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Item Inflow rate AMD cutoff ratio for irrigation in nearly level border strips(Kerala Agricultural University, 1987) Visalakshi, K P; George, T PThe experiment was done to study the hydraulics, of border strip irrigation in nearly level lands, during 1982. The study revealed that the discharge rate of 2 l/s/m and the inflow cutoff length of 77 per cent of the strip length are optimum for uniform distribution of water for the following reasons: 1) The depth of irrigation could be limited to 5cm even in soils having high rate of infiltration; 2) The lower discharge rate of 2 l/s/m reduced the time of ponding at the downstream end and this minimised the wastage due to deep percolation at the downstream end; 3) Soil erosion was minimum at this rate of discharge; 4) Long strips upto 45 m length in loamy sand could be irrigated with high degrees of efficiency; and 5) As only a low rate of discharge was required to practise this method, even in areas having limited availability of water an additional crop could profitability be raised.Item Infiltration opportunity time in level or nearly level borders(Kerala Agricultural University, 1987) Visalakshi, K P; George, T PThe study was conducted in 1982 with an objective of finding out the infiltration opportunity time in nearly level border strips. The results revealed that a discharge rate of 2 l/s/m is the best for irrigating nearly level borders of 4-6 m width. This discharge rate gives almost equal opportunity time throughout the entire length of the strip excepting at the downstream end, thus giving better distribution efficiency. The recommended length of strip is upto 45 m and these can be laid in the direction of natural slope.