scholarly journals Effect of Performance of Water Stashes Irrigation Approaches on Selected Species of Plant’s Water Productivity in Urban Rooftop Agriculture with Respect to Climate Change

Water ◽  
2021 ◽  
Vol 14 (1) ◽  
pp. 7
Author(s):  
Musammat Shahinara Begum ◽  
Sujit Kumar Bala ◽  
AKM Saiful Islam
Keyword(s):  
Climate Change ◽  
Irrigation Water ◽  
Drip Irrigation ◽  
Urban Areas ◽  
Agricultural Land ◽  
Residential Buildings ◽  
Water Productivity ◽  
Green Water ◽  
Irrigation Method ◽  
Rooftop Agriculture

Urbanization and population growth have led to urban areas with a substantial concrete surface compared to adjacent rural areas, creating challenges regarding fresh food, water security, and the need for agricultural land. Climate change affects the rainfall pattern and ground water in urban areas, so the gradual growth of urban rooftop agriculture (URTA) is an increasing trend for the owners of residential buildings. URTA is increasing in the form of private initiatives, but without consideration of efficient water management techniques and application of other related inputs. URTA differs substantially from traditional agriculture in terms of sunshine, thermal regime, the moisture dynamics of a concrete roof top, etc. Considering these aspects of URTA, an effective, efficient, science-based and economically viable irrigation method is necessary to popularize this approach and consequently increase the productivity of crops. With this in mind, the drip irrigation method is considered for the cultivation and determination of water productivity for selected species of plants such as the Bottle Gourd, Tomato, Chili, and Brinjal in the URTA, which was also compared to the traditional irrigation approach. This is why groundwater and green (grey and rain) water were considered as the source of irrigation during the dry season, based on the daily crop evapotranspiration and moisture content of the plant growing medium. For this reason, ET0 of the selected crops was measured using the CROPWAT 8.0 model. The results of this study revealed that the optimum irrigation water requirement of any crop in URTA is around 54% access (ETc), and 46–64% of access irrigation water is used by the traditional method compared to the drip irrigation method. The study reported that with drip irrigation with potable water, the yield was increased by 21.43–22.40% and rain and grey-water also increased yield by 31.87–33.33% compared to container and traditional pipe irrigation. It was also found that the water qualities of mixed water (grey and rainwater) are in an acceptable range limit for irrigation. As a result, urban planners, city dwellers, and researchers can formulate appropriate plans to cultivate different species of plants through this water saving irrigation method using green water, and should explore the concept of water-smart URTA technologies as organic inventions embedded in these results.

IRRIGATION SCHEDULE OF LONG-FRUIT CUCUMBERS AND HYDROAMELIORATIVE REQUIREMENTS FOR DRIP IRRIGATION IN PLASTIC GREENHOUSE

2019 ◽  
pp. 307-313
Author(s):  
Rumiana Kireva ◽  
Roumen Gadjev
Keyword(s):  
Irrigation Water ◽  
Drip Irrigation ◽  
Water Productivity ◽  
Irrigation Schedule ◽  
Water Source ◽  
Climate Conditions ◽  
Irrigation Technology ◽  
Irrigation Technologies ◽  
Pressure Flows ◽  
Efficient Water Use

The deficit of the irrigation water requires irrigation technologies with more efficient water use. For cucumbers, the most suitable is the drip irrigation technology. For establishing of the appropriate irrigation schedule of cucumbers under the soil and climate conditions in the village of Chelopechene, near Sofia city, the researchеs was conducted with drip irrigation technology, adopting varying irrigation schedules and hydraulic regimes - from fully meeting the daily crops water requirements cucumbers to reduced depths with 20% and 40%. It have been established irrigation schedule with adequate pressure flows in the water source, irrigation water productivity and yields of in plastic unheated greenhouses of the Sofia plant.

scholarly journals Potential and Actual Water Savings through Improved Irrigation Scheduling in Small-Scale Vegetable Production

Agronomy ◽  
2019 ◽  
Vol 9 (12) ◽  
pp. 888 ◽  
Author(s):  
Christoph Studer ◽  
Simon Spoehel
Keyword(s):  
Water Use ◽  
Irrigation Water ◽  
Drip Irrigation ◽  
Water Productivity ◽  
Irrigation Scheduling ◽  
Small Scale ◽  
Vegetable Production ◽  
Usual Practice ◽  
Irrigation Water Use ◽  
Small Scale Farmers

Appropriate irrigation scheduling for efficient water use is often a challenge for small-scale farmers using drip irrigation. In a trial with 12 farmers in Sébaco, Nicaragua, two tools to facilitate irrigation scheduling were tested: the Water Chart (a table indicating required irrigation doses) and tensiometers. The study aimed at evaluating if and to what extent simple tools can reduce irrigation water use and improve water productivity in drip-irrigated vegetable (beetroot; Beta vulgaris L.) production compared with the farmers’ usual practice. Irrigation water use was substantially reduced (around 20%) when farmers irrigated according to the tools. However, farmers did not fully adhere to the tool guidance, probably because they feared that their crop would not get sufficient water. Thus they still over-irrigated their crop: between 38% and 88% more water than recommended was used during the treatment period, resulting in 91% to 139% higher water use than required over the entire growing cycle. Water productivity of beetroot production was, therefore, much lower (around 3 kg/m3) than what can be achieved under comparable conditions, although yields were decent. Differences in crop yield and water productivity among treatments were not significant. The simplified Water Chart was not sufficiently understandable to farmers (and technicians), whereas tensiometers were better perceived, although they do not provide any indication on how much water to apply. We conclude that innovations such as drip irrigation or improved irrigation scheduling have to be appropriately introduced, e.g., by taking sufficient time to co-produce a common understanding about the technologies and their possible usefulness, and by ensuring adequate follow-up support.

scholarly journals Irrigation and fertigation scheduling under drip irrigation for maize crop in sandy soil

2016 ◽  
Vol 30 (1) ◽  
pp. 47-55 ◽  
Author(s):  
Mahmoud M. Ibrahim ◽  
Ahmed A. El-Baroudy ◽  
Ahmed M. Taha
Keyword(s):  
Sandy Soil ◽  
Irrigation Water ◽  
Drip Irrigation ◽  
Water Productivity ◽  
Fertilizer Application ◽  
Irrigation Scheduling ◽  
Growth And Yield ◽  
Control Treatment ◽  
Crop Evapotranspiration ◽  
Irrigation Time

Abstract Field experiments was conducted to determine the best irrigation scheduling and the proper period for injecting fertilizers through drip irrigation water in a sandy soil to optimize maize yield and water productivity. Four irrigation levels (0.6, 0.8, 1.0 and 1.2) of the crop evapotranspiration and two fertigation periods (applying the recommended fertilizer dose in 60 and 80% of the irrigation time) were applied in a split-plot design, in addition to a control treatment which represented conventional irrigation and fertilization of maize in the studied area. The results showed that increasing the irrigation water amount and the fertilizer application period increased vegetative growth and yield. The highest grain yield and the lowest one were obtained under the treatment at 1.2 and of 0.6 crop evapotranspiration, respectively. The treatment at 0.8 crop evapotranspiration with fertilizer application in 80% of the irrigation time gave the highest water productivity (1.631 kg m−3) and saved 27% of the irrigation water compared to the control treatment. Therefore, this treatment is recommended to irrigate maize crops because of the water scarcity conditions of the studied area.

scholarly journals Irrigation Scheduling through Drip/Surface Method: A Review on Growth, Yield, Nutrient Uptake and Water Productivity of Wheat

2020 ◽  
Vol 41 (03) ◽  
Author(s):  
Sachin Himmatrao Malve ◽  
Ashok Saini ◽  
Praveen Rao V
Keyword(s):  
Irrigation Water ◽  
Drip Irrigation ◽  
Water Productivity ◽  
Growth Yield ◽  
Irrigation Scheduling ◽  
Vital Role ◽  
Considerable Saving ◽  
Time Of Application ◽  
Maximum Benefit ◽  
Water Scarce

Water is one of the most essential natural resource, which is often costly and limiting input particularly in arid and Semi-arid. Since water is the life line for accruing desired yield levels, its time of application, method of application and quantity applied levels besides saving water. Further, there is a need for judicious use of water to reap the maximum benefit from this limiting resource. Off late, amongst irrigation methods, drip irrigation plays a vital role in economizing irrigation water, higher water use efficiency and enhancing crop yield in water scarce areas. Many research findings also confirm considerable saving in irrigation water through adoption of precise irrigation method like drip irrigation. The response of wheat to surface check basin and drip irrigation is reviewed.

scholarly journals EFFECT OF IRRIGATION WATER SALINITY ON SWEET PEPPER YIELD AND ITS WATER PRODUCTIVITY UNDER DRIP IRRIGATION

2019 ◽  
Vol 97 (2.1) ◽  
pp. 385-404
Author(s):  
FAWZIA A. NAGM AL DEEN ◽  
MOHAMED Y. . El ANSARY ◽  
MONTASER A. AWAAD ◽  
WAEL M. SOLTAN
Keyword(s):  
Irrigation Water ◽  
Drip Irrigation ◽  
Water Productivity ◽  
Sweet Pepper ◽  
Water Salinity ◽  
Irrigation Water Salinity

scholarly journals Re-designing irrigated intensive cereal systems through bundling precision agronomic innovations for transitioning towards agricultural sustainability in North-West India

2019 ◽  
Vol 9 (1) ◽  
Author(s):  
H. S. Jat ◽  
P. C. Sharma ◽  
Ashim Datta ◽  
Madhu Choudhary ◽  
S. K. Kakraliya ◽  
...  
Keyword(s):  
Irrigation Water ◽  
Drip Irrigation ◽  
Irrigation System ◽  
Water Productivity ◽  
Crop Productivity ◽  
Drip Irrigation System ◽  
Flood Irrigation ◽  
Energy Productivity ◽  
North West ◽  
Surface Drip Irrigation

AbstractA study was conducted to design productive, profitable, irrigation water¸ nitrogen and energy use efficient intensive cereal systems (rice-wheat; RW and maize-wheat; MW) in North-West India. Bundling of conservation agriculture (CA) with sub-surface drip irrigation termed as CA+ were compared with CA alone and conventional tillage based and flood irrigated RW rotation (farmer’s practice; ScI). In contrast to conventional till RW rotation which consumed 1889 mm ha−1 irrigation water (2-yr mean), CA+ system saved 58.4 and 95.5% irrigation water in RW and MW rotations, respectively. CA+ practices saved 45.8 and 22.7% of irrigation water in rice and maize, respectively compared to CA with flood irrigation. On a system basis, CA+ practices saved 46.7 and 44.7% irrigation water under RW (ScV) and MW (ScVI) systems compared to their respective CA-based systems with flood irrigation (ScIII and ScIV). CA+ in RW system recorded 11.2% higher crop productivity and improved irrigation water productivity by 145% and profitability by 29.2% compared to farmers’ practice. Substitution of rice with maize (MW system; ScVI) recorded 19.7% higher productivity, saved 84.5% of irrigation water and increased net returns by 48.9% compared to farmer’s practice. CA+ RW and MW system improved energy productivity by 75 and 169% and partial factor productivity of N by 44.6 and 49.6%, respectively compared to ScI. The sub-surface drip irrigation system saved the fertilizer N by 20% under CA systems. CA+ in RW and MW systems recorded ~13 and 5% (2-yr mean) higher profitability with 80% subsidy on installing sub-surface drip irrigation system and similar profitability without subsidy scenario compared with their respective flood irrigated CA-based systems.

Drip Irrigation to Enhance Water Productivity of Rice under Climate Change

2017 ◽  
Author(s):  
S.N.C.M. Dias ◽  
◽  
Niels Schütze ◽  
Franz Lennartz Franz Lennartz ◽  
◽  
...  
Keyword(s):  
Climate Change ◽  
Drip Irrigation ◽  
Water Productivity
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