Your search found 19 records
(Location: IWMI-HQ Call no: 631.7.8 G730 PAK Record No: H0269)
2 Amundson, R. G.; Lund, L. J. 1987. The stable isotope chemistry of a native and irrigated typic natrargid in the San Joaquin Valley of California. Soil Science Society of America Journal, 51(3):761-767.
(Location: IWMI-HQ Call no: PER Record No: H02995)
(Location: IWMI-HQ Call no: PER Record No: H03678)
4 Maurya, P. P. Development of salinity and alkalinity in irrigation soils of Nigeria. Fourth Afro-Asian Regional Conference of ICID, Lagos, Nigeria. Vol.II. 17p.
(Location: IWMI-HQ Call no: 631.7.2 G214 MAU Record No: H03913)
5 Honeycutt, C. W.; Heil, R. D. 1984. Consideration of various soil properties for the irrigation management of vertisols. Cairo, Egypt: Egypt Water Use and Management Project. 33p. (EWUP technical report no.73)
(Location: IWMI-HQ Call no: 631.7.2 G232 HON Record No: H02397)
6 Levy, R. (Ed.) 1984. Chemistry of irrigated soils. New York, NY, USA: Van Nostrand Reinhold Co. xiii, 417p. (Benchmark papers in soil science; 2)
(Location: IWMI-HQ Call no: 631.41 G000 LEV Record No: H06420)
(Location: IWMI-HQ Call no: PER Record No: H06884)
(Location: IWMI-HQ Call no: PER Record No: H06885)
9 Thorburn, P. J. 1990. Interpretation of solute profile dynamics in irrigated soils: III - A simple model of bypass flow in soils. Irrigation Science, 11(4):219-225.
(Location: IWMI-HQ Call no: PER Record No: H06886)
10 Wallach, R. 1990. Soil water distribution in a nonuniformly irrigated field with root extraction. Journal of Hydrology, 119(1-4):137-150.
(Location: IWMI-HQ Call no: PER Record No: H07361)
(Location: IWMI-HQ Call no: PER Record No: H09261)
12 Massoud, F. I. 1976. Soil management and agronomic practices. In Prognosis of salinity and alkalinity: Report of an expert consultation, Rome, 3-6 June 1974. Rome, Italy: FAO. pp.111-129. (FAO soils bulletin 31)
(Location: IWMI-HQ Call no: 631.416 G000 PRO Record No: H09426)
13 Cordeiro, G. G. 1985. Aspectos gerais sobre salinidade em reas irrigadas: Origem diagn¢stico e recupera+ao. Trabalho apresentado no "III Seminario de Irriga+ao e Drenagem", Cruz das Almas, BA, de 07 a 11 de Outubro de 1985. 16p.
(Location: IWMI-HQ Call no: P 2803 Record No: H012988)
(Location: IWMI-HQ Call no: P 3377 Record No: H014193)
The productivity of irrigated agriculture in Australia is low for most crops and one important factor is the physical and chemical constraints caused by sodicity in the rootzone. Over 80% of the irrigated soils are sodic and have degraded structure limiting water and gas transport and root growth. Irrigation, without appropriate drainage, leads to the buildup of salts in soil solutions with increased sodium absorption ratio (SAR) and can develop perched watertables due to a very low leaching fraction of the soil layers exacerbated by sodicity. Therefore, irrigation management in Australia is closely linked with the management of soil sodicity. The inevitable consequence of continued irrigation of crops and pastures with saline-sodic water without careful management is the further sodification of soil layers and concentration of salt in the rootzone. This will increase the possibility of dissolving toxic elements from soil minerals. The yields of crops can be far below the potential yields determined by climate. The cost of continued use of amendments and fertilizers to maintain normal yields will increase under saline-sodic irrigation. Most of the irrigated soils in Australia need reclamation of sodicity of soil layers at least in the rootzone. The management of these sodic soils involves the application of gypsum, suitable tillage and the maintenance of structure by the buildup of organic matter and biological activity over time. The artificial drainage, an essential component of the management of irrigated sodic soils, is possible. By following these soil management practices, irrigated agriculture in Australia will become sustainable with increased yields and high economic returns.
15 Corwin, D. L.; Rhoades, J. D.; Vaughan, P. J.; Lesch, S. M. 1995. Salt-loading assessment methodology for managing soil salinity. In Clean water - Clean environment - 21st century: Team agriculture - Working to protect water resources: Conference proceedings, March 5-8, 1995, Kansas City, Missouri. Volume II: Nutrients. St. Joseph, MI, USA: ASAE. pp.35-38.
(Location: IWMI-HQ Call no: 333.91 G000 CLE Record No: H018769)
16 Karimov, Akmal; Noble, Andrew; Kurbantaev, R.; Solieva, N. 2008. Stability of soil aggregates in Arys Turkestan Canal Command Zone. Paper presented at the International Conference on Agro-technologies for Soil and Water Conservation in Uzbekistan, Uzbek Research Institute of Cotton Growing, Tashkent, Uzbekistan, 5 December 2008. 14p.
(Location: IWMI HQ Call no: e-copy only Record No: H041910)
(0.17 MB)
17 Halalsheh, L.; Ghunmi, L. A.; Al-Alami, N.; Fayyad, M. 2008. Fate of pathogens in tomato plants and soil irrigated with secondary treated wastewater. In Qadir, Manzoor (Ed.) 2008. Sustainable management of wastewater for agriculture: proceedings of the First Bridging Workshop, Aleppo, Syria, 11-15 November 2007. Aleppo, Syria: International Center for Agricultural Research in the Dry Areas (ICARDA); Colombo, Sri Lanka: International Water Management Institute (IWMI) pp.86-106.
(Location: IWMI HQ Call no: IWMI 631.7.5 GG30 QAD Record No: H042145)
(Location: IWMI HQ Call no: PER Record No: H043493)
(0.16 MB)
Inefficient farm-level water management aggravates groundwater fluctuation and salt accumulation particularly in arid and semi-arid irrigated agriculture. Inappropriate water management practices in the Harran Plain are a good example. A study was carried out to investigate the effect of groundwater fluctuation on the seasonal salt dynamic in four widespread soil series in the Harran Plain with different natural drainage, south-eastern Turkey. Four profiles were excavated and soil samples were collected seasonally up to 100 cm depth with 10 cm intervals. Similarly, irrigation and groundwater samples were collected from the fields where soil sampling was carried out. Significant seasonal variations in the salt dynamic were observed with the fluctuation levels of the groundwater. Total salt content at 1 m soil depth remained constant during the year, however salt fluctuation throughout the root zone in the growing season exceeded the threshold values of corn, wheat and cotton, commonly grown crops in the region, of 1.7, 6.0 and 7.7 dSm1, respectively. However, soils with less water fluctuation showed lower salt accumulation in the root zone from May to October. Results also confirmed that soils can be non-saline, but groundwater salinity, which may not be point specific, requires special attention.
(Location: IWMI HQ Call no: e-copy only Record No: H049121)
(0.21 MB) (216 KB)
Investigation of heavy metals (HM) fractions in soils irrigated with wastewater (WW) would ascertain their bioavailability and contamination level in soils. This study investigated HM fractions in soils after long-term WW irrigation. WW irrigation profoundly affected HM fractions in soil. The ranges of HM concentrations in soils irrigated with WW were apparently wide. All fractions were significantly higher in the fields irrigated with industrial WW than rain-fed fields. HM concentrations varied in the soils as Pb > Cu > Ni > Zn > Fe > Cd > Mn after WW irrigation. In rainfed fields, HM concentrations differed in soils as Fe > Zn > Mn > Pb > Cd > Cu > Ni. The HM fractions were dominant in the residual form followed by oxides bound and carbonate associated fractions in WW-irrigated soils. Lower contents of HM in the soil were obtained in the exchangeable fraction. WW irrigation resulted in the transformation of HM into different fractions as residual > oxide associated > carbonate associated > organically bound > exchangeable form. Repeated WW irrigation increased pH values of the soils. The higher EC of soil indicated an accumulation of salts in the soils due to WW irrigation. Mitigation of HM contamination in Hattar industrial effluent is required before irrigation.
Powered by DB/Text
WebPublisher, from