Your search found 13 records
1 Ahmad, S.; Yasin, M.; Ahmad, M. M.. 1991. Flow measurements with portable cut throat flume and broad crested weir in flat gradient channels. Irrigation and Drainage Systems, 5(2):141-150.
(Location: IWMI-HQ Call no: PER Record No: H08853)
2 Yasin, M.; Ahmad, S.; Ahmad, M. M.; Bhatti, A. A. 1993. Innovative surface irrigation methods for fruit orchards. In Government of Pakistan-USAID Irrigation Systems Management Research Project; IIMI, Proceedings: Irrigation Systems Management Research Symposium, Lahore, 11-13 April 1993. Vol.VII. - Improving on-farm water use and application. pp.1-8.
Surface irrigation ; Horticulture ; Border irrigation ; Irrigation requirements / Pakistan / Balochistan
(Location: IWMI-HQ Call no: IIMI 631.7.8 G730 IIMI Record No: H012909)
Surface irrigation methods such as borders, round basins, modified round basins and modified furrows were evaluated for the peach orchard at the Water Resources Research Institute Field Station, NARC, Islamabad. The three methods with slope of 0.75% were compared in terms of savings in irrigation water and duration of irrigation against borders with slope of 0.43%. Compared to borders, savings in water application of 486%, 260% and 464% were observed in round basins, modified round basins and modified furrows, respectively. A similar trend was observed in the duration of irrigation. Distribution uniformity was estimated using minimum and average depth of water infiltrated. Distribution uniformity of 59.2%, 81.3%, 92.3% and 76.6%, was observed for round basins, modified round basins, modified furrows and borders, respectively. Therefore, modified furrows can be used to achieve higher uniformity and five times more area can be irrigated for deciduous orchards. This system also provides an opportunity to have better orchard management where transmission of soil borne diseases is much lower compared to other methods. This method was designed where wetted areas is more or less the same as trickle irrigation except the main furrow line. Thus this system is suitable for areas like Balochistan where water is at premium.
3 Bhatti, A. A.; Ahmad, M. M.; Moshabbir, P. M.; Ahmad, S. 1993. Benefits of supplemental irrigation for wheat in Barani environment. In Government of Pakistan-USAID Irrigation Systems Management Research Project; IIMI, Proceedings: Irrigation Systems Management Research Symposium, Lahore, 11-13 April 1993. Vol.VII. - Improving on-farm water use and application. pp.45-54.
Supplementary irrigation ; Irrigation effects ; Wheat ; Crop yield ; Sprinkler irrigation / Pakistan
(Location: IWMI-HQ Call no: IIMI 631.7.8 G730 IIMI Record No: H012912)
A field experiment was conducted to evaluate the benefits of supplemental irrigation for wheat crop under Barani environment. Three irrigation treatments, namely 10 mm at Rauni, 10 mm at 50% MAD, and 25 mm at 75% MAD, were employed. The experiment was conducted at the Water Resources Research Institute, Field Station, National Agricultural Research Centre, Islamabad using raingun sprinklers for supplemental irrigation. The wheat crop yield with supplemental irrigation was compared with Barani crop yield, and a considerable increase in yield of 45% and 117% was observed during 1990-91 and 1991-92 wheat growing seasons at Islamabad, where seasonal rainfall of 523 mm and 354 mm was received, respectively. The seasonal rainfall was in excess or sufficient to meet seasonal crop evapotranspiration requirement but was not well spread during the growing season. The highest net benefits from supplemental irrigation were Rs.6,583 and Rs.9,651 per hectare during 1990-91 and 1991-92 wheat growing seasons, respectively. The benefits from supplemental irrigation are expected to increase in dry years and/or in dry regions. However, the three years of experimentation revealed that even in sub-humid to humid regions, and during wet years, considerable increase in farm net return can be achieved through supplemental irrigation.
4 Moshabbir, P. M.; Ahmad, S.; Yasin, M.; Ahmad, M. M.. 1993. Indigenization of trickle irrigation technology. In Government of Pakistan-USAID Irrigation Systems Management Research Project; IIMI, Proceedings: Irrigation Systems Management Research Symposium, Lahore, 11-13 April 1993. Vol.VII. - Improving on-farm water use and application. pp.79-89.
(Location: IWMI-HQ Call no: IIMI 631.7.8 G730 IIMI Record No: H012914)
During the 1980s many research and developmental organizations exerted efforts to introduce trickle irrigation systems in the country. All these efforts were based on the use of imported materials and were unsuccessful due to higher installation costs and lack of services and skills. PARC was entrusted to promote trickle irrigation technology in the country and to analyze the problems related to the successful introduction of this technology. This resulted in the process of indigenization of trickle irrigation systems in the country using local skills, technology and materials. Accordingly, PARC established the National Irrigation Systems Testing Laboratories of the Water Resources Research Institute, NARC, for research, evaluation and testing of trickle irrigation systems and indigenization. In collaboration with the Plastics Technology Centre (PTC), Karachi and GRIFFON Industrial Corporation, Lahore, PARC successfully completed the indigenization process and commercial production has been initiated. Now the appropriate technology, skills and services are available which will be used in the future for large scale adoption of trickle irrigation in the country. The estimated cost of a standard trickle irrigation system is Rs.9000/acre based on the Ex. Factory price.
5 Ahmad, S.; Ahmad, M. M.; Yasin, M.; Akbar, G.; Khan, Z. 2000. Assessment of shallow groundwater quality case study of Mona SCARP. In GWP; Pakistan Water Partnership, Proceedings of Regional Groundwater Management Seminar, October 9-11, 2000, Islamabad. pp.17-25.
Water quality ; Assessment ; Groundwater ; Case studies ; Shallow tube wells ; Pumping ; Villages ; Farmer participation ; Irrigation management ; Participatory management ; Participatory rural appraisal ; Water availability ; Water table ; Manual pumps / Pakistan / Indus Basin / Mona
(Location: IWMI-HQ Call no: 631.7.6.3 G730 GWP Record No: H026914)
6 Yasin, M.; Ahmad, S.; Asghar, Muhammad Nadeem; Ahmad, M. M.. 2004. Root zone salinity management using fractional skimming wells with pressurized Irrigation – Volume IV. Pressurized irrigation. Lahore, Pakistan: International Water Management Institute (IWMI) 68p.
Wells ; Sprinkler irrigation ; Flow ; Pipes ; Design ; Pumping ; Water quality ; Recharge ; Performance evaluation ; Costs ; Villages / Pakistan
(Location: IWMI-HQ Call no: IWMI 631.7.1 G730 YAS Record No: H036174)
(2.75 MB)
7 Ahmad, S.; Yasin, M.; Asghar, Muhammad Nadeem; Ahmad, M. M.. 2004. Root zone salinity management using fractional skimming wells with pressurized Irrigation. Volume V - Hand book on pressurized irrigation. Lahore, Pakistan: International Water Management Institute (IWMI). ii, 87p.
Sprinkler irrigation ; Drip irrigation ; Wells ; Pipes ; Hydraulics ; Design ; Pumping ; Irrigation scheduling ; Operations ; Maintenance / Pakistan / Indus Basin
(Location: IWMI-HQ Call no: IWMI 631.7.1 G730 AHM Record No: H036175)
(3.16 MB)
8 Yasin, M.; Ahmad, S.; Ahmad, M. M.; Akbar, G.; Khan, Z. 2004. Dugwell as an option of skimming well. In Asghar, Muhammad Nadeem; Shafique, Muhammad Siddique; Ahmad, S.; Kahlown, M. A. (Eds.). Root zone salinity management using fractional skimming wells with pressurized Irrigation: Proceedings of the Year-End Seminar 2000. Lahore, Pakistan: IWMI. pp.22-34.
(Location: IWMI-HQ Call no: IWMI 631.7.6.3 G730 ASG Record No: H036179)
(0.92 MB)
9 Ahmad, S.; Yasin, M.; Akbar, G.; Khan, Z.; Ahmad, M. M.. 2004. Pressurized and innovative irrigation systems: raingun sprinkler systems. In Asghar, Muhammad Nadeem; Shafique, Muhammad Siddique; Ahmad, S.; Kahlown, M. A. (Eds.), Root zone salinity management using fractional skimming wells with pressurized Irrigation: Proceedings of the Year-End Seminar 2000. Lahore, Pakistan: IWMI. pp.55-80.
Sprinkler irrigation ; Irrigation design ; Hydraulics ; Flow ; Pipes ; Pumping ; Tube wells / Pakistan
(Location: IWMI-HQ Call no: IWMI 631.7.6.3 G730 ASG Record No: H036181)
(1.52 MB)
10 Ahmad, S.; Yasin, M.; Akbar, G.; Khan, Z.; Ahmad, M. M.. 2004. Methodology development for selection of sites for skimming wells and pressurized irrigation systems. In Asghar, Muhammad Nadeem; Shafique, Muhammad Siddique; Ahmad, S.; Kahlown, M. A. (Eds.), Root zone salinity management using fractional skimming wells with pressurized Irrigation: Proceedings of the Year-End Seminar 2000. Lahore, Pakistan: IWMI. pp.81-100.
Tube wells ; GIS ; Groundwater ; Water quality ; Constraints ; Farmers ; Manual pumps / Pakistan / Mona
(Location: IWMI-HQ Call no: IWMI 631.7.6.3 G730 ASG Record No: H036182)
(1.27 MB)
11 Ahmad, S.; Yasin, M.; Ahmad, M. M.; Akbar, G.; Khan, Z.; Majeed, R. 2004. Performance evaluation of locally manufactured raingun sprinkler irrigation systems. In Asghar, Muhammad Nadeem; Shafique, Muhammad Siddique; Yasin, Muhammad ; Alam, Muhammad Mehboob (Eds.), Root zone salinity management using fractional skimming wells with pressurized Irrigation: Proceedings of the Year-End Seminar 2001. Lahore, Pakistan: IWMI. pp.1-32.
Sprinkler irrigation ; Irrigation design ; Supplementary irrigation ; Performance evaluation ; Costs ; Wells / Pakistan / Mona / Indus / Thatti Noor
(Location: IWMI-HQ Call no: IWMI 631.7.6.3 G730 ASG Record No: H036185)
(2.06 MB)
12 Yasin, M.; Ahmad, S.; Roohi, R.; Majeed, R.; Hussain, S. A.; Rehan, A; Ahmad, M. M.. 2004. Assessment of hydrological potential for installation of dugwells: development of practical methodology. In Asghar, Muhammad Nadeem; Shafique, Muhammad Siddique; Yasin, Muhammad ; Alam, Muhammad Mehboob (Eds.). Root zone salinity management using fractional skimming wells with pressurized Irrigation: Proceedings of the Year-End Seminar 2001. Lahore, Pakistan: IWMI. pp.33-49.
(Location: IWMI-HQ Call no: IWMI 631.7.6.3 G730 ASG Record No: H036186)
(1.29 MB)
13 Ahmad, M. B.; Muavia, A.; Iqbal, M.; Arshed, A. B.; Ahmad, M. M.. 2023. Spatio-temporal drought assessment and comparison of drought indices under climatic variations in drought-prone areas of Pakistan. Journal of Water and Climate Change, 14(10):3726-3752. [doi: https://doi.org/10.2166/wcc.2023.602]
Drought ; Assessment ; Monitoring ; Precipitation ; Evapotranspiration ; Rainfall patterns ; Vegetation ; Satellites ; Water management ; Extreme weather events / Pakistan / Balochistan / Dalbandin / Jiwani / Kalat / Khuzdar / Lasbella / Quetta / Pasni / Sibi / Zhob / Panjgur
(Location: IWMI HQ Call no: e-copy only Record No: H052296)
https://iwaponline.com/jwcc/article-pdf/doi/10.2166/wcc.2023.602/1313599/jwc0143726.pdf
https://vlibrary.iwmi.org/pdf/H052296.pdf
https://vlibrary.iwmi.org/pdf/H052296.pdf
(3.15 MB) (3.15 MB)
Climatic variations cause droughts which badly affect the environment. The study focused on monitoring droughts to aid decision-making and mitigate their negative impacts on water availability for agriculture and livelihoods in the face of increasing water demand and climate change. To assess the agricultural droughts, a new agricultural Standardized Precipitation Index (aSPI) was calculated which is not used earlier in Balochistan. Widely recommended Standardized Precipitation Index (SPI) and Standardized Precipitation Evapotranspiration Index (SPEI) were used for meteorological drought assessment. Drought indices comparison was also conducted to check the applicability. Rainfall, maximum temperature, and minimum temperature data (1992 to 2021) were utilized to calculate SPI, aSPI, and SPEI at different timescales (3, 6, 9, and 12 months) using DrinC software and SPEI calculator. Indices results revealed the following severe to extreme drought years: 1998, 1999, 2000, 2001, 2002, 2004, 2008, 2011, 2014, 2016, and 2017. It was determined that Dalbandin, Quetta, Sibi, Kalat, Khuzdar, and Zhob experienced higher extreme drought frequencies. Both long- and short-term drought durations were observed. Indices comparison showed that SPI is the most efficient drought index compared to aSPI and SPEI. This study offers valuable insights for managing water resources in the face of climate-induced droughts.
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