reuse. Cadmium, copper, and zinc in rice produced in Java. (1983) investigated on the use of highly saline water for wheat and barley irrigation. The WUE, obtained in T-4 and T-5 irrigated with well water and receiving 75 and 100 nitrogen requirements, respectively was comparable with T-4 and T-5 irrigated with aquaculture effluent and receiving 25 and 50 nitrogen requirements, respectively. Persica with increasing irrigation water salinity. Based on the results of this study, it appears that cultivars of rapeseed recently introduced from Canada have an excellent potential as oilseed crops in Saudi Arabia. However, according to Vidal (1951), the arable land in Al-Ahsa Oasis was estimated around 16,000 hectares. Water, Air and Soil Pollution 44: 7182. Quality of irrigation water is determined by its chemical composition and the conditions of use.
Standards given by Water and Power Development Authority (wapda) are.
Water quality for agriculture.
Food and Agriculture Organization, Irrigation and Drainage Papers.
Irrigation Water Quality kistan.
Irrigation water quality research paper
Falsifying research for a paper
Owl writing mla research paper
Internship term paper
The predicted soil salinity suggested that 15-20 leaching requirement should be applied to keep soil salinity within permissible limits. Table 7: Tentative classification of effective salinity of irrigation water ( Doneen, 1954 ) Table 9: Guidelines for Interpretation of water quality for Irrigation ( FAO, 1985 ) 1: ECw means Electrical conductivity of irrigation water at 25C. The Sodium Adsorption Ratio (SAR) is calculated as below: SAR Na Ca Mg 21/2 The Adjusted Sodium Adsorption Ratio (R) is calculated as below (Ayers and Westcot, 1985 R SARiw 1 (8.4-pHc The R takes into account the effect of Na and CO3HCO3 of irrigation. Inadequate land drainage Poor soil permeability is a one of the major factors limiting the use of marginal quality water for agricultural expansion. However, a very little work is accomplished on consumptive use of water for different crops under the hot climatic conditions of Saudi Arabia ( Aziz., 1983 ). Halimus increased while that. The study indicated that a highly salt-affected soil can be reclaimed with 60 cm depth of water for 0-30 cm surface soil and with 100 cm depth of water for 0-90 cm profile in a 3 to 5 gender identity research paper month period.