Water Use Efficiency ◽  
Water Use ◽  
Irrigation Water ◽  
Irrigation Water Management ◽  
Use Efficiency ◽  
Husk Tomato

scholarly journals Effect of Reuse Drainage Water Management on Rice Growth, Yield and Water Use Efficiency under Saline Soils of Egypt

2006 ◽  
Vol 5 (2) ◽  
pp. 287-295
Author(s):  
Abou El Hassan W. H. ◽  
B. A Zayed . ◽  
Y. Kitamura . ◽  
S.M. Shehata . ◽  
Zahor Ahmad . ◽  
...  
Keyword(s):  
Water Management ◽  
Water Use Efficiency ◽  
Water Use ◽  
Growth Yield ◽  
Drainage Water ◽  
Saline Soils ◽  
Rice Growth ◽  
Drainage Water Management ◽  
Use Efficiency

scholarly journals Drought Enhances the Role of Competition in Mediating the Relationship between Tree Growth and Climate in Semi-Arid Areas of Northwest China

Forests ◽  
2019 ◽  
Vol 10 (9) ◽  
pp. 804 ◽  
Author(s):  
Kanglong Lu ◽  
Ning Chen ◽  
Cankun Zhang ◽  
Xiaoxue Dong ◽  
Changming Zhao
Keyword(s):  
Climate Variability ◽  
Water Use Efficiency ◽  
Water Use ◽  
Tree Growth ◽  
Radial Growth ◽  
Intrinsic Water Use Efficiency ◽  
Adverse Weather ◽  
Significant Difference ◽  
Use Efficiency ◽  
The Relationship

Climate variability can exert a powerful impact on biotic competition, but past studies have focused largely on short-lived species, with a lack of attention to long-lived species such as trees. Therefore, there is a need to evaluate how competition regulates the climate-growth relationship in mature trees. We sampled the dominant tree species, Picea wilsonii Mast., on Xinglong Mountain, China, and studied the above issues by analyzing the relationship between tree radial growth, precipitation, and competition. In relatively wet years (precipitation > average), there was no significant difference in climate sensitivity between different competition classes. However, trees suffering from highly competitive stress were more sensitive to climate variability in all years, and particularly in the subset of years that was relatively drought (precipitation < average). These results suggest that competition enhances its ability to regulate tree growth response to climate variability in adverse weather conditions. Competition for resources between trees was asymmetrical, and an increase in height could give trees a disproportionate benefit. Thus, at trunk-level, both basal area incremental growth and intrinsic water-use efficiency of trees subjected to low competitive stress were significantly higher than trees that are subjected to highly competitive stress. Although the intrinsic water-use efficiency of trees under highly competitive stress increased more rapidly as the drought level increases, this did not change the fact that the radial growth of them declined more. Our research is valuable for the development of individual-tree growth models and advances our understanding for forest management under global climate change.

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