If organic loading creates a situation where the microorganisms use oxygen at a greater rate than the exchange capacity of the soil, oxygen depletion and an interruption in root function may result. The most accurate analysis is the COD because it represents the maximum potential oxygen requirement once the organic materials are deposited in the soil. More man 10 per cent of the total irrigation potential remains un-utilised. These include soil type and topography; characterization of the recycled water, including rate of ow, nutrient loads, organic loads, and concentration of any toxic materials; and the assimilative capacity of the site, which is related to soil type, type of vegetation planted, and environmental conditions to which the site is exposed. Recycled water may provide significant amounts of nitrogen, especially if large volumes of recycled water are being applied. With most turf areas, nitrogen — which is not volatilized — is not actually removed from the plant/soil system except in areas where clippings are removed. Irrigation management does not generally have a good record, but the full extent of the problems has been obscured by a lack of performance assessment criteria and a variety of hidden subsidies. Irrigation amounts and rates should be matched to turf demands, not to site capacity. BOD/COD. When the SAR exceeds 10, a recommendation normally is made to apply calcium, usually as gypsum, and to apply excess irrigation to displace and leach the sodium. This in turn affects nutrient availability. It will assist the states to accelerate the completion of unfinished, medium and major irrigation projects, and also to undertake reforms by revising user charges and setting up of water users associations. The recent response of the government has been to set up the Accelerated irrigation Benefit Programme. If it is not taken in by the plant or used by the microbial population, it may leach. It deals about the problems and remedies of irrigation works such as water conservation, water use and inter basin transfer of water. (ix) A comprehensive watershed management plan need be formulated and effectively implemented. This can result in subtle but measurable reductions in growth under low BOD/COD concentrations. Once this equilibrium of nitrogen loading, fixation, and mineralization occurs, the soil’s assimilative capacity changes. The primary beneficiaries are over 415,200 water users of selected farmer-managed irrigation systems (FMIS) covering over 26,859 ha, mainly in the hill regions. If the amount is significant — greater than 2.5 meq/l (150 ppm) — the pH of the soil may be affected by long-term use of recycled water. The suitability of water for turfgrass irrigation is a affected by what is dissolved or suspended in it. N.C. Boron is difficult to leach, requiring twice as much water to leach as other soluble salts. Fecal coliforms. Soil and water salinity and associated problems are a major challenge for global food … Recycled use advantages: Paramount in this category is the fact that there is water available for irrigation use rather than none at all. An irrigation problem that is becoming increasingly more difficult to avoid is the presence of salts in the irrigation water, or salinity. Some of these can by spelled out as follows: (1) Delay in the Completion of Major Irrigation Projects: A number of major multi-purpose river valley projects that were expected to give a boost to the irrigation potential in the economy were started during the Second and the Third Plans, i.e., almost 40 -45 years age Quite a few of these projects have as yet to be completed. 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